Check out my latest Eugene Daily News Weather Or Not column: Not Much Winter Weather Until Now. What’s going on?
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Here is my new weekly weather quiz question. What is “Deep Percolation Loss?” The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs. Good luck.
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An Upper Level Low Pressure Trough (Shaded “U” shape with arrows) slides slowly eastward continuing the flow of colder Arctic air coming through Canada into the Northwest. Add that in the moisture that will be moving in and there’s the chance of some more snow. This time it might actually stick on the grounding the valley. The graphics for days 1-3 show the next frontal system that will be offshore Wednesday. The graphics for days 3-7 show a frontal system that will slide along the Pacific Northwest coast Sunday night through Monday.
Note: With the moisture remaining on the roadways and the cold temperatures you need to watch out for slippery road conditions. Record low temperatures are expected from the east slopes of the Cascades through Central and Eastern Oregon. This storm most likely will give us a real snowfall down to the valley floor so please drive extra carefully.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 13 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 12 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Home Wood Heating Advisory:
(Posted Daily)
Eugene-Springfield: GREEN – Burning is Allowed.
Oakridge: GREEN – Burning is Allowed.
*Note: Pellet stoves may be used anytime if they produce no visible emissions.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Advisories:
- A FREEZE WARNING IS IN EFFECT FROM MIDNIGHT TONIGHT THROUGH 9 AM TUESDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 2 PM TUESDAY UNTIL 4 AM WEDNESDAY FOR THE LOWER COLUMBIA AND THE COAST RANGE OF NORTHWEST OREGON.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 PM TUESDAY UNTIL 7 AM WEDNESDAY FOR THE UPPER HOOD RIVER VALLEY, THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE, THE NORTHERN OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 PM TUESDAY UNTIL 6 AM WEDNESDAY FOR THE GREATER PORTLAND METRO AREA AND THE CENTRAL WILLAMETTE VALLEY.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 6 PM TUESDAY UNTIL 7 AM WEDNESDAY FOR THE CENTRAL COAST RANGE OF WESTERN OREGON AND THE SOUTH WILLAMETTE VALLEY.
- 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:
- Partly cloudy and cold with a slight (20%) chance of snow late tonight,
- Mostly cloudy with a slight (20%) chance of AM snow, a bit warmer with rain and snow likely (70%) Tuesday afternoon and evening (under 0.10 in. of rain possible, 1 in. of snow possible), rain and snow late at night (under 0.10 in. of rain possible, 2 in. of snow possible),
- A slight (20%) chance of AM snow, a mix of clouds and sun Wednesday afternoon, mostly cloudy with a slight (20%) chance of evening rain and snow showers, a slight (20%) chance of snow showers late Wednesday night,
- Mostly cloudy with a (40%) chance of rain and snow showers Thursday, then just partly cloudy at night.
- lows 25-30 cooling back to 25 Thursday night highs near 42.
- A mix of clouds and sun with a (30%) chance of rain and snow Friday, mostly cloudy with a good (50%) chance of rain Friday night,
- Cloudy and a bit warmer with rain likely (70%) Saturday, mostly cloudy with a good (50%) chance of rain at night,
- Mostly cloudy with a good (50%) chance of rain and snow and a bit warmer Sunday, rain likely (70%) Sunday night,
- Then cloudy with a good (50%) chance of rain Monday.
- highs 42-45 lows 33-36. (seasonal averages high 52 low 35)
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Forecast for Roseburg:
- Partly cloudy this evening, becoming mostly cloudy and cold with patchy freezing fog late tonight and Tuesday AM, mostly cloudy and a bit warmer with a (30%) chance of rain and snow Tuesday afternoon (snow level 200 ft.), cloudy with evening rain and snow likely (70%), rain and snow late Tuesday night (0.10 in. of rain possible, 1-2 in. of snow possible, snow level 700 ft.),
- Mostly cloudy with a (30%) chance of AM rain and snow, a (40%) chance of rain and snow showers and a bit warmer Wednesday afternoon (under 0.10 in. of rain possible, snow level 700 ft.), a slight (20%) chance of rain and snow showers at night (under 0.10 in. of rain possible, snow level 800 ft. falling to 200 ft. late at night),
- Mostly cloudy with a (40%) chance of rain and snow Thursday, partly cloudy with a slight (20%) chance of rain and snow Thursday night.
