Sep
21.
An Upper Level Low Pressure Trough brings back rain chances with onshore airflow. The graphics for days 1-3 show a pre-Fall cold frontal system pushing through the Pacific Northwest late tonight and Sunday. The graphics for days 3-7 Wednesday through Sunday show a cold front pushing through next Wednesday and Thursday, then another front moving through next Sunday.
Note: Autumn officially begins with the Autumnal Equinox at 11: 19 AM Monday.
ADVISORIES:
- A FROST ADVISORY IS IN EFFECT FROM 8 PM TONIGHT UNTIL 8 AM MONDAY FOR THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, AND THE KLAMATH BASIN.
HEALTH ADVISORIES:
- A RECREATIONAL HEALTH ADVISORY IS IN EFFECT DUE TO A FOR WAPATO MARSH AT AT OAKS BOTTOM WILDLIFE REFUGE 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 WAPATO MASRSH 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 UPPER KLAMATH LAKE IN KLAMATH COUNTY E 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 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 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 RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR HELLS CANYON RESERVOIR IN BAKER AND WALLOWA COUNTIES 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 HELLS CANYON RESERVOIR 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 FOR OCHOCO LAKE IN CROOK 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 OCHOCO 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 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 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 BULLY CREEK RESERVOIR IN MALHEUR 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 BULLY CREEK RESERVOIR 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 FOR THIEF VALLEY RESERVOIR IN BAKER AND UNION COUNTIES 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 THIEF VALLEY RESERVOIR 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 FOR UPPER KLAMATH WILDLIFE REFUGE 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 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 UPPER KLAMATH WILDLIFE REFUGE 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 PRESENCE OF CYANOBACTERIA FOR THE SOUTH UMPQUA RIVER. *PEOPLE SHOULD AVOID POOLS OF WATER IN BEDROCK ALONG THE RIVER. AVOID WATER CONTACT, DO NOT DRINK THE WATER, AND KEEP CHILDREN AND PETS AWAY FROM THE POOLS OF WATER.
- 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 43 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 36 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 39 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: 0 ABSENT
TREES: 0 ABSENT
WEEDS: 0 ABSENT
Measured 9.16.25
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 cloudy with AM rain likely (70%), mostly cloudy and a bit cooler with a slight (20%) chance of rain this afternoon, partly cloudy this evening, mostly clear late tonight,
- Sunny and a bit warmer Monday (11:19 AM Autumnal Equinox-Fall begins), clear at night,
- Sunny and a bit warmer Tuesday, then clear Tuesday night.
- highs 70-86 lows 47-50.
- Sunny and a bit cooler Wednesday, mostly clear Wednesday night,
- Mostly sunny and a bit cooler Thursday, mostly clear at night,
- Mostly sunny Friday, partly cloudy Friday night,
- Then mostly sunny and a bit cooler Saturday.
- highs 84-77 lows 50-48 warming back to 50 Friday night (seasonal averages high 77 low 47).
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YOUR SATURDAY COLLEGE FOOTBALL WEATHER FORECAST:
SATURDAY SEPTEMBER 20TH:
Ducks vs Beavers Rivalry game (formerly known as The Civil War Game) at Autzen Stadium Game Time: 12:00 PM – The Ducks defeated the Beavers soundly 41-7.
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Forecast for the Umpqua Valley including Roseburg:
- Patchy AM and late night fog, mostly cloudy and cooler with a (30%) chance of showers this afternoon, partly cloudy this evening, mostly clear with patchy fog late tonight,
- Patchy AM and late night fog, sunny and warmer Monday afternoon (11:19 AM Autumnal Equinox-Fall begins), clear at night,
- Sunny and warmer Tuesday, then clear Tuesday night.
- highs 73-93 lows 54-53 warming to 57 Tuesday night.
- Mostly sunny and a bit cooler Wednesday, mostly clear Wednesday night,
- Mostly sunny and a bit cooler Thursday, mostly clear at night,
- Mostly sunny Friday, mostly clear Friday night,
- Then partly cloudy and a bit cooler with a slight (2o%) chance of showers Saturday.
- highs 89-82 lows 56-53 warming to 54 Friday night.
- (seasonal averages high 79 low 51).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with patchy AM fog with coastal showers likely (70%) and just mostly cloudy at the shore and slightly warmer this afternoon while mostly cloudy with patchy fog and a (40%) chance of inland showers and a bit warmer today, partly cloudy this evening, mostly clear with patchy fog late tonight,
- Patchy AM fog, sunny and a bit warmer Monday (11:19 AM Autumnal Equinox-Fall begins), clear at night,
- Sunny and a bit warmer Tuesday, then mostly clear Tuesday night.
- highs 70-79 lows 52-55.
- Mostly sunny and a bit cooler Wednesday, mostly clear with patchy fog and a bit cooler Wednesday night,
- Patchy AM and late night fog, mostly sunny and a bit cooler Thursday, mostly clear in the evening, partly cloudy late at night,
- Some AM clouds with patchy fog, sunny Friday afternoon, mostly clear in the evening, partly cloudy late Friday night,
- Mostly cloudy with patchy AM fog, then partly cloudy with a slight (20%) chance of showers Saturday afternoon.
- highs 73-72 lows 53-52 warming back to 53 Friday night. (seasonal averages high 66 low 51) _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- AM clouds and sun with a good (50%) chance of showers, mostly cloudy and a bit cooler with a good (50%) chance of rain this afternoon, mostly cloudy with a slight (20%) chance of evening rain, becoming mostly clear late tonight,
- Sunny and warmer Monday (11:19 AM Autumnal Equinox-Fall begins), clear at night,
- Mostly sunny and a bit warmer Tuesday, then clear Tuesday night.
- snow level above 8,000 ft. today, 7,000 ft. tonight, free air freezing level 15,000 ft. Monday, then 16,000 ft. Monday night through Tuesday night.
- highs 59-78 lows 37-49.
- Sunny and a bit cooler Wednesday, mostly clear Wednesday night,
- Sunny a bit cooler Thursday, mostly clear at night,
- Sunny and a bit cooler Friday, mostly clear in the evening, partly cloudy late Friday night,
- Mostly sunny and a bit cooler with a slight (20%) chance of rain Saturday.
- free air freezing level 16,000 ft. Wednesday, 15,000 ft. Wednesday night through Friday, 14,000 ft. Friday night, then snow level above 8,000 ft. Saturday.
- highs 77-68 lows 47-46.
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