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 Low Pressure Trough (Shaded “U” shape with blue arrows) returned shower chances that will continue through Friday. The graphics for days 1-3 show no frontal systems in the area, but rain caused by the upper low. The graphics for days 3-7 show complex frontal systems approaching Tuesday and another frontal system taking shape next Wednesday and Thursday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 12 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 FROM NOON THURSDAY UNTIL 11 PM FRIDAY ABOVE 3,500 FT. FOR THE SOUTHERN BLUE MOUNTAINS OF OREGON.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 3 PM THURSDAY UNTIL 8 AM FRIDAY ABOVE 4,500 FT. FOR THE SOUTH CENTRAL OREGON CASCADES.
• A FREEZE WARNING IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL 9 AM THURSDAY FOR THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON AND NORTH CENTRAL OREGON.
• A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 9 AM THURSDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
• 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:

October 14th:

Ducks vs Stanford, at Stanford Stadium – Kickoff: 8:00 PM PDT – Clear 60, cooling as the game progresses.

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.

 

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

• Partly cloudy with a good (50%) chance of showers and a slight (20%) chance of thunderstorms this evening, a slight (20%) chance of showers late tonight (0.10 in. of rain, more in storms),
• Mostly cloudy with AM showers, showers and a bit cooler with a slight (20%) chance of thunderstorms Thursday afternoon and evening, showers late Thursday night, (0.25 in. of rain possible, more in storms),
• A mix of clouds and sun with good (50%) chance of AM showers, showers Friday afternoon, partly cloudy with a (30%) chance of evening showers, partly cloudy with patchy fog late Friday night,
• Patchy AM fog, partly cloudy and a bit warmer Saturday, then partly cloudy with patchy fog late at night.
• lows 42-44 cooling to 35 Friday night and Saturday night highs 54-59.
• A mix of clouds and sun with patchy fog Sunday AM, mostly sunny and a bit warmer in the afternoon, mostly cloudy with a (30%) chance of evening showers, mostly clear with patchy fog late Sunday night,
• Partly cloudy with patchy AM fog, mostly sunny and a bit warmer Monday afternoon, partly cloudy with a slight (20%) chance of rain at night,
• Mostly cloudy and a bit cooler with a good (50%) chance of rain Tuesday and Tuesday night,
• Then mostly cloudy with rain likely (70%) Wednesday.
• highs 62-65 cooling back to 62 Wednesday lows 39-45. (seasonal averages high 67 low 42)

 

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Forecast for Roseburg:

• Mostly cloudy with a (30%) chance of showers and isolated thunderstorms this evening, isolated showers late tonight,
• Mostly cloudy with AM showers likely (70%), showers and a bit warmer Thursday afternoon and at night,
• Mostly cloudy and a bit warmer with showers likely (70%) Friday, a (30%) chance of evening showers, just partly cloudy late Friday night,
• Mostly sunny and a bit warmer Saturday, then mostly clear at night.
• lows 38-45 cooling back to 38 Friday night and Saturday night highs 53-62.
• Mostly sunny and a bit warmer Sunday and Monday, mostly clear both nights,
• Mostly cloudy and a bit cooler with a (30%) chance of rain Tuesday and at night,
• A good (50%) chance of AM rain, then a bit cooler with a (40%) chance of showers Wednesday afternoon.
• highs 68-70 cooling to 60 Wednesday lows 42-46. (seasonal averages high 69 low 46)

 

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

• Mostly cloudy with a (40%) chance of scattered showers and isolated thunderstorms this evening, a (40%) chance of showers late tonight,
• Mostly cloudy with coastal showers Thursday while inland AM showers likely (70%) and inland showers in the afternoon, showers at night,
• Mostly cloudy and a bit cooler with showers likely (70%) Friday, a slight (20%) chance of evening showers, partly cloudy at the shore late Friday night while mostly clear inland late at night,
• Mostly sunny and a bit warmer Saturday, then mostly clear Saturday night.
• lows 47-42 warming to 44 Saturday night highs 56-59.
• Mostly sunny and a bit warmer Sunday and Monday, mostly clear both nights,
• Mostly cloudy and a bit cooler with a (40%) chance of rain Tuesday and Tuesday night,
• Rain likely (70%) Wednesday AM, then showers likely (70%) Wednesday afternoon.
• highs 62-58 lows 47-50. (seasonal averages high 62 low 47)

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Forecast for the Cascades in Lane County:

• Mostly cloudy with rain and snow showers this evening, a (40%) chance of rain and snow showers late tonight (0.10 in. of rain possible, 1-4 in. of snow possible),
• Mostly cloudy and a bit warmer with rain and snow showers Thursday (0.50 in. of rain possible, 3-7 in. of snow possible), rain and snow showers at night (0.75 in. of rain possible, 5-9 in. of snow possible),
• Rain and snow showers and a bit cooler Friday, evening rain and snow showers likely (70%), partly cloudy a slight (20%) chance of rain and snow showers and colder late Friday night,
• Then partly cloudy and a bit warmer Saturday, then mostly clear Saturday night.
• snow level 4,500 ft. falling to 4,000 ft. late tonight, 4,500 ft. rising to 5,000 ft. Thursday afternoon, 5,000 ft. falling to 4,500 ft. late Thursday night, 4,500 ft. Friday, 4,500 ft. falling to 3,500 ft. late Friday night, free air freezing level 4,500 ft. rising to 8,000 ft. Saturday, then 9,000 ft. Saturday night.
• lows 25-30 cooling to 20 Friday night warming to 30 Saturday night highs 36-34 rising to 42 Saturday.
• Mostly sunny and a bit warmer Sunday and Monday, mostly clear both nights,
• A mix of clouds and sun and a bit cooler with a good (50%) chance of rain Tuesday, then mostly cloudy a good (50%) chance of rain Tuesday night and Wednesday.
• free air freezing level 10,000 ft. Sunday , 11,000 ft. Sunday night, 11,000 ft. Monday and Monday night, snow level 8,000 ft. Tuesday and Tuesday night, then 7,500 ft. Wednesday.
• highs 52-46 lows 33-35 cooling back to 33 Tuesday night.

 

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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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