Sep
01.
An Upper Level High Pressure Ridge (“Arch” shape) takes over Tuesday through Thursday bringing warmer temperatures. The graphics for days 1-3 show no frontal systems sliding into the Pacific Northwest. The graphics for days 3-7 Thursday through Monday show a cold front moving eastward through Northern California next Monday.
ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT FOR THUNDERSTORMS FROM 2 PM UNTIL 9 PM TUESDAY FOR THE NORTHERN WILLAMETTE NATIONAL FOREST AND THE SOUTHERN WILLAMETTE NATIONAL FOREST.
- A RED FLAG WARNING IS IN EFFECT FOR THUNDERSTORMS FROM 2 PM UNTIL 9 PM TUESDAY FOR THE NORTHERN WILLAMETTE NATIONAL FOREST AND THE SOUTHERN WILLAMETTE NATIONAL FOREST,
- A RED FLAG WARNING IS IN EFFECT FROM 1 PM UNTIL 9 PM TUESDAY FOR ABUNDANT LIGHTNING ON DRY FUELS FOR THE UMPQUA NATIONAL FOREST, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTY.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 11 AM TUESDAY FOR SOUTHERN DESCHUTES COUNTY.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 11 AM TUESDAY FOR KLAMATH COUNTY.
- AN EXTREME HEAT WARNING IS IN EFFECT FROM 11 AM TUESDAY UNTIL 8 PM THURSDAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON, THE LOWER COLUMBIA BASIN OF OREGON, THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, AND NORTH CENTRAL OREGON.
- A HEAT ADVISORY IS IN EFFECT FROM NOON TUESDAY UNTIL 9 PM WEDNESDAY FOR THE WESTERN COLUMBIA RIVER GORGE I-84 CORRIDOR, UPPER HOOD RIVER VALLEY, AND EASTERN COLUMBIA RIVER GORGE SR-14 CORRIDOR.
- A HEAT ADVISORY IS IN EFFECT FROM 11 AM UNTIL 8 PM TUESDAY FOR THE GRANDE RONDE VALLEY, THE NORTHERN BLUE MOUNTAINS OF OREGON, THE JOHN DAY BASIN, AND CENTRAL OREGON.
HEALTH ADVISORIES:
- A RECREATIONAL HEALTH ADVISORY IS IN EFFECT DUE TO A FOR THE WILLAMETTE RIVER TO INCLUDE ROSS ISLAND BRIDGE DOWN RIVER TO WAPATO BRIDGE AND KELLY POINT PARK. AREAS OF THE RIVER AFFECTED BY THE ADVISORY ARE IN MULTNOMAH COUNTY. *PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS WHERE BLOOMS ARE PRESENT, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE WILLAMETTE RIVER TO ENJOY ACTIVITIES SUCH AS FISHING, HIKING, BIKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY, WHICH INCREASES THE RISK OF INHALING CYANOTOXINS.
- A RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR ODEL LAKE IN KLAMATH COUNTY DUE TO THE PRESENCE OF MICROCYSTIN.*PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS WHERE BLOOMS ARE PRESENT, AS THE MAJOR ROUT OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT ODEL LAKE TO ENJOY ACTIVITIES SUCH AS FISHING, HIKING, BIKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY, WHICH INCREASES THE RISK OF INHALING MICROCYSTIN.
- A RECREATIONAL HEALTH ADVISORY IS IN EFFECT DUE TO A FOR BROWNLEE RESERVOIR IN BAKER COUNTY DUE TO THE SPREAD OF *PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS WHERE BLOOMS ARE PRESENT, AS THE MAJOR ROUT OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE WILLAMETTE RIVER TO ENJOY ACTIVITIES SUCH AS FISHING, HIKING, BIKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY, WHICH INCREASES THE RISK OF INHALING CYANOTOXINS. *
- A RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR ECKMAN LAKE IN LINCOLN COUNTY DUE TO THE PRESENCE OF CYANOBACTERIA.*PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS WHERE BLOOMS ARE PRESENT, AS THE MAJOR ROUT OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT ODEL LAKE TO ENJOY ACTIVITIES SUCH AS FISHING, HIKING, BIKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY, WHICH INCREASES THE RISK OF INHALING SAXITOXIN (PSP).
- A RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR UPPER KLAMATH LAKE IN KLAMATH COUNTY DUE TO THE PRESENCE OF MICROCYSTIN.*PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS WHERE BLOOMS ARE PRESENT, AS THE MAJOR ROUT OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT UPPER KLAMATH LAKE TO ENJOY ACTIVITIES SUCH AS FISHING, HIKING, BIKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY, WHICH INCREASES THE RISK OF INHALING MICROCYSTIN.
