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An upper level low is still spinning around offshore (see the blue arrows moving in a counterclockwise direction), but it is moving slowly to the North. High pressure takes over for Sunday for a nice day then low pressure will be bringing with it a chance for some precipitation. A new frontal system will move in Monday bringing the rain and as you can see by Tuesday it will be past us.
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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 evening with a slight (20%) chance of showers and partly cloudy late tonight low near 43. AM clouds with a mix of clouds and sun Sunday then a slight (20%) chance of showers late Sunday night high 70 low 45. Rain likely (60%) and cooler Monday and Monday night then showers likely (60%) Tuesday highs 65-55 low 39. Mostly cloudy with a (40%) chance of showers Tuesday night and Wednesday low 36 high 54. Just a slight (20%) chance of showers Wednesday night then a (30%) chance of showers Thursday through Saturday highs 63-59 lows 37-40.
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy tonight and partly cloudy Sunday low 42 high 74. Mostly cloudy with a slight (20%) chance of rain late Sunday night, then rain likely (60%) and cooler Monday and Monday night lows 47-43 high 67. Showers likely (60%) Tuesday and a (40%) chance of showers Tuesday night and Wednesday highs 54-58 low 36. Just a slight (20%) chance of showers Wednesday night and Thursday low 37 high 62. Mostly cloudy with a (30%) chance of showers Thursday night and a slight (20%) chance Friday low 39 highs 66 . Mostly cloudy with a slight (20%) chance of showers Friday night and a (40%) chance of showers Saturday low 40 high 67.
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy tonight and Sunday low 45 high 63. Mostly cloudy with a (30%) chance of rain late Sunday night low 45. Mostly cloudy and cooler with rain Monday and Monday night high 57 low 44. Mostly cloudy with a good (50%) chance of showers Tuesday, (40%) Tuesday night and (30%) Wednesday highs 55-57 low 40. Just a slight slight (20%) chance of showers Wednesday night and Thursday low 37 high 56. Mostly cloudy with a(30%) chance of showers Thursday night and Friday and a (40%) chance Saturday lows near 36-40 highs 55-58.
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Forecast for the Cascades of Lane County: Mostly cloudy with a slight (20%) chance of showers tonight snow level 6,500′ low 34. A mix of clouds and sun Sunday and warmer free air freezing level 9,000′ in the afternoon then mostly cloudy with a slight (20%) chance of showers at night snow level 8,000′ high near 63 low 38. Rain likely (60%) and cooler Monday then rain Monday night snow level 7,000′ falling to 4,500′ at night high 54 low 28. Mostly cloudy rain and snow showers likely (60%) Tuesday and a (40%) chance Tuesday night snow level 4,500′ falling to 4,000′ high 39 low 23. Mostly cloudy with a (40%-30%) chance of rain and snow showers Wednesday through Saturday snow level 4,500′ falling to 4,000′ Saturday highs 43-56 cooling to 48-45 Friday and Saturday lows 24-29.
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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