Check out my latest Eugene Daily News Weather Or Not column:
http://eugenedailynews.com/2018/01/like-river-avalanche-can-deadly/
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Here is my weekly weather quiz question for the last time. What are “Crepuscular Rays?” Here is the correct answer. Crepuscular Rays are the alternating bands of light and dark (rays and shadows) seen at the earth’s surface when the sun shines through clouds. I’ll have a new weekly weather quiz question for you starting Monday. 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) is continuing to bring the wet weather. The graphics for days 1-3 show a warm front moving through the Pacific Northwest and the cold front that will follow it by Monday. The graphics for days 3-7 show surface high pressure trying to keep the next frontal systems away from us.
Note: Mt. Ashland opened for skiing with regular hours through Monday. Check their webpage for details. Hoodoo reports they were open today from 9 AM until 9 PM. Willamette Pass still doesn’t have enough snow to open.
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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 8 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 4 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Home Wood Heating Advisory:
(Posted Daily)
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 WIND ADVISORY IS IN EFFECT FROM 10 PM MONDAY UNTIL 7 AM TUESDAY FOR CENTRAL AND EASTERN LAKE COUNTY.
- A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER 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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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Partly cloudy this evening, mostly cloudy with patchy fog late tonight and Monday AM, mostly cloudy and a bit cooler with a good (50%) chance of rain in the afternoon (0.25 in. of rain possible), increasing clouds to mostly cloudy with rain Monday night (0.50 in. of rain possible),
- Mostly cloudy with AM showers likely (70%) Tuesday , a good (50%) chance of showers and a bit cooler in the afternoon (0.25 in. of rain possible), a (40%) chance of showers at night (under 0.10 in. of rain possible),
- A mix of clouds and sun with a slight (20%) chance of showers Wednesday, then mostly cloudy with a slight (20%) chance of showers Wednesday night.
- lows 42-35 highs 57-50.
- Mostly cloudy with a slight (20%) chance of rain Thursday and Thursday night,
- A bit warmer with a (30%) chance of rain Friday, a (30%) chance of showers at night,
- Mostly cloudy and a bit warmer with a slight (20%) chance of showers Saturday, just mostly cloudy Saturday night,
- Then a mix of clouds and sun Sunday.
- highs 50-55 lows near 40. (seasonal averages high 49 low 35)
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Forecast for Roseburg:
- Partly cloudy this evening, mostly cloudy with patchy fog late tonight and Monday AM, mostly cloudy and a bit cooler with a slight (20%) chance of rain the afternoon, evening rain, showers late Monday night (0.25 in. of rain possible),
- Mostly cloudy with a (40%) chance of showers and a bit cooler Tuesday (under 0.10 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft. in the afternoon), a slight (20%) chance of showers with patchy fog late at night (snow level 3,000 ft.),
- Mostly cloudy with patchy AM and late night fog and a slight (20%) chance of showers Wednesday, then just mostly cloudy in the afternoon and Wednesday night.
- lows 44-37 highs 60-52.
- Mostly cloudy with patchy fog Thursday AM, a bit warmer with a slight (20%) chance of showers Thursday afternoon and at night with patchy fog again late,
- Patchy AM and late night fog, mostly cloudy and a bit warmer with a slight (20%) chance of showers Friday and Friday night,
- Patchy AM fog, then just mostly cloudy Sunday.
- highs 54-58 lows 42-44. (seasonal averages high 51 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with patchy fog late tonight and Monday AM, a bit warmer with a slight (20%) chance of rain in the afternoon (under 0.10 in. of rain possible), evening rain, showers late Monday night (0.50 in. of rain possible),
- Mostly cloudy and a bit cooler with a (30%) chance of showers Tuesday (under 0.10 in. of rain possible), a slight (20%) chance of showers at night with patchy fog late,
- Patchy AM fog and a slight (20%) chance of showers, just mostly cloudy Wednesday afternoon and Wednesday night with patchy fog again late.
- lows 47-40 highs 60-53.
- Patchy AM and late night fog, mostly cloudy and a bit warmer with a slight (20%) chance of showers Thursday and Thursday night,
- Patchy AM and late night fog, mostly cloudy and a bit warmer with a slight (20%) chance of showers Friday and at night,
- Patchy AM fog, a slight (20%) chance of showers Saturday, mostly cloudy with patchy fog late at night and Sunday AM, then just mostly cloudy Sunday afternoon.
- highs 56-58 lows 44-47. (seasonal averages high 52 low 40)
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Forecast for the Cascades in Lane County:
- Partly cloudy tonight,
- Mostly cloudy and a bit cooler Monday, evening rain, rain and snow showers and colder late at night (0.50 in. of rain possible, 1-3 in. of snow possible),
- Mostly cloudy with rain and snow showers likely (70%) and colder Tuesday, a good (50%) chance of rain and snow showers Tuesday night (1 in. of snow possible),
- A mix of clouds and sun with a slight (20%) chance of snow showers Wednesday, then just mostly cloudy at night.
- free air freezing level 10,000 ft. late tonight, 10,000 ft. falling to 9,000 ft. Monday afternoon, snow level 5,500 ft. Monday night, 3,500 ft. Tuesday, 3,000 ft. Tuesday night, 2,500 ft. Wednesday, then free air freezing level 4,000 ft. Wednesday night.
- lows 33-23 warming to 26 Wednesday night highs 47-34.
- A mix of clouds and sun and a bit warmer with a slight (20%) chance of rain and snow Thursday, mostly cloudy with a (30%) chance of rain at night,
- Mostly cloudy and a bit warmer with a slight (20%) chance of rain and a bit warmer Friday, a (30%) chance of showers Friday night,
- A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Saturday, then partly cloudy with a slight (20%) chance of showers Saturday night and Sunday.
- snow level 4,000 ft. Thursday, 6,500 ft. Thursday night, 7,000 ft. Friday, 7,500 ft. Friday night, 7,000 ft. Saturday and Saturday night, then 6,500 ft. Sunday.
- highs 42-45 lows near 33.
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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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