Here is my weekly weather quiz question for the last time. What is “The Best Track?” And I don’t mean race track. Here is the correct answer. Best Track is a subjectively-smoothed representation of a tropical cyclone’s location and intensity over its lifetime. The best track contains the cyclone’s latitude, longitude, maximum sustained surface winds, and minimum sea-level pressure at 6-hourly intervals. Best track positions and intensities, which are based on a post-storm assessment of all available data, may differ from values contained in storm advisories. They also generally will not reflect the erratic motion implied by connecting individual center fix positions.  I’ll have a new weekly weather quiz question for you Monday. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

________________

 

A High Pressure Ridge (Shaded “Arch” shape with blue arrows) took over today. The graphics for days 1-3 show the cold front that will be moving toward Oregon. An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) will return marine airflow to the Willamette Valley Tuesday. The graphics for days 3-7 show a frontal system that will push through the Pacific Northwest Wednesday and another one that approaches the coast next Sunday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 30 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 79 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 28 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

 

__________________

Advisories:

• AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON MONDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS, THE KLAMATH BASIN, THE NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 10 AM MONDAY FOR CROOK COUNTY, DESCHUTES COUNTY, GILLIAM COUNTY, GRANT COUNTY, JEFFERSON COUNTY, MORROW COUNTY, SHERMAN COUNTY, UMATILLA COUNTY, UNION COUNTY, WALLOWA COUNTY, WASCO COUNTY, AND WHEELER COUNTY.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and now all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

________________

Your College Football Forecast:

Saturday September 16th–

Ducks vs Wyoming, at War Memorial Stadium – Laramie, Wyoming– Kickoff: 4:00 PM PDT – Too early for an accurate weather forecast.

Beavers vs Washington State, at Martin Stadium – Pullman, Washington– Kickoff: 2:30 PM PDT- Too early for an accurate weather forecast.

________________

 

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Clear tonight,
• Sunny and a bit warmer Monday, mostly clear at night,
• Mostly sunny and a bit cooler Tuesday, partly cloudy and a bit cooler Tuesday night through Wednesday evening, then mostly cloudy late Wednesday night.
• lows 50-54 cooling to 47 Wednesday night highs 89-73.
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Thursday afternoon, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy late at night,
• A mix of clouds and sun and a bit warmer Friday, then partly cloudy and a bit warmer Friday night through Sunday.
• highs 69-77 lows 47-49. (seasonal averages high 79 low 48)

________________

 

Forecast for Roseburg:

• Clear with patchy smoke tonight,
• Sunny with areas of smoke and a bit warmer Monday, mostly clear with areas of evening smoke, partly cloudy with areas of smoke late at night,
• Partly cloudy with areas of smoke and a bit cooler Tuesday with a slight (20%) chance of thunderstorms in the afternoon and evening, just partly cloudy with areas of smoke late Tuesday night,
• Then partly cloudy and a bit cooler with areas of smoke Wednesday and at night.
• lows 56-60 cooling to 49 Wednesday night highs 93-75.
• Partly cloudy and a bit cooler with areas of smoke Thursday and Thursday night,
• Partly cloudy with areas  of smoke and a bit warmer with a slight (20%) chance of thunderstorms Friday and at night,
• Then partly cloudy and a bit warmer with areas of smoke Saturday through Sunday.
• highs 72-78 lows 49-52. (seasonal averages high 80 low 52)

 

_____________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Clear tonight,
• Sunny and a bit warmer Monday, mostly clear at night,
• Partly cloudy and a bit cooler Tuesday afternoon and evening, mostly cloudy late Tuesday night,
• Then partly cloudy and a bit cooler Wednesday and at night.
• lows 52-55 cooling back to 52 Wednesday night highs 75-65.
• Partly cloudy and a bit warmer Thursday through Saturday night,
• Partly cloudy Sunday AM, becoming mostly cloudy and a bit warmer with a slight (20%) chance of showers in the afternoon.
• highs 66-69 lows near 52. (seasonal averages high 65 low 51)

________________

Forecast for the Cascades in Lane County:

• Clear with areas of smoke tonight,
• Sunny and a bit warmer with areas of smoke Monday, partly cloudy with areas of smoke and a slight (20%) chance of showers and thunderstorms late Monday night through Tuesday evening, partly cloudy with areas of smoke late Tuesday night,
• Partly cloudy with areas of smoke and a bit cooler with a slight (20%) chance of showers and a bit cooler Wednesday afternoon and evening, then partly cloudy with areas of smoke late at night.
• free air freezing level 16,000 ft. tonight and Monday, 15,000 ft. Monday evening, 13,000 ft. late Tuesday night and Wednesday AM, then 11,000 ft. late Wednesday night.
• lows 52-54 cooling to 39 Wednesday night highs 82-64.
• Partly cloudy with areas of smoke and a bit cooler Thursday and Thursday night,
• Partly cloudy with areas of smoke and a bit warmer Friday through Sunday.
• free air freezing level 11,000 ft. falling to 9,000 ft. Thursday afternoon, 9,000 ft. Thursday night and Friday, 9,000 ft. rising to 10,000 ft. late Friday night, 10,000 ft. rising to 11,000 ft. Saturday afternoon, 11,000 ft. Saturday night, then 11,000 ft. rising to 13,000 ft. Sunday.
• highs 54-65 lows 35-42.

 

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________

Here is my weekly weather quiz question for the last time. What is “The Best Track?” And I don’t mean race track. Here is the correct answer. Best Track is a subjectively-smoothed representation of a tropical cyclone’s location and intensity over its lifetime. The best track contains the cyclone’s latitude, longitude, maximum sustained surface winds, and minimum sea-level pressure at 6-hourly intervals. Best track positions and intensities, which are based on a post-storm assessment of all available data, may differ from values contained in storm advisories. They also generally will not reflect the erratic motion implied by connecting individual center fix positions.  I’ll have a new weekly weather quiz question for you Monday. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

________________

 

An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) changed our weather pattern returning the rain chances. A High Pressure Ridge (Shaded “Arch” shape with blue arrows) takes over today. The graphics for days 1-3 show the cold front that’s moving through Oregon. The graphics for days 3-7 show a frontal that will push through the Pacific Northwest Wednesday and another one that approaches the coast next Sunday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 28 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 47 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 31 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

 

__________________

Advisories:

• AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON MONDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 10 AM MONDAY FOR CROOK COUNTY, DESCHUTES COUNTY, GILLIAM COUNTY, GRANT COUNTY, JEFFERSON COUNTY, MORROW COUNTY, SHERMAN COUNTY, UMATILLA COUNTY, UNION COUNTY, WALLOWA COUNTY, WASCO COUNTY, WHEELER COUNTY, AND HOOD RIVER COUNTY..
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL FURTHER NOTICE FOR THE KLAMATH BASIN, THE NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and now all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

________________

Your College Football Forecast:

Saturday September 16th–

Ducks vs Wyoming, at War Memorial Stadium – Laramie, Wyoming– Kickoff: 4:00 PM PDT – Too early for an accurate weather forecast.

Beavers vs Washington State, at Martin Stadium – Pullman, Washington– Kickoff: 2:30 PM PDT- Too early for an accurate weather forecast.

________________

 

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• AM clouds, mostly sunny and a bit warmer this afternoon, mostly clear tonight,
• Sunny and a bit warmer Monday, clear at night,
• Mostly sunny and a bit cooler Tuesday, mostly clear in the evening, then mostly cloudy Tuesday night.
• highs 82-92 cooling to 84 Tuesday lows 49-55.
• A mix of clouds and sun and a bit cooler Wednesday and Thursday, partly cloudy both nights,
• A mix of clouds and sun and a bit warmer Friday, then partly cloudy Friday night and Saturday.
• highs 74-69 warming to 76 Saturday lows near 48. (seasonal averages high 79 low 48)

________________

 

Forecast for Roseburg:

• AM clouds, sunny and a bit warmer this afternoon, clear with patchy smoke tonight,
• Sunny with patchy smoke and a bit warmer Monday, mostly clear with patchy smoke Monday night,
• AM sun, partly cloudy with patchy smoke and a bit cooler Tuesday, partly cloudy with patchy smoke and a slight (20%) chance of thunderstorms Tuesday night.
• highs 87-90 cooling back to 87 Tuesday lows 56-59 cooling back to 56 Tuesday night.
• Partly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of thunderstorms Wednesday, mostly cloudy with a slight (20%) chance of evening thunderstorms, mostly cloudy with patchy smoke late at night,
• Partly cloudy and a bit cooler with patchy smoke Thursday and Thursday night,
• Partly cloudy with patchy smoke and a bit warmer Friday through Saturday.
• highs 78-70 warming back to 78 Saturday lows near 50. (seasonal averages high 80 low 52)

 

_____________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy this AM, sunny and a bit warmer this afternoon, clear tonight,
• Sunny and a bit warmer Monday, mostly clear at night,
• AM sun, partly cloudy and a bit cooler Tuesday afternoon and at night.
• highs 68-72 cooling to 66 Tuesday lows 52-55.
• Partly cloudy and a bit cooler Wednesday, then partly cloudy Wednesday night through Saturday.
• highs near 64 lows 52-50. (seasonal averages high 65 low 51)

________________

Forecast for the Cascades in Lane County:

• Partly cloudy with patchy smoke this AM, mostly sunny and a bit warmer with areas of smoke this afternoon, mostly clear with areas of smoke tonight,
• Sunny and a bit warmer with areas of smoke Monday, clear in the evening, partly cloudy with areas of smoke and a slight (20%) chance of showers and thunderstorms late Monday night,
• Partly cloudy with areas of smoke and a slight (20%) chance of AM showers and thunderstorms, areas of smoke with a slight (20%) chance of showers and a bit cooler Tuesday afternoon and evening, partly cloudy with areas of smoke late Tuesday night.
• free air freezing level 15,000 ft. rising to 16,000 ft. today, 16,000 ft. tonight and Monday, 15,000 ft. Monday evening, then 13,000 ft. late Tuesday night.
• highs 72-82 cooling to 74 Tuesday lows 47-54 cooling back to 47 Tuesday night.
• Partly cloudy with areas of smoke and a bit cooler with a slight (20%) chance of showers and thunderstorms Wednesday afternoon and evening, partly cloudy with areas of smoke late at night,
• Partly cloudy with areas of smoke and a bit cooler Thursday and Thursday night,
• Partly cloudy with areas of smoke and a bit warmer Friday through Saturday.
• free air freezing level 13,000 ft. Wednesday AM, 11,000 ft. late Wednesday night, 11,000 ft. falling to 9,000 ft. Thursday afternoon, 9,000 ft. Thursday night and Friday, 9,000 ft. rising to 10,000 ft. late Friday night, the 10,000 ft. rising to 11,000 ft. Saturday afternoon.
• highs 65-54 warming to 64 Saturday lows 38-34 warming to 39 Friday night.

