Here is my weekly weather quiz question. What is the “Beaufort Scale?” 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) will soon (late in the week) be replacing the high pressure ridge (Shaded “Arch” shape with blue arrows) that has started heating us up a bit again. The graphics for days 1-3 show a frontal system approaching the coast from the northwest on Friday. The graphics for days 3-7 show a frontal system moving through between Friday night and Saturday with more fronts coming early next week.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 40 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 167 in the Unhealthy category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 42 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________________

Advisories:

• 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, to include Shoalwater Bay to the north. 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.
• The Oregon Health Authority issued Health Advisory 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.
• The Oregon Health Authority issued a Health Advisory today 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 issued a Health Advisory 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 has 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.

________________

 

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

• Mostly clear tonight,
• AM clouds and sun, mostly sunny Thursday afternoon, mostly clear at night,
• Partly cloudy Friday AM, sunny and a bit warmer in the afternoon, clear in the evening, mostly cloudy late Friday night,
• AM clouds Saturday, mostly sunny and a bit cooler in the afternoon, then partly cloudy Saturday night.
• lows 56-53 warming to 55 Friday night cooling to 50 Saturday night highs 85-82.
• AM clouds and sun, mostly sunny and a bit warmer Sunday afternoon, clear at night,
• Mostly sunny and a bit warmer Monday,  partly cloudy and  bit warmer, partly cloudy Monday night,
• AM sun Tuesday, partly cloudy and a bit warmer in the afternoon and at night,
• Then partly cloudy and a bit cooler Wednesday.
• highs 82-87 cooling to 84 Wednesday lows 53-56. (seasonal averages high 83 low 51)

 

________________

Eugene-Springfield Pollen Count

Grass………. Low (2)
Trees………. Low (6)
Last Counted: 8/12/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season is over.

________________

Forecast for Roseburg:

• Clear with more patchy smoke tonight,
• AM clouds and patchy smoke, sunny and a bit warmer with patchy smoke Thursday afternoon, clear with patchy fog late Thursday night,
• Mostly sunny with patchy smoke Friday, mostly clear with patchy smoke at night,
• Mostly sunny with patchy smoke and a bit cooler Saturday, mostly clear with patchy smoke Saturday night.
• lows 59-56 highs 92-89.
• Mostly sunny and a bit cooler Sunday and Monday, mostly clear both nights,
• Partly cloudy and a bit warmer Monday through Tuesday, partly cloudy and a bit cooler Wednesday.
• highs 88-92 cooling to 88 Wednesday lows 56-60. (seasonal averages high 85 low 56)

_____________________

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

• Clear tonight,
• Mostly cloudy with patchy AM coastal fog and sunny in the afternoon while sunny inland Thursday afternoon, mostly clear Thursday night,
• Sunny and a bit warmer Friday, mostly clear in the evening, mostly cloudy late Friday night with patch coastal fog,
• Mostly cloudy with patchy AM fog, mostly sunny and a bit cooler Saturday afternoon, mostly clear in the evening, partly cloudy late Saturday night.
• lows 56-54 highs 68-66.
• Then partly cloudy Sunday through Wednesday.
• highs 67-65 lows near 55. (seasonal averages high 65 low 53)

________________

Forecast for the Cascades in Lane County:

• Clear with patchy smoke late tonight and Thursday AM, mostly sunny and a bit warmer in the afternoon, clear with patchy smoke late Thursday night,
• Patchy AM smoke, sunny and a bit warmer Friday afternoon, clear at night,
• Mostly sunny and a bit cooler Saturday, mostly clear at night.
• free air freezing level above 12,000 ft. tonight through Saturday night,
• lows 48-46 highs 76-72.
• AM clouds, mostly sunny and a bit warmer Sunday, clear  Sunday night,
• Mostly sunny and a bit warmer Monday, partly cloudy at night,
• AM sun, a mix of clouds and sun with a slight (20%) chance of showers and thunderstorms and a bit cooler Tuesday afternoon, partly cloudy with a slight (20%) chance of showers and thunderstorms Tuesday night,
• Then a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers and thunderstorms Wednesday.
• free air freezing level above 12,000 ft. Sunday through Tuesday AM, snow level above 8,000 ft. Tuesday afternoon through Wednesday.
• highs 73-78 cooling back to 73 Wednesday lows 48-52.

 

________________

**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 “Beaufort Scale?” 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) will soon (middle of the week) be replacing the high pressure ridge (Shaded “Arch” shape with blue arrows) that has started heating us up a bit again. The graphics for days 3-7 show a frontal system moving through between Friday and Saturday with more fronts coming early next week.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 30 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________________

Advisories:

• A FIRE WEATHER WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR THE SOUTHWEST OREGON COAST RANGE MAINLY ABOVE 2,000 FT., THE WESTERN ROUGE RIVER AND THE SISKIYOU NATIONAL FOREST.
• 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, to include Shoalwater Bay to the north. 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.
• The Oregon Health Authority issued Health Advisory 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.
• The Oregon Health Authority issued a Health Advisory today 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 issued a Health Advisory 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 has 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.

________________

 

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

• Mostly sunny and a bit warmer today, mostly clear tonight,
• AM clouds, mostly sunny Thursday afternoon, mostly clear at night,
• Partly cloudy Friday AM, sunny in the afternoon, clear in the evening, then mostly cloudy late Friday night.
• highs near 86 lows 54-50.
• Partly cloudy Saturday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy Saturday night,
• AM clouds, mostly sunny and a bit warmer Sunday afternoon, then partly cloudy and  bit warmer Sunday night through Tuesday.
• highs 82-86 lows 49-52. (seasonal averages high 83 low 51)

 

________________

Eugene-Springfield Pollen Count

Grass………. Low (2)
Trees………. Low (6)
Last Counted: 8/12/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season is over.

