Apr
11.
Here is my weekly weather quiz question. “What is a “Radiosonde?”
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An Upper Lever High Pressure Ridge brings the Pacific Northwest sunshine. The graphics for days 1-3 show the next frontal system moving through Pacific Northwest this evening and tonight. The graphics for days 3-7 Sunday through Thursday show a frontal system moving over the Pacific Northwest between Sunday and Monday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 12 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 7 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
- A FLOOD WARNING IS IN EFFECT UNTIL WEDNESDAY APRIL 17TH FOR THE OWYHEE RIVER BELOW THE OWYHEE DAM AFFECTING MALHEUR COUNTY.
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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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Cloudy with a good (50%) chance of rain tonight (under 0.10 in. of rain possible),
- Mostly cloudy and a bit cooler a good (50%) chance of showers Friday (under 0.10 in. of rain possible), a good (50%) chance of evening showers, a slight (20%) chance of showers late Friday night (0.10 in. of rain possible),
- Clouds and sun with a slight (20%) chance of AM showers, a mix of clouds and sun and a bit warmer with a good (50%) chance of showers Saturday afternoon (under 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of showers at night (0.10 in. of rain possible),
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Sunday, then mostly cloudy with a slight (20%) chance of showers late Sunday night.
- lows 45-42 highs 62-63 cooling back to 62 Sunday.
- Mostly cloudy with a good (50%) chance of AM showers, a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Monday afternoon, mostly cloudy with a good (50%) chance of showers Monday night,
- A mix of clouds and sun and a bit cooler with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Tuesday, partly cloudy in the evening, mostly clear late at night,
- Then sunny and a bit warmer Wednesday and Thursday, mostly clear Wednesday night.
- highs 56-64 lows near 36. (seasonal averages high 60 low 40)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: HIGH (149)
WEEDS: ABSENT (0)
Measured 4.11.24
Data courtesy of Oregon Allergy Associates.
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Home Wood Heating Advisory:
Eugene-Springfield: GREEN- Burning wood in wood stoves or fireplaces is allowed.
Oakridge: GREEN- Burning wood in wood stoves or fireplaces is allowed.
*Pellet stoves can be used anytime since they don’t produce the particulate smoke.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with a (30%) chance of late evening showers continuing overnight with patchy fog late tonight,
- Mostly cloudy with patchy AM fog and a (30%) chance of showers, a bit cooler with a (30%) chance of showers and a slight (20%) chance of thunderstorms Friday afternoon and evening (0.10 in. of rain possible), a slight (20%) chance of showers late Friday night (0.10 in. of rain possible),
- Mostly cloudy with a slight (20%) chance of AM showers, a bit cooler with a (30%) chance of showers and a slight (20%) chance of thunderstorms Saturday afternoon (0.10 in. of rain possible), evening showers likely (70%) with a slight (20%) chance of thunderstorms, a good (50%) chance of showers late at night (0.10 in. of rain possible),
- Mostly cloudy with a (30%) chance of showers and a bit cooler Sunday, then a slight (20%) chance of showers Sunday night.
- lows 46-48 cooling to 43 Saturday night highs 65-60.
- Mostly cloudy with a (20%) chance of showers and a bit cooler Monday, partly cloudy with a slight (20%) chance of evening showers, a slight (20%) chance of rain and snow showers late Monday night,
- Mostly cloudy with a slight (20%) chance of AM rain and snow showers, a bit cooler with a (30%) chance of showers and a slight (20%) chance of thunderstorms Tuesday afternoon, partly cloudy with a slight (20%) chance of evening showers, becoming mostly clear late at night,
- Then mostly sunny and a bit warmer Wednesday and Thursday, mostly clear Wednesday night.
- highs 57-55 warming to 65 Thursday lows near 38. (seasonal averages high 62 low 42)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Cloudy with a slight (20%) chance of early evening coastal showers with coastal showers and patchy fog late tonight while cloudy with inland late evening showers likely (70%) continuing with patchy fog tonight (0.10 in. of rain possible),
- Cloudy with inland patchy AM fog, AM showers likely (70%), a good (50%) chance of showers and a bit warmer Friday afternoon (under 0.10 in. of rain possible), a (40%) chance of coastal showers at night while inland showers likely (70%) with a slight (20%) chance of thunderstorms, a (40%) chance of showers Friday night (0.25 in. of rain possible),
- Mostly cloudy with a (40%) chance of showers Saturday (under 0.10 in. of rain possible), a (40%) chance of showers at night (under 0.10 in. of rain possible),
- Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday and Sunday night.
- lows 45-44 highs 58-55.
- Mostly cloudy with a slight (20%) chance of showers and a bit cooler Monday, partly cloudy with a slight (20%) chance of showers late Monday night,
- Mostly cloudy with a slight (20%) chance of showers Tuesday, partly cloudy with a slight (20%) chance of evening showers, becoming mostly clear late at night,
- Then sunny and a bit warmer Wednesday and Thursday, mostly clear Wednesday night.
- highs 54-62 lows 40-38 warming back to 40 Wednesday night. (seasonal average high 56 low 43)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with a good (50%) chance of showers late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) and a bit cooler Friday afternoon, evening showers likely (70%), a good (50%) chance of showers Friday night (under 0.10 in. of rain possible),
- A mix of clouds and sun with a good (50%) chance of AM showers, showers with a slight (20%) chance of thunderstorms and a bit cooler Saturday afternoon, mostly cloudy with evening showers likely (70%) and a slight (20%) chance of thunderstorms, showers likely (70%) late at night,
- Mostly cloudy with a good (50%) chance of AM rain and snow showers, partly cloudy and a bit cooler with a good (50%) chance of rain and snow showers Sunday afternoon, then mostly cloudy with a (40%) chance of rain and snow showers Sunday night.
- snow level 5,500 ft. tonight, 5,500 ft. rising to 7,000 ft. Friday afternoon, 7,000 ft. Friday night through Saturday night, 5,000 ft. Sunday, then 4,000 ft. Sunday night.
- lows 34-38 cooling to 30 Sunday night highs 52-43.
- A mix of clouds and sun with a good (50%) chance of snow and rain showers and a bit cooler Monday, mostly cloudy with a good (50%) chance of snow and rain showers Monday night,
- Mostly cloudy and a bit cooler with snow and rain showers likely (70%) Tuesday, mostly cloudy with a good (50%) chance of evening snow showers, partly cloudy with a good (50%) chance of snow showers late at night,
- Mostly sunny and a bit warmer with a (40%) chance of snow and rain showers Wednesday, partly cloudy with a slight (20%) chance of evening snow showers, becoming mostly clear with a slight (20%) chance of snow showers late Wednesday night,
- Then sunny and a bit warmer with a slight (20%) chance of rain and snow showers Thursday.
- snow level 3,000 ft. Monday, 2,500 ft. Monday night and Tuesday, 3,000 ft. Tuesday night, 3,500 ft. Wednesday and Wednesday night, then 4,000 ft. Thursday.
- highs 40-37 warming to 47 Sunday lows near 25.
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