Apr
09.
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An upper air trough of low pressure (“U” shape) is moving South through Oregon and has brought with it colder air from the Northwest. Today will start out nice, but the clouds will increase and the precipitation will be returning by late afternoon or evening. Another frontal system should be moving in tonight and Sunday (position shown is Monday AM).
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Advisories: NONE AT THIS TIME.
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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 this afternoon with some sun peeks, mostly cloudy with a slight (20%) chance of evening rain, a good (50%) chance of rain late tonight (0.10 in. of rain possible), rain likely (60%) Sunday (0.10 in. of rain possible) and Sunday night (0.25 in. of rain possible), cloudy with a good (50%) chance of showers Monday (0.10 in. of rain possible), then mostly cloudy with a (30%) chance of showers Monday night highs 59-49 lows 40-33. Partly cloudy with a (40%) chance of rain Tuesday, mostly cloudy with a (40%) chance of showers Tuesday night and Wednesday, then mostly cloudy with a good (50%) chance of rain Wednesday night through Friday highs 53-57 lows 32-42. (seasonal averages high 59 low 38)
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Forecast for the Umpqua Basin including, Roseburg: Partly cloudy with areas of frost early this AM, mostly cloudy in the afternoon, a (40%) chance of rain tonight (snow level 3,000 ft. falling to 2,500 ft.), cloudy with a good (50%) chance of rain Sunday, evening rain likely (60%), rain late Sunday night (snow level 3,500 ft. late), cloudy with AM rain and snow showers likely (60%) Monday, then a good (50%) chance of rain and snow showers Monday afternoon (snow level 2,500 ft. falling to 1,500 ft. in the afternoon) and night highs 62-50 lows 42-33. Mostly cloudy with a slight (20%) chance rain Tuesday and Tuesday night, a (40%) chance of rain and snow Wednesday AM, a good (50%) chance of showers in the afternoon, rain in the evening, a (40%) chance of rain and snow late Wednesday night, mostly cloudy with rain likely (60%) Thursday and Thursday night, then mostly cloudy with a (40%) chance of rain Friday highs 54-59 lows 40-46. (seasonal averages high 63 low 40)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy frost early this AM, mostly cloudy this afternoon, becoming cloudy tonight with a good (50%) chance of rain, cloudy with a (40%) chance of rain Sunday, rain Sunday night, cloudy with AM showers likely (60%) Monday AM, showers Monday afternoon, then mostly cloudy with a slight (20%) chance of rain and colder Monday night highs 52-55 cooling to 50 Monday lows 45-37. Mostly cloudy with a slight (20%) chance of rain in the afternoon, a (40%) chance of rain Tuesday night and a good (50%) chance of rain Wednesday, rain likely (60%) Wednesday night through Thursday night, then cloudy with a good (50%) chance of rain Friday highs from 52-55 and back near 50 Thursday lows 39-45. (seasonal averages high 57 low 42).
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Forecast for the Cascades of Lane County: A mix of clouds and sun today, mostly cloudy with a slight (20%) chance of rain and snow this evening, a good (50%) chance of rain and snow late tonight, a good (50%) chance of rain Sunday (0.25 in. of rain possible), rain and snow likely (60%) Sunday night (2-5 in. of snow possible, 0.50 in. of rain possible), snow showers likely (60%) Monday, then a (30%) chance of snow showers Monday night free air freezing level 4,500 ft. today, snow level 4,000 ft. tonight, 5,000 ft. Sunday, then falling to 4,500 ft, Sunday night, 2,500 ft. Monday afternoon, then 3,000 ft. Monday night highs 38-43 falling to near 32 Monday lows 22-29 falling to 19 Monday night. Mostly cloudy with a good (50%) chance of rain and snow showers Tuesday through Wednesday, snow likely (60%) Wednesday night and Thursday, then rain and snow likely (60%) Thursday night and Friday snow level 3,500 ft. Tuesday, then 3,000 ft. Tuesday night, 3,000 ft. Wednesday, 2,500 ft Wednesday night and Thursday, 4,000 ft. Thursday night, then 4,500 ft. Friday highs 38-42 lows 22-29.
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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.