________________

Forecast for Roseburg:

• Sunny and a bit warmer with patchy smoke today, clear with more patchy smoke tonight,
• AM clouds and patchy smoke, sunny and a bit warmer with patchy smoke Thursday afternoon, mostly clear with patchy fog late Thursday night,
• Mostly sunny with patchy smoke Friday, then mostly clear with patchy fog at night.
• highs 88-90 lows 55-59 cooling to 57 Friday night.
• Mostly sunny and a bit cooler Saturday, mostly clear Saturday night,
• Partly cloudy and a bit cooler Sunday, partly cloudy at night,
• Partly cloudy and a bit warmer Monday through Tuesday.
• highs 87-90 cooling to 88 Tuesday lows 56-58. (seasonal averages high 85 low 56)

_____________________

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

• Partly cloudy with patchy coastal fog this AM, mostly sunny this afternoon, mostly clear in the evening, partly cloudy with patchy coastal fog late tonight,
• AM clouds with patchy coastal fog, mostly sunny Thursday afternoon, mostly clear in the evening, partly cloudy with patchy coastal fog late at night,
• Partly cloudy with patchy AM coastal fog, mostly sunny Friday afternoon, mostly clear in the evening,  then partly cloudy late Friday night.
• highs 68-66 lows 53-55.
• Partly cloudy Saturday through Tuesday.
• highs near 65 lows near 55. (seasonal averages high 65 low 53)

________________

Forecast for the Cascades in Lane County:

• Mostly sunny with patchy smoke and a bit warmer today and Thursday, mostly clear with  patchy smoke late at night,
• Sunny and a bit warmer Friday, then clear Friday night.
• free air freezing level above 12,000 ft. today through Friday night,
• highs 73-76 lows near 46.
• Mostly sunny and a bit cooler Saturday, mostly clear at night,
• Mostly sunny Sunday, mostly clear  Sunday night,
• Mostly sunny and a bit warmer Monday, partly cloudy at night,
• AM sun, then partly cloudy Tuesday afternoon.
• free air freezing level above 12,000 ft. Saturday through Tuesday.
• highs 72-78 lows 45-47.

 

________________

**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 “Beaufort Scale?” 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) will soon (middle of the week) be replacing the high pressure ridge (Shaded “Arch” shape with blue arrows) that has started heating us up a bit again. The graphics for days 3-7 show a frontal system moving through between Friday and Saturday with more fronts coming early next week.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 82 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 50 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 26 in the Moderate category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

__________________

Advisories:

• A RED FLAG WARNING IS IN EFFECT FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FROM 1 AM UNTIL 10 AM WEDNESDAY FOR THE WESTERN ROUGE RIVER AND THE SISKIYOU NATIONAL FOREST.
• A FIRE WEATHER WATCH IS IN EFFECT WEDNESDAY NIGHT THROUGH THURSDAY MORNING A COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FROM 1 AM UNTIL 10 AM WEDNESDAY FOR THE WESTERN ROUGE RIVER AND THE SISKIYOU NATIONAL FOREST.
• 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, to include Shoalwater Bay to the north. 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.
• The Oregon Health Authority issued Health Advisory 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.
• The Oregon Health Authority issued a Health Advisory today 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 issued a Health Advisory 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 has 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.

________________

 

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

• Mostly clear tonight,
• Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night,
• AM clouds, mostly sunny Thursday, mostly clear at night,
• Partly cloudy Friday AM, sunny in the afternoon, clear in the evening, then partly cloudy late Friday night.
• lows 46-50 highs 86-84 warming back to 86 Friday.
• Partly cloudy Saturday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy Saturday night,
• AM clouds and sun, mostly sunny and a bit warmer Sunday afternoon, then partly cloudy and  bit warmer Sunday night through Tuesday.
• highs 82-86 lows 49-52. (seasonal averages high 83 low 51)

 

________________

Eugene-Springfield Pollen Count

Grass………. Low (2)
Trees………. Low (6)
Last Counted: 8/12/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season is over.

________________

Forecast for Roseburg:

• Mostly clear with areas of smoke tonight,
• Sunny with patchy smoke Wednesday, clear with more patchy smoke at night,
• AM clouds and patchy smoke, sunny and a bit warmer with patchy smoke Thursday afternoon, mostly clear with patchy fog late Thursday night,
• Mostly sunny with patchy smoke Friday, then mostly clear with patchy fog at night.
• lows 55-59 cooling to 57 Friday night highs 88-90.
• Mostly sunny and a bit cooler Saturday, mostly clear Saturday night,
• Partly cloudy and a bit cooler Sunday, partly cloudy at night,
• Partly cloudy and a bit warmer Monday through Tuesday.
• highs 87-90 cooling to 88 Tuesday lows 56-58. (seasonal averages high 85 low 56)

_____________________

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

• Mostly clear this evening, partly cloudy with patchy coastal fog late tonight and Wednesday AM, mostly sunny and a bit warmer in the afternoon, mostly clear in the evening, partly cloudy with patchy coastal fog late Wednesday night,
• AM clouds with patchy coastal fog, mostly sunny Thursday afternoon, mostly clear in the evening, partly cloudy with patchy coastal fog late at night,
• Partly cloudy with patchy AM coastal fog, mostly sunny Friday afternoon, mostly clear in the evening,  then partly cloudy late Friday night.
• lows 53-55 highs 68-66.
• Partly cloudy Saturday through Tuesday.
• highs near 65 lows near 55. (seasonal averages high 65 low 53)