 

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________

Here is my weekly weather quiz question. What is “The Best Track?” And I don’t mean race track. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

________________

 

An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) changed our weather pattern returning the rain chances. A High Pressure Ridge (Shaded “Arch” shape with blue arrows) takes over Sunday. The graphics for days 1-3 show the cold front that’s moving through Oregon. The graphics for days 3-7 show a frontal that will push through the Pacific Northwest Wednesday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 43 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 64 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 52 in the Moderate category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

 

__________________

Advisories:

• AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON MONDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 10 AM MONDAY FOR CROOK COUNTY, DESCHUTES COUNTY, GILLIAM COUNTY, GRANT COUNTY, JEFFERSON COUNTY, MORROW COUNTY, SHERMAN COUNTY, UMATILLA COUNTY, UNION COUNTY, WALLOWA COUNTY, WASCO COUNTY, WHEELER COUNTY, AND HOOD RIVER COUNTY..
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL FURTHER NOTICE FOR THE KLAMATH BASIN, THE NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and now all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

________________

Your College Football Forecast:

Ducks vs Nebraska, at Autzen Stadium – Kickoff: 1:30 PM PDT – Mostly cloudy with a slight chance of isolated showers,  72 warming to 77 by the end of the game.

Beavers vs Minnesota, at Reser Stadium – Kickoff: 7:00 PM PDT- Mostly cloudy with a slight chance of isolated evening showers, 74 then cooling as the game progresses.

________________

 

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late tonight,
• AM clouds, mostly sunny and a bit warmer in the afternoon, mostly clear Sunday night,
• Sunny and a bit warmer Monday, clear at night,
• Mostly sunny and a bit cooler Tuesday, mostly clear in the evening, then mostly cloudy Tuesday night.
• lows 56-49 warming to 55 Tuesday night highs 82-92 cooling to 84 Tuesday.
• A mix of clouds and sun and a bit cooler Wednesday and Thursday, partly cloudy both nights,
• A mix of clouds and sun and a bit warmer Friday, then partly cloudy Friday night and Saturday.
• highs 74-69 warming to 76 Saturday lows near 48. (seasonal averages high 79 low 49)

________________

 

Forecast for Roseburg:

• Mostly cloudy with patchy smoke and a slight (20%) chance of isolated evening showers, partly cloudy late tonight,
• AM clouds, sunny and a bit warmer Sunday afternoon, clear with patchy smoke at night,
• Sunny with patchy smoke and a bit warmer Monday, mostly clear with patchy smoke Monday night,
• AM sun, partly cloudy with patchy smoke and a bit cooler Tuesday, partly cloudy with patchy smoke and a slight (20%) chance of thunderstorms Tuesday night.
• lows 56-59 cooling back to 56 Tuesday night highs 87-90 cooling back to 87 Tuesday.
• Partly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of thunderstorms Wednesday, mostly cloudy with a slight (20%) chance of evening thunderstorms, mostly cloudy with patchy smoke late at night,
• Partly cloudy and a bit cooler with patchy smoke Thursday and Thursday night,
• Partly cloudy with patchy smoke and a bit warmer Friday through Saturday.
• highs 78-70 warming back to 78 Saturday lows near 50. (seasonal averages high 81 low 53)

 

_____________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with a slight (20%) chance of isolated evening showers, just mostly cloudy late tonight and Sunday AM, sunny and a bit warmer in the afternoon, clear Sunday night,
• Sunny and a bit warmer Monday, mostly clear at night,
• AM sun, partly cloudy and a bit cooler Tuesday afternoon and at night.
• lows 53-50 warming to 54 Monday night highs 68-72 cooling to 66 Tuesday.
• Partly cloudy and a bit cooler Wednesday, then partly cloudy Wednesday night through Saturday.
• highs near 64 lows 52-50. (seasonal averages high 65 low 51)

________________

Forecast for the Cascades in Lane County:

• Becoming mostly cloudy with patchy smoke tonight,
• Partly cloudy with patchy smoke Sunday AM, mostly sunny and a bit warmer with areas of smoke in the afternoon, mostly clear with areas of smoke at night,
• Sunny and a bit warmer with areas of smoke Monday, clear in the evening, partly cloudy with areas of smoke and a slight (20%) chance of showers and thunderstorms late Monday night,
• Partly cloudy with areas of smoke and a slight (20%) chance of AM showers and thunderstorms, areas of smoke with a slight (20%) chance of showers and a bit cooler Tuesday afternoon and evening, partly cloudy with areas of smoke late Tuesday night.
• free air freezing level 14,000 ft. tonight, 15,000 ft. rising to 16,000 ft. Sunday, 16,000 ft. Sunday night and Monday, 15,000 ft. Monday evening, then 13,000 ft. late Tuesday night.
• lows 47-54 cooling back to 47 Tuesday night highs 72-82 cooling to 74 Tuesday.
• Partly cloudy with areas of smoke and a bit cooler with a slight (20%) chance of showers and thunderstorms Wednesday afternoon and evening, partly cloudy with areas of smoke late at night,
• Partly cloudy with areas of smoke and a bit cooler Thursday and Thursday night,
• Partly cloudy with areas of smoke and a bit warmer Friday through Saturday.
• free air freezing level 13,000 ft. Wednesday AM, 11,000 ft. late Wednesday night, 11,000 ft. falling to 9,000 ft. Thursday afternoon, 9,000 ft. Thursday night and Friday, 9,000 ft. rising to 10,000 ft. late Friday night, the 10,000 ft. rising to 11,000 ft. Saturday afternoon.
• highs 65-54 warming to 64 Saturday lows 38-34 warming to 39 Friday night.

 

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________

Here is my weekly weather quiz question. What is “The Best Track?” And I don’t mean race track. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

________________

 

An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) changed our weather pattern returning the rain chances..  The graphics for days 1-3 show the cold front that moved through Oregon and the next one that will move in Saturday . The graphics for days 3-7 show a frontal that will push through the Pacific Northwest Tuesday.

Note: I had 0.09 inches of rain in my rain gauge Thursday which is the first measurable rainfall in my yard since June 15th.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 43 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 63 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 60 in the Moderate category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

 

__________________

Advisories:

• AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON MONDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 10 AM MONDAY FOR CROOK COUNTY, DESCHUTES COUNTY, GILLIAM COUNTY, GRANT COUNTY, JEFFERSON COUNTY, MORROW COUNTY, SHERMAN COUNTY, UMATILLA COUNTY, UNION COUNTY, WALLOWA COUNTY, WASCO COUNTY, WHEELER COUNTY, AND HOOD RIVER COUNTY..
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL FURTHER NOTICE FOR THE KLAMATH BASIN, THE NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and now all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

________________

Your College Football Forecast:

Ducks vs Nebraska, at Autzen Stadium – Kickoff: 1:30 PM PDT – Mostly cloudy with a slight chance of isolated showers,  72 warming to 77 by the end of the game.

Beavers vs Minnesota, at Reser Stadium – Kickoff: 7:00 PM PDT- Mostly cloudy with a slight chance of isolated evening showers, 74 then cooling as the game progresses.

