Sep
09.
Here is my weekly weather quiz question. What is a “Squall?”
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An Upper Level Low Pressure Trough gives us onshore flow for a while. The graphics for days 1-3 show a cold frontal system pushing through the Pacific Northwest Wednesday. The graphics for days 3-7 Friday through Tuesday 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 33 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 52 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 20 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 WEDNESDAY FOR DOUGLAS, KLAMATH, AND LAKE COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT FOR WILDFIRE SMOKE UNTIL 5 PM WEDNESDAY FOR CROOK, DESCHUTES, GRANT, AND JEFFERSON COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT FOR WILDFIRE SMOKE UNTIL 2 AM WEDNESDAY FOR HARNEY COUNTY.
- AN AIR QUALITY ADVISORY IS IN EFFECT FOR WILDFIRE SMOKE UNTIL 5 PM WEDNESDAY FOR THE CASCADES OF LANE COUNTY.
- A FIRE WEATHER WATCH IS IN EFFECT FOR LIGHTNING FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING 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 sunny and a bit cooler today, becoming mostly cloudy with showers and a slight (20%) chance of thunderstorms tonight (0.25 in. of rain possible, more in storms),
- Mostly cloudy and cooler with showers and a slight (20%) chance of thunderstorms Wednesday (0.50 in. of rain possible), evening showers, a slight (20%) chance of showers late at night (under 0.10 in. of rain possible),
- A mix of clouds and sun and a bit warmer with a good (50%) chance of showers Thursday, partly cloudy in the evening, then mostly clear late Thursday night.
- highs 82-69 warming to 73 Thursday lows 54-49.
- Mostly sunny and a bit warmer Friday, partly cloudy Friday night,
- A mix of clouds and sun Saturday, mostly cloudy at night,
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Sunday, mostly cloudy with a (40%) chance of showers Sunday night,
- Then a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Monday.
- highs 76-72 lows near 50. (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 74 degrees by the end of the game.
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Forecast for the Umpqua Valley including Roseburg:
- Partly cloudy and a bit cooler today, partly cloudy with a (30%) chance of evening showers, mostly cloudy and cooler with a good (50%) chance of showers and a slight (20%) chance of thunderstorms late tonight (under 0.10 in. of rain possible),
- Mostly cloudy and cooler with showers and a slight (20%) chance of thunderstorms Wednesday and in the evening (0.50 in. of rain possible), a good (50%) chance of showers late at night (0.10 in. of rain possible),
- Mostly cloudy with a (40%) chance of AM showers, partly cloudy and a bit warmer with a (30%) chance of showers Thursday afternoon, then mostly clear Thursday night.
- highs 84-69 lows 55-52.
- Mostly sunny sunny and a bit warmer Friday, partly cloudy Friday night,
- Partly cloudy Saturday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday, mostly cloudy in the evening, partly cloudy late Sunday night,
- Then mostly cloudy and a bit cooler Monday.
- highs 78-73 lows near 52. (seasonal averages high 82 low 54)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with patchy AM fog, partly cloudy and a bit cooler this afternoon, partly cloudy with a slight (20%) chance of evening coastal thunderstorms, with coastal showers likely (70%) and a slight (20%) chance of thunderstorms late tonight while mostly cloudy inland showers likely (70%) and a slight (20%) chance of thunderstorms tonight (0.10 in. of rain possible),
- Mostly cloudy with showers with a slight (20%) chance of thunderstorms Wednesday (0.25 in. of rain possible), evening showers likely (70%) with a slight (20%) chance of thunderstorms, a good (50%) chance of showers late at night (under 0.10 in. of rain possible),
- Mostly cloudy with (40%) chance of AM showers, partly cloudy with a (30%) chance of showers Thursday afternoon, mostly clear Thursday night.
- highs near 65 lows 56-53.
- Mostly sunny Friday afternoon, partly cloudy with Friday night,
- Partly cloudy with Saturday, mostly cloudy with a slight (20%) chance of showers at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday, mostly cloudy in the evening, partly cloudy late Sunday night,
- Then mostly cloudy and a bit cooler Monday.
- highs 65-62 lows 54-52. (seasonal average high 67 low 52)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- AM haze with areas of smoke, mostly sunny and a bit cooler today, mostly cloudy with a good (50%) chance of evening showers, showers late tonight,
- Mostly cloudy and cooler with showers and a slight (20%) chance of thunderstorms Wednesday afternoon, showers at night,
- Mostly cloudy with a good (50%) chance of AM showers, partly cloudy and a bit warmer with a good (50%) chance of showers Thursday afternoon, then just partly cloudy Thursday night.
- free air freezing level 13,000 ft. today, snow level above 8,000 ft. tonight, 8,000 ft. Wednesday, 7,500 ft. Wednesday night, 8,000 ft. Thursday, then free air freezing level 12,000 ft. Thursday night.
- highs 69-48 warming to 52 Thursday lows 40-36.
- Mostly sunny and warmer Friday, partly cloudy in the evening, mostly cloudy late Friday night,
- Mostly sunny and a bit cooler Saturday, mostly cloudy at night,
- Mostly cloudy with a (40%) chance of AM showers, partly cloudy and a bit cooler with a (40%) chance of showers Sunday afternoon, mostly cloudy with a (40%) chance of showers Sunday night,
- Then a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Monday.
- free air freezing level 13,000 ft. Friday and Friday night, 12,000 Saturday, 13,000 ft. Saturday night, snow level above 8,000 ft. Sunday and Sunday night, then 8,000 ft. Monday.
- highs 64-54 lows 42-38.