Mar
19.
Here is my new weekly weather quiz question. “What is the “QPf Discussion?”
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An Upper Level High Pressure Ridge (“Arch” shape) starts migrating away from us. The graphics for days 1-3 show a weak frontal system approaching the Pacific Coast returning clouds and rain. The graphics for days 3-7 Saturday through Wednesday show the frontal system that pushes through the Pacific Northwest Saturday, then a complex frontal system sits well offshore Tuesday, then pushing into Oregon next Wednesday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 19 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 22 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 15 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 cloudy, sun breaks, and a bit cooler with a (30%) chance of drizzle this afternoon, a (30%) chance of drizzle tonight,
- Mostly cloudy with a slight (20%) chance of AM drizzle, a bit warmer with with a good (50%) chance of drizzle Thursday afternoon, a good (50%) chance of drizzle with showers likely (70%) at night,
- Then mostly cloudy and a bit cooler with showers and a slight (20%) chance of thunderstorms Friday and Friday night.
- highs 60-63 cooling back to 60 Friday lows 45-42.
- Mostly cloudy and a bit cooler with showers Saturday, showers likely (70%) Saturday night,
- Mostly cloudy and a bit cooler with Sunday, rain likely (70%) at night,
- Mostly cloudy with rain Monday, rain likely (70%) Monday night,
- Then mostly cloudy and a bit warmer with rain likely (70%) Tuesday.
- highs 56-53 warming to 55 Tuesday lows near 42. (seasonal averages high 57 low 38)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: VERY HIGH (504)
WEEDS: ABSENT (0)
Measured 3.19.24
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 and a bit cooler with a slight (20%) chance of rain this afternoon, a (30%) chance of rain tonight,
- Mostly cloudy and a bit warmer with a (30%) chance of rain Thursday, a (40%) chance of rain at night,
- Mostly cloudy with AM rain, showers and a bit cooler with a slight (20%) chance of thunderstorms Friday afternoon, evening showers, showers likely (70%) late Friday night.
- highs 63-66 cooling to 62 Friday lows near 45.
- Mostly cloudy with showers and a bit cooler Saturday and in the evening, showers likely (70%) late Saturday night,
- Mostly cloudy with AM rain and snow showers, a bit cooler with rain and snow showers Sunday afternoon, evening showers likely (70%), rain likely (70%) at night,
- Mostly cloudy with rain likely (70%) Monday and Monday night,
- Then mostly cloudy with rain likely (70%) Tuesday.
- highs 57-54 warming to 56 Tuesday lows near 42. (seasonal average high 59 low 40)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Patchy AM fog, mostly cloudy and a bit warmer with a (30%) chance of coastal rain today while a (30%) chance of inland rain and a bit warmer this afternoon, a (40%) chance of rain tonight,
- Mostly cloudy and a bit warmer with a (40%) chance of rain Thursday and in the evening, rain likely (70%) late at night,
- Mostly cloudy with AM rain, a bit cooler with showers and a slight (20%) chance of thunderstorms Friday afternoon, then mostly cloudy with showers Friday night.
- highs 58-62 cooling to 59 Friday lows 46-44.
- Mostly cloudy and a bit cooler with showers Saturday and in the evening, showers likely (70%) late Saturday night,
- Mostly cloudy with showers likely (70%) and a bit cooler Sunday, showers likely (70%) at night,
- Mostly cloudy and a bit warmer with rain Monday, rain Monday night,
- Then mostly cloudy with rain likely (70%) Tuesday.
- highs 55-53 warming back to 55 Monday and Tuesday lows near 43. (seasonal average high 55 low 42)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- A mix of clouds and sun with a good (50%) chance of drizzle this afternoon, a good (50%) chance of drizzle with possible rain, freezing rain, freezing drizzle and snow likely (70%) tonight (under 0.10 in. of rain possible, a trace of ice accumulation possible),
- Clouds and sun with a (30%) of AM snow and freezing drizzle, a mix of clouds and sun with a good (50%) chance of drizzle Thursday afternoon, mostly cloudy with a good (50%) chance of evening drizzle, freezing drizzle, and snow, rain showers likely (70%) late at night,
- Mostly cloudy with showers with possible snow showers and thunderstorms likely (70%) Friday, then showers and snow showers with a slight (20%) chance of thunderstorms Friday night.
- free air freezing level 9,000 ft. falling to 8,000 ft. this afternoon, snow level 5,000 ft. tonight, free air freezing level 6,500 ft.Thursday afternoon and Thursday night, snow level 5,500 ft. Friday, then 4,500 ft. Friday night.
- highs near 48 lows 33-35 cooling to 29 Friday night.
- Mostly cloudy with rain and snow showers and a bit cooler Saturday, snow and rain showers likely (70%) Saturday night,
- Mostly cloudy and a bit cooler with snow and rain Sunday, snow and rain likely (70%) at night,
- Mostly cloudy with snow and rain Monday, snow and rain likely (70%) Monday night,
- Mostly cloudy with rain and snow Tuesday.
- snow level 4,000 ft. Saturday, then 3,500 ft. Saturday night through Tuesday.
- highs 39-36 lows near 28.
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