________________

 

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy today with a slight (20%) chance of isolated late afternoon and evening showers, just mostly cloudy late tonight,
• A mix of clouds and sun Sunday AM, mostly sunny and a bit warmer in the afternoon, mostly clear Sunday night,
• Sunny and a bit warmer Monday, then mostly clear at night.
• highs 77-89 lows 55-52 warming to 56 Monday night.
• Mostly sunny and a bit cooler Tuesday, partly cloudy Tuesday night,
• Partly cloudy and a bit cooler Wednesday through Thursday night,
• Then partly cloudy and a bit warmer Friday.
• highs 85-72 warming to 75 Friday lows 54-48. (seasonal averages high 79 low 49)

________________

 

Forecast for Roseburg:

• Mostly cloudy with patchy smoke this afternoon, mostly cloudy with patchy smoke and a slight (20%) chance of evening showers, partly cloudy late tonight,
• Partly cloudy with patchy AM smoke, sunny and a bit warmer with patchy smoke Sunday afternoon, clear with patchy smoke at night,
• Sunny with patchy smoke and a bit warmer Monday, mostly clear with patchy smoke in the evening, then partly cloudy with patchy smoke late Monday night.
• highs 82-90 lows 59-56 warming back to 59 Monday night.
• Partly cloudy with patchy smoke and a bit cooler Tuesday and Tuesday night,
• Partly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of thunderstorms Wednesday afternoon and at night,
• Partly cloudy and a bit cooler with patchy smoke Thursday and Thursday night,
• Then partly cloudy with patchy smoke and a bit warmer Friday.
• highs 88-75 warming to 80 Friday lows 58-50. (seasonal averages high 81 low 53)

_____________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy today, mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late tonight and Sunday AM, sunny and a bit warmer in the afternoon, clear Sunday night,
• Sunny and a bit warmer Monday, clear in the evening, then partly cloudy late at night.
• highs 65-75 lows 56-52 warming to 54 Monday night.
• Partly cloudy and a bit cooler Tuesday through Thursday,
• Then partly cloudy and a bit warmer Friday.
• highs 67-62 lows 56-50. (seasonal averages high 65 low 51)

________________

Forecast for the Cascades in Lane County:

• A mix of clouds and sun and a bit warmer with patchy smoke today, mostly cloudy with patchy smoke late tonight,
• Partly cloudy with patchy smoke Sunday AM, mostly sunny and a bit warmer with areas of smoke in the afternoon, mostly clear with areas of smoke at night,
• Sunny and a bit warmer with areas of smoke Monday, then mostly clear with areas of smoke Monday night.
• free air freezing level 14,000 ft. today and tonight, 16,000 ft. Sunday through Monday night.
• highs 66-82 lows 47-53.
• AM sun, partly cloudy and a bit cooler with areas of smoke and a slight (20%) chance of showers and thunderstorms Tuesday afternoon, partly cloudy with areas of smoke and a slight (20%) chance of evening showers and thunderstorms, just partly cloudy with areas of smoke late Tuesday night,
• Partly cloudy with areas of smoke and a bit cooler with a slight (20%) chance of showers and thunderstorms Wednesday afternoon and evening, partly cloudy with areas of smoke at night,
• Partly cloudy with areas of smoke and a bit cooler Thursday and Thursday night,
• Then partly cloudy with areas of smoke and a bit warmer Friday.
• snow level above 8,000 ft. Tuesday through Wednesday night, free air freezing level 11,000 ft. Thursday, then 10,000 ft. Thursday night and Friday.
• highs 76-59 warming to 62 Friday lows 50-36.

 

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________

Here is my weekly weather quiz question. What is “The Best Track?” And I don’t mean race track. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

________________

 

An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) changed our weather pattern returning the rain chances..  The graphics for days 1-3 show the cold front that moved through Oregon and the next one that will move in Saturday . The graphics for days 3-7 show a frontal that will push through the Pacific Northwest Tuesday.

Note: I had 0.09 inches of rain in my rain gauge Thursday which is the first measurable rainfall in my yard since June 15th.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 45 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 71 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 56 in the Moderate category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

 

__________________

Advisories:

• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS FOR THE CENTRAL MOUNTAINS OF OREGON, THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS, THE NORTHERN BLUE MOUNTAINS OF OREGON, AND THE CENTRAL BLUE MOUNTAINS OF OREGON.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON MONDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 10 AM MONDAY FOR CROOK COUNTY, DESCHUTES COUNTY, GILLIAM COUNTY, GRANT COUNTY, JEFFERSON COUNTY, MORROW COUNTY, SHERMAN COUNTY, UMATILLA COUNTY, UNION COUNTY, WALLOWA COUNTY, WASCO COUNTY, AND WHEELER COUNTY.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL FURTHER NOTICE FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and now all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

________________

Your College Football Forecast:

Ducks vs Nebraska, at Autzen Stadium – Kickoff: 1:30 PM PDT – Mostly cloudy with a slight chance of isolated showers,  72 warming to 77 by the end of the game.

Beavers vs Minnesota, at Reser Stadium – Kickoff: 7:00 PM PDT- Mostly cloudy with a slight chance of isolated evening showers, 75 then cooling as the game progresses.

________________

 

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy this evening, partly cloudy late tonight,
• Mostly cloudy Saturday with a slight (20%) chance of isolated afternoon and evening showers, just mostly cloudy late at night,
• A mix of clouds and sun Sunday AM, mostly sunny and a bit warmer in the afternoon, mostly clear Sunday night,
• Sunny and a bit warmer Monday, then mostly clear at night.
• lows 57-52 warming to 56 Monday night highs 77-89.
• Mostly sunny and a bit cooler Tuesday, partly cloudy Tuesday night,
• Partly cloudy and a bit cooler Wednesday through Thursday night,
• Then partly cloudy and a bit warmer Friday.
• highs 85-72 warming to 75 Friday lows 54-48. (seasonal averages high 79 low 49)

________________

 

Forecast for Roseburg:

• Mostly cloudy with patchy smoke this evening, partly cloudy with patchy smoke late tonight,
• Mostly cloudy with patchy smoke Saturday afternoon, mostly cloudy with patchy smoke and a slight (20%) chance of evening showers, partly cloudy late Saturday night,
• Partly cloudy with patchy AM smoke, sunny and a bit warmer with patchy smoke Sunday afternoon, clear with patchy smoke at night,
• Sunny with patchy smoke and a bit warmer Monday, mostly clear with patchy smoke in the evening, then partly cloudy with patchy smoke late Monday night.
• lows 59-56 warming back to 59 Monday night highs 82-90.
• Partly cloudy with patchy smoke and a bit cooler Tuesday and Tuesday night,
• Partly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of thunderstorms Wednesday afternoon and at night,
• Partly cloudy and a bit cooler with patchy smoke Thursday and Thursday night,
• Then partly cloudy with patchy smoke and a bit warmer Friday.
• highs 88-75 warming to 80 Friday lows 58-50. (seasonal averages high 81 low 53)

_____________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy tonight with patchy inland evening smoke,
• Mostly cloudy Saturday, mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late at night and Sunday AM, sunny and a bit warmer in the afternoon, clear Sunday night,
• Sunny and a bit warmer Monday, clear in the evening, then partly cloudy late at night.
• lows 56-52 warming to 54 Monday night highs 65-75.
• Partly cloudy and a bit cooler Tuesday through Thursday,
• Then partly cloudy and a bit warmer Friday.
• highs 67-62 lows 56-50. (seasonal averages high 65 low 51)

________________

Forecast for the Cascades in Lane County:

• Partly cloudy with areas of smoke and a slight (20%) chance of evening showers, just partly cloudy with areas of smoke late tonight,
• Partly cloudy and a bit warmer with patchy smoke Saturday, mostly cloudy with patchy smoke late Saturday night,
• Partly cloudy with patchy smoke Sunday AM, mostly sunny and a bit warmer with areas of smoke in the afternoon, mostly clear with areas of smoke at night,
• Sunny and a bit warmer with areas of smoke Monday, then mostly clear with areas of smoke Monday night.
• free air freezing level 14,000 ft. tonight through Saturday night, 15,000 ft. Sunday, then 16,000 ft. Sunday night through Monday night.
• lows 48-53 night highs 66-82.
• AM sun, partly cloudy and a bit cooler with areas of smoke and a slight (20%) chance of showers and thunderstorms Tuesday afternoon, partly cloudy with areas of smoke and a slight (20%) chance of evening thunderstorms, just partly cloudy with areas of smoke Tuesday night,
• Partly cloudy with areas of smoke and a bit cooler with a slight (20%) chance of showers and thunderstorms Wednesday afternoon and evening, partly cloudy with areas of smoke at night,
• Partly cloudy with areas of smoke and a bit cooler Thursday and Thursday night,
• Then partly cloudy with areas of smoke and a bit warmer Friday.
• snow level above 8,000 ft. Tuesday through Wednesday night, free air freezing level 11,000 ft. Thursday, then 10,000 ft. Thursday night and Friday.
• highs 76-59 warming to 62 Friday lows 50-36.

 

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________

Here is my weekly weather quiz question. What is “The Best Track?” And I don’t mean race track. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

________________

 

An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) is changing our weather pattern increasing the rain chances with slight chances of thunderstorms.  The graphics for days 1-3 show the cold front moving through Oregon. The graphics for days 3-7 show frontal systems attempting to move into the Pacific Northwest Sunday and again next Wednesday.

