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 today. The graphic for days 3-7 more frontal systems will march toward us on Saturday and late Sunday into Monday. 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 26 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 59 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 63 in the Moderate 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: GREEN – Burning is allowed.

*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 UNTIL 6 PM TODAY FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL NOON TODAY FOR THE SOUTH CENTRAL OREGON CASCADES.
• A FREEZE WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY AND JACKSON COUNTY
• 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:

• Mostly cloudy with showers, peeks of sun and small hail possible this afternoon (0.25 in. of rain possible), a good (50%) chance of showers tonight (0.10 in. of rain possible),
• A slight (20%) chance of showers and a bit cooler Thursday, mostly cloudy with a slight (20%) chance of rain late with patchy fog at night,
• Areas of AM fog with a good (50%) chance of rain Friday, evening rain likely (70%), then cloudy with a good (50%) chance of rain Friday night.
• highs 50-47 lows 37-35 warming to 45 Friday night.
• Mostly cloudy with a (40%) chance of rain and a bit warmer Saturday and in the evening, rain likely (70%) Saturday night,
• Rain Sunday, showers Sunday night,
• Cloudy and much cooler with showers likely (70%) Monday, evening showers, mostly cloudy with a good (50%) chance of rain and snow showers at night,
• Then a mix of clouds and sun and a bit cooler with a (30%) chance of rain and snow showers Tuesday.
• highs 50-39 lows 45-34. (seasonal averages high 48 low 35)

 

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Forecast for Roseburg:

• Mostly cloudy with showers this AM, showers likely (70%) and a bit cooler this afternoon (under 0.10 in. of rain possible, snow level 3,000 ft.), evening rain and snow showers likely (70%), a slight (20%) chance of showers with patchy fog late tonight (under 0.10 in. of rain possible, snow level 3,000 ft.),
• Mostly cloudy with patchy fog and a slight (20%) chance of showers Thursday AM, just mostly cloudy and a bit cooler in the afternoon and evening, just partly cloudy with patchy fog late Thursday night,
• Areas of AM fog,  mostly cloudy and a bit cooler Friday, then cloudy with a slight (20%) chance of rain at night and patchy fog late.
• highs 52-48 lows 38-36 warming to 42 Friday night.
• Areas of AM fog, mostly cloudy with a (30%) chance of rain and a bit warmer Saturday, a (40%) chance of rain Saturday night,
• Mostly cloudy and a bit cooler with rain likely (70%) Sunday, rain and snow showers likely (70%) and a bit cooler at night and Monday, cloudy with a good (50%) chance of rain and snow showers Monday night,
• Then mostly cloudy and a bit cooler with a (40%) chance of rain and snow showers Tuesday.
• highs 52-40 lows 44-36. (seasonal averages high 49 low 38)

 

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

• Mostly cloudy with AM showers, showers likely (70%) and a bit cooler this afternoon (0.10 in. of rain possible), a slight (20%) chance of coastal showers tonight while inland evening showers likely (60%) and a slight (20%) chance of showers tonight with patchy fog late (under 0.10 in. of rain possible),
• A slight (20%) chance of  showers with patchy inland fog Thursday AM (under 0.10 in. of rain possible), mostly cloudy in the afternoon and evening,  just partly cloudy with patchy coastal fog late Thursday night,
• Areas of AM fog, mostly cloudy and a bit warmer with a slight (20%) chance of coastal rain Friday afternoon, then a (30%) chance of rain with areas of fog Friday night.
• highs near 54 lows 42-40 warming to 43 Friday night.
• Areas of AM fog, mostly cloudy and a bit warmer Saturday with a (30%) chance of rain, cloudy with a good (50%) chance of rain Saturday night with fog late,
• Mostly cloudy with rain likely (70%) and a bit cooler Sunday, showers likely (70%) Sunday night and Monday (a bit cooler), then mostly cloudy with a (40%) chance of rain and snow showers and a bit cooler Monday night and Tuesday.
• highs 55-46 lows 46-39. (seasonal averages high 52 low 41)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with rain and snow showers and a bit cooler today (0.25 in. of rain possible, 2-5 in. of snow possible, small hail possible), evening rain and snow showers likely (70%), a good (50%) chance of rain and snow showers late tonight (0.25 in of rain possible, 1-3 in. of snow possible),
• Mostly cloudy with a (40%) chance of snow showers and a bit warmer Thursday, a slight (20%) chance of evening snow, just partly cloudy and colder late at night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of AM rain and snow, a (40%) chance of snow and rain Friday, becoming cloudy with a good (50%) chance of snow and a slight (20%) chance of rain Friday night.
• snow level 3,000 ft. today and tonight, 2,500 ft. Thursday, 3,000 ft. Thursday night, 3,500 ft. Friday, then 5,500 ft. Friday night.
• highs 32-38 lows 24-20 warming to 33 Friday night.
• A good (50%) chance of rain and snow  and a bit cooler Saturday, rain and snow likely (70%) at night,
• Rain and snow and a bit warmer Sunday, snow showers at night and colder Monday, cloudy with a good (50%) chance of snow showers at night,
• Then mostly cloudy and a bit cooler with a good (50%) chance of snow showers Tuesday.
• snow level 5,000 ft. Saturday and Saturday night, 4,000 ft. Sunday, then at the surface Sunday night through Tuesday.
• highs 36-38 cooling to 22 Tuesday lows 33-17.

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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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