Jul
26.
Here is my weekly weather quiz question. “What is a “Sling Psychometer?”
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An Upper Level Low Pressure Trough in Canada and surface High Pressure off our coast keep the weather mild. The graphics for days 1-3 show no frontal systems moving through Oregon. The graphics for days 3-7 Monday through Friday show a weak cold frontal system offshore & falling apart Monday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 42 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 71 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 21 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, THE FREMONT-WINEMA NATIONAL FOREST, AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON MONDAY FOR KLAMATH COUNTY AND LAKE COUNTY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON MONDAY FOR CROOK, DESCHUTES, GRANT, AND WHEELER COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON MONDAY FOR BAKER, HARNEY, AND MALHEUR COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT FOR WILDFIRE SMOKE THROUGH SATURDAY AFTERNOON FOR EASTERN LANE COUNTY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 5 PM SATURDAY DUE TO WILDFIRE SMOKE FOR EASTERN LANE COUNTY INCLUDING THE LANE COUNTY CASCADE FOOTHILLS AND THE CASCADES OF LANE 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:
- Mostly clear and hazy tonight,
- Sunny and a bit cooler Saturday, mostly clear Saturday night,
- Mostly sunny Sunday, mostly clear in the evening, partly cloudy at night,
- Mostly sunny and a bit cooler with a slight (20%) chance of rain Monday, then mostly cloudy with a (30%) chance of rain Monday night.
- lows 50-59 highs 86-84.
- Mostly cloudy start, a mix of clouds and sun and a bit cooler Tuesday afternoon, partly cloudy in the evening, mostly clear late Tuesday night,
- Sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Sunny and a bit warmer Thursday, mostly clear Thursday night,
- Then sunny Friday.
- highs 83-95 lows near 58. (seasonal averages high 86 low 53)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: MODERATE (5)
TREES: ABSENT (0)
WEEDS: ABSENT (0)
Measured 7.25.24
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Mostly clear tonight,
- Sunny and a bit warmer Saturday, mostly clear Saturday night,
- Some AM clouds, sunny and a bit warmer Sunday, mostly clear at night,
- Partly cloudy Monday with a slight (20%) chance of afternoon rain, then mostly cloudy with a slight (20%) chance of rain Monday night.
- lows 56-64 highs 85-87.
- Mostly cloudy start, partly cloudy and a bit cooler Tuesday afternoon, mostly clear Tuesday night,
- Mostly sunny and a bit warmer Wednesday, mostly clear at night,
- Mostly sunny and a bit warmer Thursday, mostly clear Thursday night,
- Some AM clouds, then sunny and a bit cooler Friday afternoon.
- highs 86-97 cooling to 95 Friday lows near 63 (seasonal averages high 88 low 58)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear this evening, mostly cloudy late tonight,
- AM clouds, sunny and a bit warmer Saturday afternoon, partly cloudy in the evening, mostly cloudy late Saturday night,
- AM clouds, sunny and a bit warmer Sunday, partly cloudy in the evening, mostly cloudy late at night,
- Mostly cloudy and a bit cooler Monday with a slight (20%) chance of afternoon rain, then mostly cloudy with a slight (20%) chance of rain Monday night.
- lows 53-57 highs 72-74 cooling back to 72 Monday night.
- Mostly cloudy with a slight (20%) chance of AM rain, just mostly cloudy Tuesday afternoon, partly cloudy in the evening, mostly cloudy late Tuesday night,
- Mostly cloudy and a bit warmer Wednesday, partly cloudy at night,
- Partly cloudy Thursday and Thursday night,
- Then partly cloudy and a bit cooler Friday.
- highs 73-75 cooling back to 73 Friday lows near 55. (seasonal average high 67 low 54)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Hazy with areas of evening smoke, mostly clear and hazy late tonight,
- Sunny and hazy and a bit cooler Saturday, mostly clear and hazy Saturday night,
- Sunny Sunday, mostly clear at night,
- Sunny Monday, then mostly cloudy with a (40%) chance of rain Monday night.
- free air freezing level 14,000 ft. tonight, 14,000 ft. falling to 13,000 ft. Saturday afternoon, 13,000 ft. Sunday night, 14,000 ft. Monday, then snow level above 8,000 ft. Monday night.
- lows 44-49 highs near 72.
- Mostly sunny and a bit cooler with a slight (20%) chance of showers Tuesday, mostly clear in the evening, partly cloudy late Tuesday night,
- Sunny and a bit warmer Wednesday, mostly clear at night,
- Sunny and a bit warmer Thursday, mostly clear Thursday night,
- Then sunny Friday.
- free air freezing level snow level above 8,000 ft. Tuesday, then free air freezing level above 16,000 ft. Tuesday night through Friday.
- highs 69-85 lows 47-55.
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