Here is my weekly new weather quiz question. “What is a “Severe Thunderstorm?”
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An Upper Level High Pressure Ridge (“Arch” shape) strengthens over us bringing more sunshine and intense heat. The graphics for days 1-3 show no frontal systems near the Pacific Northwest. The graphics for days 3-7 Thursday through Monday show a cold front moving in between next Thursday and Thursday night.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 91 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 26 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 WEDNESDAY FOR THE JOHN DAY BASIN AND CENTRAL OREGON.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM 2 PM TODAY UNTIL MIDNIGHT MDT FOR THE OREGON LOWER TREASURE VALLEY.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM 11 AM MDT UNTIL MIDNIGHT MDT THURSDAY NIGHT FOR MALHEUR COUNTY.
- AN EXCESSIVE HEAT WATCH IS IN EFFECT FROM 11LATE THURSDAY NIGHT THROUGH SUNDAY EVENING FOR MALHEUR COUNTY
- *AN EXCESSIVE HEAT WATCH IS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SUNDAY EVENING FOR THE OREGON LOWER TREASURE VALLEY.
- A HEAT ADVISORY IS IN EFFECT FROM NOON TODAY UNTIL 10 PM THURSDAY FOR WALLOWA COUNTY.
- AN EXCESSIVE HEAT WATCH IS IN EFFECT FROM THIS AFTERNOON THROUGH FRIDAY EVENING FOR HARNEY COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.
- A HEAT ADVISORY IS IN EFFECT FROM 10 AM TUESDAY UNTIL 11 PM THURSDAY FOR HARNEY COUNTY.
- A EXCESSIVE HEAT WATCH IS IN EFFECT FROM THURSDAY EVENING THROUGH SUNDAY EVENING FOR HARNEY COUNTY.
- A EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 9 PM TUESDAY 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 TODAY UNTIL 10 PM TUESDAY FOR THE EAST SLOPES OF THE OREGON CASCADES.,
- A HEAT ADVISORY IS IN EFFECT FROM NOON TODAY UNTIL 10 PM WEDNSDAY FOR THE GRANDE RONDE VALLEY, WALLOWA COUNTY, THE NORTHERN BLUE MOUNTAINS OF OREGON, THE SOUTHERN BLUE MOUNTAINS OF OREGON, AND THE NORTHWEST BLUE MOUNTAINS.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 10 PM WEDNESDAY 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 WARNING IS IN EFFECT FROM 10 AM TUESDAY UNTIL 11 PM WEDNESDAY FOR FOR BAKER COUNTY.
- AN EXCESSIVE HEAT WATCH IS IN EFFECT THURSDAY EVENING THROUGH SUNDAY EVENING FOR FOR BAKER COUNTY.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 9 PM TUESDAY FOR CENTRAL DOUGLAS COUNTY, AND THE EASTERN DOUGLAS COUNTY FOOTHILLS.
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:
- Sunny and (VERY HOT) today, clear tonight,
- Sunny (Still VERY HOT) Tuesday, clear at night,
- Sunny and a bit cooler (Still VERY Warm) Wednesday, clear Wednesday night.
- highs 103-94 lows 63-55.
- Sunny and a bit cooler Thursday, clear Thursday night,
- Sunny and a bit warmer (Still Very Warm) Friday, clear at night,
- Sunny and a bit warmer Saturday,
- Sunday Sunday.
- highs 91-93 lows 52-55 (seasonal averages high 82 low 51)
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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:
- Sunny (STILL VERY HOT) today, clear tonight,
- Sunny and a bit cooler (BUT STILL HOT) Tuesday, clear at night,
- Sunny and a bit cooler Wednesday, then clear Wednesday night.
- highs 107-96 lows 69-60.
- Sunny and a bit cooler Thursday, clear Thursday night,
- Sunny Friday, clear at night,
- Sunny and slightly warmer Saturday, clear Saturday night,
- Then sunny Sunday.
- 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:
- Sunny and warmer today, mostly clear tonight,
- Mostly sunny and a bit cooler Tuesday, mostly clear at night,
- Mostly sunny and a bit cooler Wednesday, then mostly clear Wednesday night.
- highs 77-72 lows near 52.
- Mostly sunny Thursday, mostly clear Thursday night,
- Mostly sunny and a bit cooler Friday, mostly clear at night,
- Mostly sunny and a bit warmer Saturday, mostly clear Saturday night,
- Then mostly sunny Sunday.
- highs 72-70 warming back to 72 Saturday and Sunday lows near 50. (seasonal average high 66 low 53)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Sunny and a bit warmer today, clear tonight,
- Sunny Tuesday, clear at night,
- Sunny and a bit cooler Wednesday, then clear Wednesday night.
- free air freezing level 16,000 ft. today through Wednesday night,
- highs 92-84 lows 62-50.
- Sunny and a bit cooler Thursday, clear Thursday night,
- Sunny and a bit warmer Friday and Saturday, clear both nights,
- Then sunny and a bit cooler Sunday.
- free air freezing level 16,000 ft. Thursday through Saturday night, then 15,000 ft. Sunday.
- highs 82-84 lows near 52.
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