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Advisories: NONE AT THIS TIME.
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A high pressure ridge (“Arch” shape on yellow line) pulled away from us and a trough of low pressure (“U” shape on the yellow line) took over returning the wet weather pattern. Another high pressure ridge cleared us out today. A warm front will push through returning the rain tonight. There will be even more frontal systems (position shown is Tuesday) sliding over the high pressure that will keep the showers around into next week.
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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 this evening, rain late tonight (0.10 in. of rain possible), rain (0.25 in. of rain possible) Monday (Presidents’ Day), mostly cloudy with rain likely (60%) Monday night (0.10 in of rain possible), cloudy with rain likely (60%) Tuesday AM, a good (50%) chance of rain in the afternoon (0.10 in of rain possible), cloudy with a good (50%) chance of rain (under 0.10 in of rain possible) Tuesday night, mostly cloudy with rain Wednesday, then a good (50%) chance of showers Wednesday night lows 36-45 cooling to near 40 Wednesday night highs 48-55. Mostly cloudy with a slight (20%) chance of showers Thursday and Thursday night, a slight (20%) chance of rain Friday, cloudy with a good (50%) chance of rain Friday night, mostly cloudy with a good (50%) chance of rain Saturday, rain likely (60%) Saturday night, then mostly cloudy with rain and snow likely (60%) Sunday (snow level 1,000 ft.) highs 54-48 lows near 35. (seasonal averages high 52 low 35)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain likely (60%) this evening and rain late tonight (snow level 3,500 ft. falling to 3,000 ft. late, under 0.10 in. of rain possible), mostly cloudy with rain (AM snow level 3,500 ft., 0.20 in. of rain possible) Monday (Presidents’ Day), cloudy with evening showers likely (60%), a (40%) chance of showers (0.10 in. of rain possible) late Monday night, cloudy with a good (50%) chance of AM rain Tuesday, a (40%) chance of showers Tuesday afternoon (0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of showers Tuesday night, a (40%) chance of rain Wednesday, then mostly cloudy with a (30%) chance of showers Wednesday night lows 40-48 cooling to near 42 Wednesday night highs 52-58. Mostly cloudy Thursday, mostly cloudy and colder with areas of fog late Thursday night, mostly cloudy Friday, a good (50%) chance of rain Friday night and Saturday, rain and snow likely (60%) Saturday night, then mostly cloudy with a good (50%) chance of rain and snow Sunday highs 56-60 cooling to near 47 Sunday lows 35-40 cooling to near 36 Saturday night. (seasonal averages high 54 low 37)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with rain likely (60%) this evening, increasing to rain (0.15 in. of rain possible) late tonight and breezy (wind: S 15-25 mph at the shore and S 10-15 mph inland), rain (0.30 in. of rain possible) Monday (Presidents’ Day) and breezy (wind: SW 15-25 mph at the shore decreasing to SW 10-15 mph in the afternoon and SW 10-15 mph inland), cloudy with coastal showers likely (60%) in the evening and a good (50%) chance of showers (0.10 in. of rain possible) late Monday night then evening showers likely (60%) inland and a good (50%) chance of showers late at night, cloudy with a good (50%) chance of AM rain Tuesday, a (40%) chance of showers in the afternoon (0.10 in. of rain possible), mostly cloudy with a (30%) chance of showers Tuesday night, a (30%) chance of rain Wednesday, then mostly cloudy with a (30%) chance of showers Wednesday night lows 43-49 cooling to near 44 Wednesday night highs 50-56. Mostly cloudy Thursday through Friday, a (30%) chance of rain and breezy Friday night, a good (50%) chance of rain and breezy Saturday, rain and snow likely (60%) Saturday night, then mostly cloudy with a good (50%) chance of rain Sunday highs 56-50 lows near 44. (seasonal averages high 53 low 40).
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Forecast for the Cascades of Lane County: Mostly cloudy with a slight (20%) chance of rain and snow this evening, snow late tonight (1-3 in. of snow possible, 0.25 in. of rain possible), rain and snow (1-3 in. of snow possible, 0.25 in. of rain possible) Monday (Presidents’ Day), rain and snow (1-3 in. of snow possible, 0.25 in. of rain possible) Monday night, cloudy with AM rain, a (40%) chance of rain Tuesday afternoon, mostly cloudy with a good (50%) chance of rain Tuesday night, AM rain, rain and snow Wednesday afternoon, then mostly cloudy with a good (50%) chance of rain and snow showers Wednesday night snow level 2,500 ft. tonight, 3,500 ft. Monday, 4,500 ft. Monday night, 7,000 ft. Tuesday and Tuesday night, 5,500 ft. Wednesday, then 5, 000 ft. Wednesday night lows 25-35 cooling to near 30 Wednesday night highs 35-42. Mostly cloudy with a (30%) chance of rain and snow showers Thursday, a slight (20%) chance of rain and snow showers Thursday night, just mostly cloudy Friday, a (40%) chance of rain and snow Friday night, mostly cloudy with a good (50%) chance of rain and snow Saturday, then snow likely (60%) Saturday night and Sunday snow level 5,000 ft. Thursday, 5,500 ft. Thursday night, free air freezing level 7,000 ft. Friday, snow level 5,000 ft. Friday night, 4,000 ft. Saturday, then at the surface Saturday night and Sunday highs 40-37 lows 25-30 cooling to near 23 Saturday night.
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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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