Apr
20.
An Upper Level Low Pressure Trough (“U” shape) helps a frontal system push into and through the Pacific Northwest. The graphics for days 1-3 show a frontal system moving onshore between today and Tuesday. The graphics for days 3-7 Thursday through Monday show a frontal activity trying to back into the Pacific Northwest from the Northeast.
ADVISORIES:
- NONE AT THIS TIME.
HEALTH ADVISORIES:
- 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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SKI REPORT:
Willamette Pass Ski: Is closed until better snow conditions for Spring skiing.
Hoodoo Ski: Is closed until better snow conditions for Spring skiing.
Mt. Ashland Ski: IS CLOSED FOR THE SEASON.
Be sure to check their web pages for the latest updates.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 23 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 14 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 23 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Mostly cloudy with showers tonight (0.25 in. of rain possible),
- Mostly cloudy and cooler with showers Tuesday (under 0.10 in. of rain possible), evening rain likely (70%), a (40% ) chance of rain late Tuesday night (under 0.10 in. of rain possible),
- Mostly cloudy with AM rain likely (70%), showers and a bit cooler Wednesday afternoon (0.10 in. of rain possible), evening showers likely (70%), just mostly cloudy late at night,
- Mostly cloudy start, sunny and a bit warmer Thursday afternoon, then mostly clear Thursday night.
- lows 48-40 highs 59-56 warming to 63 Thursday.
- Sunny and warmer Friday, clear Friday night,
- Sunny and a bit warmer Saturday, mostly clear at night,
- Mostly sunny and a bit cooler Sunday, partly cloudy Sunday night,
- Then mostly sunny and a bit cooler with slight (20%) chance of rain Monday.
- highs 63-72 cooling to 69 Sunday lows 40-44. (seasonal averages high 62 low 41).
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EUGENE-SPRINGFIELD POLLEN COUNT:`
GRASS POLLEN: ABSENT (0)
TREE POLLEN: HIGH (227)
WEEDS: ABSENT (0)
Wednesday 4.20.26
NOTE: DATA FROM OREGON ALLERGY ASSOCIATES.
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Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with rain tonight (o.25 in. of rain possible),
- Mostly cloudy with AM rain and thunderstorms likely (70%), showers and possible thunderstorms and cooler Tuesday afternoon (under o.10 in. of rain possible, more in storms), evening rain likely (70%), a good (50%) chance of rain late Tuesday night (o.25 in. of rain possible),
- Mostly cloudy and cooler with rain Wednesday (under 0.10 in. of rain possible), a good (50%) chance of evening rain, just mostly cloudy late at night,
- Mostly sunny and a bit warmer Thursday, mostly clear Thursday night.
- lows 48-44 highs 59-57 warming to 65 Thursday.
- Sunny and a bit warmer Friday, clear Friday night,
- Sunny and a bit warmer Saturday, mostly clear at night,
- Sunny and a bit cooler Sunday, partly cloudy Sunday night,
- Then mostly sunny and a bit warmer with a slight (20%) chance of rain Monday
- highs 72-74 cooling to 70 Monday lows 43-42 warming to 44 Friday night. (seasonal averages high 65 low 43).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with rain tonight (under 0.10 in. of rain possible),
- Mostly cloudy with AM rain, showers likely (70%) and a bit cooler with a (30%) chance of thunderstorms Tuesday afternoon (0.25 in. of rain possible), mostly cloudy with a good (50%) chance of rain Tuesday night,
- Mostly cloudy and a bit warmer with rain likely (70%) Wednesday (under 0.10 in. of rain ), mostly cloudy with a (40%) chance of rain Wednesday night,
- A slight (20%) chance of AM rain, mostly sunny and a bit warmer Thursday afternoon, mostly clear Thursday night.
- lows 49-45 highs 58-54.
- Sunny and a bit warmer Friday, mostly clear Friday night,
- Sunny and a bit cooler Saturday, partly cloudy at night,
- Mostly sunny and a bit cooler Sunday, partly cloudy Sunday night,
- The a mix of clouds and sun Monday.
- highs 62-59 lows 48-49 cooling back to 48 Sunday night. (seasonal averages high 57 low 45).
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with evening showers and a slight (20%) chance of thunderstorms, showers late tonight (0.25 in. of rain possible, more in storms),
- Mostly cloudy with AM showers likely (70%), a bit cooler with rain and a slight (20%) chance of thunderstorms Tuesday afternoon (0.25 in. of rain p0ssible, more in storms), rain with a slight (20%) chance of evening snow, snow late Tuesday night,
- Mostly cloudy with AM rain and snow, a bit cooler with rain and snow showers Wednesday afternoon, cloudy with a good (50%) chance of rain and snow showers at night,
- Mostly sunny with a (40%) chance of snow showers and a slight (20%) chance of rain showers and warmer Thursday, then mostly clear Thursday night.
- snow level 6,500 ft. tonight, 5,500 ft. Tuesday, 5,000 ft. Tuesday night, 4,000 ft. Wednesday, 4,500 ft. Wednesday night, 5,000 ft. Thursday, then free air freezing level 9,000 ft. Thursday night.
- lows 39-30 warming to 32 Thursday night highs 45-38 warming to 52 Thursday.
- Sunny and a bit warmer Friday, clear Friday night,
- Sunny and a bit cooler Saturday, mostly clear at night,
- Mostly sunny and a bit cooler with a slight (20%) chance of rain Sunday,
- Then partly cloudy with a slight (20%) chance of rain Monday.
- free air freezing level 9,000 ft. Friday through Saturday night, snow level 5,500 ft. Sunday, then 6,000 ft. Sunday night and Monday.
- highs 58-55 lows 33-35.
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