One frontal system , a warm front, moved into Oregon today. As you can see on that map animation, a cold front behind it will move in on Friday. This storm has the potential of dumping two feet or more of snow in the Cascades.

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Advisories:  A WINTER STORM WARNING  IS IN EFFECT  UNTIL  9 PM TONIGHT  FOR THE NORTH CASCADES AND THE CASCADES OF LANE COUNTY AND THE WESTERN COLUMBIA GORGE AND THE UPPER HOOD RIVER  VALLEY.  ANOTHER WINTER STORM WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR THE WESTERN COLUMBIA RIVER GORGE AND THE UPPER HOOD RIVER VALLEY. A HIGH WIND WARNING IS IN EFFECT UNTIL 7 PM FOR CENTRAL AND EASTERN LAKE COUNTY. A HIGH WIND WARNING IS IN EFFECT UNTIL 4 AM FRIDAY (NEW YEAR’S DAY) FOR THE SOUTH OREGON COAST. A HIGH SURF ADVISORY IS IN EFFECT FROM NOON FRIDAY THROUGH NOON SATURDAY FOR THE SOUTH OREGON COAST AND FROM 6 AM FRIDAY THROUGH 6 AM SATURDAY FOR THE NORTH AND CENTRAL OREGON COAST.

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Forecast for the Central and Southern Willamette Valley:  Mostly cloudy  with rain tonight  low in the low 40s. Showers and breezy New Year’s day and showers likely at night (60% ) high near 50 low near 40. Cloudy Saturday with showers likely (60%) mostly cloudy with a (40%) chance of showers Saturday night high near 45 low near 35. Mostly cloudy Sunday and Sunday night  with a good (50%) chance of rain high 40-43 in the low 40s lows in the upper 30s. A  (50%) chance of showers Monday and Monday night high 47 low 39. A  good (50%) chance of  rain Tuesday through Wednesday night and likely (60%) Thursday  highs again near 50 lows in the upper 40s.

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Forecast for the Umpqua Basin including Roseburg:  Mostly cloudy rain and breezy tonight  low in the low 40s. Showers New Year’s Day high 47-49. Showers likely (60%) in the evening then rain and snow showers late (snow level 3,500′) Friday night  low near 40. Cloudy with a slight (20%) chance of showers Saturday high near 50. Cloudy with a slight (20%) chance of showers Saturday night (snow level 3,500′) low 35-37. There will be a (30%) chance of rain Sunday and a good (50%) chance of rain Sunday night low 40. Mostly cloudy Monday through Tuesday night with a good (50%) chance of showers highs in the mid 40s (except near 50 Monday) lows 39.  A good (50%) chance of rain Wednesday & Wednesday night high 45 low 39. Rain likely (60%) Thursday high near 40.

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Forecast for the South Oregon Coast: Mostly cloudy rain & windy tonight low 46-49. Showers and breezy Friday (New Year’s Day) then showers likely (60%) at night  high 53 low 45. Cloudy a (40%) chance of showers Saturday high 52-54. A slight (20%) chance of showers Saturday night low 40. There will be a (40%) chance of showers Sunday and a good (50%) chance Sunday night high in the low 50s low near 42. A good (50%) chance of showers Monday and Monday night high 54 low 44. A (50%) chance of rain Tuesday and rain likely (60%) Tuesday night high 55 low 44. Mostly cloudy rain likely (60%) Wednesday and Wednesday night high in the low 50s low near 40. Rain Thursday high 55.

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Forecast for the Cascades of Lane County:  Tonight rain and windy snow level  6,000′. AM showers then afternoon rain and snow showers and breezy Friday (New Year’s Day) snow level 5,500′ down to 5,000′ 3-6″ of snow.  Friday night rain and snow showers snow level falling from 4,000′ to 3,500′ 4-8″ of snow. A good (50%) chance of rain and snow showers Saturday and Saturday night snow level 4,000′. A good (50%) chance of rain and snow Sunday and Sunday night snow level 5,000′.  Mostly cloudy with a (50%) chance of showers Monday snow level 6.000′. Rain and snow showers Monday night snow level 5,000′. A good (50%) chance of rain and snow Tuesday and Tuesday night snow level 5,500′ down to 5,000′ at night . Mostly cloudy with rain and snow likely Wednesday snow level 5,500′. Wednesday night a good (50%) chance of rain and snow, snow level 5,000′ and a good (50%) chance of rain Thursday snow level rising to 5,500′.

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Here is your last chance to answer this week’s weekly weather quiz. How much does the entire atmosphere of Earth weigh? Please give your answer in pounds and place the answer as a comment on this page. The first person to answer correctly will win one week of free personalized forecasts tailored to your needs. Good luck.