Jul
06.
Here is my weekly weather quiz question for the last time. “What is a “Sea Breeze?” Here is the correct answer. A Sea Breeze is a thermally produced wind blowing during the day from a cool ocean surface onto the adjoining warm land, caused by the difference in the rates of heating of the surfaces of the ocean and of the land.
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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 Tuesday through Saturday show no frontal systems sliding into the Pacific Northwest through the period. There will be a cold front to our northwest next Wednesday then moving in between next Thursday and Friday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 54 in the Moderate category measuring Ozone.
Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 19 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 UNTIL 10 PM TUESDAY 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 UNTIL 10 PM TUESDAY FOR THE NORTH OREGON CASCADES, THE CASCADES OF MARION AND LINN COUNTIES, AND THE CASCADES OF LANE COUNTY.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 10 PM THURSDAY FOR THE JOHN DAY BASIN AND CENTRAL OREGON.
- A HEAT ADVISORY IS IN EFFECT FROM NOON MONDAY UNTIL 10 PM THURSDAY FOR WALLOWA COUNTY.
- AN EXCESSIVE HEAT WATCH IS IN EFFECT FROM MONDAY AFTERNOON THROUGH FRIDAY EVENING FOR HARNEY COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.
- A EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 9 PM MONDAY FOR CENTRAL DOUGLAS COUNTY AND THE EASTERN DOUGLAS COUNTY FOOTHILLS.
- A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM TUESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
- A HEAT ADVISORY IS IN EFFECT FROM NOON MONDAY UNTIL 10 PM TUESDAY FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A HEAT ADVISORY IS IN EFFECT FROM NOON MONDAY UNTIL 10 PM THURSDAY FOR THE GRANDE RONDE VALLEY, THE NORTHERN BLUE MOUNTAINS OF OREGON, THE NORTHERN BLUE MOUNTAINS OF OREGON, AND THE NORTHWEST BLUE MOUNTAINS.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 10 PM THURSDAY 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 UNTIL 9 PM TUESDAY FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- AN EXCESSIVE HEAT WATCH IS IN EFFECT FROM MONDAY AFTERNOON THROUGH FRIDAY EVENING FOR BAKER COUNTY.
- A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EAST SLOPES OF THE CENTRAL OREGON CASCADES, THE DESCUTES NATIONAL FOREST, THE MINUS SISTERS RANGER DISTRICT, AND THE CENTRAL MOUNTAINS OF OREGON.
- A RED FLAG WARNING IS IN EFFECT FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EAST SLOPES OF THE CENTRAL OREGON CASCADES, THE DESCHUTES NATIONAL FOREST, THE MINUS SISTERS RANGER DISTRICT, AND THE CENTRAL MOUNTAINS OF OREGON, AND THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS.
- A RED FLAG WARNING IS IN EFFECT UNTIL 8 PM THIS EVENING FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE UMPQUA BASIN, THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY, THE SISKIYOU MOUNTAINS, THE EASTERN ROGUE VALLEY, AND THE SOUTHERN OREGON CASCADES.
- A RED FLAG WARNING IS IN EFFECT FROM 2 PM UNTIL 8 PM SUNDAY FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE UMPQUA BASIN, THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY, THE SISKIYOU MOUNTAINS, THE EASTERN ROGUE VALLEY, AND THE SOUTHERN OREGON CASCADES.
- A RED FLAG WARNING IS IN EFFECT UNTIL 8 PM THIS EVENING FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES.
- A RED FLAG WARNING IS IN EFFECT UNTIL 8 PM THIS EVENING FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE UMPQUA BASIN, THE UMPQUA NATIONAL FOREST, THE WESTERN ROGUE BASIN INCLUDING THE THE ILLINOIS VALLEY, THE SISKIYOU MOUNTAINS, THE EASTERN ROGUE VALLEY, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, AND THE FREMONT-WINEMA NATIONAL FOREST.
- A RED FLAG WARNING IS IN EFFECT FROM 2 PM UNTIL 8 PM SUNDAY FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE UMPQUA BASIN, THE UMPQUA NATIONAL FOREST, THE WESTERN ROGUE BASIN INCLUDING THE THE ILLINOIS VALLEY, THE SISKIYOU MOUNTAINS, THE EASTERN ROGUE VALLEY, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, AND THE FREMONT-WINEMA NATIONAL FOREST.
- A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE BURNS BLM AND THE VALE BLM.
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 a bit cooler (But Still Very VERY HOT!) Sunday, clear Sunday night,
- Sunny and a bit warmer (Very HOT) Monday, clear at night,
- Sunny and slightly cooler (Still Very HOT) Tuesday, then clear Tuesday night.
- lows 59-62 cooling to 57 Friday night highs 102-104 cooling back to 102 Tuesday.
- Sunny and a bit cooler (Still Very Warm) Wednesday, clear Wednesday night,
- Sunny and a bit cooler Thursday, clear at night,
- Sunny and a bit warmer (Still Very Warm) Friday, clear Friday night,
- Then sunny Saturday.
- highs 94-89 warming to 92 Friday and Saturday lows 55-53 (seasonal averages high 82 low 52)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: MODERATE (62)
TREES: LOW (3)
WEEDS: ABSENT (0)
Measured 7.6.24
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Clear tonight,
- Sunny and slightly cooler (Still VERY HOT) Sunday, clear Sunday night,
- Sunny (STILL VERY HOT) Monday, clear at night,
- Sunny and a bit cooler (BUT STILL HOT) Tuesday, then clear Tuesday night.
- lows 66-68 cooling to 63 Tuesday night highs 107 -104.
- Sunny and a bit cooler Wednesday and Thursday, clear both nights,
- Sunny Friday, clear Friday night,
- Then sunny and slightly warmer Saturday.
- highs 96-92 warming to 94 Saturday lows 62-59. (seasonal average high 84 low 56)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Clear tonight,
- Sunny and a bit cooler Sunday, mostly clear Sunday night,
- Sunny Monday, mostly clear at night,
- Mostly sunny and a bit cooler Tuesday, then mostly clear Tuesday night.
- lows 54-52 highs 78-74.
- Mostly sunny and a bit cooler Wednesday, mostly clear Wednesday night,
- Mostly sunny Thursday, mostly clear at night,
- Mostly sunny and a bit cooler Friday, mostly clear Friday night,
- Some AM clouds, sunny and a bit warmer Saturday afternoon.
- highs 72-70 warming back to 72 Saturday lows 52-50. (seasonal average high 65 low 53)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Clear tonight,
- Sunday and a bit cooler Sunday, mostly clear Sunday night,
- Sunny and a bit warmer Monday, clear at night,
- Sunny Tuesday, then clear Tuesday night.
- free air freezing level above 16,000 ft. tonight, above 16,000 ft. Sunday, then 16,000 ft. Sunday night through Tuesday night,
- lows 53-62 cooling to 57 Tuesday night highs 89-92 Monday.
- Sunny and a bit cooler Wednesday and Thursday, clear both nights,
- Then sunny and a bit warmer Friday and Saturday, clear Friday night,
- free air freezing level 16,000 ft. Wednesday through Friday night, then 15,000 ft. Saturday.
- highs 82-84 lows near 52.