Note: I had 0.09 inches of rain in my rain gauge Thursday which is the first measurable rainfall in my yard since June 15th.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 38 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 35 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 41 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

 

__________________

Advisories:

• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS FOR THE CENTRAL MOUNTAINS OF OREGON, THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS, THE NORTHERN BLUE MOUNTAINS OF OREGON, AND THE CENTRAL BLUE MOUNTAINS OF OREGON.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 12 PM TODAY FOR BENTON COUNTY, CLACKAMAS COUNTY, CLATSOP COUNTY, COLUMBIA COUNTY, HOOD RIVER COUNTY, LANE COUNTY, LINCOLN COUNTY, LINN COUNTY, MARION COUNTY,MULTNOMAH COUNTY, POLK COUNTY, TILLAMOOK COUNTY, WASHINGTON COUNTY, WASHINGTON COUNTY, CROOK COUNTY, DESCHUTES COUNTY, GILLIAM COUNTY, GRANT COUNTY, MORROW COUNTY, JEFFERSON COUNTY, MORROW COUNTY, SHERMAN COUNTY, UMATILLA COUNTY, UNION COUNTY, WILLOWA COUNTY, WASCO COUNTY, WHEELER COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRL AND EASTERN LAKE COUNTY, BAKER COUNTY, HARNEY COUNTY, AND MALHEUR COUNTY .
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL FURTHER NOTICE FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 10 AM MONDAY FOR CROOK COUNTY, DESCHUTES COUNTY, GILLIAM COUNTY, GRANT COUNTY, JEFFERSON COUNTY, MORROW COUNTY, SHERMAN COUNTY, UMATILLA COUNTY, UNION COUNTY, WALLOWA COUNTY, WASCO COUNTY, AND WHEELER COUNTY.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and now all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority updated the Health Advisory issued June 30 for Lake Billy Chinook, located about 12 miles west of Madras in Jefferson County. The update lifts the advisory on those areas of the Deschutes and Crooked River of Lake Billy Chinook arms affected by the advisory, and confines the advisory on the Metolius Arm to Perry South Cove. Water monitoring has confirmed that the level of blue-green algae toxins are below guideline values for human exposure. However, OHA recommends that people remain cautious when using the lake, particularly with pets because toxins are still well above the very low exposure levels established for dogs.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

________________

Your College Football Forecast:

Saturday:

Ducks vs Nebraska, at Autzen Stadium – Kickoff: 1:30 PM PDT – A mix of clouds and sun with a slight chance of showers  72 warming to 77 by the end of the game.

Beavers vs Minnesota, at Reser Stadium – Kickoff: 7:00 PM PDT- Mostly cloudy 75, a slight chance of evening showers, cooling as the game progresses.

________________

 

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy and a bit cooler with No smoke and a slight (20%) chance of showers this afternoon, just partly cloudy tonight,
• A mix of clouds and sun with a slight (20%) chance of showers Saturday afternoon, mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy at night,
• Partly cloudy Sunday AM, mostly sunny and a bit warmer in the afternoon, then mostly clear Sunday night.
• highs 76-80 lows 56-52.
• Mostly sunny and a bit warmer Monday and Tuesday, mostly clear Monday night, partly cloudy Tuesday night,
• Then partly cloudy and a bit cooler Wednesday through Thursday.
• highs 85-78 lows 54-50. (seasonal averages high 79 low 49)

________________

 

Forecast for Roseburg:

• Mostly cloudy with patchy smoke and a bit warmer this afternoon and tonight,
• Mostly cloudy with patchy AM smoke, partly cloudy and a bit warmer with patchy smoke Saturday afternoon and Saturday night,
• Partly cloudy with patchy AM smoke, sunny and a bit warmer with patchy smoke Sunday afternoon, then clear with patchy smoke at night.
• highs 79-85 lows 58-56.
• Mostly sunny with patchy smoke and a bit warmer Monday, mostly clear with patchy smoke Monday night,
• Sunny with patchy AM smoke, partly cloudy with patchy smoke and a bit cooler Tuesday afternoon and Tuesday night,
• Partly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of thunderstorms Wednesday afternoon, patchy smoke with a slight (20%) chance of evening thunderstorms, a slight (20%) chance of showers at night,
• Then partly cloudy and a bit warmer with patchy smoke and a slight (20%) chance of showers Thursday.
• highs 89-80 lows 58-54. (seasonal averages high 81 low 53)

_____________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy and a bit warmer this afternoon, mostly cloudy tonight and Saturday, mostly cloudy with a slight (20%) chance of evening coastal showers, partly cloudy late at night,
• Partly cloudy Sunday AM, sunny and a bit warmer in the afternoon, then clear Sunday night.
• highs 65-68 lows 55-53.
• Mostly sunny and a bit warmer Monday, mostly clear at night,
• AM sun, partly cloudy and a bit cooler Tuesday afternoon and Tuesday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers Wednesday afternoon through Thursday (a bit warmer).
• highs 73-63 warming to 65 Thursday lows near 54. (seasonal averages high 65 low 51)

________________

Forecast for the Cascades in Lane County:

• A M clouds, a mix of clouds and sun with areas of smoke and a bit cooler with a (40%) chance of showers this afternoon, partly cloudy with areas of smoke and a slight (20%) chance of evening showers, just partly cloudy with patchy smoke late tonight,
• A mix of clouds and sun and a bit warmer with patchy with smoke Saturday, partly cloudy with patchy evening smoke,  mostly cloudy with patchy smoke late Saturday night,
• Partly cloudy with patchy smoke Sunday AM, mostly sunny and a bit warmer with areas of smoke in the afternoon, then mostly clear with areas of smoke Sunday night.
• snow level above 8,000 ft. today, free air freezing level 14,000 ft. late tonight through Saturday night, 15,000 ft. Sunday, then 16,000 ft. Sunday night.
• highs 65-69 lows 50-46 warming back to 50 Sunday night.
• Mostly sunny and a bit warmer with areas of smoke Monday, mostly clear with areas of smoke and a slight (20%) chance of showers at night,
• Mostly sunny and a bit cooler with areas of smoke and a slight (20%) chance of showers Tuesday, partly cloudy with areas of smoke Tuesday night,
• Partly cloudy with areas of smoke and a bit cooler Wednesday afternoon through Thursday.
• free air freezing level 16,000 ft. Monday and Monday night, 15,000 ft. Tuesday and Tuesday night, 14,000 ft. Wednesday, 13,000 ft. Wednesday night, then 12,000 ft. Thursday.
• highs 78-64 lows 52-46.

 

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________

Here is my weekly weather quiz question. What is “The Best Track?” And I don’t mean race track. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

________________

 

An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) is changing our weather pattern increasing the rain chances with slight chances of thunderstorms.  The graphics for days 1-3 show the cold front moving through Oregon. The graphics for days 3-7 show frontal systems attempting to move into the Pacific Northwest Sunday and again next Wednesday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 88 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 139 in the Unhealthy for Sensitive Groups category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 88 in the Moderate category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

 

__________________

Advisories:

• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR ABUNDANT LIGHTNING FOR THE NORTH OREGON COAST, THE NORTH OREGON COAST RANGE, THE EASRT SLOPES OF THE CENTRAL OREGON COAST RANGE, THE WILLAMETTE VALLEY, THE NORTH OREGON CASCADE FOOTHILLS, THE CENTRAL OREGON CASCADE FOOTHILLS, THE MT. HOOD NATIONAL FOREST WEST OF CASCADE CREST, THE WILLAMETTE NATIONAL FOREST, AND THE CENTRAL OREGON COAST .
• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR ABUNDANT LIGHTNING  ON DRY FUELS FOR THE SOUTH CENTRAL OREGON COAST, THE UMPQUA BASIN, THE UMPQUA NATIONAL FOREST, THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY, THE SISKIYOU MOUNTAINS, THE EASTERN ROGUE VALLEY, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, THE SOUTH CENTRA OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE COUNTY AND WESTERN HARNEY COUNTY.
• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW UNTIL 10 PM TONIGHT FOR THE EAST SLOPES OF THE CENTRL OREGON CASCADES, THE DESCHUTES NATIONAL FOREST, AND THE MINUS SISTERS RANGER DISTRICT.
• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM FRIDAY FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS FOR THE CENTRAL MOUNTAINS OF OREGON, THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS, THE NORTHERN BLUE MOUNTAINS OF OREGON, AND THE CENTRAL BLUE MOUNTAINS OF OREGON.
• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING ON DRY FUELS UNTIL 11 PM TONIGHT FOR THE WESTERN KLAMATH NATIONAL FOREST, THE SOUTHERN OREGON COAST, THE WESTERN ROGUE RIVER, AND THE SISKIYOU NATIONAL FOREST.
• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS UNTIL 2 AM FRIDAY FOR THE EAST SLOPES OF THE CENTRAL OREGON CASCADES, THE DESCHUTES NATIONAL FOREST, AND THE MINUS SISTERS RANGER DISTRICT.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 12 PM FRIDAY FOR BENTON COUNTY, CLACKAMAS COUNTY, CLATSOP COUNTY, COLUMBIA COUNTY, HOOD RIVER COUNTY, LANE COUNTY, LINCOLN COUNTY, LINN COUNTY, MARION COUNTY,MULTNOMAH COUNTY, POLK COUNTY, TILLAMOOK COUNTY, WASHINGTON COUNTY, WASHINGTON COUNTY, CROOK COUNTY, DESCHUTES COUNTY, GILLIAM COUNTY, GRANT COUNTY, MORROW COUNTY, JEFFERSON COUNTY, MORROW COUNTY, SHERMAN COUNTY, UMATILLA COUNTY, UNION COUNTY, WILLOWA COUNTY, WASCO COUNTY, WHEELER COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRL AND EASTERN LAKE COUNTY, BAKER COUNTY, HARNEY COUNTY, AND MALHEUR COUNTY .
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL FURTHER NOTICE FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and now all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority updated the Health Advisory issued June 30 for Lake Billy Chinook, located about 12 miles west of Madras in Jefferson County. The update lifts the advisory on those areas of the Deschutes and Crooked River of Lake Billy Chinook arms affected by the advisory, and confines the advisory on the Metolius Arm to Perry South Cove. Water monitoring has confirmed that the level of blue-green algae toxins are below guideline values for human exposure. However, OHA recommends that people remain cautious when using the lake, particularly with pets because toxins are still well above the very low exposure levels established for dogs.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

________________

Your College Football Forecast:

Saturday:

Ducks vs Nebraska, at Autzen Stadium – Kickoff: 1:30 PM PDT – A mix of clouds and sun with a slight chance of showers  72 warming to 77 by the end of the game.

Beavers vs Minnesota, at Reser Stadium – Kickoff: 7:00 PM PDT- Partly cloudy, becoming mostly cloudy 75 and cooling as the game progresses.

