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Advisories: A FLASH FLOOD WATCH IS IN EFFECT THROUGH FRIDAY MORNING FOR PARTS OF EASTERN OREGON INCLUDING NORTH CENTRAL OREGON, THE LOWER COLUMBIA BASIN OF OREGON, THE GRAND RONDE VALLEY, WALLOWA COUNTY, THE NORTHERN AND SOUTHERN BLUE MOUNTAINS OF OREGON, THE JOHN DAY BASIN, THE OCHOCO-JOHN DAY HIGHLANDS, THE FOOTHILLS OF THE BLUE MOUNTAINS, AND THE EAST SLOPES OF THE OREGON CASCADES.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with a (40%) chance of showers and a slight (20%) chance of thunderstorms this evening, a slight (20%) chance of thunderstorms late tonight (under 0.10 in. of rain possible, more in storms), cloudy with a slight (20%) chance of showers Friday AM, just partly cloudy Friday afternoon and Friday night, mostly cloudy Saturday AM, mostly sunny in the afternoon, then mostly clear Saturday night, cloudy Sunday AM, then partly cloudy Sunday afternoon and Sunday night lows 58-50 highs 78-82 cooling to 77 Sunday. Partly cloudy Monday AM, mostly sunny in the afternoon, partly cloudy Monday night, then mostly sunny Tuesday through Thursday with mostly clear nights highs 82-85 lows 52-55. (seasonal averages high 84 low 52)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a (40%) chance of scattered showers and a slight (20%) chance of thunderstorms tonight (0.10 in. of rain possible, more in storms), mostly cloudy with a slight (20%) chance of thunderstorms Friday AM, sunny Friday afternoon, mostly clear Friday night, sunny Saturday, clear in the evening, partly cloudy Saturday night, mostly cloudy Sunday AM, then sunny Sunday afternoon, then mostly clear Sunday night lows 59-53 highs 82-87. Mostly sunny Monday, mostly clear at night, then mostly sunny Tuesday through Thursday with mostly clear nights highs 80-86 lows 54-58. (seasonal averages high 85 low 57)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a (40%) chance of isolated evening coastal thunderstorms and scattered showers and isolated thunderstorms late tonight, scattered inland showers and thunderstorms tonight (under 0.10 in. of rain possible, more in storms), mostly cloudy Friday with patchy AM coastal drizzle, mostly cloudy Friday afternoon and Friday night, partly cloudy Saturday AM, sunny in the afternoon, clear in the evening, mostly cloudy Saturday night, cloudy Sunday AM, sunny in the afternoon, then partly cloudy Sunday night lows 55-52 highs 64-60 warming to 64 Sunday. Mostly sunny Monday and Tuesday with mostly clear nights, partly cloudy Wednesday AM, sunny Wednesday afternoon, mostly clear Wednesday night, then mostly sunny Thursday highs 65-62 lows 54-56. (seasonal averages high 65 low 53).
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Forecast for the Cascades of Lane County: Mostly cloudy with showers likely (60%) and a slight (20%) chance of thunderstorms tonight (0.25 in. of rain possible, more in storms), mostly cloudy with a good (50%) chance of showers Friday AM, partly cloudy with a slight (20%) chance of showers Friday afternoon (under 0.10 in. of rain possible), mostly clear Friday night, mostly sunny Saturday, mostly clear Saturday night, partly cloudy Sunday AM, mostly sunny in the afternoon, then partly cloudy Sunday night snow level above 8,000 ft. tonight and Friday, free air freezing level 13,000 ft. Friday night, then 14,000 ft. Saturday through Sunday night lows near 46 highs 66-73 cooling to 68 Sunday. Partly cloudy Monday AM, mostly sunny in the afternoon, mostly clear Monday night, then mostly sunny Tuesday through Thursday with mostly clear nights free air freezing level 14,000 ft. Monday and Monday night, 15,000 ft. Tuesday, then 14,000 ft. Tuesday night through Thursday highs 70-73 cooling back to near 70 Thursday lows 45-48.
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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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