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The Atlantic-Caribbean tropical storm season has begun. For updates on where tropical storms or hurricanes are headed just go to The National Weather Service Hurricane Center website.
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Upper level low pressure (“U” shape offshore) is sliding to the South and will move Eastward changing our airflow from Westerly to Easterly sending warmer dry air at us from the East and Southeast. A frontal system will pass South of us and should bring us only some more clouds. The weather looks fine for the main events of the Prefontaine Classic Saturday as summer-like temperatures bathe us for a day or two. The shower chances will return by late Monday and Monday night.
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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 clear tonight, partly cloudy and much warmer Saturday, partly cloudy Saturday night through Sunday evening and cooler, becoming mostly cloudy late Sunday night, then mostly cloudy with a slight (20%) chance of showers Monday and Monday night lows 42-52 highs 84-64. Mostly cloudy with a slight (20%) chance of showers Tuesday through Wednesday, just mostly cloudy Wednesday night, a mix of clouds and sun Thursday, then mostly cloudy Thursday night and Friday highs 63-70 lows near 44. (seasonal averages high 70 low 45)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a slight (20%) chance of showers and a slight (20%) chance of isolated thunderstorms this evening, mostly cloudy Saturday AM, partly cloudy Saturday afternoon, mostly cloudy Saturday night, mostly cloudy with a slight (20%) chance of AM showers Sunday, a (30%) chance of showers and a slight (20%) chance of thunderstorms Sunday afternoon and evening, a (40%) chance of showers Sunday night, mostly cloudy with a (30%) chance of showers Monday, a slight (20%) chance of showers Monday night lows 48-57 cooling to 48 Monday night highs 85-67. Mostly cloudy with a slight (20%) chance of showers Tuesday through Wednesday, mostly cloudy Wednesday night and Thursday AM, then partly cloudy with a slight (20%) chance of showers Thursday afternoon through Friday highs 50-45 lows 50-47. (seasonal averages high 75 low 48)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a slight (20%) chance of showers this evening, mostly cloudy Saturday AM, partly cloudy Saturday afternoon with a slight (20%) chance of inland afternoon showers, partly cloudy with a slight (20%) chance of inland showers in the evening, mostly cloudy late Saturday night, mostly cloudy with a (30%) chance of showers Sunday, then a (30%) chance of showers Sunday night and Monday, just mostly cloudy Monday night lows 46-53 cooling to 47 Monday night highs 70-56. Mostly cloudy with a slight (20%) chance of showers Tuesday through Wednesday, then just mostly cloudy Wednesday night, mostly cloudy with a slight (20%) chance of showers Thursday through Friday highs 53-62 lows 52-46. (seasonal averages high 63 low 49).
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Forecast for the Cascades of Lane County: Partly cloudy with a slight (20%) chance of showers or a thunderstorm South of Mt. Jefferson this evening (mostly clear to the North), mostly cloudy at night, partly cloudy and warmer Saturday and Saturday night, a slight (20%) chance of showers Sunday AM, a mix of clouds and sun afternoon with a (30%) chance of showers (under 0.10 in. of rain possible) and a slight (20%) chance afternoon and evening thunderstorms, mostly cloudy with a good (50%) chance of showers late Sunday night (0.25 in. of rain possible), then mostly cloudy Monday with a (40%) chance of showers, and a (30%) chance of showers Monday night snow level 8,000 ft. tonight, free air freezing level 10,000 ft. Saturday, 11,000 ft. Saturday night, snow level 8,000 ft. Sunday, above 8,000 ft. Sunday night through Monday night lows 34-42 cooling to 32 Monday night highs 69-50. Mostly cloudy with a slight (20%) chance of showers Tuesday and Tuesday night and Wednesday, a slight (20%) chance of showers Wednesday night through Thursday night, then partly cloudy with a (30%) chance of showers Friday snow level 8,000 ft. Monday through Tuesday, 5,500 ft. Tuesday night and Wednesday, 6,500 ft. Wednesday night, and rising to 7,000 ft. Thursday and Thursday night, then above 8,000 ft. Friday highs 45-60 cooling to 55 Friday lows 32-35.
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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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Get your local Eugene /Springfield news on-line at EugeneDailyNews.com.
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