Here is my weekly weather quiz question. What is a “Tornado Family “?
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An Upper Level High Pressure Ridge (“Arch” shape) still effects the Pacific Northwest. The graphics for days 1-3 show a complex frontal system moving over Oregon tonight and Saturday with another front close behind it. The graphics for days 3-7 Monday through Friday show surface high pressure Tuesday through Wednesday, then a complex frontal system slides in next Thursday.
Note: Ski Report: Willamette Pass Ski announced it is open now for early season skiing every day of the week starting Tuesdays, Hoodoo will be opening open 9am til 4pm today through December 8th, Mt. Ashland announced opening day will be today. Check their Web sites for specific mountain conditions and hours of operation.
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ADVISORIES:
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 AM SATURDAY FOR THE BENTON COUNTY LOWLANDS, THE LINN COUNTY LOWLANDS, AND THE LANE COUNTY LOWLANDS.
- A DENSE FOG ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR THE BENTON COUNTY LOWLANDS, THE LINN COUNTY LOWLANDS, AND THE LANE COUNTY LOWLANDS
- A FREEZING FOG ADVISORY IS IN EFFECT UNTIL 11AM TODAY FOR THE THE BENTON COUNTY LOWLANDS, THE LINN COUNTY LOWLANDS, THE LANE COUNTY LOWLANDS.
- A FREEZING FOG ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON AND NORTH CENTRAL OREGON.
- A FREEZING FOG ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR THE JOHN DAY BASIN.
- A FREEZING FOG ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR CENTRAL OREGON.
- AN AIR QUALITY ALERT IS IN EFFECT FROM 4 PM TODAY UNTIL 4 AM SATURDAY FOR LAKE COUNTY.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 AM SATURDAY FOR THE NORTH OREGON COAST RANGE LOWLANDS, THE CENTRAL OREGON COAST RANGE LOWLANDS, THE LOWER COLUMBIA RIVER, THE TUALATIN VALLEY, THE WEST CENTRAL WILLAMETTE VALLEY, THE EAST CENTRAL WILLAMETTE VALLEY, THE BENTON COUNTY LOWLANDS, THE LINN COUNTY LOWLANDS, THE CLACKAMAS COUNTY CASCADE FOOTHILLS, THE THE CASCADE FOOTHILLS OF MARION AND LINN COUNTIES, AND THE LANE COUNTY CASCADE FOOTHILLS.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 AM SATURDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 5 PM SATURDAY IN THE VALLEYS FOR THE OREGON LOWER TREASURE VALLEY.
- AN AIR QUALITY ALERT IS IN EFFECT FROM 4 PM TODAY UNTIL 4 AM SATURDAY FOR LAKE COUNTY.
- A DENSE FOG ADVISORY IS IN EFFECT UNTIL 2 PM FRIDAY IN THE VALLEYS FOR THE OREGON LOWER TREASURE VALLEY.
- A DENSE FOG ADVISORY IS IN EFFECT UNTIL 4 AM SATURDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 AM SATURDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 5 PM MST SATURDAY IN VALLEYS FOR HARNEY COUNTY, BAKER COUNTY. AND MALHEUR COUNTY.
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:
- Widespread dense AM fog with areas of freezing fog, a mix of clouds and sun and a bit warmer with patchy fog this afternoon (assuming the low clouds and fog clear), patchy evening fog with a slight (20%) chance of rain, rain late tonight,
- Mostly cloudy and a bit warmer with rain Saturday, rain at night,
- Mostly cloudy with AM rain likely (70%), partly cloudy and a bit cooler with rain likely (70%) Sunday afternoon, then just partly cloudy Sunday night,
- highs 42-53 cooling back to 49 Sunday lows 42-34.
- Mostly sunny and a bit cooler Monday, partly in the evening, mostly cloudy late Monday night,
- A mix of clouds and sun Tuesday, mostly cloudy at night,
- Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy and a bit warmer with a slight (20%) chance of rain Wednesday afternoon, mostly cloudy with a good (50%) chance of rain Wednesday night,
- Then mostly cloudy and a bit warmer with showers likely (70%) Thursday.