________________

Forecast for the Cascades in Lane County:

• Mostly clear tonight,
• Mostly sunny and a bit warmer Wednesday and Thursday, mostly clear at night,
• Sunny and a bit Friday, then clear Friday night.
• free air freezing level above 12,000 ft. tonight through Friday night,
• lows 44-46 highs 73-76.
• Mostly sunny and a bit cooler Saturday, mostly clear at night,
• Mostly sunny Sunday, mostly clear  Sunday night,
• Mostly sunny and a bit warmer Monday, partly cloudy at night,
• AM sun, then partly cloudy Tuesday afternoon.
• free air freezing level above 12,000 ft. Saturday through Tuesday.
• highs 72-78 lows 45-47.

 

________________

**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 “Beaufort Scale?” 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) has helped to change our weather pattern.  Onshore airflow will keep us cooler with the benefit of cleaner air for a little longer, but we do warm up more today. The graphics for days 3-7 show a frontal system moving through Oregon Friday through Monday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 82 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 50 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 26 in the Moderate category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

__________________

Advisories:

• A FIRE WEATHER WATCH IS IN EFFECT THROUGH 10 AM WEDNESDAY FOR THE WESTERN SISKIYOU  NATIONAL FOREST IN THE SOUTHWEST OREGON COAST RANGE MAINLY ABOVE 2,000 FT.
• 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, to include Shoalwater Bay to the north. 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.
• The Oregon Health Authority issued Health Advisory 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.
• The Oregon Health Authority issued a Health Advisory today 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 issued a Health Advisory 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 has 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.

________________

 

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

• Mostly sunny and a bit warmer today and Wednesday, mostly clear both nights,
• AM clouds, mostly sunny Thursday, then mostly clear at night,
• highs 82-86 cooling to 84 Thursday lows 47-54 cooling to 52 Thursday night.
• Mostly sunny and a bit warmer Friday, mostly clear in the evening, partly cloudy late Friday night and Saturday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy Saturday night,
• AM clouds, mostly sunny and a bit cooler Sunday, then partly cloudy Sunday night through Tuesday.
• highs 86-82 lows near 52. (seasonal averages high 83 low 51)

 

________________

Eugene-Springfield Pollen Count

Grass………. Low (2)
Trees………. Low (6)
Last Counted: 8/12/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season is over.

________________

Forecast for Roseburg:

• Mostly sunny and a bit warmer with areas of smoke this afternoon, mostly clear tonight,
• Sunny with patchy smoke Wednesday, clear with more patchy smoke at night,
• AM clouds and patchy smoke, sunny with patchy smoke Thursday afternoon, then mostly clear with patchy fog Thursday night.
• highs 85-90 lows 55-59 cooling to 57.
• Mostly sunny and a bit warmer with patchy smoke Friday and Saturday, mostly clear with patchy smoke both nights,
• Partly cloudy and a bit cooler Sunday, partly cloudy at night,
• Then partly cloudy and a bit warmer Monday.
• highs 90-86 warming to warming to 89 Monday lows 58-56. (seasonal averages high 85 low 56)

_____________________

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

• Sunny and a bit cooler this afternoon, mostly clear this evening, partly cloudy with patchy coastal fog late tonight,
• Patchy AM coastal fog, mostly sunny and a bit warmer Wednesday with patchy lingering fog, partly cloudy with patchy fog late Wednesday night,
• AM clouds and fog, mostly sunny Thursday afternoon,  then mostly clear with patchy fog at night.
• highs near 66 lows near 55.
• Patchy AM fog, mostly sunny Friday afternoon, mostly clear in the evening,  then partly cloudy late Friday night through Monday.
• highs near 65 lows near 55. (seasonal averages high 65 low 53)

________________

Forecast for the Cascades in Lane County:

• A mix of clouds and sun and a bit warmer with patchy smoke today, mostly clear tonight,
• Mostly sunny and a bit warmer Wednesday, mostly clear at night,
• Sunny Thursday, then clear Thursday night.
• free air freezing level 12,000 ft. today, then above 12,000 ft. tonight through Thursday night,
• highs 69-75 lows 45-48.
• Sunny and a bit warmer Friday, clear Friday night,
• Mostly sunny and a bit cooler Saturday, mostly clear at night,
• Mostly sunny Sunday and a bit cooler in the afternoon,mostly clear Sunday night,
• AM sun, then partly cloudy Monday afternoon.
• free air freezing level above 12,000 ft. Friday through Monday.
• highs 76-72 lows 48-46.

 

________________

**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 “Beaufort Scale?” 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) has helped to change our weather pattern.  Onshore airflow will keep us cooler with the benefit of cleaner air for a little longer, but we do start warming up today. The graphics for days 3-7 show a frontal system moving through Oregon Friday through Monday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 33 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 40 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 35 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

__________________

Advisories:

• 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, to include Shoalwater Bay to the north. 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.
• The Oregon Health Authority issued Health Advisory 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.
• The Oregon Health Authority issued a Health Advisory today 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 issued a Health Advisory 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 has 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.

