Apr
07.
Here is my new weekly weather quiz question. “What is a “Radiosonde?”
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A strong Upper Level Low Pressure Trough (“U” shape) is moving through the Pacific Northwest to be followed by a building Upper Level High Pressure Ridge next week. The graphics for days 1-3 show a frontal system moving into the Pacific Northwest today into Tuesday. The graphics for days 3-7 Thursday through Monday show frontal systems moving over the Pacific Northwest Wednesday and Friday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 9 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 20 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 LATE FRIDAY EVENING FOR THE OWYHEE RIVER BELOW THE OWYHEE DAM AFFECTING MALHEUR COUNTY.
- A FROST ADVISORY IS IN EFFECT UNTIL 9 AM TODAY ABOVE 1,000 FT. FOR THE UPPER HOOD RIVER VALLEY.
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 sunny and a bit warmer today, mostly cloudy tonight,
- AM clouds, a mix of clouds sun and a bit warmer Tuesday afternoon, partly cloudy at night,
- Mostly sunny and a bit warmer Wednesday, then partly cloudy Wednesday night.
- highs 60-66 lows 45-39 warming to 40 Wednesday night.
- Mostly sunny and a bit cooler Thursday, mostly cloudy with a good (50%) chance of rain Thursday night,
- Mostly cloudy and cooler rain likely (70%) Friday, a good (50%) chance of rain at night,
- A mix of clouds and sun and a bit warmer with a good (50%) chance of rain Saturday, mostly cloudy with a good (50%) chance of rain Saturday night,
- Then a mix of clouds and sun and a bit warmer with a (40%) chance of rain Sunday.
- highs 65-55 warming to 58 Sunday lows 42-38. (seasonal averages high 60 low 39)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: HIGH (142)
WEEDS: ABSENT (0)
Measured 4.8.24
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:
- AM clouds, partly cloudy and a bit warmer this afternoon, partly cloudy tonight,
- Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer Tuesday afternoon, just partly cloudy at night,
- Partly cloudy and a bit warmer Wednesday, then partly cloudy Wednesday night.
- highs 63-72 lows 43-42.
- Partly cloudy and a bit cooler Thursday, mostly cloudy with a (30%) chance of rain Thursday night,
- Mostly cloudy and cooler with a good (50%) chance of rain and snow Friday, a (40%) chance of rain and snow at night,
- Mostly cloudy and a bit warmer with a (40%) chance of rain and snow Saturday, a slight (20%) chance of rain Saturday night,
- Mostly cloudy with a slight (20%) chance of AM rain and snow, then partly cloudy and a bit warmer with a slight (20%) chance of rain Sunday afternoon.
- highs 68-55 warming to 60 Sunday lows 42-38 warming to 40 Saturday night. (seasonal averages high 61 low 41)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Some AM clouds, partly cloudy and a bit warmer this afternoon, partly cloudy in the evening, mostly cloudy late tonight,
- Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer Tuesday afternoon, partly cloudy at night,
- Partly cloudy and a bit warmer Wednesday, then partly cloudy Wednesday night.
- highs 58-62 lows 44-42.
- Partly cloudy and a bit cooler Thursday, mostly cloudy with a (40%) chance of rain Thursday night,
- Mostly cloudy and a bit cooler with a good (50%) chance of rain Friday, a (40%) chance of rain at night,
- Mostly cloudy and a bit warmer with a (40%) chance of rain Saturday, a slight (20%) chance of rain Saturday night,
- Mostly cloudy with a slight (20%) chance of AM rain, then partly cloudy and a bit warmer with a slight (20%) chance of rain Sunday afternoon.
- highs 58-53 warming to 57 Sunday lows 42-40. (seasonal average high 56 low 43)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly sunny and a bit warmer today, partly cloudy tonight,
- Mostly sunny and a bit warmer with a slight (20%) chance of showers Tuesday, partly cloudy at night,
- Mostly sunny and warmer Wednesday, partly cloudy in the evening, then mostly clear Wednesday night.
- free air freezing level 4,000 ft. rising to 6,000 ft. this afternoon, 6,000 ft. tonight, snow level 6,000 ft. Tuesday, then 8,000 ft. Tuesday night,
- highs 46-59 lows 32-30 warming to 35 Wednesday night.
- Mostly sunny and a bit cooler Thursday, mostly cloudy with a good (50%) chance of rain and snow Thursday night,
- Mostly cloudy and cooler with snow and rain likely (70%) Friday, snow and rain likely (70%) at night,
- Mostly cloudy with a good (50%) chance of AM snow and rain, partly cloudy and a bit cooler with a good (50%) chance of snow and rain Saturday afternoon, mostly cloudy with a good (50%) chance of snow and rain Saturday night,
- A mix of clouds and sun and a bit warmer with a good (50%) chance of snow and rain Sunday.
- free air freezing level 10,000 ft. Thursday, snow level 5,500 ft. Thursday night, 4,000 ft. Friday, 3,000 ft. Friday night, then 3,500 ft. Saturday through Sunday.
- highs 57-38 warming to 43 Sunday lows 32-27.
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