Here is my weekly new weather quiz question. “What is a “Severe Thunderstorm?”
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The Jet Stream will be producing onshore airflow helping to bring some cooler marine air inland. The graphics for days 1-3 show a frontal system sliding into Oregon enhancing the flow of marine air. The graphics for days 3-7 Monday through Friday show a cold frontal system approaching the Pacific Northwest.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 36 in the Good category measuring Ozone
Oakridge: The Air Quality Index is 14 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 37 in the Good 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 8 PM TONIGHT FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE KLAMATH BASIN AND THE FREEMONT-WINEMA NATIONAL FOREST.
- *A FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR THE KLAMATH BASIN AND THE FREEMONT-WINEMA NATIONAL FOREST.
- A RED FLAG WARNING IS IN EFFECT FROM 2 PM UNTIL 8 PM TODAY FOR GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE SOUTH CENTRAL DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES.
- A FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE SOUTH CENTRAL DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES.
- *AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL MIDNIGHT MDT SUNDAY NIGHT FOR THE OREGON LOWER TREASURE VALLEY.
- *AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR FOR BAKER COUNTY.
- *A HEAT ADVISORY IS IN EFFECT FROM MIDNIGHT MDT UNTIL SATURDAY UNTIL 11 PM SUNDAY FOR FOR BAKER COUNTY.
- *AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL MIDNIGHT MDT SATURDAY NIGHT FOR MALHEUR COUNTY.
- *A HEAT ADVISORY IS IN EFFECT FROM MIDNIGHT MDT SATURDAY NIGHT UNTIL MIDNIGHT MDT SUNDAY NIGHT FOR MALHEUR COUNTY.
- *A HEAT ADVISORY IS IN EFFECT UNTIL 10 PM SUNDAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON THE LOWER COLUMBIA BASIN OF OREGON, THE GRANDE RONDE VALLEY, HE SOUTHERN BLUE MOUNTAINS OF OREGON, THE JOHN DAY BASIN, THE OCHOCO, THE JOHN DAY HIGHLANDS, THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, AND CENTRAL OREGON.
- *A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM SATURDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
- *AN AIR QUALITY ALERT IS IN EFFECT UNTIL 5 PM MONDAY FOR KLAMATH AND LAKE 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:
- Sunny and slightly warmer today, clear tonight,
- Sunny and a bit warmer Saturday, clear at night,
- Sunny and a bit cooler Sunday, then clear Sunday night.
- highs 92-95 cooling to 93 Sunday lows 53-55 .
- Sunny and a bit cooler Monday, clear Monday night,
- Sunny and a bit warmer Tuesday, mostly clear at night,
- Sunny and a bit cooler Wednesday, mostly clear Wednesday night,
- Then sunny and a bit warmer Thursday.
- highs 92-94 cooling back to 92 Wednesday warming back to 94 Thursday lows 55-57 (seasonal averages high 84 low 52)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: LOW (3)
TREES: LOW (3)
WEEDS: ABSENT (0)
Measured 7.11.24
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Sunny today, clear tonight,
- Sunny and a bit warmer Saturday, clear at night,
- Mostly sunny and a bit cooler Sunday, then mostly clear Sunday night.
- highs 93-97 lows 59-62 cooling to 60 Sunday night.
- Sunny and a bit warmer Monday, clear Monday night,
- Mostly sunny and a bit warmer Tuesday, mostly clear at night,
- Mostly sunny and a bit cooler Wednesday, mostly clear Wednesday night,
- Then mostly sunny Thursday.
- highs 92-94 cooling back to 92 Wednesday lows near 60. (seasonal average high 86 low 57)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Some AM clouds, sunny and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy late tonight,
- Some AM clouds, sunny and a bit warmer Saturday afternoon, mostly clear in the evening, partly cloudy late at night,
- Some AM clouds, sunny Sunday afternoon, mostly clear in the evening, then partly cloudy late Sunday night.
- highs 72-74 lows near 52.
- Mostly sunny Monday, mostly clear Monday night,
- Mostly sunny and a bit cooler Tuesday, partly cloudy at night,
- Partly cloudy Wednesday, partly cloudy Wednesday night,
- Some AM clouds, then sunny and a bit warmer Thursday afternoon.
- highs 75-73 warming back to 75 Thursday lows near 52. (seasonal average high 66 low 54)
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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 and a bit warmer Saturday, mostly clear at night,
- Sunny and a bit cooler Sunday, then mostly clear Sunday night.
- free air freezing level 16,000 ft. today through Saturday night, then 15,000 ft. Sunday and Sunday night.
- highs 84-86 cooling back to 84 Sunday .
- Sunny and a bit cooler Monday, clear Monday night,
- Sunny and slightly cooler Tuesday, mostly clear at night,
- Sunny and a bit cooler Wednesday, mostly clear Wednesday night.
- Then sunny and a bit warmer Thursday.
- free air freezing level 15,000 ft. Monday through Tuesday night, 14,000 ft. Wednesday, 15,00 ft. Wednesday night, then 16,000 ft. Thursday.
- highs 87-88 cooling to 79 Monday lows 53-55 cooling to 52 Monday night.
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