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Here is my new weekly weather question. Why is it dangerous to drive your car on to a flooded street? 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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A Reminder: The Vernal Equinox occurs at 4:21 PM Pacific Daylight Time next Sunday March 20th.

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The jet stream shows another cold trough of low pressure ( “U” shaped area) swinging in toward the Pacific Northwest. A frontal system pushed in today bringing more rain and wind. Additional storms will be aiming for us like this frontal system coming in late next week.

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Advisories:  A WINTER WEATHER ADVISORY IS IN EFFECT THROUGH NOON  WEDNESDAY FOR THE NORTH OREGON CASCADES AND THE CASCADES OF LANE COUNTY. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM WEDNESDAY ABOVE 5,000 FT. FOR THE SOUTH CENTRAL AND SOUTH OREGON CASCADES,  AND THE SISKIYOU MOUNTAINS.  A HIGH SURF ADVISORY IS IN EFFECT FROM 11 AM THROUGH 11 PM WEDNESDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.

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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 with showers tonight (0.50 in. of rain possible), occasional showers Wednesday (0.25 in. of rain possible, more during thunderstorms) with a (30%) chance of thunderstorms in the afternoon and evening, showers likely (60%) Wednesday night ).10 in. of rain possible), then showers likely (60%) Thursday and Thursday evening, rain likely (60%) late Thursday night, mostly cloudy with rain likely (60%) Friday, a good (50%) chance of showers Friday night lows 40-36 highs 50-52. Mostly cloudy with a good (50%) chance of showers Saturday and Saturday night, then a good (50%) chance of rain Sunday through Monday highs near 55 lows near 40. (seasonal  averages high 56 low 37)

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Forecast for the Umpqua Basin including, Roseburg:  Mostly cloudy with  a slight (20%) chance of isolated thunderstorms through late this evening, showers late tonight (snow level 2,500 ft.), showers Wednesday (snow level 2,500 ft.) and isolated  afternoon and evening thunderstorms, rain and snow showers likely (60%) late Wednesday night (snow level 2,500 ft. falling to 2,000 ft. late), rain and snow showers showers likely (60%) Thursday (snow level 1,500 ft. rising to 2,500 ft. in the afternoon), rain and snow showers likely (60%) Thursday afternoon (snow level 2,000 ft. rising to 2,500 ft.), then rain likely (60%) Thursday night (snow level 2,000 ft.), rain Friday, then rain and snow showers likely (60%) Friday night lows 43-38 warming to 42 Thursday night, cooling to 37 Friday night highs 47-54. Mostly cloudy with showers likely (60%) Saturday, a good (50%) chance of showers Saturday night through Sunday night, showers likely (60%) Monday, then rain likely (60%) Monday night, and a good (50%) chance of rain Tuesday highs 52-54 lows near 38. (seasonal averages high 60 low 38)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with coastal showers and a (30%) chance of thunderstorms tonight, showers and isolated thunderstorms inland (gusty winds in thunderstorms) then showers late tonight, showers  and isolated thunderstorms Wednesday, showers likely (60%) Wednesday night (snow level 2,000 ft.),  showers Thursday (snow level 2,000 ft. in the AM), rain Thursday night and breezy (wind: S 15-25 mph), rain Friday, then showers likely (60%) Friday night lows 45-40 highs 46-54. Mostly cloudy with showers likely (60%) Saturday and Saturday night, a good (50%) chance of showers Sunday, showers likely (60%) Sunday night and Monday, then rain likely (60%) Monday night and Tuesday highs near 52 lows near 42. (seasonal averages high 55 low 41).

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Forecast for the Cascades of Lane County:  Mostly cloudy snow showers tonight (6-12 in. of snow possible), snow showers Wednesday (3-7 in. of snow possible), snow showers likely (60%) Wednesday night (2 in. of snow possible), snow showers likely (60%) Thursday (2 in. of snow possible) and Thursday evening, snow likely (60%) late Thursday night (1-3 in. of snow possible), snow and rain likely (60%) Friday, snow showers likely (60%) Friday night snow level 2,500 ft. tonight, at the surface Wednesday and Wednesday night, 2,500 ft. Thursday afternoon,  3,000 ft. Thursday night, 3,000 ft. Friday, and at the surface Friday night lows 28-24 highs 35-39. Mostly cloudy with snow showers likely (60%) Saturday, a good (50%) chance of snow showers Saturday night through Sunday night, a good (50%) chance of rain and snow showers Monday, then mostly cloudy with rain likely (60%) Monday night and Tuesday snow level at the surface Saturday, 2,500 ft. Saturday night and Sunday,  3,000 ft. Sunday night and Monday, then 2,500 ft. Monday night, and 3,000 ft. Tuesday highs near 40 lows near 28.

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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.