Sep
17.
Here is my new weekly weather quiz question. What is a “Stationary Front?”
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A strong Upper Level Low Pressure Trough moves away as an Upper Level High Pressure Ridge (“Arch” shape) takes over. The graphics for days 1-3 show no frontal systems approaching the coast. The graphics for days 3-7 Friday through Tuesday show no fronts sliding through the Pacific Northwest through the period, but a cold front will be to our north next Tuesday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 4 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 16 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- NONE AT THIS TIME.
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 evening showers, mostly cloudy with patchy fog late tonight,
- AM clouds and sun with patchy fog, sunny and warmer Wednesday afternoon, mostly clear with patchy fog late Wednesday night,
- Patchy AM fog, mostly sunny and a bit cooler Thursday, mostly clear at night,
- Mostly sunny and a bit cooler Friday, then mostly clear Friday night.
- lows 53-45 highs 77-73.
- Sunny and a bit warmer Saturday, mostly clear in the evening, partly cloudy late Saturday night,
- Mostly sunny and a bit warmer Sunday (Autumnal Equinox 5:44 AM), partly cloudy with a slight (20%) chance of evening rain, mostly cloudy with a slight (20%) chance of rain late at night,
- Mostly sunny Monday, mostly clear Monday night,
- Then sunny and a bit warmer Tuesday.
- highs 75-80 lows 49-52. (seasonal averages high 78 low 48)
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Your Saturday College Football Weather Forecast:
Saturday September 21st:
Ducks have a Bye week-Next game Saturday September 28th:
Ducks vs UCLA at the Rose Bowl Stadium: Time to be announced- Way too soon for a preliminary weather forecast.
Saturday September 21st:
Beavers vs Perdue at Reser Stadium, Corvallis: Game time 5:30 pm- 72 degrees partly cloudy cooling to 62 by the end of the game.
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Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with evening rain and patchy fog, a good (50%) chance of rain late tonight (0.10 in. of rain possible),
- Mostly cloudy with areas of AM fog, sunny and warmer Wednesday, mostly clear Wednesday night,
- Some AM clouds with patchy fog, sunny and a bit warmer Thursday afternoon, mostly clear with patchy fog at night,
- Some AM clouds with patchy fog, sunny and a bit cooler Friday afternoon, then mostly clear Friday night.
- lows 56-48 highs 78-83.
- Patchy AM fog, sunny and a bit warmer Saturday, mostly clear in the evening, partly cloudy Saturday night,
- Sunny start, partly cloudy Sunday afternoon (Autumnal Equinox 5:44 AM), partly cloudy with a slight (20%) chance of showers at night,
- Partly cloudy and a bit warmer Monday, partly cloudy with patchy fog Monday night,
- Patchy AM fog, then sunny and a bit warmer Tuesday afternoon.
- highs 78-83 lows 52-55. (seasonal averages high 80 low 52)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with at the coast with patchy fog tonight tonight while mostly cloudy with inland evening showers and a slight (20%) chance of thunderstorms and a (40%) chance of inland tonight with patchy fog late (under 0.10 in. of rain possible),
- Some AM clouds with patchy fog, sunny and slightly warmer Wednesday afternoon, mostly clear in the evening, partly cloudy late Wednesday night,
- Mostly cloudy start, sunny and a bit cooler Thursday, partly cloudy at night,
- Some AM clouds, sunny Friday afternoon, partly cloudy in the evening, then mostly clear late Friday night.
- lows 56-49 highs 63-67 cooling to 64 Thursday .
- Some AM clouds, sunny and a bit warmer Saturday afternoon, partly cloudy Saturday night,
- Partly cloudy and a bit warmer Sunday, partly cloudy with a slight (20%) chance of evening showers, Sunday afternoon (Autumnal Equinox 5:44 AM) and evening, just partly cloudy late at night,
- Partly cloudy Monday and Monday night,
- Then partly cloudy and a bit warmer Tuesday.
- highs 72-74 lows 52-54. (seasonal average high 67 low 51)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with evening showers likely (70%) tonight (0.25 in. of rain possible),
- Mostly cloudy with a (30%) chance of AM showers, mostly sunny and a bit warmer with a slight (20%) chance of showers Wednesday afternoon, just partly cloudy Wednesday night,
- Sunny and a bit warmer Thursday, mostly clear in the evening, partly cloudy late at night,
- Sunny and a bit cooler Friday, partly cloudy Friday night.
- free air freezing level above 8,000 ft. tonight, free air freezing level 10,000 ft. rising to 11,000 ft. Wednesday, 12,000 ft, Wednesday night, 13,000 ft. Thursday, 14,000 ft. Thursday night through Friday night.
- lows 39-40 cooling to 38 Friday night highs 62-64 cooling to 60 Friday.
- Mostly sunny and a bit warmer with a slight (20%) chance of showers Saturday, partly cloudy with a (30%) chance of evening rain, mostly cloudy with a (30%) chance showers Saturday night,
- A mix of clouds and sun with slight (20%) chance of rain and a bit warmer Sunday (Autumnal Equinox 5:44 AM), mostly cloudy with slight (20%) chance of rain at night,
- Mostly sunny Monday, partly cloudy Monday night,
- Then sunny and a bit warmer Tuesday.
- free air freezing level 13,000 ft. Saturday and Saturday night, 14,000 ft, Sunday, snow level above 8,000 ft. Sunday night, free air freezing level 15,000 ft. Monday, then above 16,000 ft. Monday night and Tuesday.
- highs 64-70 lows 42-44.