Jul
29.
Here is my new weekly weather quiz question. “What is “Smog?”
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An Upper Level Low Pressure Trough (“U” shape) is sliding down from Canada. The graphics for days 1-3 show no frontal systems pushing through Oregon. The graphics for days 3-7 Thursday through Monday show a cold frontal system moving through the Pacific Northwest next Saturday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 13 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 86 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 22 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 1 PM WEDNESDAY FOR KLAMATH COUNTY AND LAKE COUNTY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON WEDNESDAY FOR DESCHUTES, GRANT, AND WHEELER COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON WEDNESDAY FOR BAKER, HARNEY, AND 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:
- Mostly cloudy with a slight (20%) chance of evening rain, just mostly cloudy late tonight,
- Mostly sunny and a bit warmer Tuesday, mostly clear Tuesday night,
- Then sunny and a bit warmer Wednesday and Thursday, mostly clear both nights.
- lows 62-56 warming to 59 Wednesday night and Thursday night highs 84-98.
- Mostly sunny and a bit cooler Friday, partly cloudy Friday night,
- Mostly sunny and a bit cooler Saturday, partly cloudy in the evening, becoming clear late at night,
- Then sunny Sunday and Monday, mostly clear Sunday night.
- highs 96-95 lows 58-56. (seasonal averages high 86 low 53)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: MODERATE (6)
TREES: ABSENT (0)
WEEDS: ABSENT (0)
Last Measured 7.29.24
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Partly cloudy with patchy fog and a slight (20%) chance of evening showers, patchy fog late tonight,
- Mostly cloudy start, sunny and a bit warmer Tuesday afternoon, mostly clear Tuesday night,
- Mostly sunny and a bit warmer Wednesday, mostly clear at night,
- Mostly sunny and a bit warmer (HOT) Thursday, then mostly clear Thursday night.
- lows 64-62 warming to 65 Wednesday night and Thursday night highs 87-101.
- Partly cloudy and a bit cooler Friday, partly cloudy Friday night,
- Partly cloudy and a bit cooler Saturday, partly cloudy at night,
- Mostly sunny and a bit Sunday, mostly clear Sunday night,
- Then mostly sunny Monday.
- highs 98-95 warming to 97 Sunday and Monday lows near 63 (seasonal averages high 88 low 59)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Cloudy with patchy evening fog and a slight (20%) chance of showers and areas of coastal fog late tonight while patchy inland late evening fog lasting all night,
- Mostly cloudy with patchy AM fog,, partly cloudy and a bit warmer Tuesday afternoon, mostly clear in the evening, partly cloudy late at night,
- Some AM clouds with patchy fog, sunny and a bit warmer Wednesday afternoon, mostly clear in the evening, then partly cloudy with patchy fog late Wednesday night.
- lows 57-55 highs 75-77.
- Patchy AM and late night fog, partly cloudy and a bit cooler Thursday, partly cloudy Thursday night,
- Patchy AM and late night fog, mostly cloudy and a bit cooler Friday, mostly cloudy at night,
- AM clouds with patchy fog, partly cloudy and a bit cooler Saturday and in the evening, mostly cloudy late Saturday night,
- Some AM clouds, sunny Sunday afternoon, mostly clear Sunday night,
- Then mostly sunny and a bit warmer Monday.
- highs 75-74 warming to 76 Monday lows 56-54. (seasonal average high 67 low 54)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Cloudy with a slight (20%) chance of rain tonight,
- AM clouds and sun, sunny and a bit warmer Tuesday afternoon, mostly clear Tuesday night,
- Sunny and warmer Wednesday, mostly clear at night,
- Sunny and a bit warmer Thursday, then mostly clear Thursday night.
- snow level above 8,000 ft. tonight, free air freezing level 14,000 ft. rising to 15,000 ft. Tuesday afternoon, above 16,000 ft. Tuesday night through Wednesday night, 16,000 ft. Thursday, then above 16,000 ft. Thursday night.
- lows 49-47 warming to 57 Thursday night highs near 69-89.
- Sunny and a bit cooler Friday and Saturday, partly cloudy both nights,
- Mostly sunny and a bit cooler Saturday, partly cloudy at night,
- Sunny and a bit cooler Sunday, mostly clear Sunday night,
- Then sunny and a bit warmer Monday.
- free air freezing level above 16,000 ft. Friday, 16,000 ft. Friday night through Sunday night, then 15,000 ft. Monday.
- highs 88-83 warming to 85 Monday lows near 56.
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