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It’s Monday. Time for a new weekly weather question. Here it is. 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 moved through Oregon Saturday and a stronger one rumbled in Sunday bringing strong winds and a lot of rain. There is another frontal system that will push in tonight and Tuesday (It is offshore off the edge of this map. It looks like more storms will be aiming for us like this frontal system coming in late next week.

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Advisories:   A HIGH SURF ADVISORY IS IN EFFECT THROUGH 8 PM TONIGHT FOR THE NORTH AND CENTRAL OREGON COAST. A HIGH SURF ADVISORY IS IN EFFECT UNTIL 8 PM TONIGHT FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A HIGH WIND WATCH IS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING NEAR THE BEACHES AND HEADLANDS FOR THE NORTH AND CENTRAL 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 likely (60%) through early afternoon, a good (50%) chance of showers later this afternoon (0.10 in. of rain possible), increasing rain tonight (0.25 in. of rain possible), mostly cloudy with AM showers Tuesday, afternoon showers with a (30%) chance of thunderstorms into the evening (0.50 in. of rain possible, heavier amounts in thunderstorms), and breezy (wind: S 15-30 mph), showers late Tuesday night (0.50 in. of rain possible, heavier amounts in thunderstorms), AM showers Wednesday, then showers and a (30%) chance of thunderstorms in the afternoon and evening, showers likely (60%) Wednesday night highs 57-53 lows 45-39. Mostly cloudy with showers likely (60%) Thursday and Thursday night, showers likely (60%) Friday, a good (50%) chance of showers Friday night through Saturday night, then a good (50%) chance of rain Sunday highs near 54 lows near 40. (seasonal  averages high 56 low 37)

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Forecast for the Umpqua Basin including, Roseburg:  Mostly cloudy with patchy AM fog, a slight (20%) chance of showers today (snow level 3,000 ft. this AM), rain likely (60%) this evening, rain late tonight (snow level 3,500 ft. in the evening), and breezy (wind: S 10-15 mph increasing to S 20-25 mph late at night), AM rain Tuesday, rain and a slight (20%) chance of thunderstorms Tuesday afternoon and evening, and breezy (wind: SW 15-25 mph), rain late Tuesday night (snow level 3,500 ft. falling to 2,500 ft. late at night), AM showers Wednesday, showers with a slight (20%) chance of afternoon thunderstorms, showers likely (60%) and a slight (20%) chance of thunderstorms in the evening, showers likely (60%) late Wednesday night highs 59-52 lows 45-38. Mostly cloudy with rain and snow showers likely (60%) Thursday through Friday, a good (50%) chance of rain and snow showers Friday night, a (40%) chance of showers Saturday and Saturday night, then a (40%) chance of rain Sunday highs 52-54 lows near 38. (seasonal averages high 59 low 38)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy fog this AM and a (40%) chance of showers today, rain tonight and windy (wind: S 15-20 mph increasing to S 25-35 late at the shore and S 15-25 mph inland), AM rain Tuesday, rain with a slight (20%) chance of afternoon thunderstorms and windy (wind: S 25-35 mph  gusts to 50 mph shifting SW 20-25 mph gusts to 40 mph late morning and afternoon), rain and a slight (20%) chance of thunderstorms in the evening, rain late Tuesday night and breezy (wind: SW 15-25 mph), showers Wednesday AM, then showers and a slight (20%) chance of thunderstorms in the afternoon and evening, showers likely (60%) late Wednesday night highs 55-49 lows 45-40. Mostly cloudy with showers likely (60%) Thursday through Friday, then mostly cloudy with a (50%) chance of showers Friday night through Saturday night, then a good (50%) chance of rain Sunday 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 with snow showers today decreasing late this afternoon (2 in. of snow possible), rain and snow likely (60%) this evening, rain late tonight (1-4 in. of snow possible) and breezy (wind: SW 15-25 mph), rain and snow Tuesday AM, rain and snow showers in the afternoon (5-10 in. of snow possible) and breezy (wind: SW 15-25 mph), snow showers Tuesday night (5-10 in. of snow possible), snow showers Wednesday (3-6 in. of snow possible), then rain and snow showers likely (60%) Wednesday night snow level 3,000 ft. rising to 4,000 this afternoon, 4,500 ft. rising to 5,500 ft. tonight, 4,000 ft. falling to 3,500 ft. Tuesday afternoon, 2,500 ft. Tuesday night and Wednesday, and up to 3,500 ft. Wednesday night highs 40-34 lows 30-27. Mostly cloudy with rain and snow showers likely (60%) Thursday through Friday, showers likely (60%) with a good (50%) chance of snow showers Friday night, partly cloudy with a good (50%) chance of rain and snow showers Saturday, mostly cloudy with a good (50%) chance of snow showers Saturday night, then a good (50%) chance of snow Sunday snow level 3,500 ft. Thursday, 3,000 ft. Thursday night and Friday, 3,500 ft. Friday night, 4,000 ft. Saturday, 3,000 ft. Saturday night, and 2,500 ft. Sunday 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.