Mar
13.
Here is my new weekly weather quiz question. “What is a “Psychrometer?”
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An Upper Level High Pressure Ridge (“Arch” shape) is strengthening and will taking over with warmer and dry weather. The graphics for days 1-3 show no frontal systems approaching the Pacific Coast. The graphics for days 3-7 Saturday through Wednesday show the frontal system that will push toward the Pacific Northwest Tuesday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 11 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 4 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 5 in the 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 areas of frost late tonight,
- Widespread AM frost, mostly sunny and warmer Thursday afternoon, mostly clear Thursday night,
- Mostly sunny and warmer Friday, clear at night,
- Mostly sunny and a bit warmer Saturday, then clear Saturday night.
- lows 32-42 highs 58-73.
- Mostly sunny and a bit cooler Sunday afternoon, mostly clear Sunday night,
- Some AM clouds, mostly sunny and a bit cooler Monday afternoon, partly cloudy at night,
- Partly cloudy and a bit cooler Tuesday, a slight (20%) chance of evening rain, mostly cloudy with a slight (20%) chance of rain late Tuesday night,
- Then mostly cloudy and a bit cooler with a (30%) chance of rain Wednesday.
- highs 72-57 lows 43-45 cooling to 42 Monday night. (seasonal averages high 56 low 37)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: MODERATE (36)
WEEDS: ABSENT (0)
Measured 3.13.24
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 Thursday, clear Thursday night,
- Sunny and warmer Friday, clear at night,
- Sunny Saturday, then clear Saturday night.
- lows 33-43 highs 62-70.
- Sunny Sunday, mostly clear Sunday night,
- Mostly sunny and a bit warmer Monday, mostly clear in the evening, partly cloudy late at night,
- Mostly cloudy start, partly cloudy with a slight (20%) chance of showers and a bit cooler Tuesday afternoon, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers Tuesday night,
- Then mostly cloudy with a slight (20%) chance of rain Wednesday.
- highs 70-72 cooling to 62 Wednesday lows 45-47 cooling back to 45 Tuesday night. (seasonal average high 58 low 39)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy this evening, clear late tonight,
- Sunny and a bit warmer Thursday and Friday, clear both nights,
- Sunny and a bit cooler Saturday, then mostly clear Saturday night.
- lows 37-44 highs 62-69 cooling to 66 Saturday.
- Mostly sunny and a bit cooler Sunday, mostly clear Sunday night,
- Some AM clouds, sunny and a bit cooler Monday afternoon, partly cloudy in the evening, mostly cloudy at night,
- Mostly cloudy start, partly cloudy and a bit cooler with a slight (20%) chance of showers Tuesday afternoon, mostly cloudy with a slight (20%) chance of showers Tuesday night,
- Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Wednesday.
- highs 63-57 lows 45-43. (seasonal average high 55 low 42)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly clear tonight,
- Mostly sunny and warmer Thursday, clear Thursday night,
- Mostly sunny and a bit warmer Friday, mostly clear at night,
- Sunny and a bit warmer Saturday, then clear Saturday night.
- free air freezing level 4,000 ft. falling to the surface late tonight, 5,000 ft. rising to 9,000 ft. Thursday afternoon, 10,000 ft. Thursday night, 9,000 ft. rising to 11,000 ft. Friday, then 11,000 ft. Friday night through Saturday night.
- lows 19-30 highs 43-56.
- Mostly sunny Sunday and Monday, clear both nights,
- Partly cloudy with a slight (20%) chance of rain Tuesday, a good (50%) chance of rain Tuesday night,
- A mix of clouds and sun with a good (50%) chance of rain and a bit cooler Wednesday.
- free air freezing level 10,000 ft. Sunday, 11,000 ft. Sunday night and Monday, 10,000 ft. Monday night, snow level 7,000 ft. Tuesday, 6,500 ft. Tuesday night, then 5,000 ft. Wednesday.
- highs 56-45 lows 32-34 cooling back to 32 Tuesday night.
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