Aug
26.
An Upper Level Low Pressure Trough (“U” shape) will give us onshore airflow to keep us in cooler temperatures for a while. 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 in between Saturday and next Sunday.
ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON AND THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON.
- A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR THUNDERSTORMS AND HIGH INSTABILITY FOR THE NORTHERN WILLAMETTE NATIONAL FOREST AND THE SOUTHERN WILLAMETTE NATIONAL FOREST.
- A RED FLAG WARNING IS IN EFFECT FOR LIGHTNING ON DRY FUELS UNTIL 9 PM TONIGHT FOR THE UMPQUA NATIONAL FOREST, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY C.OUNTIES.
- A RED FLAG WARNING IS IN EFFECT FOR LIGHTNING ON DRY FUELS FROM 1 PM UNTIL 9 PM WEDNESDAY FOR THE UMPQUA NATIONAL FOREST, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES
- A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING ON DRY FUELS UNTIL 9 PM TONIGHT FOR THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY, THE SISKIYOU MOUNTAINS, AND THE EASTERN ROGUE VALLEY.
- A FLASH FLOOD WATCH IS IN EFFECT THROUGH LATE TONIGHT FOR HARNEY COUNTY .
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 73 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 58 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 71 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: 3 LOW
TREES: 0 ABSENT
WEEDS: 0 ABSENT
Measured 8.25.25
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 with evening haze, partly cloudy late tonight,
- Sunny and a bit cooler Wednesday, mostly clear Wednesday night,
- Sunny Thursday, mostly clear at night,
- Mostly sunny and a bit warmer Friday, then partly cloudy Friday night.
- lows 60-54 highs 89-90.
- Mostly sunny and a bit cooler Saturday, mostly clear in the evening, partly cloudy late Saturday night,
- Mostly sunny a bit warmer Sunday, mostly clear at night,
- Sunny and a bit warmer Monday (Labor Day), mostly clear Monday night,
- Then sunny and a bit warmer Tuesday.
- highs 84-89 lows 55-54 warming back to 55 Monday night. (seasonal averages high 83 low 51).
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YOUR SATURDAY COLLEGE FOOTBALL WEATHER FORECAST:
SATURDAY AUGUST 30TH:
Ducks vs. Montana State at Autzen Stadium, Game Time 1:00 pm Forecast: Preliminary forecast: Sunny 77 degrees warming to 85 by the end of the game.
Beavers vs. Cal Golden Bears at Reser Stadium, Game Time 7:30 PM- Preliminary forecast: Clear 75 degrees then cooling as the game progresses.
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Forecast for the Umpqua Valley including Roseburg:
- Mostly clear with haze and patchy smoke and a slight (20%) chance of evening thunderstorms, mostly clear and hazy late tonight,
- Sunny and hazy with a slight (20%) chance of thunderstorms and a bit cooler Wednesday afternoon, mostly clear Wednesday night,
- Sunny and a bit cooler Thursday, mostly clear at night,
- Partly cloudy Friday, then mostly clear Friday night.
- lows 63-58 highs 92-93 cooling back to 92Friday.
- Mostly sunny and a bit cooler Saturday, mostly clear Saturday night,
- Some AM clouds, sunny Sunday afternoon, mostly clear at night,
- Mostly sunny and a bit cooler Monday (Labor Day), mostly clear Monday night,
- Some AM clouds, then sunny Tuesday afternoon.
- highs 88-87 warming to 92 Tuesday lows 59-60.
- (seasonal averages high 85 low 56).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy and hazy this evening, mostly cloudy and hazy late tonight,
- Mostly cloudy with AM inland haze start while mostly cloudy with coastal AM haze, sunny and a bit warmer with coastal haze Wednesday afternoon, partly cloudy with evening coastal haze, mostly cloudy late Wednesday night,
- AM clouds, sunny Thursday afternoon, mostly clear in the evening, partly cloudy late at night,
- Mostly cloudy start, partly cloudy and a bit warmer Friday afternoon, then partly cloudy Friday night.
- lows 58-53 highs 74-75.
- Partly cloudy Saturday through Sunday,
- Partly cloudy Monday (Labor Day), partly cloudy Monday night,
- Then partly cloudy Tuesday.
- highs near 75 lows near 55.
- (seasonal averages high 68 low 53). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Partly cloudy with evening haze, a slight (20%) chance of thunderstorms, clear with areas of smoke and hazy late tonight,
- Sunny and hazy with areas of smoke and a bit cooler with slight (20%) chance of showers Wednesday afternoon, mostly clear and hazy with areas of smoke late Wednesday night,
- Sunny and a bit warmer Thursday, mostly clear at might,
- Sunny and a bit warmer Friday, then partly cloudy Friday night.
- free air freezing level 14,000 ft. tonight, 13,000 ft. Wednesday morning, 13,000 ft. rising to 14,000 ft. late Wednesday night, then 14,000 ft. Thursday through Friday night.
- lows 55-52 highs 77-74.
- Sunny and a bit cooler Saturday, partly cloudy in the evening, mostly clear Saturday night,
- Sunny and a bit cooler Sunday, mostly clear at night,
- Sunny and a bit warmer Monday (Labor Day), mostly clear Monday night,
- Then sunny and a bit warmer Tuesday.
- free air freezing level 14,000 ft. Saturday through Tuesday.
- highs 77-75 lows 50-49 warming back to 50 Monday night.
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