Here is my new weekly weather quiz question. What is the “Thermocline “?
____________
A split Split Jet Stream (North and South of us) brings plenty of sunshine, but cold overnight temperatures, through the weekend. The graphics for days 1-3 show no frontal systems. The graphics for days 3-7 Sunday through Thursday show no serious frontal activity over the Pacific Northwest through the period, but a complex frontal system will be well to our Northwest next Thursday.
Note: Ski Report: Willamette Pass Ski announced it will be open again tomorrow Friday November 29th for early season skiing, Hoodoo is not open yet, Mt. Ashland is not open yet. Check their Web sites for any new updates.
________________
ADVISORIES:
- A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 9 AM FRIDAY FOR THE SOUTH CENTRAL OREGON COAST.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 PM MONDAY FOR THE PORTLAND WEST HILLS AND CHEHALEM MOUNTAIN.
- AN AIR STAGNATION ADVISORY IS IN EFFECT FROM 9PM MST TONIGHT UNTIL 9 PM MST THURSDAY IN VALLEYS FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 PM TUESDAY FOR THE CENTRAL OREGON COAST RANGE LOWLANDS, 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 FOR INNER PORTLAND METRO, EAST PORTLAND METRO, AND OUTER SOUTHEAST PORTLAND METRO.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 PM TUESDAY FOR THE NORTH OREGON COAST RANGE LOWLANDS, THE LOWER COLUMBIA RIVER, AND THE TUALATIN VALLEY.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 PM TUESDAY FOR THE WEST CENTRAL WILLAMETTE VALLEY AND THE EAST CENTRAL WILLAMETTE VALLEY.
- A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT FROM SATURDAY EVENING THROUGH SUNDAY 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:
- Partly cloudy with patchy evening frost, patchy dense fog and frost late tonight,
- Patchy dense AM fog, mostly sunny and slightly warmer Friday, partly cloudy with patchy dense fog and frost at night,
- Clouds and sun with patchy dense AM fog and scattered frost, sunny and slightly warmer Saturday afternoon, mostly clear with areas of evening frost and patchy dense fog, partly cloudy with patchy frost late Saturday night.
- lows near 29 highs 43-44.
- Patchy dense AM fog and frost, mostly sunny sunny Sunday afternoon, mostly cloudy in the evening, partly cloudy with patchy fog and frost late Sunday night,
- Patchy AM frost, mostly sunny and a bit warmer Monday, partly cloudy with patchy fog and frost Monday night,
- Mostly sunny and a bit warmer Tuesday, partly cloudy with patchy frost at night,
- Patchy AM frost, mostly sunny and a bit warmer Wednesday, mostly cloudy with a slight (20%) chance of rain Wednesday night,
- Then mostly cloudy and a bit warmer with a (40%) chance of rain Thursday.
- highs 47-54 lows 30-38. (seasonal averages high 50 low 36)
Your College Football Weather Forecast:
Saturday November 30th:
Ducks vs Washington Huskies at Autzen Stadium, – Game time: 4:30 pm- Weather forecast: Mostly sunny then mostly clear, 44 degrees and falling throughout the game. It will be quite chilly so dress appropriately.
Tomorrow Friday November 29th:
Beavers vs Boise State Broncos at Maverik Stadium, Boise, Idaho: Game time 9:00 am- Weather forecast: Mostly sunny 32 degrees rising to 40 by the end of the game. Fans will babe to bundle up to keep warm.
________________
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)
________________
Forecast for the Umpqua Valley including Roseburg:
- Mostly clear with early evening frost, widespread frost and patchy fog late this evening and late tonight,
- Widespread AM frost and patchy fog, sunny and a bit cooler Friday afternoon, mostly clear with widespread frost Friday night and patchy fog late Friday night,
- Widespread AM frost and patchy fog, sunny and a bit warmer Saturday afternoon, mostly clear with patchy fog and areas of evening frost, mostly clear with patchy fog and widespread frost late at night,
- Widespread AM frost and patchy fog, partly cloudy and a bit warmer Sunday, then partly cloudy with widespread frost and patchy fog Sunday night.
- lows 30-34 highs 48-52.
- Widespread AM frost and patchy fog, sunny and a bit warmer Monday afternoon, mostly clear in the evening, partly cloudy with areas of frost late Monday night,
- Some AM clouds with widespread frost, sunny and a bit warmer Tuesday afternoon, partly cloudy with areas of frost at night,
- Areas of AM frost, partly cloudy and a bit warmer with a slight (20%) chance of rain Wednesday afternoon, mostly cloudy with a slight (20%) chance of rain Wednesday night,
- Then mostly cloudy with a (30%) chance of rain Thursday.
- highs 54-56 lows 35-42. (seasonal averages high 50 low 39)
____________
Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear with patchy evening coastal fog, areas of frost late tonight while patchy inland fog with areas of late evening frost and widespread inland frost late tonight,
- Areas of AM coastal frost while widespread inland frost and patchy fog, sunny and a bit warmer Friday afternoon, mostly clear with areas of evening frost, widespread coastal frost late Friday night while widespread inland frost and patchy fog late Friday night,
- Widespread AM frost and patchy fog, sunny and a bit warmer Saturday afternoon, mostly clear with patchy evening coastal frost and patchy coastal fog late Saturday night while inland areas of frost at night,
- Widespread inland AM frost, partly cloudy and a bit warmer Sunday afternoon, then partly cloudy with patchy fog at night and areas of frost late Sunday night.
- lows 32-30 warming to 35 Sunday night highs 53-57.
- Areas of AM frost and patchy fog, sunny Monday afternoon, mostly clear in the evening, partly cloudy with areas of frost Monday night,
- Partly cloudy with areas of AM frost, sunny and a bit warmer Tuesday afternoon, partly cloudy at night,
- Partly cloudy and a bit warmer with a slight (20%) chance of rain Wednesday, mostly cloudy with a (30%) chance of rain Wednesday night,
- Then mostly cloudy with a (30%) chance of rain Thursday.
- highs 57-62 lows 36-43. (seasonal averages high 54 low 42)
_______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly clear tonight,
- Sunny and a bit warmer Friday, mostly clear Friday night,
- Sunny and a bit warmer Saturday, mostly clear at night,
- Sunny Sunday, then partly cloudy Sunday night.
- free air freezing level 7,000 ft. falling to 5,500 ft. late tonight, 6,000 ft. rising to 8,000 ft. Friday afternoon, 8,000 ft. rising to 9,000 ft. late Friday night, 11,000 ft. Saturday through Sunday, then 10,000 ft. Sunday night.
- lows 20-27 highs 40-44.
- Sunny and a bit warmer Monday, mostly clear Monday night,
- Mostly sunny Tuesday, partly cloudy at night,
- Mostly sunny and a bit warmer Wednesday, mostly cloudy with a (40%) chance of rain Wednesday night,
- Then mostly cloudy and slightly cooler with a (40%) chance of rain Thursday.
- free air freezing level 11,000 ft. Monday through Tuesday, 12,000 ft. Tuesday night and Wednesday, then snow level above 8,o00 ft. Wednesday night and Thursday.
- highs 45-47 cooling back to 45 Thursday lows 27-33.