Dec
31.
Here is my weekly weather quiz question. What is “Zero Datum?”
The Jet Stream is sending an Atmospheric River full of moisture well south of the Pacific Northwest. The graphics for days 1-3 show a frontal system offshore then moving in. The graphics for days 3-7 Friday through Tuesday show more frontal activity continuing through the period.
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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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 41 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 29 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 41 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM WEDNESDAY FOR THE CASCADES OF MARION AND LINN COUNTIES, AND THE CASCADES OF LANE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM WEDNESDAY FOR THE NORTH OREGON CASCADES.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM WEDNESDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL NOON WEDNESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM WEDNESDAY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM WEDNESDAY FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL NOON MST WEDNESDAY FOR THE OREGON LOWER TREASURE VALLEY.
- A FLOOD WARNING IS IN EFFECT UNTIL THURSDAY MORNING FOR THE COQUILLE RIVER AT COQUILLE AFFECTING COOS COUNTY.
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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 cloudy with evening rain, showers likely (70%) late tonight (0.10 in. of rain possible) tonight (New Year’s Eve),
- Mostly cloudy and a bit warmer with showers (0.25 in.of rain possible) Wednesday (New Year’s Day), showers Wednesday night (0.25 in.of rain possible),
- Mostly cloudy and a bit warmer with rain Thursday (0.50 in. of rain possible), evening showers, rain late at night (0.25 in. of rain possible),
- Mostly cloudy with rain Friday, then showers Friday night.
- lows 39-47 cooling to 43 Friday night highs 47-53.
- Mostly cloudy and a bit cooler with showers Saturday, showers Saturday night,
- Mostly cloudy and a bit warmer with showers likely (70%) Sunday, showers likely (70%) at night,
- Mostly cloudy with a (40%) chance of AM showers, partly cloudy and a bit cooler with a (40%) chance of showers Monday afternoon, a slight (20%) chance of showers Monday night,
- AM clouds and sun with a slight (20%) chance of showers, then mostly cloudy and a bit cooler with a slight (20%) chance of showers Tuesday afternoon.
- highs 49-52 cooling to 48 Tuesday lows 43-37 (seasonal averages high 47 low 34)
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Your College Football Weather Forecast:
Wednesday January 1, 2025:
The Ducks vs. Ohio State Buckeyes in the Rose Bowl, Pasadena, California: Game time: 2 pm. Weather Forecast; Sunny 72 degrees warming to 75 then clear and cooling throughout the game.
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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:
- Cloudy with early evening rain and snow, a good (50%) chance of late evening rain and snow, rain (0.25 in of rain possible, snow level 2,500 ft. rising to 3,000 ft. tonight) late tonight (New Year’s Eve),
- Mostly cloudy and a bit warmer with rain (0.10 in.of rain possible, snow level 3,500 ft. Wednesday) (New Year’s Day), rain Wednesday night (0.10 in.of rain possible),
- Mostly cloudy and a bit warmer with rain Thursday (0.25 in of rain possible), rain at night (0.25 in of rain possible),
- Then mostly cloudy and a bit cooler with rain Friday and in the evening, then rain likely (70%) Friday night.
- lows 39-48 cooling to 43 Friday night highs 49-55 cooling to 53 Friday.
- Mostly cloudy and a bit cooler with rain likely (70%) Saturday and Saturday night,
- Mostly cloudy with rain likely (70%) Sunday, a good (50%) chance of rain at night,
- Mostly cloudy and as bit warmer with a (30%) chance of rain Monday, partly cloudy with a slight (20%) chance of evening rain, mostly cloudy with a slight (20%) chance of rain late Monday night,
- Then mostly cloudy with a slight (20%) chance of rain Tuesday.
- highs near 52 lows 43-38. (seasonal averages high 49 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with early evening coastal rain and a slight (20%) chance of late evening rain with rain late tonight while a (30%) chance of inland evening rain and rain (0.10 in. of rain possible) late tonight (New Year’s Eve),
- Mostly cloudy with rain and a bit warmer Wednesday (0.10 in. of rain possible), rain Wednesday night (0.10 in. of rain possible),
- Mostly cloudy and a bit warmer with rain Thursday (0.50 in. of rain possible), rain at night (0.50 in. of rain possible),
- Mostly cloudy with rain Friday and Friday night.
- lows 40-44 highs 53-59 cooling to 57 Friday.
- Mostly cloudy and a bit cooler with rain likely (70%) Saturday, rain likely (70%) Saturday night,
- Mostly cloudy and a bit warmer with rain likely (70%) Sunday and in the evening, rain late at night,
- Mostly cloudy and a bit warmer with a (30%) chance of rain Monday, partly cloudy with a slight (20%) chance of rain Monday night,
- Then mostly cloudy and a bit warmer with a slight (20%) chance of rain Tuesday.
- highs 55-58 lows 44-40 (seasonal averages high 53 low 40)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with evening snow and rain, snow and rain showers (0.50 in. of rain possible, 3-7 in. of snow possible, snow possibly heavy at times late tonight) late tonight (New Year’s Eve),
- Mostly cloudy and a bit warmer with rain showers and snow showers (0.50 in. of rain possible, 1-4 in. of snow possible, snow possibly heavy at times) Wednesday (New Year’s Day), evening rain showers and snow showers (snow possibly heavy at times), showers late Wednesday night,
- Mostly cloudy and a bit warmer with rain Thursday, evening showers, rain late Thursday night,
- Mostly cloudy and a bit cooler with rain and snow showers Friday, then rain and snow showers Friday night.
- snow level 3,000 ft. tonight, 3,000 ft. rising to 4,500 ft. Wednesday, 6,000 ft. Wednesday night, 7,500 ft. Thursday, 7,000 ft. Thursday night, 6.000 ft. Friday, then 4,500 ft. Friday night.
- low 25-34 highs 32-37.
- Mostly cloudy and a bit cooler with rain and snow showers Saturday, rain and snow showers likely (70%) Saturday night,
- Mostly cloudy and a bit warmer with rain showers likely (70%) and snow showers Sunday, rain and snow showers at night,
- A mix of clouds and sun with a good (50%) chance of rain and snow showers and a bit warmer Monday, partly cloudy with a slight (20%) chance of rain and snow showers Monday night,
- Then a mix of clouds and sun with a slight (20%) chance of showers, then mostly cloudy and slightly warmer with a slight (20%) chance of showers and a bit warmer Tuesday.
- snow level 4,000 ft. Saturday, 4,500 ft. Saturday night, 5,000 ft. Sunday and Sunday night, 4,500 ft. Monday and Monday night, then 5,000 ft. Tuesday.
- highs 36-32 warming to 35 Sunday lows near 28.