Sep
11.
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 what’s left of a cold frontal system that pushed through the Pacific Northwest. The graphics for days 3-7 Saturday through Wednesday show a cold front sliding through the Pacific Northwest next Sunday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 22 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 57 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 11 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 FOR WILDFIRE SMOKE UNTIL 5 PM TODAY FOR DOUGLAS, KLAMATH, AND LAKE COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT FOR WILDFIRE SMOKE UNTIL 5 PM TODAY FOR CROOK, DESCHUTES, GRANT, JEFFERSON, AND WHEELER COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT FOR WILDFIRE SMOKE UNTIL 5 PM TODAY FOR THE CASCADES OF LANE COUNTY.
- A RED FLAG WARNING IS IN EFFECT FOR LIGHTNING UNTIL 9 PM MDT TONIGHT FOR THE BURNS BLM, THE VALE BLM, AND THE BAKER VALLEY.
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 likely (70%) and a slight (20%) chance of thunderstorms, a good (50%) chance of showers late tonight (under 0.10 in. of rain possible, more in storms),
- A mix of clouds and sun with a good (50%) chance of showers and a bit warmer Thursday, partly cloudy in the evening, mostly clear late Thursday night,
- Mostly sunny and a bit warmer Friday, partly cloudy in the evening, mostly cloudy late at night,
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Saturday, then mostly cloudy with a (40%) chance of showers Saturday night.
- lows 54-48 warming to 52 Saturday night highs 73-77 cooling to 74 Saturday.
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Sunday and in the evening, partly cloudy with a good (50%) chance of showers late Sunday night,
- Mostly cloudy with a good (50%) chance of showers Monday, a good (50%) chance of showers at night,
- Mostly cloudy and a bit cooler with showers likely (70%) Tuesday, showers Tuesday night,
- Mostly cloudy with AM showers likely (70%), then partly cloudy and a bit warmer with showers likely (70%) Wednesday afternoon.
- highs 72-68 warming back to 72 Wednesday lows 48-52. (seasonal averages high 80 low 49)
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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 65 degrees warming to 73 degrees by the end of the game.
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Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with a (40%) chance of early evening showers and thunderstorms (0.50 in. of rain possible), a (40%) chance of showers tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a (30%) chance of AM showers, mostly cloudy and a bit warmer Thursday afternoon, mostly clear Thursday night,
- Some AM clouds, sunny and a bit warmer Friday afternoon, mostly clear in the evening, partly cloudy late at night,
- Partly cloudy and a bit cooler Saturday and in the evening, then mostly cloudy with a slight (20%) chance of showers late Saturday night.
- lows 56-53 warming back to 56 Saturday night highs 72-79 cooling to 76 Saturday. .
- Mostly cloudy and cooler with a slight (20%) chance of showers and cooler Sunday, a slight (20%) chance of showers Sunday night,
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Monday, a slight (20%) chance of showers at night,
- Mostly cloudy with showers and a bit cooler Tuesday, showers Tuesday night,
- Then mostly cloudy and a bit warmer with a (40%) chance of showers Wednesday.
- highs 69-72 cooling back to 69 Tuesday warming back to 72 Wednesday lows 52-54. (seasonal averages high 82 low 53)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with a (30%) chance of showers tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a slight (20%) chance of AM coastal showers and just partly cloudy Thursday afternoon while mostly cloudy with a (30%) chance of AM inland showers and just mostly cloudy inland Thursday afternoon, mostly clear in the evening, partly cloudy late Thursday night,
- Some AM clouds, sunny and a bit warmer Friday afternoon, partly cloudy in the evening, mostly cloudy late at night,
- Mostly cloudy start, partly cloudy and a bit cooler Saturday afternoon, then mostly cloudy with a slight (20%) chance of showers late Saturday night.
- lows 56-52 warming to 55 Saturday night highs 66-68 cooling back to 66 Friday night.
- Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy and a bit cooler with a slight (20%) chance of showers Sunday afternoon, partly cloudy with a slight (20%) chance of showers Sunday night,
- Partly cloudy with a slight (20%) chance of showers Monday, mostly cloudy with a slight (20%) chance of showers at night,
- Mostly cloudy with showers and a bit cooler Tuesday, showers Tuesday night,
- Then mostly cloudy and a bit warmer with a good (50%) chance of showers Wednesday.
- highs 63-60 warming back to 62 Wednesday lows 52-54. (seasonal average high 67 low 52)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with showers and a (40%) chance of thunderstorms tonight,
- Mostly cloudy with a good (50%) chance of AM showers, a mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Thursday afternoon, just partly cloudy Thursday night,
- Sunny and warmer Friday, mostly clear in the evening, partly cloudy late at night,
- Mostly sunny and a bit cooler Saturday, partly cloudy with a slight (20%) chance of evening showers, then mostly cloudy with a slight (20%) chance of showers Saturday night.
- snow level 8,000 ft. tonight, 7,500 ft. Thursday, free air freezing level 12,000 ft. rising to 13,000 ft. Thursday night, 13,000 ft. Friday and Friday night, 12,000 ft. Saturday, then snow level above 8,000 ft. Saturday night.
- lows 39-36 warming to 42 Friday night cooling to 40 Saturday night highs 53-64 cooling to 60 Saturday.
- Mostly cloudy and a bit cooler with a showers likely (70%) Sunday, mostly cloudy with a good (50%) chance of showers Sunday night,
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Monday afternoon and at night,
- Mostly cloudy and a bit cooler with showers likely (70%) Tuesday, showers likely (70%) Tuesday night,
- Mostly cloudy and a bit warmer with showers likely (70%) Wednesday.
- snow level 8,000 ft. Sunday, above 8,000 ft. Monday, 8,000 ft. Monday night, 8,000 ft. Tuesday, above 8,000 ft. Tuesday night, then 8,000 ft. Wednesday.
- highs 53-49 warming to 52 Wednesday lows near 37.