________________

 

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

• Mostly clear at night,
• Mostly sunny and a bit warmer Tuesday and Wednesday, mostly clear both nights,
• AM clouds, mostly sunny Thursday, then mostly clear at night,
• lows 50-54 cooling to 52 Thursday night highs 82-86 cooling to 84 Thursday.
• Mostly sunny and a bit warmer Friday, mostly clear in the evening, partly cloudy late Friday night and Saturday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy Saturday night,
• Then partly cloudy and a bit cooler Sunday through Tuesday.
• highs 86-82 lows near 52. (seasonal averages high 83 low 51)

 

________________

Eugene-Springfield Pollen Count

Grass………. Low (2)
Trees………. Low (3)
Last Counted: 8/10/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season is over.

________________

Forecast for Roseburg:

• Mostly clear tonight,
• Mostly sunny and a bit warmer Tuesday and Wednesday, mostly clear both nights,
• AM clouds, sunny Thursday afternoon, then mostly clear Thursday night.
• lows 53-57 highs 85-90.
• Mostly sunny and a bit warmer Friday and Saturday, mostly clear each night,
• Then partly cloudy Sunday and a bit cooler Sunday, partly cloudy at night,
• Then partly cloudy and a bit warmer Monday.
• highs 90-87 warming to warming to 89 Monday lows 58-56. (seasonal averages high 85 low 56)

_____________________

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

• Clear this evening, mostly cloudy with patchy coastal fog late tonight and Tuesday AM, sunny and a bit cooler Tuesday afternoon, mostly clear in the evening, mostly cloudy with patchy coastal fog late Tuesday night,
• Patchy AM fog, mostly sunny and a bit warmer Wednesday with patchy lingering fog, partly cloudy with patchy fog late Wednesday night,
• Patchy AM and late night fog Thursday otherwise just partly cloudy.
• lows near 55 highs near 66.
• Patchy AM and late night fog otherwise just partly cloudy Friday, then partly cloudy Friday night through Monday.
• highs near 65 lows near 55. (seasonal averages high 65 low 53)

________________

Forecast for the Cascades in Lane County:

• Mostly clear with patchy smoke tonight,
• Mostly sunny and a bit warmer with patchy smoke Tuesday and Wednesday, mostly clear both nights,
• Sunny Thursday, then clear at night.
• free air freezing level above 12,000 ft. falling to 12,000 ft. late tonight, 12,000 ft. Tuesday, then above 12,000 ft. Tuesday night through Thursday night,
• lows 43-48 highs 69-75.
• Sunny and a bit warmer Friday, clear Friday night,
• Mostly sunny and a bit cooler Saturday, mostly clear at night,
• Mostly sunny Sunday AM, partly cloudy and a bit cooler in the afternoon, then just partly cloudy Sunday night and Monday.
• free air freezing level above 12,000 ft. Friday through Monday.
• highs 76-72 lows 48-46.

 

________________

**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 “Beaufort Scale?” 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) has helped to change our weather pattern.  Onshore airflow will keep us cooler with the benefit of cleaner air for a little longer, but we do start warming up today. The graphics for days 3-7 show a frontal system moving through Oregon Friday through Monday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 21 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 18 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 12 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

__________________

Advisories:

• 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, to include Shoalwater Bay to the north. 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.
• The Oregon Health Authority issued Health Advisory 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.
• The Oregon Health Authority issued a Health Advisory today 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 issued a Health Advisory 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 has 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.

________________

 

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

• Mostly cloudy this AM, mostly sunny and warmer this afternoon and Tuesday, mostly clear both nights,
• Mostly sunny and a bit warmer Wednesday, then partly cloudy Wednesday night.
• highs 79-84 lows 48-55.
• Mostly sunny and a bit warmer Thursday and Friday, mostly clear both nights,
• Mostly sunny and a bit cooler Saturday, partly cloudy at night,
• Mostly sunny in the AM, then partly cloudy Sunday afternoon.
• highs 85-87 cooling back to 85 Sunday lows near 53. (seasonal averages high 83 low 51)

 

________________

Eugene-Springfield Pollen Count

Grass………. Low (2)
Trees………. Low (3)
Last Counted: 8/10/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season is over.

________________

Forecast for Roseburg:

• Mostly cloudy this AM, sunny and a bit warmer this afternoon and Tuesday, mostly clear both nights,
• Mostly sunny and a bit warmer Wednesday, then mostly clear at night.
• highs 82-87 lows 53-57.
• Mostly sunny and a bit warmer Thursday, Friday, and Saturday, mostly clear each night,
• Sunny Sunday AM, then partly cloudy and a bit cooler in the afternoon.
• highs 89-92 cooling to 88 Sunday lows near 58. (seasonal averages high 85 low 56)

_____________________

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

• Mostly cloudy with patchy coastal fog this AM, sunny and a bit cooler this afternoon, clear this evening, mostly cloudy with patchy coastal fog late tonight,
• Mostly cloudy with patchy coastal fog in the AM, sunny and a bit warmer Tuesday afternoon, mostly clear in the evening, mostly cloudy late Tuesday night,
• Patchy AM fog, partly cloudy and a bit warmer Wednesday with patchy lingering fog, then partly cloudy with patchy fog late Wednesday night.
• highs 66-72 lows 53-55.
• Patchy AM and late night fog Thursday through Friday, then partly cloudy Friday night through Sunday night.
• highs 72-65 lows near 55. (seasonal averages high 65 low 53)

________________

Forecast for the Cascades in Lane County:

• Mostly sunny and a bit warmer today, Tuesday, and Wednesday (a bit warmer), mostly clear each night.
• free air freezing level 13,000 ft. today, 13,000 ft. rising to 14,000 ft. tonight, 13,000 ft. Tuesday, 13,000 ft. rising 14,000 ft. Tuesday night, 14,000 ft. rising to 15,000 ft. Wednesday afternoon, then 15,000 ft. Wednesday night.
• highs 67-72 lows 44-48.
• Mostly sunny and a bit warmer Thursday, clear at night,
• Sunny and a bit warmer Friday, mostly clear Friday night,
• Mostly sunny and a bit cooler Saturday, mostly clear at night,
• Mostly sunny Sunday AM, then partly cloudy and a bit cooler in the afternoon.
• free air freezing level 15,000 ft. Thursday and Thursday night, 15,000 ft. falling to 14,000 ft. Friday,  then 14,000 ft. Friday night through Sunday.
• highs 76-73 lows 50-48.