________________

 

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with areas of smoke and a good (50%) chance of showers with a slight (20%) chance of thunderstorms this evening, a good (50%) chance of showers late tonight with areas of smoke (0.10 in. of rain possible, more in storms),
• Mostly cloudy and a bit cooler with areas of smoke and a slight (20%) chance of showers Friday, mostly cloudy Friday night,
• A mix of clouds and sun with a slight (20%) chance of showers and a bit warmer Saturday afternoon, mostly cloudy at night,
• Partly cloudy Sunday AM, mostly sunny and a bit warmer in the afternoon, then mostly clear Sunday night.
• lows 60-52 highs 76-80.
• Mostly sunny and a bit warmer Monday and Tuesday, mostly clear Monday night, partly cloudy Tuesday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms Wednesday afternoon and evening, a slight (20%) chance of showers late at night,
• Then partly cloudy and a bit cooler with a slight (20%) chance of showers Thursday.
• highs 85-78 lows 54-50. (seasonal averages high 79 low 49)

________________

 

Forecast for Roseburg:

• Cloudy with areas of smoke and showers likely (70%) with a slight (20%) chance of evening thunderstorms, a good (50%) chance of showers late tonight (0.15 in. of rain possible),
• Mostly cloudy with areas of smoke and a slight (20%) chance of showers Friday AM, mostly cloudy with patchy smoke and a bit cooler Friday afternoon and at night,
• Mostly cloudy with patchy AM smoke, partly cloudy and a bit warmer with patchy smoke Saturday afternoon and Saturday night,
• Partly cloudy with patchy AM smoke, sunny and a bit warmer with patchy smoke Sunday afternoon, then clear with patchy smoke at night.
• lows 62-56 highs 79-85.
• Mostly sunny with patchy smoke and a bit warmer Monday, mostly clear Monday night,
• Sunny with patchy smoke and a bit cooler Tuesday, mostly clear with patchy evening smoke, partly cloudy with patchy smoke late Tuesday night,
• Partly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of thunderstorms Wednesday, patchy smoke with a slight (20%) chance of showers at night,
• Then partly cloudy and a bit warmer with patchy smoke and a slight (20%) chance of showers Thursday.
• highs 89-80 lows 58-54. (seasonal averages high 81 low 53)

_____________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Cloudy with a (30%) chance of showers and a slight (20%) chance of thunderstorms this evening,  a (30%) chance of showers late tonight (under 0.10 in. of rain possible, small hail possible).
• Mostly cloudy with areas of AM smoke and a slight (20%) chance of showers, just mostly cloudy with areas of smoke Friday afternoon, mostly cloudy Friday night through Saturday evening, partly cloudy late at night,
• Mostly cloudy and a bit warmer Saturday and in the evening, mostly cloudy in the evening, partly cloudy late Saturday night and Sunday AM, sunny and a bit warmer in the afternoon, then clear Sunday night.
• lows 58-53 highs 65-68.
• Mostly sunny and a bit warmer Monday, mostly clear at night,
• Sunny and a bit cooler Tuesday, mostly clear in the evening, partly cloudy late Tuesday night,
• Then partly cloudy and a bit cooler with a slight (20%) chance of showers Wednesday through Thursday (a bit warmer).
• highs 73-63 warming to 65 Thursday lows near 54. (seasonal averages high 66 low 51)

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy with areas of smoke and showers with a chance of thunderstorms this evening, areas of smoke with a good (50%) chance of showers late tonight (0.25 in of rain possible, more in storms),
• A mix of clouds and sun with areas of smoke and a slight (20%) chance of AM showers, a bit cooler with a (40%) chance of showers Friday afternoon, partly cloudy with areas of smoke and a slight (20%) chance of evening showers, just partly cloudy with patchy smoke late Friday night,
• A mix of clouds and sun and a bit warmer with patchy with smoke Saturday, partly cloudy with patchy evening smoke,  mostly cloudy with patchy smoke late Saturday night,
• Partly cloudy with patchy smoke Sunday AM, mostly sunny and a bit warmer with areas of smoke in the afternoon, then mostly clear with areas of smoke Sunday night.
• snow level above 8,000 ft. tonight and Friday, free air freezing level 13,000 ft. late Friday night and Saturday, 13,000 ft. rising to 14,000 ft. Saturday night, 14,000 ft. rising to 15,000 ft. Sunday, then 15,000 ft. Sunday night.
• lows 52-46 highs 65-69.
• Mostly sunny and a bit warmer with areas of smoke Monday, mostly clear with areas of smoke at night,
• Mostly sunny and a bit cooler with areas of smoke Tuesday, partly cloudy with areas of smoke and a slight (20%) chance of showers and thunderstorms late Tuesday night,
• Partly cloudy with areas of smoke and a slight (20%) chance of AM showers and thunderstorms, a (40%) chance of showers and thunderstorms and a bit cooler Wednesday afternoon and evening, then partly cloudy with areas of smoke and a slight (20%) chance of showers late at night and Thursday (a bit cooler).
• free air freezing level 15,000 ft. Monday through Tuesday evening, snow level above 8,000 ft. Wednesday through Thursday.
• highs 78-64 lows 52-46.

 

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________

Here is my new weekly weather quiz question. What is “The Best Track?” And I don’t mean race track. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

________________

 

An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) is changing our weather pattern increasing the rain chances with slight chances of thunderstorms.  The graphics for days 1-3 show a cold front moving through Oregon Friday. The graphics for days 3-7 show frontal systems attempting to move into the Pacific Northwest Sunday and next Thursday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 163 in the Unhealthy category measuring Particulate Matter.

Oakridge: The Air Quality Index is 160 in the Unhealthy category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 157 in the Unhealthy category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

 

__________________

Advisories:

• ATTENTION: 

  The National Weather Service in Portland has issued a
  
  * Severe Thunderstorm Warning for...
    Southeastern Lane County in western Oregon...
  
  * Until 215 PM PDT.
  
  * At 138 PM PDT, a severe thunderstorm was located over Hills Creek
    Reservoir, or near Oakridge, moving north at 25 mph.
  
    HAZARD...Half dollar size hail.
  
    SOURCE...Radar indicated.
  
    IMPACT...Damage to vehicles is expected.
  
  * Locations impacted include...
    Oakridge, Hills Creek Reservoir and Westfir.
  
  In Oregon this includes State Highway 58 between mile markers 34 and
  41.
  
  PRECAUTIONARY/PREPAREDNESS ACTIONS...
  
  Prepare immediately for large hail and deadly cloud to ground
  lightning. Seek shelter inside a well-built structure. Stay away from
  windows.
  
  If on or near Hills Creek Reservoir, get away from the water and
  move indoors or inside a vehicle. Remember, lightning can strike out
  to 15 miles from the parent thunderstorm. If you can hear thunder,
  you are close enough to be struck by lightning. Move to safe shelter
  now!  Do not be caught on the water in a thunderstorm.
  

• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR ABUNDANT LIGHTNING FOR THE NORTH OREGON COAST, THE NORTH OREGON COAST RANGE, THE EASRT SLOPES OF THE CENTRAL OREGON COAST RANGE, THE WILLAMETTE VALLEY, THE NORTH OREGON CASCADE FOOTHILLS, THE CENTRAL OREGON CASCADE FOOTHILLS, THE MT. HOOD NATIONAL FOREST WEST OF CASCADE CREST, THE WILLAMETTE NATIONAL FOREST, AND THE CENTRAL OREGON COAST .
• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR ABUNDANT LIGHTNING  ON DRY FUELS FOR THE SOUTH CENTRAL OREGON COAST, THE UMPQUA BASIN, THE UMPQUA NATIONAL FOREST, THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY, THE SISKIYOU MOUNTAINS, THE EASTERN ROGUE VALLEY, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, THE SOUTH CENTRA OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE COUNTY AND WESTERN HARNEY COUNTY.
• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW UNTIL 2 AM FRIDAY FOR THE EAST SLOPES OF THE CENTRL OREGON CASCADES, THE DESCHUTES NATIONAL FOREST, AND THE MINUS SISTERS RANGER DISTRICT.
• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM FRIDAY FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS FOR THE CENTRAL MOUNTAINS OF OREGON, THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS, THE NORTHERN BLUE MOUNTAINS OF OREGON, AND THE CENTRAL BLUE MOUNTAINS OF OREGON.
• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING ON DRY FUELS UNTIL 11 PM TONIGHT FOR THE WESTERN KLAMATH NATIONAL FOREST, THE SOUTHERN OREGON COAST, THE WESTERN ROGUE RIVER, AND THE SISKIYOU NATIONAL FOREST.
• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS UNTIL 2 AM FRIDAY FOR THE EAST SLOPES OF THE CENTRAL OREGON CASCADES, THE DESCHUTES NATIONAL FOREST, AND THE MINUS SISTERS RANGER DISTRICT.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 12 PM FRIDAY FOR BENTON COUNTY, CLACKAMAS COUNTY, CLATSOP COUNTY, COLUMBIA COUNTY, HOOD RIVER COUNTY, LANE COUNTY, LINCOLN COUNTY, LINN COUNTY, MARION COUNTY,MULTNOMAH COUNTY, POLK COUNTY, TILLAMOOK COUNTY, WASHINGTON COUNTY, WASHINGTON COUNTY, CROOK COUNTY, DESCHUTES COUNTY, GILLIAM COUNTY, GRANT COUNTY, MORROW COUNTY, JEFFERSON COUNTY, MORROW COUNTY, SHERMAN COUNTY, UMATILLA COUNTY, UNION COUNTY, WILLOWA COUNTY, WASCO COUNTY, WHEELER COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRL AND EASTERN LAKE COUNTY, BAKER COUNTY, HARNEY COUNTY, AND MALHEUR COUNTY .
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL FURTHER NOTICE FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• A FLASH FLOOD WATCH IS IN EFFECT THROUGH THIS EVENING FOR BURN SCAR AREAS FOR THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and now all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority updated the Health Advisory issued June 30 for Lake Billy Chinook, located about 12 miles west of Madras in Jefferson County. The update lifts the advisory on those areas of the Deschutes and Crooked River of Lake Billy Chinook arms affected by the advisory, and confines the advisory on the Metolius Arm to Perry South Cove. Water monitoring has confirmed that the level of blue-green algae toxins are below guideline values for human exposure. However, OHA recommends that people remain cautious when using the lake, particularly with pets because toxins are still well above the very low exposure levels established for dogs.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

________________

Your College Football Forecast:

September 9th-

Ducks vs Nebraska, at Autzen Stadium – Kickoff: 1:30 PM PDT – A mix of clouds and sun 72 warming to 77 by the end of the game.

