Sep
02.
An Upper Level High Pressure Ridge (“Arch” shape) takes over 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 Saturday through Wednesday show a cold front moving eastward through Northern California Monday. A cold front will be to our northwest moving through between Tuesday and Wednesday.
ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM TONIGHT 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
- A RED FLAG WARNING IS IN EFFECT FROM NOON UNTIL 9 PM TODAY FOR DRY THUNDERSTORMS FOR THE MT. HOOD NATIONAL FOREST REGION.
- A RED FLAG WARNING IS IN EFFECT UNTIL 8 PM TONIGHT FOR ABUNDANT LIGHTNING FOR THE SOUTHERN DESCHUTES NATIONAL FOREST.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 8 PM TONIGHT FOR SOUTHERN DESCHUTES COUNTY.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 11 AM TODAY FOR KLAMATH COUNTY.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 9 PM THURSDAY FOR THE LANE COUNTY CASCADE FOOTHILLS AND THE CASCADES OF LANE COUNTY.
- AN EXTREME HEAT WARNING IS IN EFFECT 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 TODAY UNTIL 9 PM TONIGHT 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 TODAY FOR THE GRANDE RONDE VALLEY AND THE JOHN DAY BASIN,
- A HEAT ADVISORY IS IN EFFECT UNTIL 8 PM THURSDAY FOR THE NORTHERN BLUE MOUNTAINS OF 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 84 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 96 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 86 in the Moderate 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:
- AM clouds with a slight (20%) chance of thunderstorms, mostly sunny and a bit warmer with a slight (20%) chance of thunderstorms this afternoon, mostly clear tonight,
- Sunny with a slight (20%) chance of showers and a bit warmer Thursday afternoon, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers and isolated thunderstorms late at night,
- A mix of clouds and sun and a bit cooler Friday, then mostly cloudy with a slight (20%) chance of showers Friday night.
- highs 92-93 cooling to 85 Friday lows 59-58.
- Mostly cloudy and a bit cooler with a (40%) chance of showers Saturday, partly cloudy Saturday night,
- Mostly sunny and a bit warmer Sunday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late at night,
- Mostly cloudy with a (40%) chance of AM showers, partly cloudy and a bit cooler with a (40%) chance of showers Monday afternoon, mostly cloudy with a (40%) chance of showers Monday night,
- Then a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Tuesday.
- highs 82-83 cooling to 79 Tuesday lows near 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 cloudy with isolated AM thunderstorms, just partly cloudy and a bit warmer this afternoon, mostly clear tonight,
- Partly cloudy Thursday, mostly cloudy with a slight (20%) chance of evening thunderstorms, a slight (20%) chance of showers late at night,
- Mostly cloudy and a bit cooler a slight (20%) chance of thunderstorms Friday, a slight (20%) chance of thunderstorms Friday night.
- highs 95-88 lows 63-62 .
- Mostly cloudy and a bit cooler with a slight (20%) chance of thunderstorms Saturday, partly cloudy with a slight (20%) chance of showers Saturday night,
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Sunday, mostly cloudy with a slight (20%) chance of showers at night,
- Mostly cloudy with a slight (20%) chance of AM showers, a bit cooler with a (30%) chance of showers and a slight (20%) chance of thunderstorms Monday afternoon, mostly cloudy with a (30%) chance of showers Monday night,
- Then mostly cloudy and a bit cooler with a (40%) chance of showers Tuesday.
highs 85-86 cooling to 82 Tuesday lows 59-60 cooling back to 59 Monday night. - (seasonal averages high 84 low 55).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with isolated AM coastal thunderstorms isolated afternoon coastal thunderstorms and a bit warmer this afternoon while mostly cloudy with isolated AM inland isolated thunderstorms and partly cloudy and a bit cooler inland this afternoon, mostly cloudy tonight,
- Mostly cloudy start, partly cloudy Thursday afternoon, mostly cloudy with a slight (20%) chance of showers at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Friday, then a slight (20%) chance of showers Friday night.
- highs 73-72 lows near 57.
- Mostly cloudy with a slight (20%) chance of AM thunderstorms, partly cloudy and a bit warmer with a slight (20%) chance of showers Saturday afternoon, mostly cloudy with a slight (20%) chance of showers Saturday night,
- Mostly cloudy with a slight (20%) chance of showers and a bit warmer Sunday, mostly cloudy with a slight (20%) chance of showers at night,
- Mostly cloudy and a bit cooler with a (40%) chance of showers Monday and Monday night,
- Then mostly cloudy with a good (50%) chance of showers Tuesday.
- highs 73-74 cooling back to 73 Monday and Tuesday lows near 56.
- (seasonal averages high 67 low 53). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with AM haze and areas of smoke with a (40%) chance of showers and a slight (20%) chance of thunderstorms, mostly sunny and a bit warmer with areas of smoke and a (40%) chance of showers and a slight (20%) chance of thunderstorms this afternoon, partly cloudy with areas of smoke and a slight (20%) chance of evening thunderstorms, mostly cloudy with areas of smoke late tonight,
- Mostly sunny and a bit warmer with a slight (20%) chance of thunderstorms Thursday afternoon, mostly cloudy with a (40%) chance of showers and a slight (20%) chance of thunderstorms, a (40%) chance of showers late at night,
- A mix of clouds and sun and a bit cooler with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Friday, mostly cloudy with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Friday night.
- snow level above 8,000 ft. today, free air freezing level 14,000 ft. tonight, 15,000 ft. falling to 14,000 ft. Thursday afternoon, then snow level above 8,000 ft. Thursday night through Friday night.
- highs 82-83 cooling to 76 Friday lows 56-52.
- A mix of clouds and sun and a bit cooler with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Saturday, mostly cloudy with a (40%) chance of evening showers, partly cloudy with a (40%) chance of showers Saturday night,
- Mostly sunny and a bit cooler with a slight (20%) chance of showers Sunday, mostly cloudy with a slight (20%) chance of showers at night,
- A mix of of clouds and sun and a bit cooler with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Monday, mostly cloudy with a good (50%) chance of showers Monday night,
- Then a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Tuesday.
- then snow level above 8,000 ft. Saturday through Tuesday.
- highs 70-62 lows 49-46.
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