 

________________

**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 “Backwater Effect?” Here is the correct answer. The Backwater Effect in hydrologic terms, the effect which a dam or other obstruction has in raising the surface of the water upstream from it. I’ll have a new weekly weather quiz question for you starting 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) has helped to change our weather pattern.  Onshore airflow will keep us cooler with the benefit of cleaner air for a little longer. The graphics for days 3-7 show a frontal system moving through Oregon Saturday through Monday.

Note: The Perseid Meteor Shower peaks this weekend from tonight. The moon will be about three quarters full so that will make viewing more difficult. Best viewing time will be after midnight and before dawn. Get away from the city lights and the sky won’t have the glow of city lights to obstruct your view.

 

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 17 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 14 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

__________________

Advisories:

• The Oregon Health Authority issued a Health Advisory today 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, to include Shoalwater Bay to the north. 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.
• The Oregon Health Authority issued Health Advisory 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.
• The Oregon Health Authority issued a Health Advisory today 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 issued a Health Advisory 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 has 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.

________________

 

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

• Mostly cloudy this evening, partly cloudy late tonight and Monday AM, mostly sunny and warmer in the afternoon and Tuesday, mostly clear both nights,
• Mostly sunny and a bit warmer Wednesday, then partly cloudy Wednesday night.
• lows 52-49 warming to 55 Wednesday night highs 79-84.
• Mostly sunny and a bit warmer Thursday and Friday, mostly clear both nights,
• Mostly sunny and a bit cooler Saturday, partly cloudy at night,
• Mostly sunny in the AM, then partly cloudy Sunday afternoon.
• highs 85-87 cooling back to 85 Sunday lows near 53. (seasonal averages high 83 low 51)

 

________________

Eugene-Springfield Pollen Count

Grass………. Low (2)
Trees………. Low (3)
Last Counted: 8/10/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season is over.

________________

Forecast for Roseburg:

• Mostly cloudy tonight and Monday AM, sunny and a bit warmer Monday afternoon and Tuesday, mostly clear both nights,
• Mostly sunny and a bit warmer Wednesday, then mostly clear at night.
• lows 56-53 warming to 57 Wednesday night highs 82-87.
• Mostly sunny and a bit warmer Thursday, Friday, and Saturday, mostly clear each night,
• Sunny Sunday AM, then partly cloudy and a bit cooler in the afternoon.
• highs 89-92 cooling to 88 Sunday lows near 58. (seasonal averages high 85 low 56)

_____________________

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

• Mostly cloudy with patchy coastal fog late tonight and Monday AM, sunny and a bit cooler in the afternoon, clear in the evening, mostly cloudy with patchy coastal fog late Monday night,
• Mostly cloudy with patchy coastal fog in the AM, sunny and a bit warmer Tuesday afternoon, mostly clear in the evening, mostly cloudy late Tuesday night,
• Patchy AM fog, partly cloudy and a bit warmer Wednesday with patchy lingering fog, then partly cloudy with patchy fog late Wednesday night.
• lows near 55 highs 66-72.
• Patchy AM and late night fog Thursday through Friday, then partly cloudy Friday night through Sunday night.
• highs 72-65 lows near 55. (seasonal averages high 65 low 53)

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy this evening with a slight (20%) chance of showers, becoming partly cloudy late tonight,
• Mostly sunny and a bit warmer Monday, Tuesday, and Wednesday (a bit warmer), mostly clear each night.
• snow level above 8,000 ft. this evening, free air freezing level 12,000 ft. rising to 13,000 ft. Monday, 13,000 ft. Monday night, 13,000 ft. rising to 14,000 ft. Tuesday afternoon, 14,000 ft. Tuesday night,  15,000 ft. rising to 16,000 ft. Wednesday afternoon, 16,000 ft. falling to 15,000 ft. Wednesday night.
• lows 45-48 highs 67-72.
• Mostly sunny and a bit warmer Thursday, clear at night,
• Sunny and a bit warmer Friday, mostly clear Friday night,
• Mostly sunny and a bit cooler Saturday, mostly clear at night,
• Mostly sunny Sunday AM, then partly cloudy and a bit cooler in the afternoon.
• free air freezing level 15,000 ft. rising to 16,000 ft. Thursday, 16,000 ft. falling to 15,000 ft. Thursday night, 15,000 ft. falling to 14,000 ft. Friday, 14,000 ft. rising to 15,000 ft. Friday night, then 15,000 ft. Saturday through Sunday.
• highs 76-73 lows 50-48.

 

________________

**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 “Backwater Effect?” Here is the correct answer. The Backwater Effect in hydrologic terms, the effect which a dam or other obstruction has in raising the surface of the water upstream from it. I’ll have a new weekly weather quiz question for you starting 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.

