Check out my latest Eugene Daily News Weather Or Not column You Won’t Find This W.A.T.C.H. List At The Airport
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Here is my weekly weather quiz question for the last time. What is “Condensation?” Here is the correct answer. Condensation is in general, the physical process by which a vapor becomes a liquid or solid; the opposite of evaporation, although on the molecular scale, both processes are always occurring. I’ll have a new weekly weather question for you starting Monday. 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 blue arrows) has taken control as Upper Level High Pressure (Shaded “U” shape with blue arrows) offshore moves eastward and weakens. The graphics for days days 1-3 show the complex frontal system moving into Oregon followed closely by another frontal segment on Christmas Day. The graphics for days 3-7 show new complex frontal systems approaching the Pacific Northwest through next Saturday.
NOTE: Hoodoo Ski Area opened Friday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 33 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 40 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 27 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: YELLOW – Caution Is Advised.
*Note: Pellet stoves may be used anytime if they produce no visible emissions.
Data courtesy of Lane Regional Air Protection Agency
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Advisories:
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 8 AM UNTIL 4 PM TODAY FOR THE COAST RANGE OF NORTHWEST OREGON, THE LOWER COLUMBIA, THE CENTRAL WILLAMETTE VALLEY, AND THE SOUTH WILLAMETTE VALLEY.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 8 AM UNTIL 10 PM TODAY FOR THE GREATER PORTLAND METRO AREA.
- A WINTER STORM WARNING IS IN EFFECT FROM 10 AM TODAY UNTIL 10 AM MONDAY FOR THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE, AND THE UPPER HOOD RIVER VALLEY
- A BEACH HAZARDS STATEMENT IS IN EFFECT FROM THIS MORNING THROUGH THIS AFTERNOON FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 1 AM UNTIL 10 AM TODAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY,
- 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:
- Cloudy with rain and a (30%) chance of freezing rain this AM, rain and a bit warmer this afternoon and evening (0.25 in. of rain possible), a (40% ) chance of rain late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a good (50%) chance of AM rain, a slight (20%) chance of rain and a bit warmer Monday afternoon (Christmas Day), partly cloudy and colder late at night,
- A mix of clouds and sun and a bit cooler Tuesday, then mostly cloudy with a (40%) chance of rain Tuesday night.
- highs 45-40 lows 33-37 cooling to 28 Monday night warming to 33 Tuesday night.
- Mostly cloudy and a bit warmer with a (40%) chance of rain Wednesday through Thursday, a good (50%) chance of rain Thursday night,
- A mix of clouds and sun with a good (50%) chance of rain and a bit warmer Friday, mostly cloudy with a good (50%) chance of rain at night,
- Then mostly cloudy with a (40%) chance of rain Saturday.
- highs 46-49 lows 35-39 cooling to 36 Friday night. (seasonal averages high 45 low 33)
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Forecast for Roseburg:
- Cloudy with a slight (20%) chance of AM rain, rain likely (70%) and a bit cooler this afternoon and evening (0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a slight (20%) chance of showers and a bit warmer Monday (Christmas Day), just partly cloudy at night,
- Mostly cloudy with patchy AM fog and freezing fog, partly cloudy and a bit cooler Tuesday afternoon, then mostly cloudy with a (30%) chance of rain Tuesday night,
- highs 45-42 lows 38-32 warming back to 38 Tuesday night.
- Mostly cloudy and a bit warmer with a slight (20%) chance of rain Wednesday through Thursday night,
- Mostly cloudy with a (40%) chance of rain Friday and at night,
- Then mostly cloudy with a (30%) chance of showers Saturday.
- highs near 46 lows 36-40 cooling to 38 Friday night. (seasonal averages high 47 low 36)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Cloudy with a slight (20%) chance of AM rain, rain and a bit cooler this afternoon (0.10 in. of rain possible), mostly cloudy with rain this evening, a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
- Mostly cloudy and a bit cooler with a slight (20%) chance inland AM showers, partly cloudy Monday afternoon (Christmas Day), just partly cloudy at night,
- Mostly cloudy with patchy AM fog, partly cloudy Tuesday afternoon, then becoming mostly cloudy with a (30%) chance of rain Tuesday night,
- highs 52-50 lows 42-34 warming to 42 Tuesday night.
- Mostly cloudy and bit warmer with a slight (20%) chance of rain Wednesday and at night,
- Mostly cloudy and bit warmer with a (30%) chance of rain Thursday and Thursday night,
- A good (50%) chance of rain and a bit warmer Friday, a (40%) chance of rain Friday night,
- Then mostly cloudy with a slight (20%) chance of showers and a bit cooler Saturday.
- highs near 52 lows 40-45 cooling back to 40 Friday night. (seasonal averages high 51 low 40)
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Forecast for the Cascades in Lane County:
- Cloudy with a good (50%) chance of AM rain and snow, rain and snow and a bit warmer this afternoon and evening (0.25 in. of rain possible, 2 in. of snow possible), a good (50%) chance of rain and snow late tonight (0.25 in. of rain possible, 1 in. of snow possible),
- A good (50%) chance of AM rain and snow, a mix of clouds and sun and a bit cooler with a slight (20%) chance of rain and snow Monday afternoon (Christmas Day), just partly cloudy at night,
- Then partly cloudy Tuesday and Tuesday night.
- snow level 3,500 ft. today, 4,000 ft. tonight, 2,500 ft. Monday, free air freezing level at the surface rising to 7,500 ft. Tuesday, then snow level 3,500 ft. Tuesday night.
- highs 32-35 cooling back to 32 Monday lows 26-22 warming back to 26 Tuesday night.
- Mostly cloudy and a bit cooler with a good (50%) chance of rain and snow Wednesday and at night,
- Mostly cloudy with a (40%) chance of rain and snow and a bit warmer Thursday and Thursday night,
- A good (50%) chance of rain and snow and a bit warmer Friday, a (40%) chance of rain and snow at night,
- A mix of clouds and sun with (40%) chance of rain and snow Saturday.
- snow level 3,500 ft. Wednesday, 5,000 ft. Wednesday night, 4,000 ft. Thursday, 4,500 ft. Thursday night, 5,500 ft. Friday and Friday night, then 4,000 ft. Saturday.
- highs near 38 lows 25-30 cooling back to 25 Friday night.
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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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Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.
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