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Here it is my new weekly weather quiz question. This is an easy “Fall” question. What makes the leaves lose their green color and fall off of the trees? Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.
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Advisories: A HIGH WIND WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE NORTH AND CENTRAL OREGON COAST. A HIGH WIND WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A WIND ADVISORY IS IN EFFECT UNTIL 4 AM WEDNESDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.
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An upper air trough of low pressure (“U” shape on the orange jet stream line) is sending even more moist cooler air our way. One frontal system came through already and a second even stronger one is sweeping through Oregon dropping more rain on us. There will be a break in the wet weather, but how long will it last?
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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 with rain tonight (0.50 in. of rain possible), AM showers, showers with a slight (20%) chance of thunderstorms Wednesday afternoon (0.10 in. of rain possible, more in storms), a (40%) chance of evening showers, a (30%) chance of showers late Wednesday night, just mostly cloudy Thursday, partly cloudy Thursday night, a mix of clouds and sun with a slight (20%) chance rain Friday, then mostly cloudy with a slight (20%) chance of rain Friday night lows 46-40 warming to near 46 Friday night highs 57-65. A mix of clouds and sun Saturday, mostly cloudy with a (40%) chance of rain Saturday night, a good (50%) chance of rain Sunday, a (40%) chance of rain Sunday night and Monday (Columbus Day), then mostly cloudy with a (40%) chance of showers Monday night and Tuesday highs 66-64 lows 46-50. (seasonal averages high 70 low 43)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain tonight, patchy AM fog, showers likely (60%) with isolated thunderstorms Wednesday (small hail possible), a (40%) chance of showers Wednesday night, patchy fog late at night and Thursday AM, mostly cloudy with a slight (20%) chance of showers Thursday AM, mostly cloudy Thursday afternoon through Friday night lows 48-40 warming to 46 Friday night highs 62-70. Mostly cloudy Saturday, mostly cloudy with a (40%) chance of rain Saturday night, cloudy with a (40%) chance of showers Sunday and Sunday night, a (30%) chance of rain Monday (Columbus Day), a slight (20%) chance of showers Monday night, then a (30%) chance of rain Tuesday highs 72-65 lows near 48. (seasonal averages high 72 low 47)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Cloudy with evening coastal rain then rain and isolated thunderstorms late tonight (small hail possible), rain inland tonight and windy (wind: inland S 20-25 mph then SW 10-20 mph this evening and late at night, at the shore wind: S 25-35 mph then SW 10-15 mph late), showers and isolated thunderstorms Wednesday with small hail possible, coastal showers likely (60%) in the evening, mostly cloudy and a good (50%) chance of showers Wednesday night, a good (50%) chance of showers inland Wednesday night, patchy fog late Wednesday night and Thursday AM, mostly cloudy with a slight (20%) chance of showers Thursday AM, just mostly cloudy afternoon and through Friday, mostly cloudy with a slight (20%) chance of showers Friday night lows 48-44 warming to near 49 Friday night highs 57-65. Mostly cloudy Saturday, mostly cloudy with a (40%) chance of rain Saturday night, cloudy with a (40%) chance of showers Sunday, a (30%) chance of showers Sunday night, a (40%) chance of rain Monday (Columbus Day), a (40%) chance of showers Monday night, then mostly cloudy with a (30%) chance of rain Tuesday highs 64-66 lows 48-52. (seasonal averages high 63 low 47).
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Forecast for the Cascades of Lane County: Cloudy with rain tonight (0.50 in. of rain possible), rain and snow showers Wednesday AM, rain and snow showers with a slight (20%) chance of afternoon thunderstorms (1 in. of snow possible, 0.10 in. of rain possible), rain and snow showers likely (60%) in the evening, a good (50%) chance of rain and snow showers late Wednesday night (1 in. of snow possible, 0.10 in. of rain possible), mostly cloudy with a (40%) chance of rain and snow showers Thursday AM, a (30%) chance of rain and snow showers Thursday, partly cloudy with a slight (20%) chance of showers Thursday night, a mix of clouds and sun Friday, then mostly cloudy with a slight (20%) chance of rain Friday night snow level 6,000 ft. tonight, 5,000 ft. Wednesday and Wednesday night, 4,500 ft. rising to 4,500 ft. Thursday, 6,000 ft. Thursday night, free air freezing level 10,000 ft. Friday, then snow level above 8000 ft. Friday night lows near 35 highs 42-55. A mix of clouds and sun Saturday, mostly cloudy with a (40%) chance of rain Saturday, mostly cloudy with a slight (20%) chance of rain Saturday night, a good (50%) chance of rain Sunday, mostly cloudy with a (40%) chance of showers Sunday night and Monday (Columbus Day), then mostly cloudy with a (30%) chance of rain Monday night, then a (40%) chance of rain Tuesday snow level above 8,000 ft. Saturday through Tuesday highs 54-59 lows 38-40.
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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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