_______________
Check out my new Eugene Daily News column Weather or Not: TBA ASAP.
________________
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.
________________
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 Monday. 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 be just a slight chance of showers for the long Memorial Day Holiday weekend. A complex frontal system will be approaching the West Coast Tuesday.
________________
Advisories: A FREEZE WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING FOR THE KLAMATH BASIN.
________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with showers today (0.50 in. of rain possible), cloudy with showers tonight (0.10 in. of rain possible), a good (50%) chance of AM showers with a mix of clouds and sun Thursday, showers likely (60%) in the afternoon (0.10 in. of rain possible), showers Thursday night (0.15 in. of rain possible), mostly cloudy with a good (50%) chance of AM showers Friday, showers likely (70%) in the afternoon (0.10 in. of rain possible), then mostly cloudy with a (40%) chance of showers Friday night highs 52-64 lows 43-46. A mix of clouds and sun with a slight (20%) chance of showers Saturday, Sunday, and Monday (Memorial Day) while partly cloudy with a slight (20%) chance of showers each night, then cloudy with a good (50%) chance of rain Monday night and Tuesday highs 66-70 lows near 45. (seasonal averages high 68 low 44)
________________
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow showers this AM, showers this afternoon (snow level 2,500 ft. rising to 3,500 ft. in the afternoon, 0.25 in. of rain possible), showers likely (70%) tonight (0.10 in. of rain possible, snow level 3,500 ft. late), mostly cloudy with a good (50%) chance of showers Thursday (snow level 3,500 ft., 0.10 in. of rain possible), showers Thursday night (0.10 in. of rain possible) and Friday AM, then mostly cloudy with a slight (20%) chance of showers Friday night highs 56-66 lows 43-47. Partly cloudy with a (30%) chance of showers Saturday AM, mostly cloudy with a (40%) chance of showers in the afternoon and Saturday night, mostly cloudy with a slight (20%) chance of showers Sunday through Monday (Memorial Day), a (40%) chance of rain at night, then mostly cloudy with rain likely (60%) Tuesday highs 70-72 lows near 50. (seasonal averages high 71 low 48)
_________________
Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with showers today (0.25 in. of rain possible)and this evening, showers likely (60%) late tonight (0.30 in. of rain possible) and Thursday AM, showers Thursday afternoon (0.25 in. of rain possible), showers Thursday night (0.10 in. of rain possible) and Friday AM, showers likely (70%) in the afternoon, then mostly cloudy with a slight (20%) chance of showers Friday night highs 52-58 lows 46-50. Partly cloudy with a (40%) chance of showers Saturday and Saturday night, mostly cloudy with a slight (20%) chance of showers Sunday, partly cloudy with a slight (20%) chance of showers at night, mostly cloudy with a (30%) chance of showers Monday (Memorial Day), mostly cloudy with rain likely (70%) Monday night and Tuesday highs 57-62 lows 46-50. (seasonal averages high 60 low 48)
________________
Forecast for the Cascades of Lane County: Mostly cloudy and colder with rain and snow showers today and this evening (0.25 in. of rain possible, 2-4 in. of snow possible), rain and snow showers tonight (0.10 in. of rain possible, 2 in. of snow possible), rain and snow showers Thursday through Friday, then partly cloudy with a good (50%) chance of showers Friday night snow level 3,500 ft. today, 4,000 ft. tonight and Thursday, 5,500 ft. Thursday night, 5,000 ft. Friday, then 6,000 ft. Friday night highs 34-45 lows 27-33. A mix of clouds and sun with a (40%) chance of showers Saturday, mostly cloudy with a good (50%) chance of showers at night, a mix of clouds and sun with a good (50%) chance of showers Sunday, mostly cloudy with a (30%) chance of showers at night, a mix of clouds and sun with a (40%) chance of rain Monday (Memorial Day), mostly cloudy with a good (50%) chance of rain at night, then a mix of clouds and sun with a good (50%) chance of showers Tuesday snow level 6,000 ft. Saturday, 7,000 ft. at night and Sunday, 7,500 ft. Sunday night, 7,000 ft. Monday, then above 8,000 ft. Monday night, and Tuesday highs 53-55 lows near 37.
________________
**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.
________________
Get your local Eugene-Springfield news on-line at Eugene Daily News.com.
________________