Aug
27.
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 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 COUNTIES.
- A RED FLAG WARNING IS IN EFFECT THROUGH THIS EVENING FOR OUTFLOW WINDS AND HIGH INSTASBILITY FOR THE MT. HOOD NATIONAL FOREST REGION.
- A RED FLAG WARNING IS IN EFFECT THROUGH THIS EVENING FOR OUTFLOW WINDS AND HIGH INSTASBILITY FOR THE NORTHERN WILLAMETTE NATIONAL FOREST AND THE SOUTHERN WILLAMETTE NATIONAL FOREST.
- A FLASH FLOOD WATCH IS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT FOR THE OREGON LOWER TREASURE VALLEY.
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 54 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 56 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 54 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 tonight,
- Sunny and a bit cooler Thursday, mostly clear Thursday night,
- Mostly sunny and a bit cooler Friday, partly cloudy in the evening, mostly clear late at night,
- Mostly sunny and a bit cooler Saturday, mostly clear in the evening, then partly cloudy late Saturday night.
- lows 56-53 warming to 55 Saturday night highs 89-84.
- Mostly sunny a bit warmer Sunday, mostly clear Sunday night,
- Sunny and a bit warmer Monday (Labor Day), mostly clear at night,
- Sunny and a bit warmer Tuesday, mostly clear Tuesday night,
- Then mostly sunny and a bit warmer Wednesday.
- highs 85-90 lows 54-56. (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: Mostly Sunny 78 degrees warming to 86 by the end of the game.
Beavers vs. Cal Golden Bears at Reser Stadium, Game Time 7:30 PM- Preliminary forecast: Partly Cloudy 76 degrees then cooling as the game progresses.
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Forecast for the Umpqua Valley including Roseburg:
- Mostly clear with patchy fog late tonight,
- Areas of AM fog, sunny and a bit cooler Thursday, mostly clear Thursday night,
- Partly cloudy and a bit cooler Friday, mostly clear at night,
- Partly cloudy and a bit cooler Saturday, then partly cloudy Saturday night.
- lows 60-57 warming to 59 Saturday night highs 93-87.
- Partly cloudy Sunday, mostly clear Sunday night,
- Mostly sunny and a bit warmer Monday (Labor Day), mostly clear at night,
- Mostly sunny and a bit warmer Tuesday, mostly clear Tuesday night,
- Some AM clouds, then sunny and a bit warmer Wednesday afternoon.
- highs 87-92 lows 58-62.
- (seasonal averages high 84 low 56).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy with patchy evening coastal fog and mostly cloudy with areas of coastal fog late tonight while partly cloudy with inland patchy late evening fog and mostly cloudy with areas of inland fog late tonight,
- AM clouds with areas of areas of dense coastal fog while areas of inland AM fog, sunny and a bit warmer Thursday afternoon, partly cloudy with patchy evening fog, mostly cloudy with areas of fog late Thursday night,
- Mostly cloudy with areas of AM fog, partly cloudy and a bit warmer Friday afternoon, partly cloudy with patchy evening coastal fog and areas of coastal fog late at night while patchy inland fog late at night,
- AM clouds with areas of fog, sunny and a bit warmer Saturday afternoon, then partly cloudy Saturday night.
- lows 56-53 warming back to 56 Saturday night highs 72-75.
- Partly cloudy and a bit warmer Sunday, partly cloudy Sunday night,
- Partly cloudy and a bit cooler Monday (Labor Day), partly cloudy at night,
- Then partly cloudy Tuesday and Wednesday, partly cloudy Tuesday night.
- highs 76-75 lows 55-56.
- (seasonal averages high 68 low 53). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly clear and hazy with areas of smoke late tonight,
- Sunny with areas of smoke and a bit cooler Thursday with afternoon haze, mostly clear with areas of smoke late Thursday night,
- Sunny and a bit warmer Friday, partly cloudy in the evening, clear late at night,
- Mostly sunny and a bit cooler Saturday, partly cloudy in the evening, then mostly clear Saturday night.
- 13,000 ft. tonight, then 14,000 ft. Thursday through Saturday night.
- lows 52-47 highs 78-79 cooling to 74 Saturday.
- Sunny Sunday, mostly clear Sunday night,
- Sunny and a bit warmer Monday (Labor Day), mostly clear at night,
- Then sunny and a bit warmer Tuesday and Wednesday, partly cloudy Tuesday evening, mostly clear late Tuesday night,
- free air freezing level 14,000 ft. Sunday through Tuesday, then 15,000 ft. Tuesday night and Wednesday.
- highs 74-80 lows 48-53.
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