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 keeps us in sunshine with high temperatures in the 90s. The graphics for days 1-3 show no frontal systems sliding into Oregon. The graphics for days 3-7 Thursday through Monday show a cold frontal system slowly pushing through the Pacific Northwest next Friday through Monday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 34 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 21 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 23 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 FROM 11 AM UNTIL 9 PM TONIGHT FOR DRY AND UNSTABLE CONDITIONS FOR THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS.
- A RED FLAG WARNING IS IN EFFECT FROM 11 AM UNTIL 9 PM TONIGHT FOR THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY, AND THE EASTERN ROGUE VALLEY.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 5 PM TODAY FOR KLAMATH AND LAKE COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 12 PM TODAY FOR SHERMAN AND WASCO COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 12 PM TODAY FOR NORTHERN HARNEY AND NORTHERN MALHEUR 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 cooler today, mostly clear tonight,
- Sunny and slightly warmer (HOT) Tuesday, mostly cloudy with a slight (20% ) chance of evening thunderstorms, just partly cloudy late at night,
- Sunny and a bit cooler Wednesday, then mostly clear Wednesday night.
- highs 94-95 cooling 88 Wednesday lows 56-53.
- Sunny and a bit warmer Thursday, mostly clear Thursday night,
- Sunny and a bit warmer Friday, clear Friday night,
- Sunny and slightly cooler Saturday, clear Saturday night,
- Then sunny and a bit cooler Sunday.
- highs 92-94 cooling to 90 Sunday lows 56-54 (seasonal averages high 84 low 52)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: MODERATE (6)
TREES: LOW (8)
WEEDS: ABSENT (0)
Measured 7.14.24
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Sunny and hazy and slightly warmer (HOT) today, mostly clear tonight and hazy late,
- Sunny with AM haze, partly cloudy and hazy and a bit cooler Tuesday, partly cloudy with a slight (20%) chance of thunderstorms at night,
- Mostly sunny and a bit cooler Wednesday, then mostly clear Wednesday night.
- highs 98-92 lows 62-58.
- Mostly sunny and a bit warmer Thursday, mostly clear Thursday night,
- Mostly sunny Friday, mostly clear at night,
- Mostly sunny Saturday, clear Saturday night,
- Then sunny and a bit cooler Sunday.
- highs 93-90 lows 62-59. (seasonal average high 86 low 58)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Some AM clouds with inland haze, sunny and warmer this afternoon, mostly clear tonight with inland haze late,
- Partly cloudy and hazy and a bit cooler Tuesday, mostly cloudy with a slight (20%) chance of evening coastal thunderstorms while partly cloudy with a slight (20%) chance of inland evening thunderstorms, just mostly cloudy late Tuesday night,
- Partly cloudy and a bit cooler Wednesday, then partly cloudy Wednesday night.
- highs 76-70 lows near 52.
- Some AM clouds , sunny and a bit warmer Thursday afternoon, partly cloudy Thursday night,
- Partly cloudy Friday, partly cloudy at night,
- Then partly cloudy and a bit cooler Saturday and Sunday, partly cloudy Sunday night.
- highs 75-72 lows 54-52. (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 cooler today, mostly clear tonight,
- Sunny and a bit warmer Tuesday with a slight (20%) chance of afternoon thunderstorms, mostly cloudy with a slight (20%) chance of evening thunderstorms, partly cloudy with a slight (20%) chance of thunderstorms late at night,
- Sunny and a bit cooler Wednesday, then mostly clear Wednesday night.
- free air freezing level 15,000 ft. today and tonight, 14,000 ft. Tuesday, 15,000 ft. falling to 14,000 ft. Tuesday night, then 15,000 ft. Wednesday and Wednesday night.
- highs 83-87 cooling to 82 Wednesday lows 56-52.
- Sunny and Thursday, clear Thursday night,
- Sunny and a bit warmer Friday, mostly clear at night,
- Sunny and a bit warmer Saturday, mostly clear Saturday night,
- Then sunny and a bit cooler Sunday.
- free air freezing level 15,000 ft. Thursday, 16,000 ft. Thursday night and Friday, above 6,000 ft. Friday night, 16,000 ft. Saturday, above 16,000 ft Saturday night, then 16,000 ft. Sunday.
- highs 82-86 cooling to 83 Sunday lows 50-52.
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