________________

 

The graphics for days 1-3 show a frontal system moving through the Pacific Northwest today. An Upper Level Low Pressure Trough (Shaded “U”shape with blue arrows) is helping to change our weather pattern.  Onshore airflow will keep us cooler with the benefit of cleaner air. The graphics for days 3-7 show a frontal system moving through Oregon Saturday and Sunday.

Note: The Perseid Meteor Shower peaks this weekend from tonight through Sunday night. The moon will be about three quarters full so that will make viewing more difficult. Here cloud cover could be a problem as well as any residual smokey haze. Best viewing time will be after midnight and before dawn each night. Get away from the city lights and the sky won’t have the glow of city lights to obstruct your view.

 

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 27 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 33 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 25 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

__________________

Advisories:

• The Oregon Health Authority issued a Health Advisory today 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, to include Shoalwater Bay to the north. 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.
• The Oregon Health Authority issued Health Advisory 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.
• The Oregon Health Authority issued a Health Advisory today 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 issued a Health Advisory 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 has 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.

________________

 

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

• Cloudy with a good (50%) chance of AM showers (under 0.10 in. of rain possible), a mix of clouds and sun this afternoon, partly cloudy tonight,
• AM clouds, mostly sunny and a bit warmer Monday afternoon, mostly clear Monday night,
• Mostly sunny and a bit warmer Tuesday, then partly cloudy at night.
• highs 75-82 lows 53-50 warming to 52 Tuesday night.
• Partly cloudy in the AM, mostly sunny and a bit warmer Wednesday, partly cloudy at night,
• Partly cloudy Thursday AM, mostly sunny and a bit warmer in the afternoon, mostly clear Thursday night,
• Mostly sunny and a bit warmer Friday afternoon, mostly clear at night,
• Mostly sunny in the AM, then partly cloudy and a bit cooler Saturday afternoon.
• highs 87-89 cooling back to 87 Saturday lows near 55. (seasonal averages high 83 low 51)

 

________________

Eugene-Springfield Pollen Count

Grass………. Low (2)
Trees………. Low (3)
Last Counted: 8/10/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season is over.

________________

Forecast for Roseburg:

• Mostly cloudy with a (30%) chance of AM showers, mostly cloudy and a bit cooler this afternoon (under 0.10 in. of rain possible), partly cloudy this evening, mostly cloudy late tonight,
• AM clouds, sunny and a bit warmer Monday afternoon, mostly clear at night,
• Mostly sunny and a bit warmer Tuesday, then mostly clear at night.
• highs 79-85 lows 57-54 warming to 54 Tuesday night.
• Mostly sunny and a bit warmer Wednesday and Thursday, mostly clear both nights,
• Mostly sunny Friday, mostly clear at night,
• Then sunny Saturday.
• highs 88-94 cooling to 82 Saturday lows 57-60. (seasonal averages high 86 low 56)

_____________________

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

• Mostly cloudy with a (30%) chance of scattered AM showers (under 0.10 in. of rain possible), just mostly cloudy this afternoon and tonight,
• AM clouds with patchy coastal fog Monday, sunny in the afternoon, partly cloudy in the evening, mostly cloudy late Monday night,
• Mostly cloudy with patchy fog in the AM, sunny and a bit warmer Tuesday afternoon, then partly cloudy Tuesday night.
• highs 63-66  cooling back to 63 Tuesday lows 55-52.
• Partly cloudy and a bit warmer Wednesday through Thursday night,
• AM clouds, sunny and a bit cooler Friday, clear in the evening, partly cloudy at night,
• Then AM clouds and mostly sunny Saturday.
• highs 68-65 lows near 55. (seasonal averages high 65 low 53)

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of AM showers, mostly cloudy with a slight (20%) chance of showers this afternoon, becoming mostly clear tonight,
• AM clouds, mostly sunny and a bit warmer Monday afternoon, mostly clear at night,
• Sunny and a bit warmer Tuesday, then mostly clear Tuesday night.
• snow level above 8,000 ft. today, free air freezing level 13,000 ft. tonight, 12,000 ft. rising to 13,000 ft. Monday, 13,000 ft. Monday night, 13,000 ft. rising to 15,000 ft. Tuesday, then 15,000 ft. Tuesday night.
• highs 63-69 lows near 46.
• AM sun, a mix of clouds and sun and a bit warmer Wednesday afternoon, partly cloudy at night,
• Mostly sunny and a bit warmer Thursday and Friday, mostly clear both nights,
• Then mostly sunny and a bit cooler Saturday.
• free air freezing level 15,000 ft. rising to 16,000 ft. Wednesday afternoon, 16,000 ft. Wednesday night through Thursday night, 16,000 ft. falling to 15,000 ft. Friday, then 16,000 ft. Friday night and Saturday.
• highs 75-78 cooling back to 78 Saturday lows 48-50.

 

________________

**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 “Backwater Effect?” Here is the correct answer. The Backwater Effect in hydrologic terms, the effect which a dam or other obstruction has in raising the surface of the water upstream from it. I’ll have a new weekly weather quiz question for you starting 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.

________________

 

The graphics for days 1-3 show a frontal system moving through the Pacific Northwest Sunday. An Upper Level Low Pressure Trough (Shaded “U”shape with blue arrows) is helping to change our weather pattern.  Onshore airflow will keep us cooler with the benefit of cleaner air. The graphics for days 3-7 show a frontal system moving through Oregon Saturday and Sunday.

Note: The Perseid Meteor Shower peaks this weekend from tonight through Sunday night. The moon will be about three quarters full so that will make viewing more difficult. Here cloud cover could be a problem as well as any residual smokey haze. Best viewing time will be after midnight and before dawn each night. Get away from the city lights and the sky won’t have the glow of city lights to obstruct your view.