Beavers vs Minnesota, at Reser Stadium – Kickoff: 7:00 PM PDT- Partly cloudy 75 with a slight chance of evening showers and cooling as the game progresses.

________________

 

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with lingering smoke and a bit cooler with a (30%) chance of showers and thunderstorms this AM, a (30%) chance of showers with a slight (20%) chance of thunderstorms with patchy smoke this afternoon (under 0.10 in. of rain possible, more in storms), a good (50%) chance of showers tonight with patchy smoke (0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of showers Friday, partly cloudy in the evening, just mostly cloudy late Friday night,
• A mix of clouds and sun Saturday, mostly cloudy with a slight (20%) chance of evening showers, then partly cloudy late at night.
• highs near 80 lows 59-54.
• A mix of clouds and sun Sunday AM, mostly sunny and a bit warmer in the afternoon, mostly clear Sunday night,
• Sunny and a bit warmer Monday, clear at night,
• Mostly sunny Tuesday, then partly cloudy Tuesday night and Wednesday (a bit cooler).
• highs 82-86 cooling back to 82 Wednesday lows 52-55. (seasonal averages high 79 low 49)

________________

 

Forecast for Roseburg:

• Mostly cloudy with patchy smoke and a slight (20%) chance of thunderstorms this AM, patchy smoke and a bit cooler with a (30%) chance of thunderstorms this afternoon (under 0.10 in. of rain possible, gusty winds and heavy rain possible), cloudy with a (30%) chance of scattered evening thunderstorms, a (30%) chance of showers late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with areas of smoke AM smoke,  a slight (20%) chance of showers with patchy smoke and a bit cooler Friday afternoon, a slight (20%) chance of evening showers, partly cloudy with patchy smoke late at night,
• Partly cloudy and a bit warmer with patchy smoke Saturday and Saturday night.
• highs 82-80 warming to 84 Saturday lows 62-57.
• Mostly sunny and a bit warmer with patchy smoke Sunday, mostly clear with patchy smoke at night,
• Mostly sunny with patchy smoke and a bit warmer Monday and Tuesday, mostly clear Monday night and Tuesday evening, partly cloudy with patchy smoke Tuesday night,
• Then partly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of thunderstorms Wednesday afternoon.
• highs 86-90 cooling back to 86 Wednesday lows 56-58. (seasonal averages high 81 low 53)

_____________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with a (30%) chance of showers and a slight (20%) chance of thunderstorms this AM,  a (30%) chance of coastal showers this afternoon while a (30%) chance of afternoon inland thunderstorms and a bit cooler, cloudy with a (30%) chance of coastal showers tonight while a (30%) chance of inland evening thunderstorms, then a (30%) chance of inland showers late Thursday night (under 0.10 in. of rain possible).
• Mostly cloudy with areas of AM smoke,  a slight (20%) chance of showers Friday afternoon, just mostly cloudy in the evening, partly cloudy late Friday night,
• Partly cloudy and a bit warmer Saturday, mostly cloudy in the evening, then partly cloudy late Saturday night.
• highs 66-68 lows 58-55.
• Mostly sunny Sunday and Monday (a bit warmer), mostly clear both nights,
• Sunny and a bit cooler Tuesday, mostly clear in the evening, partly cloudy at night,
• Then partly cloudy and a bit cooler with a slight (20%) chance of showers Wednesday afternoon.
• highs 70-65 lows near 54. (seasonal averages high 66 low 51)

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy with areas of smoke and a good (50%) chance of showers and thunderstorms and a bit cooler today (0.25 in. of rain possible, more in storms), areas of smoke and mostly cloudy with evening showers likely (70%), areas of smoke with a good (50%) chance of showers late tonight,
• Mostly cloudy with areas of smoke and a bit cooler with a (30%) chance of showers Friday, partly cloudy with areas of smoke and a (40%) chance of showers in the evening, just mostly cloudy with patchy smoke late Friday night,
• Partly cloudy with patchy smoke Saturday and Saturday night.
• snow level above 8,000 ft. today through Friday night, free air freezing level 14,000 ft. Saturday, then 13,000 ft. rising to 14,000 ft. Saturday night.
• highs 69-67 lows 52-47.
• Partly cloudy with patchy smoke Sunday AM, mostly sunny and a bit warmer with areas of smoke in the afternoon,  mostly clear with areas of smoke late at night,
• Sunny and a bit warmer with areas of smoke Monday, clear with areas of smoke in the evening, partly cloudy with areas of smoke late Monday night,
• Mostly sunny and a bit cooler with areas of smoke Tuesday, partly cloudy with areas of smoke and a slight (20%) chance of showers late Tuesday night,
• Partly cloudy with areas of smoke and a slight (20%) chance of AM showers, areas of smoke with a slight (20%) chance of showers and thunderstorms and a bit cooler Wednesday afternoon.
• free air freezing level 14,000 ft. rising to 15,000 ft. Sunday, 15,000 ft. Sunday night, 15,000 ft. rising to 16,000 ft. Monday, then 16,000 ft. Monday night through Wednesday,
• highs 72-80 cooling to 73 Wednesday lows 49-53.

 

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________

Here is my new weekly weather quiz question. What is “The Best Track?” And I don’t mean race track. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

________________

 

An Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) called an Omega Block (shaped like Greek letter Omega) brought the hot, dry weather allowing wildfire smoke to cover the area. The graphics for days 1-3 show a cold front moving through Oregon Friday. The graphics for days 3-7 show frontal systems attempting to move into the Pacific Northwest Sunday and next Thursday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 159 in the Unhealthy category measuring Particulate Matter.

Oakridge: The Air Quality Index is 165 in the Unhealthy category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 159 in the Unhealthy category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

 

__________________

Advisories:

• *A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM THURSDAY FOR ABUNDANT LIGHTNING FOR THE NORTH OREGON COAST, THE NORTH OREGON COAST RANGE, THE EASRT SLOPES OF THE CENTRAL OREGON COAST RANGE, THE WILLAMETTE VALLEY, THE NORTH OREGON CASCADE FOOTHILLS, THE CENTRAL OREGON CASCADE FOOTHILLS, THE MT. HOOD NATIONAL FOREST WEST OF CASCADE CREST, THE WILLAMETTE NATIONAL FOREST, AND THE CENTRAL OREGON COAST .
• *A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM THURSDAY FOR ABUNDANT LIGHTNING  ON DRY FUELS FOR THE SOUTH CENTRAL OREGON COAST, THE UMPQUA BASIN, THE UMPQUA NATIONAL FOREST, THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY, THE SISKIYOU MOUNTAINS, THE EASTERN ROGUE VALLEY, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, THE SOUTH CENTRA OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE COUNTY AND WESTERN HARNEY COUNTY.
• *A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW FROM 3 PM TODAY UNTIL 2 AM FRIDAY FOR THE EAST SLOPES OF THE CENTRL OREGON CASCADES, THE DESCHUTES NATIONAL FOREST, AND THE MINUS SISTERS RANGER DISTRICT.
• *A RED FLAG WARNING IS IN EFFECT FROPM 2 PM THURSDAY UNTIL 11 PM FRIDAY FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS FOR THE CENTRAL MOUNTAINS OF OREGON, THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS, THE NORTHERN BLUE MOUNTAINS OF OREGON, AND THE CENTRAL BLUE MOUNTAINS OF OREGON.
• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING ON DRY FUELS UNTIL 11 PM THURSDAY FOR THE WESTERN KLAMATH NATIONAL FOREST, THE SOUTHERN OREGON COAST, THE WESTERN ROGUE RIVER, AND THE SISKIYOU NATIONAL FOREST.
• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS FROM 3 PM TODAY UNTIL 2 AM FRIDAY FOR THE EAST SLOPES OF THE CENTRAL OREGON CASCADES, THE DESCHUTES NATIONAL FOREST, AND THE MINUS SISTERS RANGER DISTRICT.
• A FIRE WEATHER WATCH IS IN EFFECT THROUGH THIS EVENING FOR ABUNDANT LIGHTNING WITH DRY FUELS FOR THE SOUTH CENTRAL OREGON COAST, THE UMPQUA BASIN, THE UMPQUA NATIONAL FOREST, THE SOUTHERN OREGON COAST, THE WESTERN ROGUE RIVER, THE SISKIYOU NATIONAL FOREST, THE WESTERN ROUGHE BASIN INCLUDING THE ILLINOIS VALLEY, THE SISKIYOU MOUNTAINS, THE EASTERN ROGUE VALLEY, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST, AND  THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES.
• *A DENSE SMOKE ADVISORY IS IN EFFECT UNTIL MIDNIGHT TONIGHT FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS AND THE SOUTH CENTRAL OREGON CASCADES.
• *AN AIR QUALITY ALERT IS IN EFFECT UNTIL 12 PM FRIDAY FOR BENTON COUNTY, CLACKAMAS COUNTY, CLATSOP COUNTY, COLUMBIA COUNTY, HOOD RIVER COUNTY, LANE COUNTY, LINCOLN COUNTY, LINN COUNTY, MARION COUNTY,MULTNOMAH COUNTY, POLK COUNTY, TILLAMOOK COUNTY, WASHINGTON COUNTY, WASHINGTON COUNTY, CROOK COUNTY, DESCHUTES COUNTY, GILLIAM COUNTY, GRANT COUNTY, MORROW COUNTY, JEFFERSON COUNTY, MORROW COUNTY, SHERMAN COUNTY, UMATILLA COUNTY, UNION COUNTY, WILLOWA COUNTY, WASCO COUNTY, WHEELER COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRL AND EASTERN LAKE COUNTY, BAKER COUNTY, HARNEY COUNTY, AND MALHEUR COUNTY .
• *AN AIR QUALITY ALERT IS IN EFFECT UNTIL FURTHER NOTICE FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY,NTHE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• *A FLASH FLOOD WATCH IS IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING FOR BURN SCAR AREAS FOR THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and now all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority updated the Health Advisory issued June 30 for Lake Billy Chinook, located about 12 miles west of Madras in Jefferson County. The update lifts the advisory on those areas of the Deschutes and Crooked River of Lake Billy Chinook arms affected by the advisory, and confines the advisory on the Metolius Arm to Perry South Cove. Water monitoring has confirmed that the level of blue-green algae toxins are below guideline values for human exposure. However, OHA recommends that people remain cautious when using the lake, particularly with pets because toxins are still well above the very low exposure levels established for dogs.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

