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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 WATCH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST, 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. A warm front (still offshore to our Southwest) will come in first then the cold front behind it Tuesday giving us the cloudiness and moisture of early Autumn.
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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: Cloudy with showers likely (60%) this evening, a good (50%) chance of showers tonight (0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of showers Tuesday AM, a good (50%) chance of showers Tuesday afternoon (0.10 in. of rain possible), rain Tuesday night (0.50 in. of rain possible), showers likely (60%) Wednesday AM, showers with a slight (20%) chance of thunderstorms Wednesday afternoon, a (40%) chance of evening showers, a slight (20%) chance of showers late Wednesday night, just mostly cloudy Thursday, then partly cloudy with a slight (20%) chance of showers Thursday night lows 47-40 warming to near 45 Thursday night highs 64-59. A mix of clouds and sun with a slight (20%) chance rain Friday and Saturday, mostly cloudy with a slight (20%) chance of rain Friday night, mostly cloudy with a (40%) chance of rain Saturday night, a good (50%) chance of rain Sunday, a (40%) chance of rain Sunday night, then a (30%) chance of rain Monday (Columbus Day) highs 63-66 lows 43-50. (seasonal averages high 70 low 43)
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Forecast for the Umpqua Basin including Roseburg: Cloudy with showers likely (60%) this evening, a good (50%) chance of showers tonight and Tuesday AM, rain Tuesday afternoon and Tuesday night, showers likely (60%) with isolated thunderstorms Wednesday (small hail possible), a (40%) chance of showers Wednesday night, mostly cloudy with a slight (20%) chance of showers Thursday, then partly cloudy with a slight (20%) chance of showers Thursday night lows 48-45 highs 64-58 warming to 63 Thursday. Mostly cloudy with a slight (20%) chance of showers Friday and Friday night, just mostly cloudy Saturday, then mostly cloudy with a (40%) chance of showers Saturday night through Sunday, then a (30%) chance of showers Sunday night and Monday (Columbus Day) highs 69-72 cooling to 66 Monday lows near 47. (seasonal averages high 72 low 47)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with coastal showers likely (60%) tonight, evening showers likely (60%) inland and a good (50%) chance of showers inland late tonight, cloudy with a (40%) chance of showers Tuesday AM, rain in the afternoon and breezy (wind: S 15-25 mph), rain inland Tuesday night, evening coastal rain then rain and isolated thunderstorms late Tuesday night and windy (wind: inland S 20-30 mph then SW 10-15 mph late at night, at the shore wind: S 25-35 mph then SW 15 mph late), showers and isolated thunderstorms Wednesday with small hail possible, evening coastal showers likely (60%) mostly cloudy and a good (50%) chance of showers Wednesday night, a good (50%) chance of showers inland Wednesday night, mostly cloudy with a slight (20%) chance of showers Thursday, then partly cloudy with a slight (20%) chance of showers Thursday night lows 50-47 highs 63-58. Mostly cloudy with a slight (20%) chance of showers Friday and Friday night, just mostly cloudy Saturday, mostly cloudy with a (40%) chance of showers Saturday night through Sunday, then a (30%) chance of showers Sunday night and Monday (Columbus Day) highs 62-66 lows 48-52. (seasonal averages high 63 low 47).
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Forecast for the Cascades of Lane County: Mostly cloudy with showers tonight (0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of AM rain, rain likely (60%) Tuesday afternoon, rain Tuesday night (0.50 in. of rain possible), rain and snow showers Wednesday with a slight (20%) chance of afternoon thunderstorms, rain and snow showers likely (60%) in the evening, a good (50%) chance of rain and snow showers late Wednesday night, mostly cloudy with a slight (20%) chance of rain and snow showers Thursday, then partly cloudy with a slight (20%) chance of showers Thursday night snow level 6,000 ft. tonight, 5,500 ft. Tuesday, 6,500 ft. Tuesday night, 5,000 ft. Wednesday, 4,500 ft. Wednesday night and Thursday, then above 8,000 ft. Thursday night lows 37-33 highs 50-44. A mix of clouds and sun Friday with a slight (20%) chance of Friday night, a mix of clouds and sun Saturday, mostly cloudy with a slight (20%) chance of rain Saturday night, a good (50%) chance of rain Sunday, then mostly cloudy with a (40%) chance of rain Sunday night, then a (30%) chance of rain Monday snow level above 8,000 ft. Friday and Friday night, free air freezing level 12,000 ft. Saturday then snow level above 8,000 ft. Saturday night through Monday highs 52-58 lows 36-40.
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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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Get your local Eugene-Springfield news on-line at Eugene Daily News.com.
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