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Here is my new weekly weather quiz question. I’ll give you a definition and you tell me what I am defining. It is a warmer than normal period after the first frost in the Fall. What have I defined? Please place your answer as comment after the forecasts. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs, Good luck.
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A high pressure ridge (shaded “Arch” shape in the jet stream over the Northwest) has brought sunshine to the Pacific Northwest and is still keeping us warmer than normal.. A weak frontal system offshore fell apart on the way to our area. A frontal system will push through by early Sunday as an upper level low pressure trough migrates Eastward across Oregon. That will cool us down to more normal temperatures.
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Advisories: NONE AT THIS TIME.
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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: AM clouds and fog, a mix of clouds and sun this afternoon, and mostly clear to night high 85 lows 50. Mostly sunny Thursday, partly cloudy Thursday night with patchy fog late at night, a mix of clouds and sun Friday and Saturday, partly cloudy Friday night and Saturday night highs 82-75 lows near 50. A mix of clouds and sun Sunday AM, mostly cloudy with a slight (20%) chance of rain Sunday afternoon and evening, a (30%) chance of rain late at night and Monday AM, a (30%) chance of showers Monday afternoon and evening, a slight (20%) chance of showers late at night and Monday AM, then a mix of clouds and sun Monday afternoon highs 74-70 lows near 50 . (seasonal averages highs 72 low 44)
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Forecast for the Umpqua Basin including, Roseburg: Mostly cloudy this AM, sunny this afternoon through Friday with mostly clear skies Thursday night, and partly cloudy Friday night highs 85-88-80 lows near 55. Partly cloudy Saturday and Saturday and Saturday night, mostly cloudy with a slight (20%) chance of rain Sunday and Sunday night, mostly cloudy Monday AM with a slight (20%) chance of rain, then partly cloudy with a slight (20%) chance of showers Monday afternoon and night, and partly cloudy Tuesday highs 80-70 lows near 50. (seasonal averages high 77 low 47)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy coastal fog this AM, sunny this afternoon, mostly clear tonight, sunny Thursday with patchy AM coastal fog, and mostly cleat Thursday night highs 68-70 lows 53-55. Sunny Friday, mostly clear Friday night, partly cloudy Saturday and Saturday evening, mostly cloudy Saturday night, mostly cloudy with a slight (20%) chance of rain Sunday afternoon and night, AM clouds then partly cloudy with a slight (20%) chance of showers Monday and Monday night, then partly cloudy Tuesday highs 63-65 lows 50-53. (seasonal averages high 66 lows 48).
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Forecast for the Cascades of Lane County: Mostly sunny today through Friday, mostly clear each night free air freezing level 14,000 ft. today and tonight, 15,000 ft. Thursday and Thursday night, back to 14,000 ft. Friday and Friday night highs 74-69 lows near 45. A mix of clouds and sun Saturday, partly cloudy Saturday night, a mix of clouds and sun Sunday AM, mostly cloudy with a slight (20%) chance of rain Sunday afternoon and evening, a (30%) chance of rain late at night and Monday AM, then a (30%) chance of showers in the afternoon and evening, a slight (20%) chance of showers late Monday night and Tuesday free air freezing level 14,000 ft. Saturday, 13,000 ft. Saturday night, snow level above 8,000 ft. Sunday through Tuesday highs 66-60 low near 44.
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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.