- 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 41 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 43 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 40 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 8.28.25
Data courtesy of Oregon Allergy Associates.
The grass pollen season has just about ended.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:Mostly clear tonight,
- Mostly clear tonight,
- Patchy AM fog, sunny and hazy and warmer (HOT) Tuesday, evening haze, mostly cloudy with a slight (20%) chance of showers Tuesday night,
- A mix of clouds and sun and still HOT Wednesday, partly cloudy at night,
- Mostly sunny and (HOT) Thursday, then partly cloudy Thursday night.
- lows 54-60 cooling to 57 Thursday night highs 92-90.
- Mostly sunny and a bit cooler Friday, partly cloudy in the evening, mostly cloudy late Friday night,
- A mix of clouds and sun and a bit cooler Saturday, partly cloudy at night,
- AM clouds, mostly sunny and a bit cooler Sunday, partly cloudy in the evening, mostly cloudy late Sunday night,
- Then a mix of clouds and sun with a (30%) chance of showers Monday.
- highs 87-82 lows 58-55 (seasonal averages high 82 low 50).
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YOUR SATURDAY COLLEGE FOOTBALL WEATHER FORECAST:
SATURDAY AUGUST 30TH:
Ducks vs. Montana State Bobcats at Autzen Stadium, Game Time 1:00 pm Ducks clobbered Montana State 59-13.
Beavers vs. Cal Golden Bears at Reser Stadium, Game Time 7:30 PM- The Beavers lost to the Cal Bears 35-15.
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Forecast for the Umpqua Valley including Roseburg:
- Mostly clear tonight,
- Sunny and warmer (HOT) with a slight (20%) chance of thunderstorms Tuesday afternoon, mostly cloudy with a slight (20%) chance of evening thunderstorms, just mostly cloudy late Tuesday night,
- Mostly cloudy start, partly cloudy and a bit cooler (HOT) Wednesday afternoon, partly cloudy in the evening, clear late at night,
- Partly cloudy and still (HOT) Thursday, then partly cloudy Thursday night.
- lows 59-64 cooling to cooling to 62 Wednesday night and Thursday night highs 95-93.
- Partly cloudy and a bit cooler (HOT) Friday, partly cloudy Friday night,
- Partly cloudy and a bit cooler (still very warm) Saturday, partly cloudy at night,
- Mostly cloudy start, partly cloudy and a bit cooler Sunday afternoon, mostly cloudy with a slight (20%) chance of showers Sunday night,
- Then mostly cloudy and a bit cooler with a (30%) chance of showers Monday.
- highs 90-82 lows 62-59.
- (seasonal averages high 84 low 55).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy this evening, mostly cloudy late tonight,
- Some AM clouds, sunny and a bit warmer Tuesday, mostly cloudy Tuesday night,
- Mostly cloudy and a bit cooler Wednesday, mostly cloudy at night,
- Mostly cloudy Thursday, then mostly cloudy Thursday night.
- lows 55-57 highs 74-73.
- Mostly cloudy and a bit cooler Friday, mostly cloudy Friday night,
- Mostly cloudy and a bit warmer Saturday, mostly cloudy at night,
- Mostly cloudy Sunday, mostly cloudy with a slight (20%) chance of showers Sunday night,
- Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Monday.
- highs 72-73 cooling back to 72 Monday lows 57-55.
- (seasonal averages high 67 low 53). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Partly cloudy and hazy with areas of evening smoke, clear and hazy with areas of smoke late tonight,
- Sunny and a bit warmer and hazy Tuesday with areas of afternoon smoke, mostly cloudy with a (40%) chance of evening showers, mostly cloudy with areas of smoke and night,
- Mostly sunny and a bit cooler with a slight (20%) chance of thunderstorms Wednesday, partly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late at night,
- Mostly sunny Thursday, partly cloudy Thursday night,
- free air freezing level 15,000 ft. tonight through Tuesday night, 14,000 ft. Wednesday, snow level above 8,000 ft. Wednesday night, then free air freezing level 14,000 ft. Thursday and Thursday night.
- lows 52-57 cooling to 55 Wednesday night highs 85-82.
- Mostly sunny and a bit cooler Friday, partly cloudy with a slight (20%) chance of thunderstorms Friday night,
- Mostly sunny and a bit cooler with a slight (20%) chance of showers Saturday, just partly cloudy at night,
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Sunday, mostly cloudy with a slight (20%) chance of showers Sunday night,
- Then a mix of of clouds and sun and a bit cooler with a (40%) chance of showers Monday.
- free air freezing level 14,000 ft. Friday and Friday night, snow level above 8,000 ft. Saturday, free air freezing level 13,000 ft. Saturday night, then snow level above 8,000 ft. Sunday through Monday.
- highs 78-64 lows 52-57.
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