________________

Your College Football Forecast:

September 9th-

Ducks vs Nebraska, at Autzen Stadium – Kickoff: 1:30 PM PDT – A mix of clouds and sun 72 warming to 77 by the end of the game.

Beavers vs Minnesota, at Reser Stadium – Kickoff: 7:00 PM PDT- Partly cloudy 75 with a slight chance of evening showers and cooling as the game progresses.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with a good (50%) chance of showers and thunderstorms this evening, showers and thunderstorms likely (70%) late tonight (0.25 in. of rain possible, more in storms),
• Mostly cloudy and a bit cooler with a (40%) chance of showers and a slight (20%) chance of thunderstorms Thursday (under 0.10 in. of rain possible, more in storms), a good (50%) chance of showers at night (0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of showers Friday afternoon, partly cloudy in the evening, just mostly cloudy late Friday night,
• A mix of clouds and sun Saturday, mostly cloudy with a slight (20%) chance of evening showers, then partly cloudy late at night.
• lows 60-54 highs near 80.
• Partly cloudy Sunday AM, mostly sunny and a bit warmer in the afternoon, mostly clear Sunday night,
• Sunny and a bit warmer Monday, clear at night,
• Mostly sunny Tuesday, then partly cloudy Tuesday night and Wednesday(a bit cooler).
• highs 82-86 cooling back to 82 Wednesday lows 52-55. (seasonal averages high 79 low 49)

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Forecast for Roseburg:

• Mostly cloudy with patchy smoke and a bit cooler with a (30%) chance of showers and a slight (20%) chance of thunderstorms this evening, patchy smoke with a (30%) chance of thunderstorms late  tonight (under 0.10 in. of rain possible, small hail and gusty winds in storms),
• Mostly cloudy with patchy smoke and a slight (20%) chance of thunderstorms Thursday AM, patchy smoke and a bit cooler with a (30%) chance of thunderstorms in the afternoon (under 0.10 in. of rain possible, gusty winds and heavy rain possible), a (30%) chance of scattered evening thunderstorms, a (30%) chance of showers late Thursday night (under 0.10 in. of rain possible),
• Mostly cloudy with areas of smoke AM smoke,  a slight (20%) chance of showers with patchy smoke and a bit cooler Friday afternoon, a slight (20%) chance of evening showers, partly cloudy with patchy smoke late at night,
• Partly cloudy and a bit warmer with patchy smoke Saturday and Saturday night.
• lows 62-57 highs 82-80 warming to 84 Saturday.
• Mostly sunny and a bit warmer with patchy smoke Sunday, mostly clear with patchy smoke at night,
• Mostly sunny with patchy smoke and a bit warmer Monday and Tuesday, mostly clear Monday night and Tuesday evening, partly cloudy with patchy smoke Tuesday night,
• Then partly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of thunderstorms Wednesday afternoon.
• highs 86-90 cooling back to 86 Wednesday lows 55-57. (seasonal averages high 81 low 53)

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Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with a slight (20%) chance of coastal thunderstorms this evening while patchy inland smoke this evening (gusty winds and small hail possible), mostly cloudy with a slight (20%) chance of  thunderstorms late tonight (0.10 in. of rain possible, more in storms),
• Mostly cloudy with a (30%) chance of showers and a slight (20%) chance of thunderstorms Thursday AM,  a (30%) chance of coastal showers in the afternoon while a (%) chance of afternoon thunderstorms and a bit cooler inland in the afternoon, cloudy with a (30%) chance of coastal showers at night while a (%) chance of inland evening thunderstorms, then a (%) chance of inland showers late Thursday night (under 0.10 in. of rain possible).
• Mostly cloudy with areas of AM smoke,  a slight (20%) chance of showers Friday afternoon, just mostly cloudy in the evening, partly cloudy late Friday night,
• Partly cloudy and a bit warmer Saturday, mostly cloudy in the evening, then partly cloudy late Saturday night.
• lows 58-55 highs 66-68.
• Mostly sunny Sunday and Monday (a bit warmer), mostly clear both nights,
• Sunny and a bit cooler Tuesday, mostly clear in the evening, partly cloudy at night,
• Then partly cloudy and a bit cooler with a slight (20%) chance of showers Wednesday afternoon.
• highs 70-65 lows near 54. (seasonal averages high 66 low 51)

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Forecast for the Cascades in Lane County:

• Mostly cloudy with areas of smoke and a good (50%) chance of showers and thunderstorms this evening, areas of smoke with showers likely (70%) with a chance of thunderstorms late tonight (0.25 in. of rain possible, more in storms),
• Mostly cloudy with areas of smoke and a good (50%) chance of AM showers and thunderstorms, a bit cooler with areas of smoke and a good (50%) and a chance of thunderstorms Thursday afternoon (0.25 in. of rain possible, more in storms), areas of smoke and mostly cloudy with evening showers likely (70%), areas of smoke with a good (50%) chance of showers late Thursday night,
• Mostly cloudy with areas of smoke and a bit cooler with a (30%) chance of showers Friday, partly cloudy with areas of smoke and a (40%) chance of showers in the evening, just mostly cloudy with patchy smoke  late Friday night,
• Partly cloudy with patchy smoke Saturday and Saturday night.
• snow level above 8,000 ft. tonight through Friday night, free air freezing level 14,000 ft. Saturday, then 13,000 ft. rising to 14,000 ft. Saturday night.
• lows 56-47 highs 69-67.
• Partly cloudy with patchy smoke Sunday AM, mostly sunny and a bit warmer with areas of smoke in the afternoon,  mostly clear with areas of smoke late at night,
• Sunny and a bit warmer with areas of smoke Monday, clear with areas of smoke in the evening, partly cloudy with areas of smoke Monday night,
• Mostly sunny and a bit cooler with areas of smoke Tuesday, partly cloudy with areas of smoke, and a slight (20%) chance of showers Tuesday night.,
• Partly cloudy with areas of smoke and a slight (20%) chance of AM showers, areas of smoke with a slight (20%) chance of showers and thunderstorms and a bit cooler Wednesday afternoon.
• free air freezing level 14,000 ft. rising to 15,000 ft. Sunday, 15,000 ft. Sunday night, 15,000 ft. rising to 16,000 ft. Monday, then 16,000 ft. Monday night through Wednesday,
• highs 72-80 cooling to 73 Wednesday lows 49-53.

 

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________

Here is my new weekly weather quiz question. What is “The Best Track?” And I don’t mean race track. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

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An Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) called an Omega Block (shaped like Greek letter Omega) brought the hot, dry weather allowing wildfire smoke to cover the area. The graphics for days 1-3 show a cold front approaching the coast Thursday. The graphics for days 3-7 show frontal systems attempting to move into the Pacific Northwest Sunday and next Tuesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 152 in the Unhealthy category measuring Particulate Matter.

