Aug
07.
An Upper Level High Pressure Ridge (“Arch “Shape) takes over producing some hot weather. The graphics for days 1-3 show the weak cold frontal system moving through the Pacific Northwest Thursday. The graphics for days 3-7 Monday through Friday show no frontal systems on the way to Oregon.
ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT FROM 2 PM UNTIL 8 PM TODAY FOR THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY, AND THE EASTERN ROUGE VALLEY.
- A FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING STRONG GUSTY WIND FOR THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY, AND THE EASTERN ROUGE VALLEY.
- AN EXTREME HEAT WATCH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING FOR LOWER COLUMBIA RIVER, TUALATIN VALLEY, PORTLAND WEST HILLS AND CHEHALEM MOUNTAIN, INNER PORTLAND METRO, EAST PORTLAND METRO, OUTER SOUTHEAST PORTLAND METRO, WEST CENTRAL WILLAMETTE VALLEY, EAST CENTRAL WILLAMETTE VALLEY, BENTON COUNTY LOWLANDS, LINN COUNTY LOWLANDS, LANE COUNTY LOWLANDS, WEST COLUMBIA RIVER GORGE I-84 CORRIDOR, UPPER HOOD RIVER VALLEY, AND CENTRAL COLUMBIA RIVER GORGE I-84 CORRIDOR.
- AN EXTREME HEAT WATCH IS IN EFFECT FROM SUNDAY MORNING THROUGH LATE MONDAY NIGHT FOR CENTRAL DOUGLAS COUNTY.
- AN EXTREME HEAT WATCH IS IN EFFECT FROM SUNDAY MORNING THROUGH LATE MONDAY NIGHT FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON 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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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 21 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 23 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: 3 LOW
TREES: 0 ABSENT
WEEDS: 0 ABSENT
Measured 8.7.25
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:
- Sunny and a bit warmer today, mostly clear tonight,
- Mostly sunny and a bit warmer (Hot) Saturday, partly cloudy in the evening, mostly clear late at night,
- Sunny and a bit warmer (Hot) Sunday, then clear Sunday night.
- highs 86-100 lows 54-62.
- Sunny and a bit cooler (Hot) Monday, clear Monday night,
- Sunny and a bit cooler (still very warm) Tuesday, mostly clear at night,
- Sunny and a bit cooler, but warm, Wednesday,mostly clear Wednesday night,
- Then mostly sunny and a bit cooler Thursday.
- highs 98-86 lows 57-53. (seasonal averages high 86 low 52).
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Forecast for the Umpqua Valley including Roseburg:
- Sunny and a bit warmer today, mostly clear night,
- Sunny and a bit warmer Saturday, mostly clear at night,
- Sunny and a bit warmer (Hot) Sunday, then clear Sunday night.
- highs 89-101 lows 62-67.
- Sunny and (Hot) Monday, clear Monday night,
- Sunny and a bit cooler (still Hot)|Tuesday, mostly clear at night,
- Mostly sunny and a bit cooler Wednesday, mostly clear Wednesday night,
- Then mostly sunny and a bit cooler Thursday.
- highs 101-89 lows 63-59. (seasonal averages high 87 low 58).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Sunny and a bit warmer today, mostly clear tonight,
- Sunny Saturday, partly cloudy at night,
- Mostly sunny and a bit warmer Sunday, then mostly clear Sunday night.
- highs 74-80 lows 56-58.
- Mostly sunny and a bit cooler Monday, mostly clear Monday night,
- Partly cloudy and a bit cooler Tuesday afternoon, partly cloudy at night,
- Partly cloudy and a bit cooler Wednesday, partly cloudy Wednesday night,
- Then partly cloudy Thursday.
- highs 76-33 lows 56-55.
- (seasonal averages high 67 low 54). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Sunny and a bit warmer today, mostly clear tonight,
- Sunny and a bit warmer Saturday, partly cloudy in the evening, mostly clear late at night,
- Sunny and a bit warmer Sunday, then mostly clear Sunday night,
- free air freezing level 15,000 ft. today, 16,000 ft. tonight, 16,000 ft. rising to above 16,000 ft. Saturday afternoon, then above 16,000 ft. Saturday night.
- highs 67-78 lows 56-58.
- Sunny and a bit cooler Monday, mostly clear Monday night,
- Sunny and a bit cooler Tuesday and Wednesday, mostly clear Tuesday night,
- Then sunny and a bit cooler Thursday.
- free air freezing level above 16,000 ft. Monday, 16,000 ft. Monday night and Tuesday, 15,000 ft. Tuesday night, 14,000 ft. Wednesday, 15,000 ft. Wednesday night, then 14,000 ft. Thursday.
- highs 85-88 cooling to 80 Wednesday lows 57-55.
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