- lows 25-32 cooling to 26 Thursday night highs 42-46 cooling back to 42 Thursday.
- Partly cloudy with a slight (20%) chance of rain and snow showers Friday, mostly cloudy with a (30%) chance of rain and snow Friday night,
- Cloudy and a bit warmer with a good (50%) chance of rain and snow Saturday through Sunday, rain and snow likely (70%) Sunday night,
- Then cloudy with a (30%) chance of rain and snow Monday,
- highs 46-43 warming to 50 Monday lows 26-36. (seasonal averages high 54 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy this evening, mostly cloudy late tonight,
- Mostly cloudy with a slight (20%) chance of AM coastal rain and snow with coastal rain and snow likely (70%) and a bit warmer Tuesday afternoon while a slight (20%) chance of AM inland snow and a good (50%) chance of inland rain and snow and a bit warmer Tuesday afternoon (under 0.10 in. of rain possible, afternoon snow level 600 ft.), evening coastal rain likely (70%) with coastal rain late at night while a good (50%) chance of inland evening rain and snow with inland rain and snow likely (70%) late Tuesday night (0.25 in. of rain possible, snow level 1,000 ft. rising to 1,500 ft. late),
- Mostly cloudy with a (30%) chance of AM coastal rain with a slight (20%) chance of coastal showers and a bit warmer Wednesday afternoon while a (30%) chance of inland rain and snow with a slight (20%) chance of inland rain and snow showers Wednesday afternoon (under 0.10 in. of rain possible, snow level 800 ft.), a slight (20%) chance of rain and snow showers Wednesday night (under 0.10 in. of rain possible, snow level 600 ft.),
- Mostly cloudy with a (40%) chance of rain and snow Thursday, partly cloudy at night.
- lows 29-34 cooling to 32 Thursday night highs near 46.
- Partly cloudy with a slight (20%) chance of rain and snow showers Friday, mostly cloudy with a (40%) chance of rain and snow Friday night,
- Mostly cloudy and a bit warmer with a good (50%) chance of rain Saturday and at night,
- Mostly cloudy with a (40%) chance of rain and snow Sunday, rain and snow Sunday night,
- Then mostly cloudy with rain and snow likely (60%) Monday.
- highs 48-50 lows near 40. (seasonal averages high 53 low 40)
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Forecast for the Cascades in Lane County:
- Mostly cloudy with a slight (20%) chance of evening snow showers, just partly cloudy and very cold late tonight,
- A mix of clouds and sun and a bit warmer with a (40%) chance of snow Tuesday afternoon (1 in. of snow possible), snow and cold late Tuesday night (3-5 in. of snow possible),
- Mostly cloudy with AM snow likely (70%), a bit warmer with a good (50%) chance of snow showers Wednesday afternoon (1 in. of snow possible), a (30%) of snow showers Wednesday night (1 in. of snow possible),
- Mostly cloudy and a bit warmer with good (50%) chance of snow showers Thursday (1 in. of snow possible), partly cloudy with a slight (20%) chance of snow showers at night.
- free air freezing level at the surface late tonight, snow level at the surface Tuesday AM, snow level at the surface Tuesday night through Thursday and Thursday night.
- lows 15-11 highs near 26.
- A mix of clouds and sun with a slight (20%) chance of snow and a bit warmer Friday, becoming mostly cloudy with a good (50%) chance of snow Friday night,
- Mostly cloudy with snow likely (70%) Saturday and at night,
- A good (50%) chance of snow Sunday, snow likely (70%) Sunday night,
- Then cloudy with a good (50%) chance of snow Monday.
- snow level at the surface Thursday through Sunday, then 2,500 ft. Sunday night and Monday.
- highs 27-32 lows 17-22.
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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.
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