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Advisories: NONE AT THIS TIME.
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A high pressure ridge (“Arch” shape on brown line) has been building over us and allowed for hot weather. The ridge will weaken today and Tuesday along with a weak cold front (position shown is Wednesday AM) that will slide by mainly north of us Tuesday not having any effect on our weather except to cool us down a bit and making us feel like the hot weather is over. The high pressure ridge will strengthen again for another round of increasing temperatures back to hot.
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: A mix of clouds and sun with some patchy fog this AM, sunny and a bit cooler this afternoon, partly cloudy tonight and Tuesday AM, sunny in the afternoon, clear in the evening, partly cloudy Tuesday night, a mix of clouds and sun Wednesday AM, sunny and warmer in the afternoon, then clear Wednesday night highs 88-86 warming to near 95 Wednesday lows 53-57 cooling to 54 Wednesday night. Sunny and hot Thursday, clear Thursday night, sunny Friday AM, partly cloudy with a slight (20%) chance of thunderstorms Friday afternoon and evening, mostly cloudy Friday night and Saturday AM, partly cloudy with a slight (20%) chance of thunderstorms Saturday afternoon and evening, mostly cloudy late Saturday night and Sunday AM, then mostly sunny Sunday afternoon highs 99-82 lows near 54. (seasonal averages high 83 low 51)
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Forecast for the Umpqua Basin including Roseburg: Partly cloudy this AM, sunny and a bit cooler this afternoon, mostly clear tonight, sunny Tuesday, mostly clear in the evening, partly cloudy Tuesday night and Wednesday AM, sunny and warmer in the afternoon, then mostly clear Wednesday night highs 94-92 warming to 98 Wednesday lows 56-62. Mostly sunny and warmer Thursday, mostly clear Thursday night, partly cloudy with a slight (20%) chance of thunderstorms Friday through Saturday night, partly cloudy Sunday AM, then sunny Sunday afternoon highs 100-85 lows 63-56. (seasonal averages high 85 low 56)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Cloudy with patchy coastal fog this AM, partly cloudy this afternoon, partly cloudy with patchy fog late tonight and early Tuesday AM, partly cloudy in the afternoon and evening, mostly cloudy with patchy fog late Tuesday night and Wednesday AM, sunny in the afternoon, partly cloudy with patchy fog late Wednesday night highs near 65 lows near 55. Partly cloudy with patchy AM and late night fog Thursday and Thursday night, patchy fog Friday AM, partly cloudy with a slight (20%) chance of thunderstorms Friday afternoon and Friday night, patchy fog Saturday AM, partly cloudy and even cooler Saturday afternoon through Sunday highs 75-66 lows 56-54. (seasonal averages high 65 low 53).
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Forecast for the Cascades of Lane County: Sunny and a bit cooler today, mostly clear and cooler tonight, sunny and even cooler Tuesday, mostly clear Tuesday night, mostly sunny and warmer in the afternoon, then clear Wednesday night free air freezing level 15,000 ft. today, then 16,000 ft. tonight through Wednesday night highs 80-75 warming to 82 Wednesday lows 52-58. Mostly sunny and warmer Thursday, mostly clear Thursday night, sunny Friday AM, partly cloudy with a slight (20%) chance of Thunderstorms in the afternoon and evening, partly cloudy with a slight (20%) chance of showers late Friday night, partly cloudy with a slight (20%) chance of showers Saturday AM, a slight (20%) chance of thunderstorms Saturday afternoon through Saturday night, partly cloudy with a slight (20%) chance of showers Sunday AM, then mostly sunny Sunday afternoon free air freezing level 16,000 ft. Thursday through Friday, then snow level above 8,000 ft. Friday night through Sunday highs 85-70 lows 60-50.
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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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