Jul
03.
Here is my weekly weather quiz question. “What is a “Sea Breeze?”
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An Upper Level High Pressure Ridge (“Arch” shape) strengthens again over us bringing more sunshine and heat. The graphics for days 1-3 show no frontal systems near the Pacific Northwest. The graphics for days 3-7 Saturday through Wednesday show no frontal systems sliding into the Pacific Northwest through the period. There will be a cold front to our northwest next Wednesday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 37 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 18 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM NOON THURSDAY UNTIL 11 PM SUNDAY FOR THE NORTH OREGON COAST RANGE LOWLANDS, THE CENTRAL OREGON COAST RANGE LOWLANDS, THE NORTHERN OREGON COAST RANGE, THE CENTRAL OREGON COAST RANGE, 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 OF OREGON ABOVE 500 FT., THE WEST COLUMBIA RIVER GORGE, THE I-84 CORRIDOR, THE UPPER HOOD RIVER VALLEY, THE CENTRAL COLUMBIA GORGE I-84 CORRIDOR, THE CLACKAMAS COUNTY CASCADE FOOTHILLS, THE CASCADE FOOTHILLS OF MARION AND LINN COUNTIES, AND THE LANE COUNTY CASCADE FOOTHILLS.
- A HEAT ADVISORY IS IN EFFECT FROM NOON THURSDAY UNTIL 11 PM SUNDAY FOR THE NORTH OREGON CASCADES, THE CASCADES OF MARION AND LINN COUNTIES, AND THE CASCADES OF LANE COUNTY.
- A HEAT ADVISORY IS IN EFFECT FROM NOON FRIDAY UNTIL 10 PM TUESDAY FOR THE JOHN DAY BASIN AND CENTRAL OREGON.
- A HEAT ADVISORY IS IN EFFECT FROM 8 AM THURSDAY, UNTIL 9 PM MONDAY FOR CENTRAL DOUGLAS COUNTY, AND THE EASTERN DOUGLAS COUNTY FOOTHILLS.
- A HEAT ADVISORY IS IN EFFECT FROM 8 AM THURSDAY UNTIL 9 PM MONDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM NOON FRIDAY UNTIL 10 PM TUESDAY NIGHT FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON, THE LOWER COLUMBIA BASIN OF OREGON, THE JOHN DAY BASIN, THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, NORTH CENTRAL OREGON, AND CENTRAL OREGON.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM 8 AM THURSDAY UNTIL 9 PM MONDAY FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- A RED FLAG WARNING IS IN EFFECT FROM 11 PM TONIGHT UNTIL 8 AM THURSDAY FOR GUSTY EAST WINDS AND POOR OVERNIGHT RELATIVE HUMIDITY RECOVERY FOR THE WESTERN SISKIYOU NATIONAL FOREST AND THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY.
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:
- Clear tonight,
- Sunny and warmer (Very Warm) Thursday (Independence Day), mostly clear Thursday night,
- Sunny and warmer (HOT!) Friday, clear at night,
- Sunny and a bit warmer (VERY HOT!) Saturday, then clear Saturday night.
- lows 53-67 highs 93-105.
- Sunny and a bit cooler (Still VERY HOT!) Sunday, clear Sunday night,
- Then sunny and a bit cooler (Still Very Warm) Monday, Tuesday, and Wednesday, clear each night.
- highs 104-93 lows 57-55 (seasonal averages high 80 low 50)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: MODERATE (19)
TREES: LOW (3)
WEEDS: LOW (2)
Measured 7.3.24
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Clear tonight,
- Sunny and a bit warmer Thursday (Independence Day), clear Thursday night,
- Then sunny and a bit warmer (VERY HOT) Friday and Saturday, clear both nights,
- lows 58-66 highs 98-108.
- Sunny and a bit cooler (Still VERY HOT) Sunday, clear Sunday night,
- Sunny and a bit cooler (STILL HOT) Monday, clear at night,
- Then sunny and a bit cooler Tuesday and Wednesday, clear Tuesday night.
- highs 107-94 lows 63-60. (seasonal average high 82 low 55)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear tonight,
- Sunny and a bit warmer Thursday (Independence Day), mostly clear Thursday night,
- Sunny and a bit warmer Friday, mostly clear at night,
- Mostly sunny Saturday, mostly clear Saturday night.
- lows 53-59 cooling to 56 Saturday night highs 79-86.
- Mostly sunny and a bit cooler Sunday, Monday, and Tuesday, mostly clear each night,
- Then mostly sunny Wednesday.
- highs 78-72 lows 54-52. (seasonal average high 65 low 53)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Clear tonight,
- Sunny and warmer Thursday (Independence Day), mostly clear Thursday night,
- Sunny and a bit warmer Friday, mostly clear at night,
- Sunny Saturday, then clear Saturday night.
- free air freezing level 15,000 ft. rising to 16,000 ft. late tonight, 16,000 ft. Thursday, above 16,000 ft. falling to 16,000 ft. late Thursday night, 16,000 ft. rising to above 16,000 ft. Friday afternoon, then above 16,000 ft. Friday night through Saturday night.
- lows 49-59 highs 85-92.
- Sunny Sunday, clear Sunday night,
- Sunny and a bit cooler Monday, clear at night,
- Sunny Tuesday, clear Tuesday night,
- Then sunny and a bit cooler Wednesday.
- free air freezing level above 16,000 ft. Sunday through Wednesday.
- highs 92-87 lows 57-55.