Mar
31.
Here is my weekly weather quiz question. “What is “Radiation Fog?” Here is the correct answer. Radiation Fog is a fog that forms when outgoing longwave radiation cools the near-surface air below its dew point temperature.
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An Upper Level High Pressure Ridge (“Arch” shape) will take over giving us sunshine for your Easter weekend. The graphics for days 1-3 show a frontal systems moving through the Pacific Northwest Tuesday. The graphics for days 3-7 Wednesday through Sunday show a frontal system moving through the Pacific Northwest next Sunday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 18 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 10 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 10 in 13 Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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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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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Mostly clear with patchy fog tonight,
- Patchy AM fog, sunny and a bit warmer Monday, mostly clear with patchy fog late Monday night,
- Patchy AM fog, sunny and a bit warmer Tuesday, becoming mostly cloudy with rain likely (70%) at night,
- Mostly cloudy and colder with showers likely (70%) Wednesday, then a good (50%) chance of showers Wednesday night.
- lows 38-43 cooling to 35 Wednesday night highs 67-72 cooling to 53 Wednesday.
- Mostly cloudy with a good (50%) chance of AM showers, partly cloudy with a good (50%) chance of showers and a bit cooler Thursday afternoon, mostly cloudy with a (40%) chance of evening showers, partly cloudy with a (40%) chance of showers late Thursday night,
- A mix of clouds and sun and a bit warmer with a good (50%) chance of showers Friday, mostly cloudy with a good (50%) chance of evening showers, partly cloudy with a good (50%) chance of showers late at night,
- A mix of clouds and sun with a good (50%) chance of AM rain, mostly cloudy with a good (50%) chance of Saturday afternoon, a good (50%) chance of rain Saturday night,
- Then a mix of clouds and sun and a bit warmer with a good (50%) chance of rain Saturday
- highs 52-57 lows 34-38. (seasonal averages high 59 low 39)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: HIGH (103)
WEEDS: ABSENT (0)
Measured 3.30.24
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 clear tonight,
- Sunny and a bit warmer Monday, clear Monday night,
- Sunny and a bit warmer Tuesday, partly cloudy with a (30%) chance of evening rain, mostly cloudy with a (30%) chance of rain late at night,
- Mostly cloudy and colder with rain likely (70%) Wednesday, evening rain and snow likely (70%), then a good (50%) chance of rain and snow late Wednesday night.
- lows 42-45cooling to 38 Wednesday night highs 70-73 cooling 50 52 Wednesday.
- Mostly cloudy with a good (50%) chance of AM rain and snow, rain and snow likely (70%) Thursday afternoon, a (40%) chance of rain and snow Thursday night,
- Mostly cloudy and a bit warmer with a (40%) chance of rain and snow Friday and at night,
- Mostly cloudy with a (30%) chance of AM rain and snow, a (40%) chance of rain and a bit warmer Saturday afternoon, a (40%) chance of evening rain, a (40%) chance of rain and snow late Saturday night,
- Mostly cloudy with a good (50%) chance of AM rain and snow, then a good (50%) chance of rain Sunday afternoon.
- highs 52-57 lows 36-40. (seasonal averages high 60 low 41)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy with patchy coastal fog late tonight while patchy inland fog late evening and tonight,
- Patchy AM clouds and patchy fog, sunny and slightly warmer Monday afternoon, mostly clear with patchy coastal fog late Monday night while patchy inland evening fog and areas of fog late Monday night,
- Partly cloudy with patchy AM fog, sunny and a bit cooler Tuesday afternoon, mostly cloudy with a good (50%) chance of evening rain, rain likely (70%) late Tuesday night (under 0.10 in. of rain possible),
- Mostly cloudy with AM rain likely (70%), and colder with a good (50%) chance of rain Wednesday afternoon, then colder with rain and snow likely (70%) Wednesday night.
- lows 44-45 cooling to 38 Wednesday night highs 62-52.
- Mostly cloudy with rain and snow likely (70%) Thursday, mostly cloudy with a (40%) chance of rain and snow Thursday night,
- Mostly cloudy and a bit warmer with a good (50%) chance of rain and snow Friday, a (30%) chance of rain at night,
- Mostly cloudy and a bit warmer with rain likely (70%) Saturday, rain likely (70%) Saturday night,
- Then mostly cloudy and a bit warmer with rain likely (70%) Sunday.
- highs 52-55 lows 38-40. (seasonal average high 56 low 43)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly clear tonight,
- Sunny and a bit warmer Monday, clear Monday night,
- Sunny and a bit warmer Tuesday, partly cloudy with a slight (20%) chance of evening rain, mostly cloudy with rain likely (70%) late at night,
- Mostly cloudy with rain and snow showers and colder Wednesday, then rain and snow showers likely (70%) Wednesday night.
- free air freezing level 9,000 ft. late tonight, 10,000 ft. rising to 11,000 ft. Monday afternoon through Tuesday, snow level 8,000 ft. falling to Tuesday night, 4,000 ft. Wednesday, then 2,000 ft. Wednesday night.
- lows 32-40 cooling to 25 Wednesday night highs 56-64 cooling to 38 Wednesday.
- Mostly cloudy with snow showers and a bit cooler Thursday, snow showers likely (70%) Thursday night,
- Mostly cloudy with snow showers likely (70%) Friday, a good (50%) chance of rain and snow showers at night,
- Mostly cloudy and a bit warmer with snow and rain likely (70%) Saturday, a good (50%) chance of snow and rain Saturday night,
- Mostly cloudy and a bit warmer with rain likely (70%) and a good (50%) chance of snow Sunday.
- snow level 2,000 ft. Thursday, 2,500 ft. Thursday night and Friday, 3,000 ft. Friday night, 2,500 ft. Saturday, then 3,000 ft. Saturday night and Sunday.
- highs 35-39 lows 22-25.
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