May
28.
Here is my weekly weather quiz question. “What is a “Rocketsonde?”
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An Upper Level High Pressure Ridge (“Arch” shape ) is approaching the West Coast. The graphics for days 1-3 show a weak frontal system that slid into the Pacific Northwest today. The graphics for days 3-7 Friday through Tuesday show a cold front that will be moving through Oregon between Saturday and Sunday followed closely by another complex frontal system Monday and next Tuesday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 36 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 12 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 13 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- A SEVERE THUNDERSTORM WARNING IS IN EFFECT UNTIL 4:45 PM THIS EVENING FOR NORTHEASTEN HARNEY COUNTY AND AND WEAST CENTRAL MALHEUR COUNTY.
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:
- Partly cloudy with a slight (20%) chance evening showers, just mostly cloudy late tonight,
- Mostly sunny and a bit warmer Wednesday, partly cloudy in the evening, mostly clear late Wednesday night,
- Sunny and a bit warmer Thursday, clear at night,
- Sunny and a bit warmer Friday, partly cloudy in the evening, then mostly cloudy late Friday night.
- lows 46-42 warming to 48 Friday night high 67-77.
- A mix of clouds and sun and a bit cooler Saturday, mostly cloudy with a slight (20%) chance of rain Saturday night,
- Mostly cloudy with a good (50%) chance of showers Sunday, mostly cloudy with a good (50%) chance of rain at night,
- Mostly cloudy with a good (50%) chance of rain and a bit cooler Monday, a good (50%) chance of rain Monday night,
- Then a mix of clouds and sun and a bit warmer with a (30%) chance of rain Tuesday.
- highs 72-69 warming to 75 Tuesday lows 50-53. (seasonal averages high 70 low 45)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: HIGH (420)
TREES: MODERATE (20)
WEEDS: LOW (5)
Measured 5.28.24
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 with a (30%) chance of evening rain, mostly cloudy with patchy fog late tonight,
- Some AM clouds, sunny and a bit warmer Wednesday afternoon, mostly clear Wednesday night,
- Some AM clouds, sunny and a bit warmer Thursday afternoon, mostly clear at night,
- Sunny and a bit warmer Friday, then clear Friday night.
- lows 49-45 warming to 48 Thursday night highs 69-75.
- Partly cloudy start, mostly cloudy and a bit warmer Saturday afternoon, mostly cloudy with a slight (20%) chance of rain Saturday night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of rain Sunday, a (40%) chance of rain at night,
- Mostly cloudy and a bit cooler with a (40%) chance of rain Monday, a (30%) chance of rain Monday night,
- Mostly cloudy slight (20%) chance of AM rain, then partly cloudy and warmer with a slight (20%) chance of rain Tuesday afternoon.
- highs 80-82 cooling to 75 Monday lows 50-55. (seasonal average high 73 low 50)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy with patchy evening fog, mostly cloudy with patchy fog late tonight,
- Mostly cloudy with patchy AM fog, partly cloudy Wednesday afternoon, mostly clear in the evening, partly cloudy Wednesday night with patchy inland fog late,
- Some AM clouds, sunny and a bit warmer Thursday afternoon, mostly clear with patchy fog late at night,
- Sunny and a bit warmer Friday, then mostly cloudy Friday night.
- lows 46-43 highs 64-62 warming back to 64 Thursday night.
- Mostly cloudy Saturday, mostly cloudy with a slight (20%) chance of rain late Saturday night,
- Mostly cloudy with a (30%) chance of rain Sunday, cloudy with a good (50%) chance of rain at night,
- Mostly cloudy with a good (50%) chance of rain Monday, a (30%) chance of rain Monday night,
- Then mostly cloudy with a (30%) chance of rain Tuesday.
- highs near 65 lows 45-50. (seasonal average high 62 low 50)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with a good (50%) chance of evening showers, a slight (20%) of showers late tonight (0.10 in. of rain possible),
- Mostly sunny and a bit warmer Wednesday, partly cloudy Wednesday night,
- Sunny Thursday, clear at night.
- Sunny and warmer Friday, partly cloudy in the evening, then mostly cloudy late Friday night.
- snow level 6,500 ft. falling to 5,500 ft. late tonight, 5,500 ft. rising to 6,500 ft. Wednesday afternoon, free air freezing level 8,000 ft. falling to 9,000 ft. late Wednesday night, 10,000 ft. Thursday, 10,000 ft. rising to 12,000 ft. Thursday night, then 12,000 ft. Friday and Friday night.
- lows 35-32 warming 36 Thursday night highs 55-52 warming to 62 Thursday.
- A mix of clouds and sun Saturday, mostly cloudy with a (40%) chance of showers Saturday night,
- A mix of clouds and sun with a good (50%) chance of showers and a bit cooler Sunday, mostly cloudy with a good (50%) chance of rain at night,
- Mostly cloudy with a good (50%) chance of rain Monday and Monday night,
- Then a mix of clouds and sun with a (40%) chance of rain Tuesday.
- free air freezing level 10,000 ft. Saturday, snow level 8,000 ft. Saturday night, then above 8,000 ft. Sunday through Tuesday.
- highs 67-62 lows 39-43.
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