Sep
12.
Here is my weekly weather quiz question. What is a “Squall?”
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A strong Upper Level Low Pressure Trough gives us onshore flow and rain for a while. The graphics for days 1-3 show a cold frontal system approaching the coast Saturday and moving in. The graphics for days 3-7 Monday through Friday show a cold front sliding through the Pacific Northwest by Monday and another front moves in next Wednesday with yet another front following behind it.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 21 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 6 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 7 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 ADVISORY IS IN EFFECT FOR WILDFIRE SMOKE UNTIL 3 PM FRIDAY FOR DESCHUTES, GRANT, AND WHEELER 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:
- Patchy AM fog, mostly sunny and a bit warmer today, mostly cloudy with patchy fog late tonight,
- Patchy AM and late night fog, a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Saturday afternoon, mostly cloudy with a good (50%) chance of showers at night,
- Patchy AM and late night fog, a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Sunday, then partly cloudy with a slight (20%) chance of showers Sunday night.
- highs 77-70 lows 52-47.
- Patchy AM fog, mostly sunny and a bit warmer Monday, partly cloudy with a a good (50%) chance of evening rain, mostly cloudy with a good (50%) chance of rain Monday night,
- Mostly cloudy and a bit cooler with rain Tuesday, rain at night,
- Mostly cloudy showers likely (70%) and a bit warmer Wednesday, mostly cloudy with a (30%) chance of evening showers, patchy fog with a (30%) chance of showers late Wednesday night,
- Patchy AM fog, then mostly sunny and a bit warmer Thursday.
- highs 73-67 warming back to 73 Thursday lows 49-53 cooling back to 49 Wednesday night. (seasonal averages high 79 low 48)
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Your Saturday College Football Weather Forecast:
Saturday September 14th:
Ducks vs Beavers at Reser Stadium, Corvallis Game time 12:30 pm- Preliminary Weather forecast: Partly cloudy 67 degrees warming to 72 degrees by the end of the game, a slight (20%) chance of rain in the afternoon. Dress accordingly.
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Forecast for the Umpqua Valley including Roseburg:
- Mostly clear this evening, partly cloudy late tonight,
- Some AM clouds, sunny and a bit warmer Friday afternoon, partly cloudy in the evening, mostly cloudy late Friday night,
- Partly cloudy Saturday, partly cloudy with a slight (20%) of evening rain, mostly cloudy with a slight (20%) chance of rain late at night,
- Mostly cloudy and cooler with a good (50%) chance of showers and a bit cooler Sunday, mostly cloudy with a (40%) chance of evening showers, then partly cloudy with a (30%) chance of showers late Sunday night.
- lows 53-56 cooling to 52 Sunday night highs 78-70. .
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Monday, a slight (20%) chance of showers Monday night,
- Mostly cloudy with a (%) chance of AM showers, rain likely (70%) and a bit cooler Tuesday afternoon, evening rain, rain likely (70%) late at night,
- Mostly cloudy with a good (50%) chance of AM rain, rain likely (70%) and a bit warmer Wednesday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Wednesday night,
- Then partly cloudy and a bit warmer Thursday.
- highs 74-68 warming back to 74 Thursday lows 52-56 cooling to back to 52 Wednesday night. (seasonal averages high 81 low 53)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear this evening, partly cloudy late tonight,
- Some AM clouds, sunny and a bit warmer Friday afternoon, partly cloudy in the evening, mostly cloudy late Friday night,
- Mostly cloudy with a slight (20%) chance of coastal showers Saturday afternoon, partly cloudy with a slight (20%) chance of evening rain, mostly cloudy with a slight (20%) chance of rain late at night,
- Mostly cloudy and a bit cooler with a (40%) chance of showers Sunday, partly cloudy with a slight (20%) chance of evening showers, just then partly cloudy late Sunday night.
- lows 50-54 cooling to 52 Sunday night highs 72-69.
- Partly cloudy and a bit warmer Monday and in the evening, mostly cloudy late Monday night,
- Mostly cloudy with a good (50%) chance of AM showers, rain and a bit cooler Tuesday, rain likely (70%) at night,
- Mostly cloudy with a good (50%) chance of AM rain, a bit warmer with a good (50%) chance of showers Wednesday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Wednesday night,
- Then partly cloudy and a bit warmer Thursday.
- highs 72-69 warming to 72 Thursday lows 53-55 cooling to 52 Wednesday night . (seasonal average high 67 low 52)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Sunny and warmer today, partly cloudy this evening, mostly cloudy late tonight,
- A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Saturday afternoon, mostly cloudy with a good (50%) chance of showers at night,
- Mostly cloudy and cooler with showers likely (70%) Sunday, then mostly cloudy with a good (50%) chance of showers Sunday night.
- free air freezing level 13,000 ft. today and tonight, snow level above 8,000 ft. Saturday through Sunday, then 7,500 ft. Sunday night.
- highs 53-64 cooling to 60 Saturday lows 42-36.
- A mix of clouds and sun and a bit warmer with slight (20%) chance of showers Monday, mostly cloudy with a good (50%) chance of showers Monday night,
- Mostly cloudy and a bit cooler with rain Tuesday, rain at night,
- Mostly cloudy and a bit warmer with showers likely (70%) Wednesday, a (40%) chance of showers Wednesday night,
- Them mostly sunny and a bit warmer with a slight (20%) chance of showers Thursday.
- snow level above 8,000 ft. Monday and Monday night, above 8,000 ft. Tuesday and Tuesday night, 8,000 ft. Wednesday and Wednesday night, then above 8,000 ft. Thursday.
- highs 53-49 warming to 52 Wednesday lows near 37.