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Here is my weekly weather quiz question. On Groundhog Day a famous groundhog in Pennsylvania predicts the length of the rest of the winter. The Europeans brought this tradition with them when they came to “The Americas.” What was the animal they used in their native land that they didn’t find here? Please post your answer as a comment after the forecasts. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.
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A trough of low pressure (See “U” shape offshore) has been keeping us in a cool moist airflow for quite some time. It is moving across Oregon with a high pressure ridge behind it. The ridge will bring sunshine to usher in Autumn. The Autumnal Equinox occurs tomorrow, Wednesday, at 8:09 PM PDT beginning the Fall season and the full Harvest moon reveals itself early Thursday morning. A frontal system (position shown on Friday) will move through on Thursday. Another upper level low will move down from along British Columbia sending surface waves into the Pacific Northwest. A frontal system will push through the state late in the weekend (Sunday) enhancing the wet Autumn weather.
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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: Partly cloudy this evening, mostly cloudy with patchy fog late tonight and Wednesday AM, a mix of clouds and sun Wednesday afternoon, partly cloudy with patchy fog late Wednesday night, a mix of clouds and sun Thursday AM, mostly cloudy with a slight (20%) chance of rain Thursday afternoon, then partly cloudy Thursday night lows 46-50 highs 72-68 . A mix of clouds and sun and a bit warmer Friday and Saturday, partly cloudy at night, a mix of clouds and sun Sunday AM, mostly cloudy Sunday afternoon through Monday night, mostly cloudy with a slight (20%) chance of rain Tuesday highs 76-80 cooling to 75 Sunday, warming to 80 Monday, back down to 75 Tuesday lows 52-54. (seasonal averages high 75 low 46)
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Forecast for the Umpqua Basin including, Roseburg: Mostly cloudy with areas of fog late tonight and Wednesday AM, partly cloudy Wednesday afternoon and evening, mostly cloudy at night, mostly cloudy with a slight (20%) chance of rain Thursday, mostly cloudy in the evening, and partly cloudy Thursday night through Friday night lows 46-49 highs 72-79. Partly cloudy Saturday and Saturday night with a slight (20%) chance of rain late Saturday night, partly cloudy with a slight (20%) chance of rain Sunday AM, mostly cloudy Sunday afternoon through Monday night, and mostly cloudy with a slight (20%) chance of rain Tuesday afternoon highs hovering between 78-80 lows 52-55. (seasonal averages high 80 low 49)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with areas of patchy fog late tonight and Wednesday AM, partly cloudy in the afternoon, and evening, mostly cloudy Wednesday night, mostly cloudy with a slight (20%) chance of rain Thursday, mostly cloudy in the evening, then partly cloudy Thursday night lows 52-46 highs 63-65. Partly cloudy Friday through Saturday, partly cloudy Saturday night, partly cloudy with a slight (20%) chance of rain late Saturday night and Sunday AM, mostly cloudy Sunday afternoon through Monday night, mostly cloudy with a slight (20%) chance of rain Tuesday afternoon highs 64-70 cooling to 63 Monday and 60 Tuesday lows 52-55. (seasonal averages high 67 lows 50).
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Forecast for the Cascades of Lane County: Partly cloudy tonight, a mix of clouds and sun and warmer Wednesday, partly cloudy Wednesday with a slight (20%) chance of rain at night, mostly cloudy with a slight (20%) chance of rain Thursday afternoon and evening, and partly cloudy late Thursday night, free air freezing level 10,000 ft. tonight, 9,000 ft. Wednesday, snow level above 8,000 ft. Wednesday night and Thursday, 8,000 ft. Thursday night lows 40-37 highs 57-55. A mix of clouds and sun Friday and Saturday, mostly clear Friday night, partly cloudy with a slight (20%) chance of rain late Saturday night, a mix of clouds and sun Sunday AM, mostly cloudy with a slight (20%) chance of showers Sunday afternoon and evening, mostly cloudy Monday and Monday night, then mostly cloudy with a slight (20%) chance of rain Tuesday free air freezing level 9,000 ft. Friday, 11,000 ft. Friday night and Saturday, snow level above 8,000 ft. Saturday night through Tuesday highs 65-72 lows 42-46.
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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.