Here is my new weekly weather quiz question. What is “Alluvium?”  Please remember to post your answer at the bottom of this page. An email will not suffice. The first person to post the correct answer 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 area with blue arrows) is sending more storms our way.  The Days 1,2 & 3 graphic shows the frontal system will move through the Pacific Northwest Wednesday. The graphic for days 3-7 more frontal systems will march toward us on Friday and late Sunday. There will be continued snow on the Cascade Passes but snow levels will continue to rise and fall. So far Willamette Pass and Hoodoo ski areas are not open. I’d say they need two good snow storms to produce the approximately 30 inches of snow they need to open. Drive carefully! If you need to travel the passes remember to be prepared to chain-up if necessary.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 7 in the Good category measuring Particulate Matter.

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

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Home Wood Heating Advisory:

Eugene-Springfield: GREEN – Burning is allowed.

Oakridge: Yellow – YELLOW – Caution is advised.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

• A WINTER WEATHER ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL NOON WEDNESDAY ABOVE 4,500 FT. FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL NOON WEDNESDAY FOR THE SOUTH CENTRAL OREGON CASCADES
• A Permanent Health Advisory remains 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.
• A Blue-Green Algae Health Advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.

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

• A mix of clouds and sun and a bit cooler this afternoon, partly cloudy with a slight (20%) chance of evening rain, becoming mostly cloudy with rain late tonight (0.25 in. of rain possible),
• Mostly cloudy with showers likely (70%) Wednesday (0.10 in. of rain possible), a  good (50%) chance of evening showers, a slight (20%) chance of showers late Wednesday night (0.10 in. of rain possible) and Thursday and a bit cooler Thursday afternoon, then just mostly cloudy with patchy fog at night.
• highs 52-49 lows 43-35.
• Areas of AM fog, mostly cloudy with a (40%) chance of rain Friday afternoon, cloudy with a good (50%) chance of rain Friday night,
• Cloudy with a (40%) chance of rain and a bit warmer Saturday, a good (50%) chance of rain at night,
• Mostly cloudy and a bit cooler with rain likely (70%) Sunday, then cloudy with a good (50%) chance of showers Sunday night and Monday (a bit cooler).
• highs 50-43 lows 46-37. (seasonal averages high 48 low 36)

 

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Forecast for Roseburg:

• Mostly cloudy this afternoon, a slight (20%) chance of rain this evening, rain late tonight (0.10 in. of rain possible),
• Mostly cloudy with AM rain likely (70%), a good (50%) chance of showers Wednesday afternoon (under 0.10 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft. in the afternoon), mostly cloudy with a (20%) chance of showers Wednesday night (under 0.10 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft. late at night),
• Mostly cloudy with a slight (20%) chance of showers Thursday AM, just mostly cloudy and a bit cooler Thursday afternoon, then just mostly cloudy with patchy fog late at night.
• highs 50-48 lows 42-36.
• Areas of AM fog,  mostly cloudy with a (30%) chance of rain Friday (a bit cooler Friday, a bit warmer Saturday) through Sunday, rain and snow showers likely (70%) Sunday night,
• Then mostly cloudy and a bit cooler with a good (50%) chance of rain and snow showers Monday.
• highs 47-52 cooling to 46 Monday lows 42-44 cooling back to 42 Sunday night. (seasonal averages high 49 low 38)

 

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

• Partly cloudy this afternoon, increasing clouds with a (30%) chance of evening rain, becoming mostly cloudy with rain late tonight (0.25 in. of rain possible),
• Mostly cloudy with AM rain likely (70%), a good (50%) chance of showers Wednesday afternoon (0.10 in. of rain possible), mostly cloudy with a (20%) chance of showers at night and Thursday AM, then just mostly cloudy with patchy fog Thursday night.
• highs near 55 lows 45-40.
• Areas of AM fog, mostly cloudy and a bit cooler with a (40%) chance of rain Friday afternoon, a slight (20%) chance of rain with areas of fog Friday night,
• Areas of AM fog, mostly cloudy and a bit warmer Saturday with a (30%) chance of rain, a (40%) chance of rain Saturday night and Sunday, showers likely (70%) Sunday night (a bit warmer Sunday),
• Then mostly cloudy and a bit cooler with a good (50%) chance of showers Monday.
• highs 52-55 cooling to 50 Monday lows 45-47 cooling to 44 Sunday night. (seasonal averages high 52 low 41)

 

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Forecast for the Cascades in Lane County:

• A mix of clouds and sun slight (20%) chance of rain and snow showers through early this afternoon and a bit warmer, becoming mostly cloudy with rain and snow late tonight (0.25 in. of rain possible, 1-4 in. of snow possible),
• Mostly cloudy with rain and snow showers and a bit cooler Wednesday (0.25 in. of rain possible, 1-4 in. of snow possible), mostly cloudy with evening rain and snow showers likely (70%), a good (50%) chance of rain and snow showers Wednesday night,
• Mostly cloudy with a (30%) chance of AM rain and snow showers, a slight (20%) chance of rain and snow showers and a bit warmer Thursday afternoon and evening, then just partly cloudy at night.
• snow level 3,500 ft. today, 4,500 ft. tonight, 3,500 ft. Wednesday, then 3,000 ft.  Thursday and Thursday night.
• highs 35-33 warming back to 35 Thursday lows 27-23.
• A mix of clouds and sun and a bit warmer with a (40%) chance of rain and snow Friday, becoming cloudy with rain and snow likely (70%) Friday night,
• A (40%) chance of rain and snow Saturday and a bit warmer, a good (50%) chance of rain and snow Saturday night,
• Mostly cloudy and a bit cooler with rain and snow likely (70%) Sunday, snow showers at night,
• Then snow showers likely (70%) and colder Monday.
• snow level 4,000 ft. Friday, 6,000 ft. Friday night, 5,500 ft. Saturday through Sunday, 4,000 ft. Sunday night, then at the surface Monday.
• highs 38-26 lows 33-22.

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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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