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Advisories: NONE AT THIS TIME.
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A trough of low pressure (“U” shape on the yellow line) is rolling through the West bringing more rain with it. A cold front will move down from the North dropping snow levels and temperatures. A weak high pressure ridge (“Arch” shape on the yellow line) will return some sunshine for your Monday. A low pressure trough will replace the ridge late Tuesday afternoon and along with another frontal system (position shown is Wednesday) will continue the threat of rain and snow.
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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 a slight (20%) chance of isolated rain or snow showers this evening (under 0.10 in. of rain possible), just mostly cloudy and colder late tonight, patchy AM fog and possible freezing fog Monday, mostly sunny in the afternoon, partly cloudy Monday night, a mix of clouds and sun Tuesday AM, increasing clouds to mostly cloudy with rain becoming likely (60%) Tuesday afternoon (0.15 in. of rain possible), rain in the evening, rain and snow showers (snow level 1,000 ft. late at night, 0.30 in. of rain possible) late Tuesday night and windy (S 20-30 mph decreasing to S 10-15 mph late), then mostly cloudy with rain and snow showers Wednesday and Wednesday night (snow level 1,000 ft.) lows 24-36 highs 44-40 rising to 45 Wednesday. Mostly cloudy with rain and snow showers likely (60%) Thursday, a good (50%) chance of rain Thursday night, a (40%) chance of rain Friday, a good (50%) chance of rain Friday night, a good (50%) chance of showers Saturday, then cloudy with a good (50%) chance of rain Saturday night and Sunday highs 45-53 lows 35-40. (seasonal averages high 53 low 35)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a slight (20%) chance of rain and snow showers (snow level 1,500 ft. falling to 1,000 ft. late) tonight, mostly cloudy with a slight (20%) chance of snow showers Monday AM, partly cloudy in the afternoon and Monday night, mostly cloudy with a slight (20%) chance of rain and snow Tuesday AM, rain and snow (snow level 1,500 ft. in the afternoon, under 0.10 in. of rain possible) in the afternoon, rain and snow (snow level 2,000 ft. falling to 1,500 ft. late, 0.50 in. of rain possible) Tuesday night, then rain and snow showers Wednesday and Wednesday night lows 32-36 highs 46-42. Mostly cloudy with rain and snow showers Thursday, rain and snow showers likely (60%) Thursday night, a good (50%) chance of showers Friday and Friday night, mostly cloudy Saturday, a slight (20%) chance of showers Saturday night, then mostly cloudy with (30%) chance of showers Sunday highs 48-55 lows 36-39. (seasonal averages high 55 low 38)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a (30%) chance of coastal showers and a (30%) chance of inland rain and snow showers tonight (snow level 1,500 ft. falling to 1,000 ft. late, under 0.10 in. of rain possible), partly cloudy Monday with a slight (20%) chance of AM inland snow showers, partly cloudy Monday afternoon and Monday night, a (30%) chance of AM coastal rain with a slight (20%) chance of AM rain and snow (0.30 in. of rain possible) Tuesday, mostly cloudy, coastal rain and inland rain and snow Tuesday afternoon and evening and very windy along the shore (wind: S 15-20 mph increasing to S 35-50 mph late morning and afternoon), mostly cloudy with coastal rain Tuesday night with evening rain with rain and snow inland (0.50 in. of rain possible) Tuesday night (snow level 2,000 ft. falling to 1,500 ft. late) and very windy (wind: S 30-45 mph then SW 20-25 mph late), mostly cloudy with rain and snow showers Wednesday and breezy, rain and snow showers in the evening, then rain and snow showers likely (60%) late Wednesday night lows 33-40 highs 48-45. Mostly cloudy with rain and snow showers Thursday, showers likely (60%) Thursday night, a (40%) chance of showers Friday and Friday night, just mostly cloudy Saturday, a slight (20%) chance of showers Saturday night, then mostly cloudy with a (40%) chance of showers Sunday highs 48-52 lows near 40. (seasonal averages high 53 low 41).
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Forecast for the Cascades of Lane County: Mostly cloudy with a (40%) chance of scattered snow showers tonight, partly cloudy with a slight (20%) chance of snow showers Monday AM, just partly cloudy Monday night and Tuesday AM, becoming mostly cloudy with a (40%) chance of snow Tuesday afternoon, rain and snow in the evening, snow showers and windy (wind: SW 20-30 mph gusts to 45 mph in the evening) late Tuesday night, then mostly cloudy with snow showers Wednesday and Wednesday night snow level at the surface tonight, free air freezing level at the surface Monday afternoon and Monday night, snow level 2,500 ft. Tuesday afternoon and evening, then at the surface Tuesday night through Wednesday night lows 18-14 warming to near 20 Wednesday night highs 28-30 cooling to 25 Wednesday. Mostly cloudy with snow showers likely (60%) Thursday, a good (50%) chance of snow showers Thursday night, a (50%) chance of snow Friday, a (40%) chance of rain and snow Friday night, a (40%) chance of rain and snow showers Saturday, then mostly cloudy with a good (50%) chance of rain and snow Saturday night and Sunday snow level at the surface Thursday through Friday, 4,000 ft. Friday night and Saturday, then 3,500 ft. Sunday highs 30-40 lows 24-28.
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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.
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Get your local Eugene-Springfield news on-line at Eugene Daily News.com.
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