- highs 44-49 lows 30-36. (seasonal averages high 48 low 35)
Your College Football Weather Forecast:
Big 1G Championship Game-Saturday December 7 th:
Ducks vs Penn State Nittany Lions at Lucas Oil Stadium, Indianapolis, Indiana- Game time: 5:00 pm PST- Preliminary weather Forecast: Clear to Clear to partly cloudy 38 degrees, and a bit breezy, cooling as the game continues.
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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:
- Partly cloudy with areas of AM fog, partly cloudy and a bit cooler this afternoon, mostly cloudy with rain late tonight,
- Mostly cloudy and a bit warmer with rain Saturday, evening rain likely (70%), a good (50%) chance of rain late Saturday night,
- Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy and a bit cooler with a (30%) chance of rain Sunday afternoon, then partly cloudy and colder late Sunday night.
- highs 47-52 cooling to 48 Sunday lows 44-34.
- Some AM clouds, sunny Monday afternoon, partly cloudy Monday night,
- Partly cloudy and a bit warmer Tuesday, mostly cloudy at night,
- Mostly cloudy start, partly cloudy and a bit warmer with a slight (20%) of rain Wednesday afternoon, mostly cloudy with a slight (20%) chance of rain Wednesday night,
- Then mostly cloudy and a bit cooler with a good (50%) chance of rain Thursday.
- highs 50-52 lows 32-39. (seasonal averages high 49 low 38)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with areas of AM coastal fog, just mostly cloudy and a bit cooler this afternoon, mostly cloudy with a slight (20%) chance of evening coastal rain with coastal rain late tonight while a (30%) chance of inland rain late tonight,
- Mostly cloudy and a bit cooler with rain Saturday, evening rain likely (70%), a good (50%) chance of rain late at night,
- Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy and a bit cooler with a slight (20%) chance of rain Sunday afternoon, then becoming mostly clear Sunday night.
- highs 59-54 lows 46-36.
- Mostly sunny and a bit warmer Monday, partly cloudy Monday night,
- Partly cloudy and a bit warmer Tuesday, mostly cloudy at night,
- Mostly cloudy start, partly cloudy with a slight (20%) of rain Wednesday afternoon, mostly cloudy with a slight (20%) chance of rain Wednesday night,
- Then mostly cloudy with a good (50%) chance of rain Thursday.
- highs near 58 lows 36-42. (seasonal averages high 53 low 41)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly sunny and a bit warmer today, becoming mostly cloudy with rain likely (70%) late tonight,
- Mostly cloudy and a bit cooler with rain Saturday, rain and snow at night,
- Mostly cloudy with snow with rain likely (70%) and cooler Sunday, mostly cloudy with a slight (20%) chance of evening rain and snow, then partly cloudy with a slight (20%) chance of snow and slight (20%) chance of rain and snow late Sunday night.
- free air freezing 12,000 ft. this afternoon, snow level above 8,000 ft. late tonight, above 8,000 ft. falling to 6,500 ft. Saturday afternoon, then 3,500 ft. Saturday night through Sunday night.
- highs 45-48 cooling to 42 Saturday lows 34-18.
- Sunny and a bit warmer Monday, mostly clear Monday night,
- Mostly sunny and a bit warmer Tuesday, mostly cloudy at night,
- A mix of clouds and sun and a bit warmer with a slight (20%) chance of rain and snow Wednesday, mostly cloudy with a good (50%) chance of rain and snow Wednesday night,
- Then mostly cloudy and a bit cooler with rain and snow showers likely (70%) Thursday.
- free air freezing level 5,500 ft. Monday, 7,000 ft. Monday night, 11,000 ft. Tuesday and Tuesday night, then snow level 5,500 ft. Wednesday through Thursday.
- highs 32-40 lows 20-27.