Aug
16.
An Upper Level Low Pressure Trough (“U”Shape) moves through early this AM. Then an Upper Level High Pressure Ridge takes over bringing sunshine and warmer temperatures. The graphics for days 1-3 show a cold frontal system that moved through the Pacific Northwest Saturday. The graphics for days 3-7 Wednesday through Sunday show a cold front moved through Wednesday and a cold front well to our northwest next Sunday.
ADVISORIES:
- A FLASH FLOOD WATCH IS IN EFFECT THROUGH THIS EVENING FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE 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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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 23 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 21 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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Eugene-Springfield Area Pollen count:
GRASS: 2 LOW
TREES: 0 ABSENT
WEEDS: 0 ABSENT
Measured 8.14.25
Data courtesy of Oregon Allergy Associates.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- A mix of clouds and sun and a bit warmer today, mostly cloudy tonight,
- AM clouds and sun, sunny Monday afternoon, mostly clear at night,
- Sunny and a bit warmer Tuesday, then mostly clear Tuesday night.
- highs 80-84 lows 55-52 warming to 54 Tuesday night.
- Sunny and a bit warmer Wednesday and Thursday, clear both nights,
- Sunny and a bit warmer Friday, clear Friday night,
- Then sunny Saturday.
- highs 86-92 lows near 55. (seasonal averages high 84 low 52).
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Forecast for the Umpqua Valley including Roseburg:
- Some AM clouds, sunny and a bit warmer this afternoon, partly cloudy tonight,
- Some AM clouds, sunny Monday afternoon, clear at night,
- Mostly sunny and a bit warmer Tuesday, then clear Tuesday night.
- highs 83-85 lows 58-55 warming back to 58 Tuesday night.
- Sunny and a bit warmer Wednesday, clear Wednesday night,
- Sunny and a bit warmer Thursday and Friday, clear both nights,
- Then sunny Saturday.
- highs near 87-93 lows 59-60. (seasonal averages high 86 low 57).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- AM clouds with patchy fog, partly cloudy and a bit warmer this afternoon, mostly cloudy this evening, partly cloudy with patchy fog late tonight,
- Some AM clouds with patchy fog, sunny Monday afternoon, mostly clear at night,
- Mostly sunny and a bit warmer Tuesday, then mostly clear Tuesday night.
- highs 73-74 lows 54-53 warming to 56 Tuesday night.
- Mostly sunny and a bit cooler Wednesday, clear Wednesday night,
- Sunny and a bit warmer Thursday, clear at night,
- Sunny and a bit cooler Friday, clear Friday night,
- Then sunny Saturday.
- highs 73-75 cooling to 74 Friday and Saturday lows near 54.
- (seasonal averages high 67 low 54). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly sunny and a bit warmer today, mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy tonight,
- AM clouds and sun, sunny Monday afternoon, mostly clear at night,
- Sunny and a bit warmer Tuesday, then mostly clear Tuesday night.
- free air freezing level 13,000 ft. today, snow level above 8,000 ft. tonight, free air freezing level 13,000 ft. rising to 14,000 ft. Monday, then 14,000 ft. Monday night through Tuesday night.
- highs 72-70 warming to 73 Tuesday lows 47-45 warming to 46 Tuesday night.
- Sunny and a bit warmer Wednesday and Thursday, clear both nights,
- Sunny and a bit warmer Friday, clear Friday night,
- Then sunny Saturday.
- free air freezing level 13,000 ft. Wednesday, 15,000 ft. Wednesday night and Thursday, then 16,000 ft. Thursday through Saturday.
- 73-84 cooling to 82 Saturday lows 47-53.
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