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Check out my new column for the Eugene Daily News What I Used To Call Unusual.
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Here is my weekly weather quiz question. What is “orographic lifting?” 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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An upper level trough of low pressure (shaded “U”shape) is sliding away from the Pacific Northwest. Then here comes surface high pressure (Blue “H” over the ocean) combined with high pressure aloft (Shaded “Arch” shape moving into Oregon) that will keep us relatively dry until late Thursday. A weak surface high pressure area (position shown is Saturday) will bring sunshine back for the weekend.
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Advisories: A FROST ADVISORY IS IN EFFECT THROUGH 8 AM TODAY FOR THE SOUTH CENTRAL OREGON COAST, THE SOUTH OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY. A FREEZE WARNING IS IN EFFECT THROUGH 8 AM TODAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Partly cloudy with patchy frost early this AM, a mix of clouds and sun this afternoon, becoming cloudy with a slight (20%) chance of rain late tonight through Thursday night, rain likely (70%) Friday, then mostly cloudy with a good (50%) chance of showers at night highs 60-56 lows 39-46 cooling to 43 Friday night. Mostly cloudy with a slight (20%) chance of showers Saturday, partly cloudy Saturday night, a mix of clouds and sun Sunday, then partly cloudy Sunday night through Tuesday highs 60-70 lows 38-42. (seasonal averages high 61 low 40)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with areas of patchy frost this AM, mostly cloudy this afternoon, mostly cloudy with a slight (20%) chance of rain tonight, cloudy with a slight (20%) chance of rain Thursday AM, partly cloudy with a slight (20%) chance of rain in the afternoon, mostly cloudy with a slight (20%) chance of rain late Thursday night, a (30%) chance of rain Friday AM, rain likely (70%) in the afternoon, then mostly cloudy with a (40%) chance of showers at night highs 62-68 cooling to 63 Friday lows 40-48. Mostly cloudy with a slight (20%) chance of showers Saturday, just partly cloudy Saturday night through Monday, mostly clear Monday night, then mostly sunny Tuesday highs 65-76 lows 43-47. (seasonal averages high 63 low 42)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with areas of inland frost this AM, mostly cloudy this afternoon, a slight (20%) chance of rain late tonight, mostly cloudy with a slight (20%) chance of AM coastal rain, partly cloudy Thursday afternoon, mostly cloudy with a slight (20%) chance of rain late at night, a (30%) chance of AM rain, then mostly cloudy with a good (50%) chance of showers Friday afternoon and a (30%) chance of showers at night highs 54-58 cooling to 54 Friday lows 42-49. Mostly cloudy with a slight (20%) chance of showers Saturday, just mostly cloudy Saturday night and Sunday, partly cloudy Sunday night and Monday, mostly clear at night, then mostly sunny Tuesday highs 57-67 lows 45-49. (seasonal averages high 55 low 43)
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Forecast for the Cascades of Lane County: A partly cloudy start with more clouds gathering throughout the afternoon, mostly cloudy with a slight (20%) chance of rain and snow late tonight, a (30%) chance of rain and snow Thursday AM, a slight (20%) chance of rain in the afternoon, cloudy with a slight (20%) chance of rain late Thursday night, rain Friday AM, rain likely (60%) in the afternoon, then mostly cloudy with a good (50%) chance of showers at night free air freezing level 3,500 ft. rising to 5,000 ft. today, snow level 4,500 ft. tonight, 4,500 ft. rising to 6,000 ft. Thursday afternoon, 6,500 ft. Thursday night through Friday night highs 44-48 cooling to 42 Friday lows 27-32. Mostly cloudy with a slight (20%) chance of showers Saturday, then partly cloudy Saturday night through Tuesday snow level 5,500 ft. Saturday, free air freezing level 7,500 ft. at night and Sunday, 8,000 ft. Sunday night and Monday, then 9,000 ft. Monday night and 10,000 ft. Tuesday highs 47-58 lows 29-36.
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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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