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

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 74 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 65 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 73 in the Moderate category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

 

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Advisories:

• A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING ON DRY FUELS FROM 1 PM TODAY UNTIL 8 PM TONIGHT FOR THE WESTERN KLAMATH NATIONAL FOREST, THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 10 AM WEDNESDAY FOR HOOD RIVER 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 – Mostly cloudy, showers 58 degrees and cooling as the game progresses.

Beavers vs Washington State, at Martin Stadium – Pullman, Washington– Kickoff: 2:30 PM PDT- Partly cloudy 65 degrees warming to 69 degrees, then slow cooling toward the end of the game.

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

• Mostly sunny and a bit cooler with patchy smoke this afternoon, partly cloudy and a bit cooler tonight through Wednesday night,
• Partly cloudy and a bit cooler Thursday and in the evening, then mostly cloudy late at night.
• highs 85-72 lows 52-45.
• A mix of clouds and sun and a bit warmer Friday, partly cloudy and a bit warmer Friday night through Saturday night,
• Mostly cloudy Sunday with a good (50%) chance of afternoon and evening, rain becoming likely (70%) late Sunday night,
• Cloudy with AM rain likely (70%) Monday, then a bit cooler with a good (50%) chance of showers Monday afternoon.
• highs 74-67  lows 46-50. (seasonal averages high 78 low 48)

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Forecast for Roseburg:

• A slight (20%) chance of AM showers, sunny with patchy smoke and a bit cooler this afternoon, mostly clear with patchy smoke tonight,
• AM sun, partly cloudy and a bit cooler with patchy smoke Wednesday afternoon and Wednesday night,
• Then partly cloudy and a bit cooler with patchy smoke Thursday and at night.
• highs 90-72 lows 55-48.
• Partly cloudy with patchy smoke and a bit warmer Friday through Saturday night,
• Mostly cloudy and a bit warmer with patchy smoke and a (30%) chance of rain Sunday and at night,
• Mostly cloudy with a good (50%) chance of AM rain, then patchy smoke with a good (50%) chance of showers and a bit cooler Monday afternoon.
• highs 78-67 lows 48-53. (seasonal averages high 80 low 52)

 

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

• Sunny and a bit cooler today, partly cloudy tonight,
• Partly cloudy and a bit cooler Wednesday and in the evening, mostly cloudy late at night,
• Partly cloudy and a bit cooler Thursday and Thursday night.
• highs 66-63 lows 53-49.
• Partly cloudy and a bit cooler Friday through Saturday evening, becoming mostly cloudy with a slight (20%) chance of showers Saturday night and Sunday AM, a good (50%) chance of rain and a bit warmer in the afternoon, then cloudy with rain likely (60%) Sunday night and Monday (a bit cooler).
• highs 63-67 cooling back to 63 Monday lows 49-53. (seasonal averages high 65 low 51)

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Forecast for the Cascades in Lane County:

• Mostly sunny with areas of smoke this afternoon, partly cloudy and cooler with areas of smoke tonight and Wednesday, partly cloudy with areas of smoke and colder Wednesday night,
• Partly cloudy with areas of smoke and a bit cooler Thursday and at night.
• free air freezing level 14,000 ft. today and tonight, 13,000 ft. Wednesday, 12,000 ft. Wednesday night, 11,000 ft. falling to 9,000 ft. Thursday, then 9,000 ft. late Thursday night.
• highs 74-54 lows 47-35.
• Partly cloudy with areas of smoke and a bit warmer Friday through Saturday night,
• Areas of AM smoke, a mix of clouds and sun and a bit warmer with patchy smoke and a (40%) chance of rain Sunday afternoon, mostly cloudy with a (40%) chance of evening rain, patchy smoke with rain likely (70%) late Sunday night,
• Cloudy with AM rain likely (70%), then a bit cooler with a good (50%) chance of showers with patchy smoke Monday afternoon.
• free air freezing level 10,000 ft. Friday through Saturday, 11,000 ft. Saturday night and Sunday morning, snow level above 8,000 ft. Sunday afternoon and Sunday night, then above 8,000 ft. falling to 6,500 ft. Monday afternoon.
• highs 60-63 cooling to 55 Monday lows 40-44.

 

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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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