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This is your last chance 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 has dropped in behind another cold front sliding down from the North. A weak high pressure will clear us out through part of the weekend. Be careful driving on roads with patches of leftover snow or ice because they will be slippery. Low pressure will move back in and bring precipitation with it for next week, beginning before the weekend is over.

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Advisories:   A HARD FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 8 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: Clear and very cold (record low likely) tonight, mostly sunny in the morning,  just partly cloudy Saturday afternoon, mostly cloudy with a (30%) chance of rain and snow Saturday evening, a (30%) chance of snow late Saturday night (not as cold), snow and rain likely (60%) early Sunday changing to rain by late morning continuing in the afternoon (1 in. of snow possible), rain likely (60%) Sunday night (0.25 in. of rain possible),  rain Monday, then rain likely (60%) Monday night lows 13-37 highs 38-48. Mostly cloudy with rain likely (60%) Tuesday through Thursday night, then mostly cloudy with a (40%) chance of rain Friday highs near 50 lows 38-34. (seasonal  averages high 53 low 36)

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Forecast for the Umpqua Basin including, Roseburg: Partly cloudy this evening, clearing and colder tonight, just partly cloudy Saturday and Saturday evening, cloudy with a (40%) chance of snow late Saturday night, cloudy with a good (50%) chance of rain and snow Sunday, rain and snow likely (60%) Sunday night (snow level 2,000 ft.), rain and snow likely (60%) and breezy Monday through Tuesday, and rain Tuesday night lows 19-38 highs 39-49. Mostly cloudy with rain Wednesday through Thursday, a good (50%) chance of showers Thursday night, then mostly cloudy with a a good (50%) chance of rain and snow Friday highs 46-50 lows near 35. (seasonal averages high 57 low 37)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly clear and cold tonight, partly cloudy Saturday and Saturday evening then cloudy, a (30%) chance of coastal rain late Saturday night, a good (50%) chance of rain and snow late inland (snow level 500 ft.), rain likely (60%) Sunday (snow level 1,500 ft.), and rain likely (60%) Sunday night through Monday night (windy Monday and Monday night), then rain Tuesday and Tuesday night lows 22-40 highs 42-50. Mostly cloudy with rain Wednesday and Wednesday night, rain likely (60%) Thursday,  showers likely (60%) Thursday night, then mostly cloudy with rain likely (60%) Friday highs near 50 lows near 38. (seasonal averages high 55 low 41).

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Forecast for the Cascades of Lane County:  Mostly clear and very cold tonight, mostly sunny Saturday AM, partly cloudy in the afternoon, mostly cloudy with a slight (20%) chance of snow in the evening, a (40%) chance of snow South of Mt. Jefferson, with snow likely North and not as cold late Saturday night, snow Sunday (5-9 in. of snow possible), snow Sunday night (14-20 in. of snow possible) and breezy (wind: SW 15-25 mph gusts to 50 mph), snow Monday, then snow with rain likely (60%) Monday night free air freezing level at the surface tonight and Saturday, snow level at the surface Saturday night through Monday, 2,500 ft. Monday night lows 4-25 highs 26-32. Mostly cloudy with snow and rain Tuesday, snow with rain likely (60%) Tuesday night, rain and snow Wednesday and Wednesday night,  snow and rain likely (60%) Thursday and Thursday night, mostly cloudy with a good (50%) chance of snow Friday snow level 3,000 ft. Tuesday,  3,500 ft. Tuesday night, 4,500 ft. Wednesday, falling to 3,500 ft. Wednesday night and Thursday, then 3,000 ft. Thursday night and Friday  highs 37-34 lows 27-24.

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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.