Mar
20.
Here is my 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 the weak frontal systems that are on the way to the Pacific Northwest. The graphics for days 3-7 Saturday through Wednesday show the frontal system that pushes through the Pacific Northwest Saturday, then Monday and next Wednesday.
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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 9 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 12 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 with a (40%) chance of evening rain, a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
- A mix of clouds and sun with a (40%) chance of rain and a bit warmer Thursday afternoon, a good (50%) chance of evening rain, rain likely (70%) late Thursday night (under 0.10 in. of rain possible),
- Mostly cloudy and a bit cooler with rain Friday, showers at night,
- Mostly cloudy and a bit cooler with showers Saturday, then showers likely (70%) Saturday night.
- lows 44-46 cooling to 42 Friday night and Saturday night highs 62-54.
- Mostly cloudy and a bit warmer with showers likely (70%) Sunday, rain likely (70%) Sunday night,
- Mostly cloudy with rain and a bit cooler Monday, showers at night,
- Mostly cloudy and a bit warmer with showers Tuesday, showers Tuesday night,
- Then mostly cloudy with showers Wednesday.
- highs 55-53 warming back to 55 Wednesday lows near 42. (seasonal averages high 57 low 38)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: HIGH (345)
WEEDS: ABSENT (0)
Measured 3.20.24
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:
- Becoming mostly cloudy with a slight (20%) chance of showers tonight,
- Mostly cloudy and a bit warmer with a slight (20%) chance of showers Thursday afternoon, a (30%) chance of showers Thursday night,
- Mostly cloudy with AM rain likely (70%), showers and a bit cooler with a slight (20%) chance of thunderstorms Friday afternoon, evening rain with a slight (20%) chance of thunderstorms, rain likely (70%) late at night (snow level 3,500 ft.),
- Mostly cloudy with showers and a bit cooler Saturday, evening showers with a slight (20%) chance of thunderstorms, then showers likely (70%) late Saturday night.
- lows 46-43 highs 66-55.
- Mostly cloudy with showers likely (70%) Sunday afternoon, a good (50%) chance of evening showers, rain likely (70%) late Sunday night,
- Then mostly cloudy with rain Monday through Wednesday.
- highs near 55 lows near 43. (seasonal average high 59 low 40)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with a slight (20%) chance of coastal showers tonight while a slight (20%) chance of inland showers late tonight,
- Mostly cloudy and a bit warmer with a (30%) chance of showers Thursday, a good (50%) chance of showers Thursday night,
- Mostly cloudy with AM coastal rain and a slight (20%) chance of thunderstorms while AM inland rain, a bit cooler with showers and a slight (20%) chance of thunderstorms Friday afternoon, evening coastal rain with coastal rain and a slight (20%) chance of thunderstorms late at night while mostly cloudy with inland rain at night,
- Mostly cloudy and a bit cooler with showers and a slight (20%) chance of thunderstorms Saturday and in the evening, then showers likely (70%) late Saturday night.
- lows 46-43 highs 62-64.
- Mostly cloudy with showers likely (70%) Sunday, a good (50%) chance of evening showers, rain likely (70%) Sunday night,
- Then mostly cloudy with rain Monday through Wednesday.
- highs near 55 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:
- Mostly cloudy a good (50%) chance of evening rain, a good (50%) chance of rain and snow showers late tonight (0.10 in. of rain possible, a trace of ice accumulation possible),
- Clouds and sun with a slight (20%) of AM showers, a slight (20%) chance of rain and a bit warmer Thursday afternoon and evening, a good (50%) chance of rain late Thursday night,
- Mostly cloudy with a good (50%) chance of AM rain, rain and a bit cooler Friday afternoon, then showers and snow showers with a slight (20%) chance of thunderstorms at night,
- Mostly cloudy with rain and snow showers and a bit cooler Saturday, then snow showers with rain showers likely (70%) Saturday night.
- snow level 5,000 ft. tonight and Thursday, 6,000 ft. Thursday night, 5,500 ft. Friday, 5,500 ft. falling to 4,500 ft. Friday afternoon, 3,500 ft. Saturday, then 4,000 ft. Saturday night.
- lows 32-35 cooling to 29 Friday night and Saturday night highs 48-38.
- Mostly cloudy and a bit cooler with snow and rain showers Sunday, snow with rain likely (70%) Sunday night,
- Mostly cloudy with rain showers and snow Monday (snow possibly heavy at times), snow and rain showers at night,
- Then mostly cloudy with snow and rain showers Tuesday through Wednesday.
- snow level 3,500 ft. Sunday through Monday, then 4,000 ft. Monday night through Wednesday.
- highs near 36 lows near 28.
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