Here is my new weekly weather quiz question. What is a “Tornado Vortex Signature “?
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An Upper Level High Pressure Ridge (“Arch” shape) is moving toward the Pacific Northwest as the Upper Level Low Pressure leaves.The graphics for days 1-3 show no frontal systems moving into or over Oregon through the period. The graphics for days 3-7 Friday through Tuesday show a complex frontal system will be pushing into the coast Saturday and Saturday night, then a frontal system will be marching through Monday with a warm front just offshore next Tuesday.
Note: Ski Report: Willamette Pass, Hoodoo, and Mt. Ashland are all open for the ski season. Check their Web sites for specific mountain conditions and hours of operation.
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ADVISORIES:
- A DENSE FOG ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE LOWER COLUMBIA RIVER, THE TUALATIN VALLEY, PORTLAND WEST HILLS AND CHEHALEM MOUNTAIN, EAST CENTRAL WILLAMETTE VALLEY, BENTON COUNTY LOWLANDS, LINN COUNTY LOWLANDS, AND THE LANE COUNTY LOWLANDS.
- A DENSE FOG ADVISORY IS IN EFFECT UNTIL NOON TODAY FOR EASTERN COLUMBIA GORGE OF OREGON, LOWER COLUMBIA BASIN OF OREGON, THE NORTHERN BLUE MOUNTAINS OF OREGON, AND THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON.
- A DENSE FOG ADVISORY IS IN EFFECT UNTIL NOON MST TODAY FOR THE OREGON LOWER TREASURE VALLEY.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 2 PM MST THURSDAY FOR THE OREGON LOWER TREASURE VALLEY.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 2 PM MST THURSDAY FOR HARNEY COUNTY, BAKER COUNTY, AND MALHEUR COUNTY.
- A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT THROUGH THIS AFTERNOON FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
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.
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- AM clouds and sun with areas of dense fog, mostly cloudy with patchy dense fog this afternoon, cloudy with patchy dense fog tonight,
- Cloudy with patchy dense AM fog, a bit warmer with a (30%) chance of rain Wednesday afternoon, cloudy with a good (50%) chance of evening rain, rain likely (70%) late at night,
- Mostly cloudy and a bit warmer with a rain likely (70%) Thursday, then cloudy with rain likely (70%) Thursday night,
- highs 39-47 lows 34-37.
- Mostly cloudy and a bit cooler with a good (50%) chance of rain Friday, rain Friday night,
- Mostly cloudy and a bit warmer with rain Saturday, rain at night,
- Mostly cloudy and a bit cooler with rain likely (70%) Sunday, a good (50%) chance of rain Sunday night,
- Then mostly cloudy and a bit cooler with a good (50%) chance of rain Monday.
- highs 46-52 cooling to 47 Monday lows 40-42 cooling to 38 Sunday night. (seasonal averages high 47 low 35)
Your College Football Weather Forecast:
Big 10 Championship Game-Saturday December 7 th:
Ducks vs Penn State Nittany Lions at Lucas Oil Stadium, Indianapolis, Indiana- Game time: 5:00 pm PST- The Ducks beat the Penn State Nittany Lions 45-37 to win the Big 10 Championship trophy.
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HOME WOOD HEATING ADVISORY:
Eugene & Springfield: GREEN – The burning wood is allowed.
Oakridge and Westfir: GREEN – The burning wood is allowed.
The use of pellet stoves is always allowed.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with patchy dense AM fog and freezing fog, partly cloudy and a bit cooler this afternoon, mostly cloudy with areas of fog tonight,
- Mostly cloudy with patchy AM fog, a bit warmer with a (30%) chance of rain Wednesday afternoon, mostly cloudy with rain likely (70%) at night,
- Mostly cloudy with a (40%) chance of rain Thursday and in the evening, then a (40%) chance of rain and snow late Thursday night.
- highs 45-50 lows 34-39 cooling to 37 Thursday night.
- Mostly cloudy with a (40%) chance of AM rain, rain and a bit cooler Friday afternoon, rain Friday night,
- Mostly cloudy and a bit warmer with rain Saturday, rain likely (70%) at night,
- Mostly cloudy and a bit cooler with a good (50%) chance of rain Sunday, a (40%) chance of rain Sunday night,
- Mostly cloudy with a good (50%) chance of AM rain, then rain likely (70%) and a bit cooler Monday afternoon.
- highs 49-46 lows 42-35. (seasonal averages high 48 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy with patchy AM inland dense fog, mostly cloudy and a bit warmer this afternoon, cloudy with evening coastal rain likely (70%) and coastal rain late tonight while a good (50%) chance of inland evening rain and inland rain likely (70%) late tonight,
- Partly cloudy and a bit warmer with a (30%) chance of rain Wednesday, cloudy with a evening coastal rain likely (70%) and coastal rain late at night while a good (50%) chance of inland evening rain and inland rain likely (70%) late at night,
- Mostly cloudy and a bit cooler with a good (50%) chance of rain Thursday, then a good (50%) chance of rain Thursday night.
- highs 56-59 cooling to 52 Thursday lows 38-42 cooling to 39 Thursday night.
- Mostly cloudy with a (50%) chance of AM rain, rain and a bit warmer Friday afternoon, rain Friday night,
- Mostly cloudy and a bit cooler with rain Saturday, rain at night,
- Mostly cloudy with AM rain likely (70%), a good (50%) chance of rain Sunday afternoon and Sunday night,
- Then mostly cloudy with rain likely (70%) Monday.
- highs 53-50 lows 43-45 cooling back to 42 Sunday night. (seasonal averages high 53 low 41)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County
- Mostly sunny today, mostly cloudy tonight,
- Mostly cloudy and a bit cooler with a slight (20%) chance of rain Wednesday afternoon, a good (50%) chance of evening rain and a slight (20%) chance of snow, a good (50%) chance of snow late at night,
- Mostly cloudy with rain and snow likely (70%) and a bit cooler Thursday, then a good (50%) chance of rain and snow Thursday night,
- free air freezing level 10,000 ft. rising to 11,000 ft. this afternoon, 10,000 ft. tonight, snow level 3,500 ft. Wednesday, 4,000 ft. Wednesday night, 4,000 ft. Thursday, then 3,500 ft. Thursday night.
- highs 42-33 lows 28-24.
- Mostly cloudy with rain and snow likely (70%) Friday, rain and snow Friday night,
- Mostly cloudy and a bit warmer with rain and snow Saturday, snow and rain at night,
- Mostly cloudy and a bit cooler with snow and rain and snow likely (70%) Sunday, rain and snow likely (70%) Sunday night,
- Then mostly cloudy and a bit warmer with rain and snow likely (70%) Monday.
- snow level 3,500 ft. Friday, 4,500 ft Friday night and Saturday, 4,000 ft. Saturday night and Sunday, 4,500 ft. Sunday night, then 5,000 ft. Monday.
- highs 33-35 cooling to 32 Sunday warming to 34 Monday lows 29-25.