Here is my weekly weather quiz question. What are “Capillary Waves?” 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 (Shaded “Arch” shape with blue arrows) is taking over bringing sunshine and slightly warmer temperatures. The graphics for days 3-7 show complex frontal systems approaching Wednesday and Thursday another frontal system taking shape next Saturday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 10 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 WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE SOUTHERN BLUE MOUNTAINS OF OREGON, OCHOCO, THE JOHN DAY HIGHLANDS, AND THE EAST SLOPES OF THE OREGON CASCADES.
• A Health Advisory remains in effect for the Link and Klamath from Keno Dam to J.C. Boyle Dam (downstream from Keno Dam). Water monitoring has confirmed the presence of blue-green algae and the toxins they produce. 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:

Saturday:

Ducks vs Stanford, at Stanford Stadium – Kickoff: 8:00 PM PDT – Clear 66, cooling as the game progresses, Wind N 5 mph.

Beavers vs Colorado, at Reser Stadium – Kickoff: 1:00 PM PDT – Partly cloudy 58, warming to 62 then starting to cool by the end of the game, Light wind.

 

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

• Partly cloudy with patchy fog late tonight and Saturday AM, partly cloudy and a bit warmer in the afternoon, clear Saturday night,
• Mostly sunny and a bit warmer Sunday, mostly clear with patchy fog late Sunday night and Monday AM, mostly sunny Monday afternoon, then partly cloudy at night.
• lows 35-44 highs 62-66.
• A mix of clouds and sun and a bit cooler with a good (50%) chance of rain Tuesday, mostly cloudy with a (40%) chance of rain Tuesday night,
• Mostly cloudy and a bit warmer with rain likely (70%) Wednesday, rain at night,
• Rain likely (70%) and a bit cooler Thursday and Thursday night,
• Then cloudy and a bit cooler with a good (50%) chance of showers Friday.
• highs 62-54 lows 47-43. (seasonal averages high 65 low 41)

 

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Forecast for Roseburg:

• Mostly cloudy with a sight (20%) chance of evening showers (under 0.10 in. of rain possible), partly cloudy with patchy fog and frost late tonight and Saturday AM, sunny and a bit warmer Saturday afternoon, clear at night,
• Sunny and a bit warmer Sunday and Monday, clear both nights.
• lows 36-45 highs 64-74.
• Partly cloudy and a bit cooler with a slight (20%) chance of rain Tuesday, partly cloudy Tuesday night,
• Mostly cloudy with a (40%) chance of rain and a bit cooler Wednesday, rain Wednesday night and Thursday, rain likely (70%) at night,
• Then showers likely (70%) Friday.
• highs 68-56 warming to 58 Friday lows 48-45. (seasonal averages high 68 low 45)

 

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

• Mostly cloudy this evening, mostly clear with patchy fog late tonight,
• Mostly cloudy with patchy AM coastal fog and sunny and a bit warmer in the afternoon while patchy inland fog Saturday AM and sunny and a bit warmer inland in the afternoon, clear Saturday night,
• Then sunny and a bit warmer Sunday and Monday, clear both nights,
• lows 42-47 highs 63-66.
• Partly cloudy and a bit cooler with a slight (20%) chance of rain Tuesday, partly cloudy Tuesday night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of rain Wednesday, rain and a bit cooler at night and Thursday, rain likely (70%) Thursday night,
• Then showers likely (60%) and a bit warmer Friday.
• highs 62-55 warming to 57 Friday lows 50-52 cooling back to 50 Wednesday night. (seasonal averages high 62 low 46)

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a (40%) chance of rain and snow showers this evening (under 0.10 in. of rain possible), partly cloudy and colder late tonight,
• Mostly sunny and a bit warmer Saturday, Sunday, and Monday, mostly clear each night,
• snow level 4,500 ft. this evening, free air freezing level 6,500 ft. rising to 9,000 ft. Saturday, 10,000 ft. rising to 11,000 ft. late Saturday night, 12,000 ft. Sunday, 13,000 ft. falling to 12,000 ft. Sunday night, then 12,000 ft. Monday and Monday night.
• lows 22-38 highs 45-57.
• Partly cloudy and a bit cooler with a slight (20%) chance of rain Tuesday and Tuesday night,
• Cloudy with a good (50%) chance of rain Wednesday, rain and a bit cooler Wednesday night and Thursday, rain and snow Thursday night,
• Then rain and snow showers likely (70%) and a bit cooler Friday.
• snow level above 8,000 ft. Tuesday, 8,000 ft. Tuesday night and Wednesday, above 8,000 ft. Wednesday night, 6,500 ft. Thursday, then 5,000 ft. Thursday night and Friday.
• highs 49-33 lows 36-29.

 

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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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