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Today is your last chance to win this year. Here is my new weekly weather quiz question. What is the difference between Doppler Radar and the older generation radar? Please post your answer as a comment after the forecasts on this page. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs.
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The upper air flow (yellow jet stream and dark colors for winds) shows a trough of low pressure a (“U” shape) sliding Eastward through Oregon and a low (yellow circle) developing and moving through California as a frontal system moved slowly away from the Pacific Northwest with colder air behind it. Notice that the jet stream airflow has set up a high pressure ridge (“Arch” shape on yellow line) that it brings mostly clear skies and the colder air in from the north and northwest through New Years Day Holiday weekend.
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Advisories: A FREEZE WARNING IS IN EFFECT UNTIL 9 AM TODAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.
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Here are your detailed forecasts. **
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly clear with areas of fog and freezing fog this AM, mostly sunny this afternoon, mostly clear tonight (New Years Eve), mostly sunny Saturday (New Years Day), mostly clear Saturday night with patchy fog and freezing fog again late night and early Sunday AM, mostly sunny Sunday, partly cloudy Sunday night with a slight (20%) chance of rain highs near 40 lows 23-27. A mix of clouds and sun Monday and Tuesday, partly cloudy Monday night and Tuesday night, mostly cloudy with a good (50%) chance of rain Wednesday through Thursday highs 40-48 lows 29-39. (seasonal averages highs 45 low 32)
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Forecast for the Umpqua Basin including, Roseburg: Mostly cloudy with patchy fog and freezing fog this AM, partly cloudy this afternoon and evening, mostly cloudy with a good (50%) chance of rain and snow (snow level 1,000 ft.) late tonight (New Years Eve), AM clouds, mostly cloudy Saturday (New Years Day) with a slight (20%) chance of rain and snow, and mostly cloudy Saturday night, mostly cloudy Sunday, and mostly cloudy with a slight (20%) chance of rain Sunday night highs 38-46 lows 26-34. Mostly cloudy with a slight (20%) chance of showers Monday and Monday night, just mostly cloudy Tuesday and Tuesday night, then mostly cloudy with a good (50%) chance of rain Wednesday through Thursday highs 40-46 lows near 32-38. (seasonal averages high 49 low 34)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy fog and freezing fog this AM, partly cloudy in the afternoon, a slight (20%) chance of a chance of rain this evening, rain likely (60%) tonight (New Years Eve) (snow level 1,500 ft.), a slight (20%) chance of rain Saturday (New Years Day), patchy coastal fog late at night, mostly cloudy Sunday, and mostly cloudy with a slight (20%) chance of rain Sunday night highs 45-50 lows 32-39. Mostly cloudy with a slight (20%) chance of showers Monday and Monday night, just mostly cloudy Tuesday and Tuesday night, and mostly cloudy with a good (50%) chance of rain Wednesday through Thursday highs 47-50 lows near 37-44. (seasonal averages high 52 lows 39).
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Forecast for the Cascades of Lane County: Mostly sunny today and breezy (wind:E 10-15 mph increasing to E 15-25 mph in the afternoon wind chill temps to -15 in higher exposed areas), mostly clear tonight (New Years Eve), mostly sunny Saturday (New Years Day), partly cloudy Saturday night, a mix of clouds and sun Sunday, partly cloudy with a slight (20%) chance of snow Sunday night free air freezing level at the surface today, 2,500 ft. tonight, 2,000 ft. tonight and Saturday, at the surface Saturday night, 2,500 ft. Sunday, 3,500 ft. Sunday night highs 24-32 lows 14-23. A mix of clouds and sun Monday and Tuesday, partly cloudy Monday night and Tuesday night, mostly cloudy with a good (50%) chance of rain and snow Wednesday, then rain and snow likely (60%) Wednesday night and Thursday free air freezing level 3,500 ft. Monday and Monday night, 4,500 ft. Tuesday, 4,000 ft. Tuesday night, a snow level 4,000 ft. Wednesday through Thursday highs 33-37 lows 22-30.
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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.