Oakridge: The Air Quality Index is 157 in the Unhealthy category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 154 in the Unhealthy category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

 

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Advisories:

• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW FROM 3 PM TODAY UNTIL 2 AM FRIDAY FOR THE EAST SLOPES OF THE CENTRL OREGON CASCADES, THE DDSCHUTES NATIONAL FOREST, AND THE MINUS SISTERS RANGER DISTRICT.
• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING ON DRY FUELS UNTIL 11 PM THURSDAY FOR THE WESTERN KLAMATH NATIONAL FOREST, THE SOUTHERN OREGON COAST, THE WESTERN ROGUE RIVER, AND THE SISKIYOU NATIONAL FOREST.
• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS FROM 3 PM TODAY UNTIL 2 AM FRIDAY FOR THE EST SLOPES OF THE CENTRAL OREGON CASCADES, THE DESCHUTES NATIONAL FOREST, AND THE MINUS SISTERS RANGER DISTRICT.
• A FIRE WEATHER WATCH IS IN EFFECT THROUGH THIS EVENING FOR ABUNDANT LIGHTNING WITH DRY FUELS FOR THE SOUTH CENTRAL OREGON COAST, THE UMPQUA BASIN, THE UMPQUA NATIONAL FOREST, THE SOUTHERN OREGON COAST, THE WESTERN ROGUE RIVER, THE SISKIYOU NATIONAL FOREST, THE WESTERN ROUGHE BASIN INCLUDING THE ILLINOIS VALLEY, THE SISKIYOU MOUNTAINS, THE EASTERN ROGUE VALLEY, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST, AND  THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES.
• A FIRE WEATHER WATCH IS IN EFFECT FROM THIS AFTERNOON THROUGH THURSDAY EVENING FOR ABUNDANT LIGHTNING AND DRY FUELS FOR THE NORTH OREGON COAST, THE CENTRAL OREGON COAST, THE NORTH OREGON COAST RANGE, THE EAST SLOPES OF THE THE CENTRAL OREGON COAST RANGE, THE ENTIRE WILLAMETTE VALLEY, THE CENTRAL OREGON CASCADE FOOTHILLS, THE NORTH OREGON CASCADE FOOTHILLS, THE MT. HOOD NATIONAL FOREST WEST OF CASCADE CREST,  THE WILLAMETTE NATIONAL FOREST, THE EAST SLOPES OF THE CENTRAL OREGON CASCADES, THE DESCHUTES NATIONAL FOREST, THE MINUS SISTERS RANGER DISTRICT, THE CENTRAL MOUNTAINS OF OREGON, THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS, THE NORTHERN BLUE MOUNTAINS OF OREGON, AND THE CENTRAL BLUE MOUNTAINS OF OREGON.
• A FIRE WEATHER WATCH IS IN EFFECT UNTIL 11 PM THURSDAY FOR ABUNDANT LIGHTNING ON DRY FUELS FOR THE WESTERN KLAMATH NATIONAL FOREST, THE SOUTHERN OREGON COAST, THE WESTERN ROGUE RIVER, AND THE SISKIYOU NATIONAL FOREST.
• A DENSE SMOKE ADVISORY IS IN EFFECT FROM 3 PM TODAY UNTIL MIDNIGHT TONIGHT FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND THE SOUTH CENTRAL OREGON CASCADES.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 12 PM FRIDAY FOR BENTON COUNTY, CLACKAMAS COUNTY, CLATSOP COUNTY, COLUMBIA COUNTY, HOOD RIVER COUNTY, LANE COUNTY, LINCOLN COUNTY, LINN COUNTY, MARION COUNTY,MULTNOMAH COUNTY, POLK COUNTY, TILLAMOOK COUNTY, WASHINGTON COUNTY, WASHINGTON COUNTY, CROOK COUNTY, DESCHUTES COUNTY, GILLIAM COUNTY, GRANT COUNTY, MORROW COUNTY, JEFFERSON COUNTY, MORROW COUNTY, SHERMAN COUNTY, UMATILLA COUNTY, UNION COUNTY, WILLOWA COUNTY, WASCO COUNTY, WHEELER COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRL AND EASTERN LAKE COUNTY, BAKER COUNTY, HARNEY COUNTY, AND MALHEUR COUNTY .
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL FURTHER NOTICE FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY,NTHE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• A FLASH FLOOD WATCH IS IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING FOR BURN SCAR AREAS FOR THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.

• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and now all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority updated the Health Advisory issued June 30 for Lake Billy Chinook, located about 12 miles west of Madras in Jefferson County. The update lifts the advisory on those areas of the Deschutes and Crooked River of Lake Billy Chinook arms affected by the advisory, and confines the advisory on the Metolius Arm to Perry South Cove. Water monitoring has confirmed that the level of blue-green algae toxins are below guideline values for human exposure. However, OHA recommends that people remain cautious when using the lake, particularly with pets because toxins are still well above the very low exposure levels established for dogs.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

________________

Your College Football Forecast:

September 9th-

Ducks vs Nebraska, at Autzen Stadium – Kickoff: 1:30 PM PDT – A mix of clouds and sun 70 warming to 77 by the end of the game.

Beavers vs Minnesota, at Reser Stadium – Kickoff: 7:00 PM PDT- Partly cloudy 75 and cooling as the game progresses.

________________

 

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• A mix of clouds and sun with areas of smoke and a (30%) chance of showers and thunderstorms this afternoon (under 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of showers and thunderstorms tonight (0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with a good (50%) chance of showers and thunderstorms Thursday (under 0.10 in. of rain possible), a (40%) chance of showers at night (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of AM showers, a bit cooler with a slight (20%) chance of showers Friday afternoon and evening, just mostly cloudy late Friday night.
• highs 82-77 lows 60-54.
• A mix of clouds and sun Saturday, partly cloudy at night and Sunday (a bit warmer), mostly clear Sunday night,
• Sunny and a bit warmer Monday, clear at night,
• Then mostly sunny and a bit cooler Tuesday.
• highs 77-88 cooling to 85 Tuesday lows 52-56. (seasonal averages high 80 low 49)

________________

 

Forecast for Roseburg:

• Mostly cloudy with patchy smoke and a bit cooler with a slight (20%) chance of thunderstorms today (under 0.10 in. of rain possible) and tonight (under 0.10 in. of rain possible),
• Mostly cloudy with patchy smoke and a slight (20%) chance of thunderstorms Thursday AM, patchy smoke and a bit cooler with a (30%) chance of scattered showers and isolated thunderstorms in the afternoon (under 0.10 in. of rain possible), a (30%) chance of scattered evening thunderstorms, isolated showers late Thursday night (under 0.10 in. of rain possible),
• Mostly cloudy with areas of smoke and a slight (20%) chance of AM showers, patchy smoke and a bit cooler Friday afternoon and evening with a slight (20%) chance of evening showers, then mostly cloudy with patchy smoke late at night.
• highs 88-79 lows 62-59.
• Mostly cloudy with patchy smoke Saturday AM, partly cloudy and a bit warmer with patchy smoke in the afternoon, mostly clear with patchy smoke Saturday night,
• Mostly sunny and a bit warmer with patchy smoke Sunday, mostly clear with patchy smoke at night,
• Sunny and a bit warmer with patchy smoke Monday, mostly clear with patchy smoke Monday night,
• Then mostly sunny with patchy smoke and a bit cooler Tuesday.
• highs 83-90 cooling to 88 Tuesday lows 55-57. (seasonal averages high 82 low 53)

_____________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with a slight (20%) chance of thunderstorms and patchy inland smoke this afternoon (under 0.10 in. of rain possible) and evening, mostly cloudy with a slight (20%) chance of  thunderstorms late tonight (0.10 in. of rain possible, more in storms),
• Mostly cloudy with a slight (20%) chance of AM showers while a slight (20%) chance of AM inland thunderstorms,  scattered showers and isolated thunderstorms and a bit cooler Thursday afternoon, cloudy with a (40%) chance of scattered evening thunderstorms, scattered coastal showers late at night while isolated inland showers late Thursday night (under 0.10 in. of rain possible).
• Mostly cloudy with areas of AM smoke,  a slight (20%) chance of showers Friday afternoon and evening, then just mostly cloudy late Friday night.
• highs 69-66 lows near 56.
• Mostly cloudy in the AM, partly cloudy Saturday afternoon and evening, mostly clear Saturday night,
• Mostly sunny Sunday and Monday (a bit warmer), mostly clear both nights,
• AM sun, then partly cloudy and a bit cooler Tuesday afternoon.
• highs 66-69 cooling to 65 Tuesday lows 56-54. (seasonal averages high 66 low 52)

________________

Forecast for the Cascades in Lane County:

• Partly cloudy and a  bit cooler with smoke and a (30%) chance of showers and thunderstorms this afternoon (under 0.10 in. of rain possible, more in storms), areas of smoke and a good (50%) chance of showers and thunderstorms tonight (0.25 in. of rain possible, more in storms),
• Mostly cloudy with areas of smoke and a (40%) chance of AM showers and thunderstorms, a bit cooler with areas of smoke and showers likely (70%) and a chance of thunderstorms Thursday afternoon, areas of smoke and mostly cloudy with a good (50%) chance of showers Thursday night,
• A mix of clouds and sun with areas of smoke and a (40%) chance of showers Friday, partly cloudy with areas of smoke and a slight (20%) chance of showers in the evening, then just mostly cloudy late Friday night.
• snow level above 8,000 ft. today through Friday afternoon, then free air freezing level 13,000 ft. Friday night.
• highs 76-65 lows 54-48.
• A mix of clouds and sun with areas of smoke Saturday afternoon, partly cloudy with areas of smoke Saturday night through Sunday evening, clear with areas of smoke late at night,
• Sunny with areas of smoke Monday, clear with areas of smoke Monday night,
• Then mostly sunny with areas of smoke Tuesday.
• free air freezing level 13,000 ft. Saturday, 13,000 ft. rising to 15,000 ft. Saturday night, 15,000 ft. rising to 16,000 ft. Sunday, 16,000 ft. Sunday night through Monday night, then 16,000 ft. falling to 15,000 ft. Tuesday.
• highs 64-78 lows 46-53.

 

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________