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Advisories: NONE AT THIS TIME.
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Another upper air trough of low pressure (“U” shape on the orange jet stream line) is moving toward the Pacific Northwest setting us up for a wet week with a possible break about midweek. A frontal system will march through bringing back more clouds and precipitation.
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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 good (50%) chance of rain late tonight (under 0.10 in. of rain possible), cloudy with rain and drizzle Sunday AM, a slight (20%) chance of showers Sunday afternoon, mostly cloudy with a slight (20%) chance of rain late Sunday night, rain ).10 in. of rain possible) Monday (Columbus Day) through Tuesday, then mostly cloudy with a good (50%) chance of rain Tuesday night lows 45-50 cooling to 45 Tuesday night highs 65-60 warming to 65 Tuesday. A mix of clouds and sun with a slight (20%) chance of rain Wednesday, mostly cloudy with a slight (20%) chance of rain Wednesday night, a mix of clouds and sun with a slight (20%) chance of rain Thursday, mostly cloudy with a slight (20%) chance of rain Thursday night, a mix of clouds and sun Friday and Saturday with a (40%) chance of rain, and mostly cloudy with a (40%) chance of rain Friday night highs 64-60 lows 46-42. (seasonal averages high 68 low 42)
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Forecast for the Umpqua Basin including Roseburg: Partly cloudy this evening, mostly cloudy with a slight (20%) of rain late tonight with patchy fog, mostly cloudy with patchy fog and a (40%) chance of rain and drizzle Sunday AM, just mostly cloudy in the afternoon, a slight (20%) chance of rain late Sunday night (under 0.10 in. of rain possible), cloudy with rain (under 0.10 in. of rain possible) Monday (Columbus Day), showers likely (60%) Monday night and Tuesday, then mostly cloudy with a (40%) chance of showers Tuesday night lows 46-53 highs 67-60 warming back to 67 Tuesday. Mostly cloudy with a (40%) chance of showers Wednesday, a slight (20%) chance of showers Wednesday night through Thursday night, a (40%) chance of rain Friday and Friday night (colder), then mostly cloudy with a (40%) chance of showers Saturday highs 68-72 cooling to near 60 Saturday lows 47-38. (seasonal averages high 70 low 46)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy (40%) chance of coastal rain tonight, partly cloudy inland this evening then cloudy with a slight (20%) chance of rain late tonight, then patchy fog later tonight, mostly cloudy with patchy fog and a slight (20%) chance of rain and drizzle Sunday AM, just mostly cloudy in the afternoon, mostly cloudy with a good (50%) chance of rain late Sunday night (under 0.10 in. of rain possible), cloudy with rain (0.25 in. of rain possible) Monday (Columbus Day), showers likely (60%) Monday night and Tuesday (0.10 in. of rain possible), then mostly cloudy with a good (50%) chance of showers Tuesday night lows 50-54 cooling to 48 Tuesday night highs 62-65. Mostly cloudy with a (%) chance of showers Wednesday, a slight (20%) chance of showers Wednesday night through Thursday night, a good (50%) chance of rain and cooler Friday, rain likely (60%) Friday night, then mostly cloudy with a good (50%) chance of showers Saturday highs 63-65 cooling to 55 then warming to 63 Saturday lows 50-46. (seasonal averages high 62 low 47).
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Forecast for the Cascades of Lane County: Partly cloudy this evening, mostly cloudy with a slight (20%) chance of rain late tonight, a slight (20%) chance of rain or drizzle Sunday AM, a mix of clouds and sun with slight (20%) chance of showers Sunday afternoon (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of rain Sunday night, cloudy with rain Monday (Columbus Day) through Tuesday, then mostly cloudy with a good (50%) chance of rain Tuesday night snow level above 8,000 ft. tonight and Sunday, 8,000 ft. Sunday night through Monday night, then 7,000 ft. Tuesday and Tuesday night lows near 38 highs 52-45 warming to 53 Tuesday. A mix of clouds and sun with a (30%) chance of rain Wednesday, mostly cloudy with a slight (20%) chance of rain Wednesday night, a mix of clouds and sun with a slight (20%) chance of rain Thursday, partly cloudy with a slight (20%) chance of rain Thursday night, a mix of clouds and sun with a (40%) chance of rain Friday, mostly cloudy with a good (50%) chance of rain Friday night, then a mix of clouds and sun with a (40%) chance of rain Saturday snow level 7,500 ft. Wednesday, above 8,000 ft. Wednesday night through Friday, 7,500 ft. Friday night, then 7,000 ft. Saturday highs 52-44 lows 36-32.
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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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