_______________
A high pressure ridge (the “arch” formed by the blue arrows sitting over the Pacific Northwest) is weakening and will be replaced by an upper level low (the “U” formed by the blue arrows) behind it. Notice the blue arrows from the low are moving toward us and bringing the airflow more from the Southwest which brings in more moisture and a new frontal system that will move in from the Northwest. By Wednesday another storm system will be poised to push more rain into Oregon.
________________
Advisories: NONE AT THIS TIME
________________
The Pollen Count Forecast for the Eugene-Springfield area : Trees MODERATE, Grass LOW, weeds Absent.
__________________
Here are your detailed forecasts. **
_________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with a (40%) chance of scattered showers and a slight (20%) chance of afternoon and evening thunderstorms then a (40%) chance of scattered showers tonight high near 70 low 48. Mostly cloudy with a showers likely (60%) Monday and Monday night high 68 low 46. Partly cloudy with a (50%) chance of showers Tuesday with partly cloudy skies in the evening and mostly cloudy at night with a (30%) chance of showers high 63 low near 46. Mostly cloudy with a (30%) chance of rain Wednesday and Wednesday night then mostly cloudy with a (30%) chance of showers Thursday through Friday night highs 66-60 lows 47-43. Mostly cloudy Saturday morning then a mix of clouds and sun and just a slight (20%) chance of showers high 65.
_________________
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a slight (20%) chance of thunderstorms today and this evening then a slight (20%) chance of showers late tonight high 73 low 52 . Mostly cloudy with a (50%) chance of showers Monday AM then showers likely (60%) in the afternoon and Monday night high 70 low 50. Mostly cloudy with a (30%) chance of showers Tuesday and Tuesday night high 70 low 46 . A (30%) chance of rain Wednesday then a (30%) chance of showers Wednesday night and Thursday, (40%) Thursday night through Friday night, and (30%) Saturday highs 70-64 lows 46-42 .
_________________
Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy today with a slight (20%) chance of afternoon thunderstorms inland then a slight (20%) chance of evening showers at the shore and a (30%) chance of evening thunderstorms inland high 55 low near 47. Mostly cloudy with showers likely (60%) at the shore and a (40%) chance of showers Monday AM then likely (60%) in the afternoon inland then showers likely (60%) Monday night both at the shore and inland high 60 low 49. Mostly cloudy with a (40%) chance of showers Tuesday and Tuesday night high 58 low 48. A (40%) chance of rain Wednesday high 62. Mostly cloudy with a (40%) chance of showers Wednesday night, (30%) Thursday, (40%) Thursday night through Friday night, and (30%) Saturday lows 50-45 highs 56-60.
_________________
Forecast for the Cascades of Lane County: Mostly cloudy with scattered showers and a (30%) thunderstorms today and this evening snow level above 8,000 ft. high 64 low 41. Mostly cloudy showers likely (60%) Monday with a slight chance of afternoon thunderstorms and showers likely (60%) Monday evening a (20%) chance of showers at night snow level above 8,000 ft. falling to 6,000 ft. at night high 57 low 35. Mostly cloudy with a (40%) chance of showers Tuesday and Tuesday night snow level 6,000 ft. rising to 8,000 ft. at night high 50 low 30. Mostly cloudy with a (30%) chance of rain Wednesday and Wednesday night snow level 7,000 ft. falling to 6,000 ft. high 56 low 43. Mostly cloudy with a (30%) chance of showers Thursday and a (40%) chance Thursday night through Saturday snow level 6,000 ft. Thursday, 5,500 ft. Thursday night, 5,000 ft. Friday, and 4,000 ft. Friday night and Saturday highs 46-50 lows near 30 .
_________________
**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.