An Upper Level High Pressure Ridge in the Southwest combines with surface High Pressure moving northward along the coast will switch us to onshore airflow which will slowly cool us and clear out the wildfire smoke in the Willamette Valley.. The graphics for days 1-3 show no frontal systems pushing through Oregon. The graphics for days 3-7 Sunday through Thursday show a cold frontal system pushing through the Pacific Northwest Sunday and one falling apart as it moves in Tuesday.
ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT UNTIL 8 PM TONIGHT FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE WESTERN KLAMATH NATIONAL FOREST, THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY, AND THE EASTERN ROGUE VALLEY.
- A RED FLAG WARNING IS IN EFFECT FROM 11 AM FRIDAY UNTIL 11 PM SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE WARM SPRINGS RESERVATION.
- A RED FLAG WARNING IS IN EFFECT FROM 11 AM FRIDAY UNTIL 11PM SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON.
- A FIRE WEATHER WATCH IS IN EFFECT FROM 11 AM FRIDAY UNTIL 11 PM SATURDAY FOR FOR WIND AND RELATIVE HUMIDITY FOR THE LOWER COLUMBIA BASIN OF OREGON.
- A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE LOWER COLUMBIA COLUMBIA RIVER AND THE COWLITZ COUNTY LOWLANDS.
- A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE TUALATIN VALLEY, PORTLAND WEST HILLS AND CHEHALEM MOUNTAIN, INNER PORTLAND METRO, EAST PORTLAND METRO, SOUTHEAST PORTLAND METRO, WEST CENTRAL WILLAMETTE VALLEY, BENTON COUNTY LOWLANDS, AND THE LANE COUNTY LOWLANDS.
- A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM FRIDAY FOR CENTRAL DOUGLAS COUNTY.
- A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY AND LAKE COUNTY, AND CENTRAL AND EASTERN LAKE COUNTY.
- A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM FRIDAY FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM FRIDAY FOR THE SISKIYOU MOUNTAINS AND THE SOUTHERN OREGON CASCADES.
- A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM MDT SATURDAY FOR BAKER COUNTY, HARNEY COUNTY, AND MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR CLACKAMAS, MARION, AND MULTNOMAH COUNTY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 12 PM FRIDAY FOR HOOD RIVER AND LANE COUNTY.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 2 PM FRIDAY FOR JOSEPHINE AND KLAMATH COUNTY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL FURTHER NOTICE FOR CROOK, DESCHUTES, GILLIAM, GRANT, JEFFERSON, MORROW, SHERMAN, UMATILLA, UNION, WALLOWA, WASCO COUNTIES, AND WHEELER COUNTIES.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 2 PM FRIDAY FOR JACKSON COUNTY.
HEALTH ADVISORIES:
- 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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SKI REPORT:
Willamette Pass Ski: IT’S NOT OFFICIAL, BUT DUE TO THE LATENESS OF THE SEASON AND THE MILD WEATHER TREND THERE IS VIRTUALLY NO CHANCE OF GETTING ENOUGH SNOWFALL TO ALLOW OPENING FOR SKIING. CONSIDER IT CLOSED FOR THE SEASON.
Hoodoo Ski: IS CLOSED FOR THE SEASON.
Mt. Ashland Ski: IS CLOSED FOR THE SEASON.
Be sure to check their web pages for the latest updates.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Clear with areas of smoke tonight,
- Sunny and a bit cooler (Still Very Warm) with patchy early afternoon smoke Friday, mostly clear Friday night,
- Sunny and a bit cooler (Still Warm) Saturday, clear at night,
- Sunny and a bit cooler Sunday, then mostly clear Sunday night.
- lows 58-59 cooling to 57 Saturday night highs 94-92.
- Sunny and a bit cooler Monday, clear Monday night,
- Sunny and a bit cooler Tuesday and Wednesday, mostly clear both nights,
- Then sunny Thursday.
- highs 92-85 warming to lows 56-55. (seasonal averages high 86 low 52)
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EUGENE-SPRINGFIELD POLLEN COUNT:`
GRASS POLLEN: ABSENT (0)
TREE POLLEN: ABSENT (0)
WEEDS: ABSENT (0)
Measured 8.5.26
NOTE: DATA FROM OREGON ALLERGY ASSOCIATES.
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Forecast for the Umpqua Valley including Roseburg:
- Clear with areas of smoke tonight,
- Lingering patchy AM smoke, sunny and a bit cooler, (Still Hot), Friday, clear Friday night,
- Sunny and a bit cooler (still very warm) Saturday, clear at night,
- Sunny and a bit cooler Sunday, clear Sunday night.
- lows 59-57 highs 94-89.
- Sunny and a bit cooler Monday, clear Monday night,
- Sunny and a bit cooler Tuesday and Wednesday, mostly clear both nights,
- Then sunny Thursday.
- highs 87-85 lows near 57. (seasonal averages high 87 low 58).
- Mostly cloudy late tonight,
- AM clouds, sunny and a bit cooler Friday, mostly cloudy Friday night,
- Mostly sunny and a bit warmer Saturday, partly cloudy at night,
- Sunny and a bit warmer Sunday, then partly cloudy Sunday night.
- lows 54-53 highs 62-65.
- Sunny and a bit warmer Monday, mostly clear Monday night,
- Mostly sunny Tuesday, partly cloudy at night,
- Then mostly sunny Wednesday and Thursday, partly cloudy Wednesday night.
- lows 54-56 highs near 65. (seasonal averages high 67 low 54).
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly clear with areas of evening smoke, patchy smoke late tonight,
- Sunny with patchy smoke Friday, patchy evening smoke, just mostly clear late Friday night,
- Sunny and a bit cooler Saturday, mostly clear at night,
- Sunny and a bit cooler Sunday, mostly clear Sunday night.
- free air freezing level above 16,000 ft. tonight, above 16,000 ft. Friday, 16,000 ft, Friday night through Sunday night,
- lows 55-47 highs 83-77.
- Sunny and a bit cooler Monday and Tuesday, mostly clear both nights,
- Sunny and a bit cooler Wednesday, mostly clear Wednesday night,
- Then sunny Thursday.
- free air freezing level 16,000 ft. Monday and Monday night, then 15,000 ft. Tuesday through Thursday,
- highs 76-72 lows 46-45.