Jul
16.
Here is my new weekly weather quiz question. “What is the “Showalter Index?”
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Upper Level High Pressure over the 4 corners area is moving away from us but still producing sunshine with high temperatures in the 90s. The graphics for days 1-3 show a frontal system sliding into Oregon Friday. The graphics for days 3-7 Friday through Tuesday show a cold frontal system slowly pushing through the Pacific Northwest Friday and Saturday with another cold front sliding in Tuesday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 24 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 26 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 19 in the Good category measuring Ozone.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT UNTIL 8 AM TODAY FOR THUNDERSTORMS FOR THE NORTHERN AND CENTRAL WILLAMETTE VALLEY, THE NORTHERN OREGON CASCADE FOOTHILLS, AND THE MT. HOOD NATIONAL FOREST REGION.
- A RED FLAG WARNING IS IN EFFECT UNTIL 5 AM TODAY FOR THUNDERSTORMS FOR THE SOUTH WILLAMETTE VALLEY, THE CENTRAL OREGON CASCADE FOOTHILLS, THE NORTHERN WILLAMETTE FOREST, AND THE SOUTHERN OREGON NATIONAL FOREST.
- A RED FLAG WARNING IS IN EFFECT UNTIL 5 PM THIS EVENING FOR ABUNDANT LIGHTNING UNTIL 5 PM WEDNESDAY FOR THE LOWER COLUMBIA BASIN OF OREGON.
- A RED FLAG WARNING IS IN EFFECT UNTIL 9 AM TODAY FOR ABUNDANT LIGHTNING FOR THE EAST SLOPES OF THE CENTRAL OREGON CASCADES, THE DESCHUTES NATIONAL FOREST, THE MIINUS SISTERS RANGER DISTRICT, THE EAST SLOPES OF THE NORTHERN OREGON CASCADES, AND THE CENTRAL MOUNTAINS OF OREGON.
- A HEAT ADVISORY IS IN EFFECT UNTIL 8 AM TODAY FOR THE INNER PORTLAND METRO-EAST PORTLAND METRO, THE WEST COLUMBIA RIVER GORGE, AND THE CENTRAL COLUMBIA GORGE, AND THE I-84 CORRIDOR.
- A HEAT ADVISORY IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE EASTERN COLUMBIA GORGE OF OREGON AND THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON.
- A HEAT ADVISORY IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON AND NORTH CENTRAL OREGON.
- A HEAT ADVISORY IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE JOHN DAY BASIN.
- A HEAT ADVISORY IS IN EFFECT UNTIL 8 PM TONIGHT FOR THE INNER PORTLAND METRO, THE EAST PORTLAND METRO, THE WESTERN COLUMBIA GORGE I-84 CORRIDOR, THE CENTRAL COLUMBIA RIVER GORGE, AND THE I-84 CORRIDOR.
- A HEAT ADVISORY IS IN EFFECT UNTIL 10 PM THURSDAY FOR THE LOWER COLUMBIA BASIN OF OREGON.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON TODAY FOR GRANT, MORROW, AND UMATILLA COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON TODAY FOR BAKER COUNTY, NORTHERN HARNEY COUNTY, AND NORTHERN MALHEUR COUNTY.
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 cooler today, mostly clear tonight,
- Sunny and a bit warmer Thursday, mostly clear at night,
- Sunny and a bit warmer Friday, then clear Friday night.
- highs 88-92 lows 54-52 warming to 55 Friday night.
- Sunny and a bit warmer Saturday, mostly clear Saturday night,
- Mostly sunny and a bit cooler Sunday, clear Sunday night,
- Mostly sunny Monday, clear Monday night,
- Then sunny and a bit cooler Tuesday.
- highs 94-88 lows 56-52 (seasonal averages high 85 low 52)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: LOW (3)
TREES: LOW (5)
WEEDS: ABSENT (0)
Measured 7.16.24
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Sunny and cooler today, mostly clear tonight,
- Sunny and a bit warmer Thursday, mostly clear at night,
- Sunny and a bit warmer Friday, then clear Friday night.
- highs 88-92 lows 54-52 warming to 55 Friday night.
- Sunny and a bit warmer Saturday, mostly clear Saturday night,
- Mostly sunny and a bit cooler Sunday, clear Sunday night,
- Mostly sunny Monday, clear Monday night,
- Then sunny and a bit cooler Tuesday.
- highs 94-88 lows 56-52 (seasonal averages high 85 low 52)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with patchy AM coastal fog while areas of inland fog, sunny and a bit warmer this afternoon, mostly clear with patchy evening fog, partly cloudy with areas of fog late tonight,
- Mostly cloudy with areas of AM fog, sunny and a bit warmer Thursday afternoon, mostly clear with patchy evening fog, partly cloudy with areas of fog late Thursday night,
- Partly cloudy with areas of AM fog, partly cloudy and a bit warmer Friday, then partly cloudy with patchy fog Friday night.
- highs 72-75 lows near 52.
- Patchy AM fog, partly cloudy and a bit cooler Saturday, mostly cloudy with patchy fog late Saturday night,
- Patchy AM and late night fog, mostly cloudy and a bit cooler Sunday, mostly clear in the evening, partly cloudy late at night,
- Some AM clouds with patchy fog, sunny and a bit cooler Monday afternoon, mostly clear Monday night,
- Then mostly sunny and a bit warmer Tuesday.
- highs 73-72 warming back to 73 Tuesday lows 55-52. (seasonal average high 66 low 54)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Sunny and cooler today, mostly clear tonight,
- Sunny Thursday, mostly clear at night,
- Sunny Friday, then clear Friday night.
- free air freezing level 14,000 ft. today, 15,000 ft. Thursday and Thursday night, then 6,000 ft Friday.
- highs near 82 lows 53-50 warming to 52 Friday.
- Sunny and a bit warmer Saturday, mostly clear Saturday night,
- Sunny and a bit cooler Sunday, mostly clear at night,
- Sunny Monday, mostly clear Monday night,
- Then sunny and a bit cooler Tuesday.
- free air freezing level 16,000 ft. Saturday through Tuesday.
- highs 90-80 lows 54-49.
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