Aug
02.
Here is my weekly weather quiz question. “What is “Smog?”
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An Upper Level High Pressure Ridge (“Arch” shape) brought heat to the Pacific Northwest. A weak disturbance helps to drop temperatures. The graphics for days 1-3 show the frontal system that pushes through Oregon today and Saturday for cooling. The graphics for days 3-7 Monday through Friday show no frontal systems moves through the Pacific Northwest through the period.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 53 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 109 in the Unhealthy for Sensitive Groups 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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ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM TODAY FOR DRY AND UNSTABLE CONDITIONS FOR THE CENTRAL MOUNTAINS OF OREGON, THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS, AND THE CENTRAL BLUE MOUNTAINS.
- A RED FLAG WARNING IS IN EFFECT FROM 11 AM UNTIL 11 PM SATURDAY FOR ABUNDANT LIGHTNING ON DRY FUELS FOR THE UMPQUA NATIONAL FOREST, THE KLAMATH BASIN AND THE FREMONY-WINEMA NATIONAL FOREST, THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND AND WESTERN HARNEY COUNTY.
- A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR DRY AND UNSTABLE CONDITIONS FOR THE CENTRAL MOUNTAINS OF OREGON, THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS, AND THE CENTRAL BLUE MOUNTAINS.
- A RED FLAG WARNING IS IN EFFECT FROM 3 PM MDT SATURDAY UNTIL 6 AM MDT SUNDAY FOR LIGHTNING FOR THE BURNS BLM, THE VALE BLM, AND THE BAKER VALLEY.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 8 PM TONIGHT FOR THE EASTERN COLUMBIA RIVER OF OREGON, WALLOWA COUNTY, THE JOHN DAY BASIN, THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, AND THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL MIDNIGHT TONIGHT FOR THE OREGON LOWER TREASURE VALLEY.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM 2 PM SATURDAY UNTIL 7 AM SUNDAY FOR ABUNDANT LIGHTNING FOR THE WALLOWA DISTRICT.
- A HEAT ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL MIDNIGHT SATURDAY FOR THE OREGON LOWER TREASURE VALLEY.
- A HEAT ADVISORY IS IN EFFECT UNTIL 8 AM SATURDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- A HEAT ADVISORY IS IN EFFECT UNTIL 8 PM TONIGHT FOR THE GRANDE RONDE VALLEY, THE NORTHERN BLUE MOUNTAINS OF OREGON, THE SOUTHERN BLUE MOUNTAINS OF OREGON, THE OCHOCO, THE JOHN DAY HIGHLANDS, THE EAST SLOPES OF THE OREGON CASCADES, NORTH CENTRAL OREGON, AND CENTRAL OREGON.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT FOR HARNEY, BAKER, MALHEUR COUNTIES, AND THE OREGON LOWER TREASURE VALLEY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL FURTHER NOTICE FOR ALL OF LANE COUNTY.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 11 AM MONDAY FOR DOUGLAS, KLAMATH, AND LAKE COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL FURTHER NOTICE FOR WILDFIRE SMOKE FOR DESCHUTES AND GRANT COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR WILDFIRE SMOKE FOR HARNEY AND MALHEUR COUNTIES.
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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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Partly cloudy this evening, mostly cloudy late tonight,
- Mostly cloudy with sun breaks and a bit cooler Saturday, mostly cloudy in the evening, partly cloudy late Saturday night,
- Sunny and a bit warmer Sunday, mostly clear at night,
- Sunny and a bit cooler Monday, mostly clear Monday night.
- lows 58-56 highs 94-93 warming back to 94 Sunday.
- Sunny and a bit cooler Tuesday, mostly clear Tuesday night,
- Sunny and a bit warmer Wednesday and Thursday, mostly clear Wednesday night,
- Then sunny Friday.
- highs 92-90 warming 94 Thursday lows 54-56. (seasonal averages high 86 low 52)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: LOW (3)
TREES: ABSENT (0)
WEEDS: LOW (3)
Last Measured 8.1.24
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Cloudy and hazy with a slight (20%) chance of thunderstorms with patchy fog late tonight,
- Mostly cloudy and hazy with a slight (20%) chance of thunderstorms Saturday, partly cloudy with evening haze, mostly clear and hazy late Saturday night,
- Mostly sunny and a bit warmer Sunday, mostly clear at night,
- Mostly sunny and a bit cooler Monday, then mostly clear Monday night.
- lows near 62 highs 95-97.
- Mostly sunny Tuesday, mostly clear Tuesday night,
- Mostly sunny and a bit warmer Wednesday, mostly clear at night,
- Mostly sunny and a bit warmer Thursday,mostly clear Thursday night,
- Then mostly sunny Friday.
- highs 93-95 lows near 60 (seasonal averages high 87 low 58)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with patchy coastal fog tonight while inland haze and patchy fog tonight,
- Mostly cloudy and hazy with patchy AM fog, mostly cloudy and hazy Saturday afternoon, partly cloudy with patchy evening fog, mostly cloudy with patchy fog late Saturday night,
- Mostly cloudy with patchy AM fog, sunny Sunday afternoon, mostly clear with patchy evening fog, mostly cloudy with patchy fog late at night,
- Mostly cloudy with areas of AM fog, sunny Monday afternoon, partly cloudy in the evening, then partly cloudy late Monday night.
- lows near 55 highs 68-72.
- Partly cloudy Tuesday, partly cloudy Tuesday night,
- Partly cloudy and a bit warmer Wednesday, partly cloudy at night,
- Partly cloudy Thursday and in the evening, mostly cloudy late Thursday night,
- AM clouds, then sunny Friday afternoon.
- highs near 74 lows near 55. (seasonal average high 67 low 54)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy and hazy tonight,
- Mostly cloudy and hazy with a slight (20%) chance of thunderstorms and a bit cooler with a slight (20%) chance of thunderstorms Saturday afternoon with areas of smoke, mostly cloudy Saturday night,
- Sunny and a bit warmer with a slight (20%) chance of thunderstorms Sunday afternoon, mostly clear at night,
- Sunny and a bit cooler Monday, then mostly clear Monday night.
- free air freezing level 16,000 ft. tonight, 16,000 ft. falling to 15,000 ft. Saturday afternoon, then 15,000 ft. Saturday night through Monday night.
- lows 57-55 highs near 85-82 warming to 83 Sunday.
- Sunny and a bit cooler Tuesday, mostly clear Tuesday night,
- Sunny and a bit warmer Wednesday, mostly clear in the evening, partly cloudy late at night,
- Sunny Thursday, mostly clear Thursday night,
- Then sunny Friday.
- free air freezing level 15,000 ft. Tuesday, 16,000 ft. Tuesday night through Thursday Wednesday night, then 15,000 ft. Thursday through Friday.
- highs 82-78 warming to 82 Thursday lows 52-49 warming back to 52 Wednesday night.