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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 (“Arch” shape in the jet stream) has brought sunshine to the Pacific Northwest and  is still keeping us warmer than normal..  A weak  frontal system offshore will move inland Wednesday, but should stay mainly to the North. That means it will not do much to change our weather either. Other disturbances will pass mostly to the North continuing the milder weather.

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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:  Mostly cloudy this AM with patchy fog, mostly sunny in the afternoon,  partly cloudy at night, a mix of clouds and sun Wednesday, and mostly clear Wednesday night  highs 84-85 lows 53-50. Mostly sunny Thursday and Friday, mostly clear Thursday night, partly cloudy Friday night, and a mix of clouds and sun Saturday highs 82-75 lows 47-50. Partly cloudy Saturday night, a mix of clouds and sun Sunday AM, mostly cloudy Sunday afternoon, a slight (20%) chance of rain late Sunday night, AM clouds Monday then a mix of clouds and sun with a slight (20%) chance of rain Monday afternoon lows near 50 highs 74-70 . (seasonal averages highs 73 low 44)

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Forecast for the Umpqua Basin including, Roseburg:  Partly cloudy this AM, sunny in the afternoon, mostly clear at night, partly cloudy Wednesday AM, then sunny Wednesday afternoon and mostly clear at night highs 86-88 lows 60-56. Sunny Thursday, mostly clear at night and mostly sunny Friday, partly cloudy Friday night through Saturday night, mostly cloudy with a slight (20%) chance of rain Sunday through Monday highs 84-72 lows 55-50. (seasonal averages high 77 low 47)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:  Partly cloudy  today, and tonight,  AM clouds then sunny Wednesday , mostly clear Wednesday night highs 68-64 lows 55-50 . Sunny Thursday, mostly clear at night, partly cloudy Friday through Saturday evening, mostly cloudy Saturday night, and a slight (20%) chance of rain Sunday through Monday highs 67-64 lows 50-54. (seasonal averages high 66 lows 48).

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Forecast for the Cascades of Lane County: Mostly sunny today through Friday,  mostly clear  nights, except partly cloudy Friday night free air freezing level 14,000 ft. today through Wednesday night, 15,000 ft. Thursday and Thursday night, back to 14,000 ft.  Friday and Friday night  highs 70-73 lows ranging from 42-45. 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 night, then AM clouds Monday then a mix of clouds and sun with a slight (20%) chance of rain free air freezing level 14,000 ft. Saturday and Saturday night, snow level above 8,000 ft. Sunday through Monday 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.