Here is my weekly weather quiz question for the last time. What is “Zero Datum?” Here is the correct answer. Zero Datum: In hydrologic terms, a reference “zero” elevation for a stream or river gauge. This “zero” can be referenced (usually within ten feet of the bottom of the channel) to mean sea level, or to any other recognized datum.
The Jet Stream is still pushing fronts our way and sending plenty of moisture to the Pacific Northwest. The graphics for days 1-3 show a complex frontal system approaching the coast. The graphics for days 3-7 Wednesday through Sunday show the frontal activity through the period.
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ADVISORIES:
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY ABOVE 4,000 FT. FOR THE NORTH OREGON CASCADES, THE CASCADES OF MARION AND LINN COUNTIES, AND THE CASCADES OF LANE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY ABOVE 4,000 FT. FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A FLOOD WARNING IS IN EFFECT UNTIL LATE MONDAY AFTERNOON FOR THE JOHN DAY RIVER AT SERVICE CREEK AFFECTING WHEELER COUNTY
- A FLOOD WARNING IS IN EFFECT UNTIL LATE MONDAY EVENING 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.
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Cloudy with a slight (20%) chance of AM rain, rain and a bit warmer this afternoon (0.25 in. of rain possible), rain tonight (0.25 in. of rain possible),
- Mostly cloudy with a good (50%) chance of AM showers, a mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Monday, mostly cloudy in the evening, partly cloudy late Monday night,
- A mix of clouds and sun and a bit cooler Tuesday, then mostly cloudy Tuesday night,
- highs 53 -54 cooling to 34 Tuesday lows 47-35.
- A mix of clouds and sun a bit warmer Wednesday, partly cloudy Wednesday night,
- Mostly sunny Thursday, mostly cloudy at night,
- Mostly cloudy with a (40%) chance of AM rain, a mix of clouds and sun with a (40%) chance of rain and a bit warmer Friday afternoon, mostly cloudy with a slight (20%) chance of rain Friday night,
- Then a mix of clouds and sun and a bit cooler with a slight (20%) of showers Saturday.
- highs 48-50 lows 35-37 (seasonal averages high 47 low 34)
Your College Football Weather Forecast:
Today Wednesday January 1, 2025:
The Ducks vs. Ohio State Buckeyes in the Rose Bowl, Pasadena, California: The Ducks were beaten down by the Buckeyes 41-21.
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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 a good (50%) chance of AM rain, rain likely (70%) and a bit warmer this afternoon, evening rain, a (%) chance of rain late tonight,
- Mostly cloudy with a (40%) chance of rain and a bit cooler Monday, mostly cloudy with patchy evening fog, partly cloudy with areas of fog late at night,
- Partly cloudy with patchy AM fog, partly cloudy and a bit cooler Tuesday, partly cloudy with patchy evening fog, mostly cloudy with areas of fog late Tuesday night.
- highs 52-47 lows 46-36.
- Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer Wednesday afternoon, partly cloudy with patchy evening fog, areas of fog late Wednesday night,
- Partly cloudy with patchy AM fog, sunny and a bit warmer Thursday afternoon, patchy evening fog, areas of fog Thursday night,
- Patchy AM fog, mostly cloudy Friday afternoon, mostly cloudy with patchy evening fog, areas of fog late Friday night,
- Mostly cloudy with patchy AM fog, then becoming mostly sunny Saturday afternoon.
- highs 47-49 cooling to 48 Friday warming to49 Saturday lows 36-39. (seasonal averages high 49 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Cloudy with a good (50%) chance of AM rain, rain and a bit warmer this afternoon, rain tonight,
- Mostly cloudy with a (30%) chance of AM and just mostly cloudy and a bit warmer Monday afternoon while a (40%) chance of inland rain and a bit warmer Monday afternoon, partly cloudy with patchy evening fog, partly cloudy with areas of fog late Monday night,
- AM fog, partly cloudy and a bit warmer Tuesday, partly cloudy with patchy evening fog, then mostly cloudy with areas of fog Tuesday night.
- highs 57-58 lows 49-38 warming to 42 Tuesday night.
- Mostly cloudy with patchy AM fog, sunny and a bit warmer Wednesday afternoon, partly cloudy patchy evening fog, areas of fog at late at night,
- Patchy AM fog, sunny and a bit warmer Thursday afternoon, mostly cloudy with patchy evening fog, partly cloudy with areas of fog late at night,
- Patchy AM fog, mostly cloudy Friday afternoon and evening, areas of fog late Friday night,
- Partly cloudy with patchy AM fog, then sunny Saturday afternoon.
- highs 59-60 cooling to 53 Saturday lows 42-44 cooling to 39 Friday night (seasonal averages high 53 low 41)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with a good (50%) of AM rain and freezing rain, rain and a bit warmer with rain this afternoon (0.50 in. of rain possible, trace of ice accumulation possible), rain with a slight (20%) chance of freezing rain tonight (0.75 in. of rain possible),
- Mostly cloudy with AM showers likely (70%), a mix of clouds and sun with a good (50%) chance of showers and snow showers Monday afternoon, partly cloudy in the evening, then becoming mostly clear late Monday night,
- Mostly sunny Tuesday, mostly cloudy Tuesday night.
- snow level 6,000 ft. today, 7,000 ft. tonight, 5,500 ft. Monday Monday night, free air freezing level 8,000 ft. Tuesday, then 10,000 ft. Tuesday night.
- highs 33-36 low 34-24 warming to 28 Tuesday night.
- Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Sunny and a bit warmer Thursday, partly cloudy at night,
- A mix of clouds and sun and a bit cooler with a (40%) chance of rain and snow Friday, mostly cloudy with a (40%) chance of rain and snow Friday night,
- Mostly sunny and a bit cooler with a slight (20%) chance of rain and snow showers Saturday.
- free air freezing level 11,000 ft. Wednesday and Wednesday night, 12,000 ft. Thursday and Thursday night, snow level 7,500 ft. Friday, 5,000 ft. Friday night, then, 4,000 ft. Saturday.
- highs 36-43 lows 24-30.