Here is my new weekly weather quiz question. What is a “Cap Cloud?” 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) moves to the south (bringing some late afternoon showers) as an Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) starts to move toward us. The graphics for days 3-7 show a cold front moving from the northwest at us Saturday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 9 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 0 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

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Advisories:

• A FREEZE WARNING IS IN EFFECT FROM 1 AM UNTIL 9 AM TUESDAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
• A Health Advisory has been Reissued for the Link and Klamath rivers to Keno Dam. An error caused the advisory to be cancelled. 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.
• 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:

October 7th:

Ducks vs Washington State, at Autzen Stadium – Kickoff: 5:00 PM PDT – Partly cloudy 67, slight chance of showers, cooling as the game progresses.

Beavers vs USC, at Los Angeles Coliseum – Kickoff: 1:00 PM PDT – Sunny 85 warming to near 90 by the end of the game.

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

• Clear tonight,
• Sunny and a bit warmer Tuesday and Wednesday, clear Tuesday night, mostly clear Wednesday night,
• Sunny and a bit warmer Thursday, then clear at night.
• lows 38-43 highs 70-73.
• Sunny and a bit cooler Friday, partly cloudy with a slight (20%) chance of showers Friday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers Saturday and at night,
• Mostly sunny but a bit warmer Sunday, mostly clear Sunday night,
• Then mostly sunny and a bit warmer Monday (Columbus Day).
• highs 73-66 warming to 70 Monday lows 45-40. (seasonal averages high 70 low 43)

 

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Forecast for Roseburg:

• Partly cloudy this evening, mostly clear late tonight,
• Patchy AM frost, sunny and a bit warmer Tuesday afternoon, clear at night,
• Sunny and a bit warmer Wednesday, mostly clear Wednesday night,
• Mostly sunny and a bit warmer Thursday, then mostly clear Thursday night.
• lows 42-47 highs 73-77.
• Mostly sunny Friday, mostly clear Friday night,
• Partly cloudy and a bit cooler Saturday, mostly clear at night,
• Mostly sunny and a bit cooler Sunday, mostly clear Sunday night,
• Then sunny and a bit warmer Monday (Columbus Day).
• highs 77-69 warming to 75 Monday lows 47-45. (seasonal averages high 73 low 48)

 

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

• Mostly clear tonight,
• Sunny and a bit warmer Tuesday and Wednesday, clear both nights,
• Mostly sunny Thursday, then mostly clear at night.
• lows 44-52 highs 68-70.
• Mostly sunny and a bit cooler Friday, mostly clear Friday night,
• Partly cloudy and a bit cooler Saturday, mostly clear at night,
• Then mostly sunny Sunday and a bit cooler, mostly clear at night,
• Then sunny and a bit warmer Monday (Columbus Day),
• highs 68-63 warming to 67 Monday lows 50-48. (seasonal averages high 63 low 48)

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Forecast for the Cascades in Lane County:

• Partly cloudy this evening, clear late tonight,
• Mostly sunny and a bit warmer Tuesday and Wednesday, clear Tuesday night, mostly clear Wednesday night,
• Sunny and a bit warmer Thursday, then clear at night.
• free air freezing level 7,000 ft. tonight, 7,500 ft. rising to 9,000 ft. Tuesday, 9,000 ft. Tuesday night and Wednesday, 10,000 ft. Wednesday night, 10,000 ft. rising to 11,000 ft. Thursday, then 12,000 ft. Thursday night.
• lows 30-38 highs 50-59.
• Sunny and a bit warmer Friday, clear Friday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers Saturday and at night,
• Mostly sunny Sunday, clear Sunday night,
• Then sunny and a bit warmer Monday (Columbus Day).
• free air freezing level 14,000 ft. Friday and Friday night, snow level above 8,000 ft. Saturday and Saturday night, free air freezing level 14,000 ft. Sunday, then 15,000 ft. Sunday night and Monday.
• highs 62-55 warming to 57 Sunday and Monday lows 39-36.

 

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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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