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 Thursday through Monday show a complex frontal system sliding in Thursday. A complex frontal system will be pushing into the coast Saturday and Saturday night, then a frontal system will be approaching the coast next Monday.
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 NOON TODAY FOR THE NORTH OREGON COAST RANGE LOWLANDS, CENTRAL OREGON COAST RANGE LOWLANDS, LOWER COLUMBIA RIVER, TUALATIN VALLEY, PORTLAND WEST HILLS AND CHEHALEM MOUNTAIN, INNER PORTLAND METRO, WEST CENTRAL WILLAMETTE VALLEY, EAST CENTRAL WILLAMETTE VALLEY, THE BENTON COUNTY LOWLANDS, THE LINN COUNTY LOWLANDS, AND THE LANE COUNTY LOWLANDS.
- A DENSE FOG ADVISORY IS IN EFFECT FOR THE CLATSOP COUNTY COAST THE TILLAMOOK COUNTY COAST, AND THE CENTRAL COAST OF OREGON.
- A DENSE FOG ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR THE OREGON LOWER TREASURE VALLEY.
- A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT FROM THIS EVENING THROUGH TUESDAY 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:
- Patchy AM fog, a mix of clouds and sun and cooler this afternoon, mostly cloudy with patchy dense fog tonight,
- Patchy dense AM fog, mostly cloudy Tuesday afternoon, mostly cloudy with patchy dense fog at night,
- A mix of clouds and sun and a bit warmer Wednesday, then mostly cloudy with a good (50%) chance of rain Wednesday night.
- highs 40-48 lows 29-35.
- Mostly cloudy with a good (50%) chance of rain Thursday and Thursday night,
- Mostly cloudy and a bit warmer with a good (50%) chance of rain Friday, rain likely (70%) at night,
- Mostly cloudy and a bit warmer with rain Saturday, rain Saturday night,
- Then mostly cloudy and a bit cooler with rain likely (70%) Sunday.
- highs 47-50 cooling to 48 Sunday lows 37-40. (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: YELLOW – Caution is advised, be prepared to stop burning wood if the advisory changes to Red.
Oakridge and Westfir: YELLOW – Caution is advised, be prepared to stop burning wood if the advisory changes to Red.
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:
- Patchy AM fog, sunny and cooler this afternoon, mostly clear this evening, mostly cloudy with areas of fog late tonight,
- Patchy AM fog, mostly cloudy and a bit warmer Tuesday, mostly cloudy with areas of fog at night,
- Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer Wednesday afternoon, mostly cloudy with a slight (20%) chance of rain Wednesday night.
- highs 44-52 lows 30-38.
- Mostly cloudy with a (30%) chance of rain Thursday and Thursday night,
- Mostly cloudy with a (40%) chance of rain Friday, rain at night,
- Mostly cloudy with rain Saturday, rain Saturday night,
- Mostly cloudy with AM rain likely (70%), then a good (50%) chance of rain Sunday afternoon.
- highs near 50 lows 38-42 cooling to 40 Sunday. (seasonal averages high 48 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Sunny today, clear this evening, partly cloudy late tonight,
- Mostly cloudy and a bit warmer Tuesday, mostly cloudy at night,
- Partly cloudy and warmer Wednesday, then mostly cloudy with a (30%) chance of rain Wednesday night.
- highs 55-59 lows 35-42.
- Mostly cloudy and a bit cooler with a good (50%) chance of rain Thursday, a (40%) chance of rain Thursday night,
- Mostly cloudy with a good (50%) chance of AM rain, rain likely (70%) and a bit warmer Friday, evening rain likely (70%), rain late at night,
- Mostly cloudy and a bit cooler with rain Saturday and in the evening, rain likely (70%) late Saturday night,
- Mostly cloudy with AM rain likely (70%), then a good (50%) chance of rain Sunday afternoon.
- highs 56-57 cooling back to 56 Saturday and Sunday lows 39-42. (seasonal averages high 53 low 41)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Sunny and a bit warmer today, mostly clear tonight,
- Mostly sunny and a bit warmer Tuesday, mostly cloudy at night,
- Mostly sunny Wednesday, then mostly cloudy with a good (50%) chance of rain and snow Wednesday night.
- free air freezing level 5,000 ft. rising to 7,000 ft. this afternoon, 7,500 ft. rising to 8,000 ft. tonight, 9,000 ft. rising to 11,000 ft. Tuesday afternoon, 11,000 ft. falling to 10,00 ft. late Tuesday night, 10,000 ft. Wednesday, then snow level 4,500 ft. Wednesday night.
- highs 36-45 cooling to 44 Wednesday lows 22-32 cooling to 27 Wednesday night.
- Mostly cloudy with a good (50%) chance of AM rain and snow, a mix of clouds and sun and a bit cooler with a (50%) chance of rain and snow Thursday night,
- Mostly cloudy with a good (50%) chance of rain and snow Friday, rain and snow likely (70%) at night,
- Mostly cloudy and a bit cooler with rain and snow Saturday, snow and rain Saturday night,
- Then rain and snow likely (70%) and a bit cooler Sunday.
- snow level 4,500 ft. Thursday, 4,000 ft. Thursday night and Friday, 4,500 ft Friday night and Saturday, then 4,000 ft. Saturday night and Sunday.
- highs 42-34 Friday lows 28-25 warming to 27 Friday night.