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Check out my new Eugene Daily News column Weather or Not: TBA ASAP.
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Here is my new weekly weather quiz question. Please define the term “backdoor cold front.” 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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Upper level high pressure (Shaded “Arch” shape with blue arrows) cleared us out for a while returning the sunshine. An upper level low (Shaded “U” shape) has taken over and pushed a frontal system through the Pacific Northwest bringing rain and dropping temperatures drastically. This unsettled weather will continue for the rest of the week as the low rotates over and then past us. It looks like there will still be just a chance of showers for the long Memorial Day Holiday weekend so plan accordingly. It will feel the coldest near or on the water. A complex frontal system will be approaching the West Coast Tuesday.
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Advisories: A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 9 AM THURSDAY FOR THE KLAMATH BASIN.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with showers tonight (0.10 in. of rain possible), showers likely (70%) Thursday, showers at night (0.25 in. of rain possible), showers likely (70%) Friday (0.10 in. of rain possible), a (30%) chance of showers in the evening, mostly cloudy Friday night (under 0.10 in. of rain possible), a slight (20%) chance of AM showers, a mix of clouds and sun with a (40%) chance of showers Saturday afternoon, then partly cloudy with a slight (20%) chance of showers Saturday night lows 43-46 cooling to 42 Friday night warming to 45 Saturday night highs 58-67. Mostly cloudy with a (30%) chance of showers Sunday, a slight (20%) chance of showers at night, cloudy with a (30%) chance of rain Monday (Memorial Day), a good (50%) chance of showers at night, rain likely (70%) Tuesday and Tuesday night, then mostly cloudy with showers likely (60%) Wednesday highs 66-63 lows 45-50 cooling to 46 Tuesday night. (seasonal averages high 68 low 44)
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Forecast for the Umpqua Basin including Roseburg: Cloudy with increasing showers this evening, scattered showers late tonight with patchy frost toward AM (0.10 in. of rain possible, snow level 3,500 ft. late), mostly cloudy with a good (50%) chance of showers Thursday AM, showers likely (60%) in the afternoon (snow level 3,500 ft., 0.10 in. of rain possible), showers Thursday night (0.10 in. of rain possible), AM showers likely (70%), a (30%) chance of showers Friday afternoon, a slight (20%) chance of showers at night, then mostly cloudy with a (30%) chance of showers Saturday and Saturday night lows 42-50 highs 60-70. Mostly cloudy with a (30%) chance of showers Sunday, a slight (20%) chance of showers at night, mostly cloudy with a (30%) chance of showers Monday (Memorial Day), mostly cloudy with showers likely (60%) Monday night through Tuesday night, then mostly cloudy with a (40%) chance of showers Wednesday highs 72-66 lows 46-50. (seasonal averages high 71 low 48)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with coastal showers tonight, increasing inland showers this evening with scattered showers late (0.10 in. of rain possible), AM coastal showers likely (70%) with showers in the afternoon, a god (50%) chance of inland AM showers and showers likely (60%) in the afternoon (0.10 in. of rain possible), showers Thursday night (0.25 in. of rain possible), coastal showers likely (70%) Friday, AM inland showers with a good (50%) chance of showers in the afternoon (under 0.10 in. of rain possible), a slight (20%) chance of showers Friday night, then mostly cloudy with a (30%) chance of showers Saturday and Saturday night lows near 47 highs near 58. Mostly cloudy with a (40%) chance of showers Sunday, partly cloudy with a (30%) chance of showers at night, mostly cloudy with a (40%) chance of showers Monday (Memorial Day), showers likely (70%) Monday night through Tuesday night, then mostly cloudy with a good (50%) chance of showers Wednesday highs 60-56 lows 47-52. (seasonal averages high 60 low 48)
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Forecast for the Cascades of Lane County: Mostly cloudy with rain and snow showers tonight (0.10 in. of rain possible, 2 in. of snow possible), rain and snow showers Thursday (0.10 in. of rain possible, 1 in. of snow possible), rain and snow showers at night (0.25 in. of rain possible, 2-4 in. of snow possible), rain and snow showers likely (70%) Friday, a (40%) chance of evening showers, a (30%) chance of showers late Friday night, a slight (20%) chance of AM showers, a mix of clouds and sun with a (40%) chance of showers Saturday afternoon, then mostly cloudy with a good (50%) chance of showers Saturday night snow level 4,000 ft. tonight and Thursday, 5,500 ft. Thursday night, 5,000 ft. Friday, 6,000 ft. Friday night and Saturday, then 7,000 ft. Saturday night lows 26-35 highs 40-53. Mostly cloudy with a good (50%) chance of showers Sunday, a (40%) chance of showers at night, a good (50%) chance of rain Monday (Memorial Day), mostly cloudy with rain likely (60%) at night through Tuesday night, then mostly cloudy with showers likely (60%) Wednesday snow level 7,000 ft. Sunday and Sunday night, 8,000 ft. Monday, above 8,000 ft. Monday night, 8,000 ft. Tuesday and Tuesday night, then 7,000 ft. Wednesday highs 50-55 cooling to 50 Wednesday lows 36-40 cooling to 36 Tuesday night.
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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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