Aug
05.
An Upper Level High Pressure Ridge off the coast brings lots of heat and some wildfire smoke due to offshore airflow (west to east). The graphics for days 1-3 show a cold frontal system pushing through Oregon Saturday. The graphics for days 3-7 Friday through Tuesday show a cold frontal system pushing through the Pacific Northwest through the period until a front moves through Sunday and Monday.
ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR THE UMPQUA BASIN AND THE UMPQUA NATIONAL FOREST, AND THE SISKIYOU MOUNTAINS…
- A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM TONIGHT 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 2 PM UNTIL 8 PM THURSDAY 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 FIRE WEATHER WATCH IS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING FOR FOR WIND AND RELATIVE HUMIDITY FOR THE LOWER COLUMBIA BASIN OF OREGON.
- A FIRE WEATHER WATCH IS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE WARM SPRINGS RESERVATION.
- A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE NORTH OREGON COAST RANGE LOWLANDS, THE CENTRAL OREGON COAST RANGE LOWLANDS.
- A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM THURSDAY FOR THE LOWER COLUMBIA COLUMBIA RIVER, 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 TONIGHT FOR CENTRAL DOUGLAS COUNTY.
- A HEAT ADVISORY IS IN EFFECT FROM 11 AM TODAY UNTIL 11 PM THURSDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY AND LAKE COUNTY, AND CENTRAL AND EASTERN LAKE COUNTY.
- A HEAT ADVISORY IS IN EFFECT FROM 2 PM MDT 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 NOON TODAY FOR BAKER COUNTY, HARNEY COUNTY, AND MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 11 AM THURSDAY FOR BENTON, CLACKAMAS, COLUMBIA, HOOD RIVER, LANE, LINN, MARION, MULTNOMAH, POLK, WASHINGTON, AND YAMHILL 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 10 PM THURSDAY 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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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 260 in the Unhealthy category measuring Particulate Matter.
Oakridge: The Air Quality Index is 156 in the Unhealthy category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 143 in the Unhealthy for Sensitive Groups category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Clear with widespread evening smoke, clear late tonight,
- Sunny and slightly cooler (Still Hot) with areas of smoke Thursday, patchy evening smoke, mostly clear late Thursday night,
- Sunny and a bit cooler (Still Very Warm) Friday, clear at night,
- Sunny and a bit cooler (Still Warm) Saturday, then clear Saturday night.
- lows 59-58 warming back to 59 Friday night cooling to 57 Saturday night highs 94-92.
- Sunny and a bit cooler Sunday, mostly clear Sunday night,
- Sunny Monday, clear at night,
- Sunny and slightly cooler Tuesday, mostly clear Tuesday night,
- Then sunny and a bit cooler Wednesday.
- 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 widespread smoke late tonight,
- Widespread AM smoke, sunny and a bit cooler, still Hot Thursday, clear with patchy evening smoke, clear with widespread haze late Thursday night,
- Sunny and a bit warmer, Hot, Friday, then clear Friday night,
- Sunny and a bit cooler (still very warm) Saturday, then clear Saturday night,
- lows 63-62 highs 99-101 cooling back to 99 Thursday.
- Sunny and a bit cooler Sunday, clear Sunday night,
- Sunny and a bit cooler Monday, clear at night,
- Sunny and a bit cooler Tuesday, mostly clear Tuesday night,
- Then sunny and a bit cooler Wednesday.
- highs 96-86 lows 62-56. (seasonal averages high 87 low 58).
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Forecast for the South Oregon Coast Including Coos Bay and North Bend:
- Sunny and a bit cooler with patchy AM and early afternoon smoke, partly cloudy late this afternoon, becoming mostly cloudy late tonight,
- Mostly sunny and a bit cooler Thursday, mostly cloudy Thursday night,
- Mostly sunny and a bit warmer Friday, partly cloudy at night,
- Sunny and a bit warmer Saturday, then partly cloudy Saturday night.
- lows 54-55 cooling to 53 Friday night highs 63-67.
- Sunny and a bit cooler Sunday, partly cloudy at night,
- Sunny and a bit cooler Monday, partly cloudy Monday night,
- Mostly sunny and a bit warmer Tuesday, partly cloudy Tuesday night,
- Then mostly sunny and a bit cooler Wednesday.
- highs 68-65 lows 55-54 . (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 smoke tonight,
- Areas of AM smoke, sunny with patchy smoke Thursday afternoon, mostly clear with patchy smoke Thursday night,
- Sunny and a bit cooler Friday, mostly clear at night,
- Sunny and a bit cooler Saturday, then mostly clear Saturday night.
- free air freezing level above 16,000 ft. tonight 16,000 ft. Friday through Saturday night,
- lows 55-49 highs 86-80.
- Sunny and a bit cooler Sunday, mostly clear Sunday night,
- Sunny and a bit cooler Monday, mostly clear at night,
- Then sunny and a bit cooler Tuesday, mostly clear Tuesday night,
- Then sunny and a bit cooler Wednesday.
- free air freezing level 16,000 ft. Sunday through Monday night, 15,000 ft. Tuesday,
- highs 76-73 lows 47-46.
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