 

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 27 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 33 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 25 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

__________________

Advisories:

• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING AND OUTFLOW WINDS UNTIL 11 PM TONIGHT FOR THE CENTRAL MOUNTAINS OF OREGON, THE NORTHERN BLUE MOUNTAINS OF OREGON, THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS OF OREGON, THE CENTRAL BLUE MOUNTAINS OF OREGON, THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE COUNTY, AND WESTERN HARNEY COUNTY.
• The Oregon Health Authority issued a Health Advisory today 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, to include Shoalwater Bay to the north. 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.
• The Oregon Health Authority issued Health Advisory 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.
• The Oregon Health Authority issued a Health Advisory today 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 issued a Health Advisory 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 has 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.

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

• Partly cloudy this evening, mostly cloudy with a good (50%) chance of rain late tonight (under 0.10 in. of rain possible),
• Cloudy with a good (50%) chance of AM showers (under 0.10 in. of rain possible), a mix of clouds and sun Sunday afternoon, mostly clear at night,
• AM clouds and sun, mostly sunny and a bit warmer Monday afternoon, mostly clear Monday night,
• Mostly sunny and a bit warmer Tuesday, then partly cloudy at night.
• lows 57-50 warming to 52 Tuesday night highs 75-82.
• Partly cloudy in the AM, mostly sunny and a bit warmer Wednesday, partly cloudy at night,
• Partly cloudy Thursday AM, mostly sunny and a bit warmer in the afternoon, mostly clear Thursday night,
• Partly cloudy Friday AM, mostly sunny and a bit warmer in the afternoon, mostly clear at night,
• Mostly sunny in the AM, then partly cloudy and a bit cooler Saturday afternoon.
• highs 87-89 cooling back to 87 Saturday lows near 55. (seasonal averages high 83 low 51)

 

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Eugene-Springfield Pollen Count

Grass………. Low (2)
Trees………. Low (3)
Last Counted: 8/10/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season is over.

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Forecast for Roseburg:

• Partly cloudy this evening, mostly cloudy with a slight (20%) chance of isolated showers late tonight,
• Mostly cloudy with a (30%) chance of AM showers, mostly cloudy and a bit cooler Sunday afternoon (under 0.10 in. of rain possible), partly cloudy in the evening, mostly cloudy late Sunday night,
• AM clouds, sunny and a bit warmer Monday afternoon, mostly clear at night,
• Mostly sunny and a bit warmer Tuesday, then mostly clear at night.
• lows 58-54 warming to 54 Tuesday night highs 79-85.
• Mostly sunny and a bit warmer Wednesday and Thursday, mostly clear both nights,
• Mostly sunny Friday, mostly clear at night,
• Then sunny Saturday.
• highs 88-94 cooling to 82 Saturday lows 57-60. (seasonal averages high 86 low 56)

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

• Mostly cloudy with a slight (20%) chance of scattered coastal showers late tonight while partly cloudy this evening and mostly cloudy with isolated inland showers late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of scattered AM showers (under 0.10 in. of rain possible), just mostly cloudy Sunday afternoon and at night,
• AM clouds with patchy coastal fog Monday, sunny in the afternoon, partly cloudy in the evening, mostly cloudy late Monday night,
• Mostly cloudy with patchy fog in the AM, sunny and a bit warmer Tuesday afternoon, then partly cloudy Tuesday night.
• lows 56-52 highs 63-66  cooling back to 63 Tuesday.
• Partly cloudy and a bit warmer Wednesday through Thursday night,
• AM clouds, sunny and a bit cooler Friday, clear in the evening, partly cloudy at night,
• Then AM clouds and mostly sunny Saturday.
• highs 68-65 lows near 55. (seasonal averages high 65 low 53)

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Forecast for the Cascades in Lane County:

• Clear this evening, partly cloudy late tonight,
• Mostly cloudy with a good (50%) chance of AM showers, mostly cloudy with a slight (20%) chance of showers Sunday afternoon, becoming mostly clear Sunday night,
• Mostly sunny and a bit warmer Monday afternoon, mostly clear at night,
• Sunny and a bit warmer Tuesday, then mostly clear Tuesday night.
• free air freezing level 14,000 ft. tonight, snow level above 8,000 ft. Sunday, free air freezing level 13,000 ft. Sunday night, 12,000 ft. rising to 13,000 ft. Monday, 13,000 ft. Monday night, 13,000 ft. rising to 15,000 ft. Tuesday, then 15,000 ft. Tuesday night.
• lows 50-45 highs 63-69.
• AM sun, a mix of clouds and sun and a bit warmer Wednesday afternoon, partly cloudy at night,
• Mostly sunny and a bit warmer Thursday and Friday, mostly clear both nights,
• Then mostly sunny and a bit cooler Saturday.
• free air freezing level 15,000 ft. rising to 16,000 ft. Wednesday afternoon, 16,000 ft. Wednesday night through Thursday night, 16,000 ft. falling to 15,000 ft. Friday, then 16,000 ft. Friday night and Saturday.
• highs 75-78 cooling back to 78 Saturday lows 48-50.

 

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**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.

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

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Here is my weekly weather quiz question for the last time. What is the “Backwater Effect?” Here is the correct answer. The Backwater Effect in hydrologic terms, the effect which a dam or other obstruction has in raising the surface of the water upstream from it. I’ll have a new weekly weather quiz question for you starting 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.

