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With colder temperatures watch out for icy patches or snow still on the roadways and  slow down.

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Today is your last day to win this week. Here again is my weekly weather quiz question. What is a fire tornado? Please post your answer as a comment by clicking on “no comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized  weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

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The jet stream shows a cold trough of low pressure ( “U” shaped area) pushed down and brought winter weather  with it. A burst of cold Arctic air is dropped in behind another cold front sliding down from the North. A weak high pressure will clear us out for part of the weekend. Be careful driving on snow covered or icy roads.Low pressure will move back in and bring precipitation with it for next week.

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Advisories:  A FREEZE WARNING IS IN EFFECT  THROUGH 10 AM TODAY FOR THE SOUTH CENTRAL  AND THE SOUTH OREGON COAST. A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 10 AM SATURDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.

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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: Partly cloudy this afternoon, mostly clear and very cold (record low likely) tonight, just partly cloudy Saturday, mostly cloudy with a (30%) chance of rain and snow Saturday evening, a (30%) chance of rain late Saturday night (snow level rising to 1,000 ft.), rain likely (60%) Sunday ((snow level 1,000 ft. AM rising to 2,000 ft. in the afternoon, 1 in. of snow possible at those levels), rain Sunday night highs 36-46 lows 12-34 . Mostly cloudy with rain Monday, then rain likely (60%) Monday night through Thursday highs 47-53 lows 35-39. (seasonal  averages high 53 low 36)

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Forecast for the Umpqua Basin including, Roseburg: Mostly cloudy with a slight (20%) chance of snow isolated showers today, mostly cloudy this evening, clearing tonight, just partly cloudy Saturday, mostly cloudy with a slight (20%) chance of rain and snow Saturday night, cloudy with a good (50%) chance of rain and snow Sunday, then rain and snow likely (60%) Sunday night highs 40-47 lows 20-38. Cloudy with a (40%) chance of rain and snow likely (60%) Monday and Monday night, rain likely (60%)  Tuesday through Wednesday night, then showers likely (60%) Thursday highs 50-54 lows 35-38. (seasonal averages high 57 low 37)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a slight (20%) chance of isolated rain and snow showers today, mostly cloudy in the evening,  partly cloudy tonight and Saturday, mostly cloudy with a (30%) chance of coastal rain and a slight (20%) chance of rain and snow inland Saturday night (snow level 500 ft.), mostly cloudy with rain likely (60%) Sunday and Sunday night (breezy) highs 42-50 lows 23-40. Mostly cloudy with showers likely (60%) and breezy Monday through Wednesday night, and showers likely (60%) Thursday highs  47-54 lows near 40. (seasonal averages high 55 low 41).

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Forecast for the Cascades of Lane County:  Partly cloudy with a slight (20%) chance of isolated snow showers and very cold today,  partly cloudy and very cold tonight, mostly sunny Saturday AM, partly cloudy in the afternoon, partly cloudy in the evening, mostly cloudy with a (40%) chance of snow and not as cold Saturday night, then snow likely (60%) Sunday  (4-8 in. of snow possible), and snow Sunday night snow level at the surface today, free air freezing level at the surface tonight and Saturday, snow level at the surface Saturday night through Sunday night highs 17-32 lows 4-23.  Mostly cloudy with snow Monday,  snow with rain likely (60%) Monday night, snow and rain Tuesday and Tuesday night, rain Wednesday, then rain and snow Wednesday night, then snow and rain likely (60%) Thursday snow level at the surface Monday, 2,500 ft. Monday night, rising to 3,000 ft. Tuesday,  4,000 ft. Tuesday night, 5,500 ft. Wednesday, falling to 4,500 ft. Wednesday night, and 3,500 ft. Thursday highs 32-40 lows 23-29.

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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.