Here is my new weekly weather quiz question. What is a “Bow Echo?” 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 Low Pressure Trough (Shaded “U” shape with blue arrows) returns marine airflow to the Willamette Valley for a while cooling us down. The graphics for days 3-7 show a frontal system that will push through the Pacific Northwest Monday night into Tuesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 26 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 24 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)

 

 

 

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Advisories:

• A FREEZE WATCH IS IN EFFECT FROM 2 AM UNTIL 8 PM FRIDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN CENTRAL AND EASTERN LAKE COUNTY.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 10 AM FRIDAY FOR WASCO COUNTY.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and now all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

 

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Your College Football Forecast:

Saturday September 16th–

Ducks vs Wyoming, at War Memorial Stadium – Laramie, Wyoming– Kickoff: 4:00 PM PDT – Partly cloudy, a slight chance of showers, 62 degrees and cooling as the game progresses, wind SW 15 mph.

Beavers vs Washington State, at Martin Stadium – Pullman, Washington– Kickoff: 2:30 PM PDT- Mostly sunny, 62 degrees warming to 66 degrees, then slow cooling toward the end of the game, wind ESE 10 mph.

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

• Mostly sunny this afternoon, mostly clear tonight,
• Mostly sunny and a bit warmer Friday, clear in the evening, partly cloudy at night,
• A mix of clouds and sun and a bit cooler Saturday, then mostly cloudy Saturday night.
• highs 78- 80 cooling to 77 Saturday lows 46-50.
• Mostly cloudy and a bit cooler Sunday with rain becoming likely (70%) in the afternoon and Sunday night,
• Cloudy with rain likely (70%) Monday AM, showers likely (70%) and a bit cooler in the afternoon and at night,
• Mostly cloudy with showers likely (70%) in the AM, a good (50%) chance of showers and a bit warmer Tuesday afternoon, mostly cloudy with a (40%) chance of showers at night,
• Then a mix of clouds and sun with a (30%) chance of showers Wednesday.
• highs 72-63 warming to 66 Wednesday lows 52-49. (seasonal averages high 78 low 47)

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Forecast for Roseburg:

• Sunny and a bit cooler this afternoon, clear tonight,
• Sunny and a bit warmer Friday, clear Friday night,
• Partly cloudy in the AM, mostly cloudy and a bit cooler  Saturday afternoon and Saturday night.
• highs 73-80 cooling to 73 Saturday lows 49-47 warming back to 49 Saturday night.
• Partly cloudy in the AM, mostly cloudy and a bit cooler with rain likely (70%) Sunday afternoon, evening rain with patchy smoke,  rain with patchy smoke late at night,
• Mostly cloudy with AM rain likely (70%), patchy smoke and a bit cooler with showers likely (60%) in the afternoon through Tuesday AM, a good (50%) chance of showers in the afternoon, a (40%) chance of showers at night,
• Then mostly cloudy with patchy smoke and a slight (20%) chance of showers Wednesday.
• highs 73-63 warming to 65 Tuesday and Wednesday lows 52-49. (seasonal averages high 79 low 52)

 

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

• Mostly sunny and a bit cooler this afternoon, partly cloudy in the evening at the shore and mostly cloudy late tonight while mostly clear inland tonight,
• AM clouds, sunny and a bit warmer Friday afternoon, mostly clear in the evening, partly cloudy late at night,
• Partly cloudy in the AM, mostly cloudy and a bit cooler Saturday afternoon and Saturday night.
• highs 63-65 cooling back to 63 Saturday lows 49-52.
• Mostly cloudy with rain likely (60%) and a bit warmer Sunday afternoon and Sunday night,
• Mostly cloudy with showers likely (70%) Monday through Tuesday AM, a bit cooler with a good (50%) chance of showers Tuesday afternoon, mostly cloudy with a (30%) chance of showers Tuesday night,
• Then mostly cloudy with a slight (20%) chance of showers and a bit warmer Wednesday.
• highs 64-60 warming back to 64Wednesday lows near 52. (seasonal averages high 65 low 50)

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Forecast for the Cascades in Lane County:

• Partly cloudy with areas of smoke and a bit cooler this afternoon, partly cloudy this evening,  clear with areas of smoke late tonight,
• Mostly sunny with areas of smoke and a bit warmer Friday, mostly clear with areas of smoke at night,
• A mix of clouds and sun and a bit warmer with areas of smoke Saturday, mostly cloudy with areas of evening smoke, then partly cloudy with areas of smoke late Saturday night.
• free air freezing level 10,000 ft. this afternoon, 10,000 ft. falling to 9,000 ft. late tonight, 9,000 ft. rising to 10,000 ft. Friday, 10,000 ft. rising to 11,000 ft. late Friday night, 10,000 ft. Saturday, then 11,000 ft. falling to 10,000 ft. Saturday night.
• highs 54-64 lows 36-42.
• Areas of AM smoke, a mix of clouds and sun and a bit cooler with rain Sunday afternoon and evening, rain and snow late Sunday night and Monday AM, a bit cooler with a rain and snow showers likely (70%) Monday afternoon and at night,
• Mostly cloudy with AM rain and snow showers likely (70%), a (40%) chance of rain and snow showers and a bit cooler Tuesday afternoon, a (40%) chance of showers Tuesday night,
• Then mostly cloudy with a (30%) chance of showers and a bit warmer Wednesday.
• free air freezing level 10,000 ft. Sunday AM, snow level above 8,000 ft. Sunday afternoon, 8,000 ft. falling to 6,000 ft. late Sunday night, 6,000 ft. falling to 5,500 ft. Monday, 5,500 ft. rising to 6,000 ft. late Monday night, 6,000 ft. rising to 6,500 ft. Tuesday afternoon, then 6,500 ft. Tuesday night and Wednesday.
• highs 62-48 warming to 50 Wednesday lows 42-36.

 

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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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