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An Upper Level High Pressure Ridge (“Arch”shape with blue arrows) is still dominating our weather picture. The graphics for days 1-3 show a frontal system approaching the Pacific Northwest Sunday. An Upper Level Low Pressure Trough (Shaded “U”shape with blue arrows) will help change our weather pattern for next week. The graphics for days 3-7 show a frontal system approaching and then moving through  Oregon late next week.

Note: The Perseid Meteor Shower peaks this weekend from tonight through Sunday night. The moon will be about three quarters full so that will make viewing more difficult. Here cloud cover could be a problem as well as any residual smokey haze. Best viewing time will be after midnight and before dawn each night. Get away from the city lights and the sky won’t have the glow of city lights to obstruct your view.

 

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 13 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 72 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 17 in the Good category measuring Ozone.

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 OUTFLOW WINDS UNTIL 11 PM TONIGHT FOR THE CENTRAL MOUNTAINS OF OREGON, THE NORTHERN BLUE MOUNTAINS OF OREGO, THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS OF OREGON, AND FOR THE CENTRAL BLUE MOUNTAINS OF OREGON.
• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING ON DRY FUELS FROM 2 PM UNTIL 11 PM TODAY FOR THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE COUNTY, AND WESTERN HARNEY COUNTY.
• The Oregon Health Authority issued a Health Advisory today 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, to include Shoalwater Bay to the north. 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.
• The Oregon Health Authority issued Health Advisory 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.
• The Oregon Health Authority issued a Health Advisory today 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 issued a Health Advisory 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 has 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.

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

• A mix of clouds and sun this afternoon, partly cloudy this evening, mostly cloudy with a good (50%) chance of rain late tonight (under 0.10 in. of rain possible),
• Cloudy with a good (50%) chance of AM showers (0.10 in. of rain possible), a mix f clouds and sun Sunday afternoon, partly cloudy at night,
• AM clouds and sun,  mostly sunny and a bit warmer Monday afternoon, then partly cloudy Monday night.
• highs 78-82 lows 55-52.
• Partly cloudy in the AM, mostly sunny and a bit warmer Tuesday afternoon, partly cloudy at night,
• Partly cloudy and a bit warmer Wednesday through Thursday AM, mostly sunny in the afternoon, partly cloudy Thursday night,
• Partly cloudy Friday AM, then mostly sunny and a bit warmer in the afternoon.
• highs 82-88 lows 52-55. (seasonal averages high 83 low 52)

 

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Eugene-Springfield Pollen Count

Grass………. Low (2)
Trees………. Low (3)
Last Counted: 8/10/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season is over.

________________

Forecast for Roseburg:

• Mostly cloudy and a bit cooler with patchy smoke this afternoon, partly cloudy this evening, mostly cloudy with a slight (20%) chance of isolated showers late tonight,
• A slight (20%) chance of AM showers, mostly cloudy and a bit cooler Sunday afternoon and evening, mostly cloudy late Sunday night,
• AM clouds, sunny and a bit warmer Monday afternoon, mostly clear at night.
• highs near 84 lows 58-50.
• Partly cloudy in the AM, sunny and a bit warmer Tuesday afternoon, mostly clear at night,
• Mostly sunny and a bit warmer Wednesday and Thursday, mostly clear each night,
• Then sunny Friday.
• highs 86-94 lows 53-60. (seasonal averages high 86 low 56)

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

• Mostly cloudy this afternoon, mostly cloudy with a slight (20%) chance of scattered coastal showers late tonight while isolated inland showers late,
• Mostly cloudy with a (30%) chance of AM showers, mostly cloudy Sunday afternoon and at night,
• AM clouds with patchy coastal fog Monday, sunny in the afternoon, partly cloudy in the evening, then mostly cloudy late Monday night.
• highs near 64 lows 56-52.
• Mostly cloudy with patchy fog in the AM, sunny and a bit warmer Tuesday afternoon, mostly clear Tuesday night,
• Mostly sunny and a bit warmer Wednesday, partly cloudy Wednesday night and Thursday (a bit warmer), mostly clear at night,
• Then mostly sunny and a bit cooler Friday, mostly clear Thursday night.
• highs 68-73 cooling to 70 Friday lows 53-55. (seasonal averages high 65 low 53)

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Forecast for the Cascades in Lane County:

• Mostly sunny and a bit cooler this afternoon, partly cloudy tonight,
• Mostly cloudy with a good (50%) chance of AM showers, mostly cloudy with a slight (20%) chance of showers Sunday afternoon, just partly cloudy Sunday night,
• Partly cloudy in the AM, mostly sunny and a bit cooler Monday afternoon and at night.
• free air freezing level 13,000 ft. today, 14,000 ft. tonight, snow level above 8,000 ft. Sunday, free air freezing level 13,000 ft. Sunday night, 12,000 ft. rising to 13,000 ft. Monday, then 13,000 ft. Monday night.
• highs 74-65 warming to 68 Monday lows 49-45.
• Partly cloudy Tuesday AM, mostly sunny and a bit warmer in the afternoon, partly cloudy Tuesday night,
• Mostly sunny and a bit warmer Wednesday , Thursday, and Friday, partly cloudy to mostly clear at night.
• free air freezing level 13,000 ft. rising to 15,000 ft. Tuesday, 15,000 ft. Tuesday night through Wednesday night, 15,000 ft. rising to 16,000 ft. Thursday afternoon, then 16,000 ft. Thursday night and Friday.
• highs 68-76 lows 46-48.

 

________________

**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.

________________