Here is my 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) moved away as an Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) starts to move toward us warming temperatures back to normal. Another Upper level Low Pressure Trough will approach the Pacific Coast late in the week into the weekend helping to change our weather again. The graphics for days 3-7 show a cold front moving from the northwest at us Saturday and another nearing the coast next Wednesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 21 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 5 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

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Advisories:

• A FROST ADVISORY IS IN EFFECT FROM 1 AM UNTIL 9 AM THURSDAY FOR EASTERN CURRY COUNTY,  JOSEPHINE COUNTY, AND JACKSON COUNTY.
• A Health Advisory remains in effect for the Link and Klamath rivers to Keno Dam. 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.
• 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 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 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 84, 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,
• Patchy AM fog, sunny and a bit warmer Thursday, clear Thursday night,
• Mostly sunny and a bit warmer Friday, partly cloudy at night,
• A mix of clouds and sun and a bit cooler with a slight (20%) of chance of showers Saturday, partly cloudy and a bit cooler with a slight (20%) chance of showers Saturday night.
• lows 38-45 cooling to 43 Saturday night highs 73-67.
• Partly cloudy and a bit cooler with a slight (20%) chance of showers Sunday, just partly cloudy Sunday night,
• Mostly sunny and a bit warmer Monday (Columbus Day) and Tuesday, mostly clear both nights,
• Then sunny Monday.
• highs 63-72 lows 40-42. (seasonal averages high 70 low 43)

 

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Forecast for Roseburg:

• Clear tonight,
• Sunny and a bit warmer Thursday and Friday, clear both nights,
• Partly cloudy and a bit cooler Saturday, then just mostly clear at night.
• lows 44-47 cooling back to 44 Saturday night highs 76-78 cooling to 68 Saturday.
• Mostly sunny and a bit cooler Sunday, mostly clear Sunday night,
• Mostly sunny and a bit warmer Monday (Columbus Day), mostly clear at night,
• Then sunny Tuesday and Wednesday, clear Tuesday night.
• highs 68-72 cooling back to 68 Wednesday lows 44-42 warming back to 44 Tuesday night. (seasonal averages high 73 low 48)

 

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

• Clear tonight,
• Sunny and a bit cooler Thursday, clear at night,
• Mostly sunny and a bit cooler Friday, mostly clear at night,
• Partly cloudy and a bit cooler Saturday, then mostly clear Saturday night.
• lows 46-50 cooling to 48 Saturday night highs 69-64.
• Mostly sunny Sunday, mostly clear at night,
• Mostly sunny and a bit warmer Monday (Columbus Day), clear Monday night,
• Sunny Tuesday, mostly clear at night,
• Then sunny and a bit cooler Wednesday.
• highs 64-67 cooling to 62 Wednesday lows 43-47. (seasonal averages high 63 low 48)

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Forecast for the Cascades in Lane County:

• Clear tonight,
• Sunny and a bit warmer Thursday and Friday, clear both nights,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Saturday, partly cloudy with a slight (20%) chance of showers Saturday night.
• free air freezing level 9,000 ft. tonight, 10,000 ft. Thursday, 12,000 ft. rising to 13,000 ft. Thursday night, 14,000 ft. Friday and Friday night, snow level above 8,000 ft. Saturday and Saturday night.
• lows 34-36 cooling to 32 Saturday night highs 59-62 cooling to 52 Saturday.
• Partly cloudy and a bit cooler Sunday and Sunday night,
• Mostly sunny and a bit warmer Monday (Columbus Day) and Tuesday, mostly clear both nights,
• Then sunny and a bit warmer Wednesday.
• free air freezing level 12,00 ft. Sunday and Sunday night, 14,000 ft. Monday through Tuesday night,
• Then sunny Wednesday.
• highs 50-59 lows 32-34.

 

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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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