Aug
01.
Here is my weekly weather quiz question. “What is “Smog?”
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An Upper Level High Pressure Ridge (“Arch” shape) is moving closer to the coast to warm us up. The graphics for days 1-3 show no frontal systems pushing through Oregon. The graphics for days 3-7 Sunday through Thursday show no frontal systems moving through the Pacific Northwest through the period.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 57 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 134 in the Unhealthy for Sensitive Groups category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 68 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 FROM 11 AM UNTIL 9 PM FRIDAY 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 FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR THE SOUTHERN OREGON CASCADES.
- A FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING 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 HEAT ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE LOWER COLUMBIA RIVER, THE TUALATIN VALLEY, PORTLAND WEST HILLS AND CHEHALEM MOUNTAIN, INNER PORTLAND METRO, EAST PORTLAND METRO, OUTER SOUTHEAST PORTLAND METRO, THE WEST CENTRAL WILLAMETTE VALLEY, THE EAST CENTRAL WILLAMETTE VALLEY, THE BENTON COUNTY LOWLANDS, THE LINN COUNTY LOWLANDS, THE LANE COUNTY LOWLANDS, THE WEST COLUMBIA RIVER GORGE I-84 CORRIDOR, THE UPPER HOOD RIVER VALLEY, THE CENTRAL COLUMBIA RIVER GORGE I-84 CORRIDOR.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 8 PM FRIDAY 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.
- A HEAT ADVISORY IS IN EFFECT FROM MIDNIGHT FRIDAY UNTIL 9 PM 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 FRIDAY 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.
- A FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR LIGHTNING FOR THE BURNS BLM, THE VALE BLM, AND THE BAKER VALLEY.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM NOON MDT FRIDAY UNTIL MIDNIGHT MDT SATURDAY FOR HARNEY, BAKER, MALHEUR COUNTIES, AND THE OREGON LOWER TREASURE VALLEY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON FRIDAY FOR WILDFIRE SMOKE FOR THE LANE COUNTY CASCADE FOOTHILLS AND AND THE CASCADES OF LANE COUNTY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON FRIDAY FOR WILDFIRE SMOKE FOR JACKSON, 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 FRIDAY 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:
- Mostly clear tonight,
- Mostly sunny and a bit cooler Friday, partly cloudy Friday night,
- A mix of clouds and sun and a bit cooler Saturday, partly cloudy in the evening, mostly clear late at night,
- Sunny and a bit warmer Sunday, then mostly clear Sunday night.
- lows 60-56 highs 94-93 warming back to 94 Sunday.
- Sunny and a bit cooler Monday, mostly clear Monday night,
- Sunny and a bit cooler Tuesday, mostly clear at night,
- Then sunny and a bit warmer Wednesday and Thursday, mostly clear Wednesday night,
- 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:
- Mostly clear patchy fog late tonight,
- Partly cloudy and hazy with patchy AM fog, sunny and hazy and a bit cooler Friday afternoon, partly cloudy with patchy fog Friday night,
- AM clouds with patchy fog, partly cloudy Saturday, partly cloudy at night,
- Mostly sunny and a bit warmer Sunday, then mostly clear Sunday night.
- lows 65-62 highs 95-97.
- Mostly sunny and a bit cooler Monday, mostly clear Monday night,
- Mostly sunny Tuesday and and a bit warmer Wednesday, mostly clear both nights,
- Then mostly sunny and a bit warmer Thursday.
- highs 93-95 lows near 60 (seasonal averages high 88 low 58)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear with patchy evening fog, mostly cloudy with areas of fog late tonight,
- Mostly cloudy with areas of AM fog, partly cloudy and a bit warmer with patchy dense fog Friday afternoon, mostly cloudy with patchy fog Friday night,
- Mostly cloudy with patchy AM fog, partly cloudy Saturday afternoon, partly cloudy with patchy fog at night,
- Patchy AM and late night fog, partly cloudy Sunday, then partly cloudy Sunday night.
- lows 57-55 highs 68-72.
- Mostly cloudy with areas of AM fog, sunny Monday afternoon, partly cloudy in the evening, mostly cloudy late Monday night,
- Partly cloudy Tuesday, partly cloudy at night,
- Partly cloudy start, sunny and a bit warmer Wednesday afternoon, Wednesday night,
- Then partly cloudy Thursday.
- 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 clear tonight,
- Sunny and a bit cooler Friday, partly cloudy in the evening, mostly cloudy late Friday night,
- Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy and a bit cooler with a slight (20%) chance of showers Saturday afternoon, mostly cloudy with a slight (20%) chance of evening showers, just partly cloudy late at night,
- Sunny and a bit warmer Sunday, then mostly clear Sunday night.
- free air freezing level 16,000 ft. rising to above 16,000 ft. late tonight, above 16,000 ft. Friday afternoon, 16,000 ft. Friday night, snow level above 8,000 ft. Saturday and Saturday night, then free air freezing level 15,000 ft. Sunday and Sunday night.
- lows near 56 highs near 85-82 warming to 83 Sunday.
- Sunny and a bit cooler Monday and Tuesday, mostly clear both nights,
- Sunny and a bit warmer Wednesday, mostly clear in the evening, partly cloudy late Wednesday night,
- Then sunny Thursday.
- free air freezing level 16,000 ft. Monday through Tuesday, then 16,000 ft. Tuesday night through Thursday.
- highs 82-78 warming to 82 Thursday lows 52-49 warming back to 52 Wednesday night.
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