________________
Sorry, but no winner this week. There were some chuckles out there about this one, but nobody answered it. Here is my weekly weather quiz question for the last time. Please define the term “backdoor cold front.” Here is the correct answer. A Back Door Cold Front is defined as a cold front moving south or southwest along the Atlantic seaboard and Great Lakes; these are especially common during the spring months. Here in the Pacific Northwest it is a cold front that drops down at us from the northeast or north, usually in the winter, spreading much colder air down at us from that unusual angle. I’ll have a new weekly weather quiz question for you starting Monday. 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.
________________
An upper level low (Shaded “U” shape, more like a donut), called a closed low because it is cut off from the upper air circulation, has taken over bringing rain and dropping temperatures drastically. This unsettled weather will continue for the rest of the week as the low rotates away from us. It looks like there will still be a 50/50 chance of showers for the Memorial Day Holiday itself with temperatures near seasonal normal, so plan accordingly. It will feel the coldest near or on the water, sorry about that. A frontal system will be approaching the West Coast Wednesday. An upper level trough of low pressure (Shaded “U” shape dropping down through Southern California) will keep us in clouds with a chance of precipitation for the next 7 days.
________________
Advisories: NONE AT THIS TIME.
________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with a slight (20%) chance of rain this AM, a good (50%) chance of rain this afternoon (under 0.10 in. of rain possible), rain likely (60%) tonight (0.25 in. of rain possible), showers likely (60%) Sunday (0.15 in. of rain possible), mostly cloudy with a (40%) chance of showers Sunday night (0.10 in. of rain possible), cloudy with a good (50%) chance of rain Monday AM, then rain in the afternoon (Memorial Day), then showers Monday night highs 66-60 lows 46-50. Mostly cloudy with showers likely (70%) Tuesday, a good (50%) chance of showers at night, showers likely (60%) Wednesday, a good (50%) chance of showers at night and Thursday, then mostly cloudy with a slight (20%) chance of showers Thursday night and Friday highs 64-67 lows 47-43. (seasonal averages high 69 low 45)
________________
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a slight (20%) chance of AM showers, showers likely (70%) this afternoon (under 0.10 in. of rain possible) and tonight (under 0.10 in. of rain possible), mostly cloudy with a (40%) chance of showers Sunday (0.10 in. of rain possible) and Sunday evening, showers likely (60%) late Sunday night (under 0.10 in. of rain possible) and Monday AM, rain in the afternoon (Memorial Day), then showers likely (70%) Monday night highs 69-62 lows 53-50. Mostly cloudy with a good (50%) chance of showers Tuesday, evening showers likely (60%), a good (50%) chance of showers late Tuesday night, showers likely (60%) Wednesday, a good (50%) chance of showers Wednesday night, mostly cloudy with a (40%) chance of showers Thursday, partly cloudy with a slight (20%) chance of showers at night, then mostly cloudy with a slight (20%) chance of showers Friday highs 65-70 lows 50-47. (seasonal averages high 72 low 49)
_________________
Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a slight (20%) chance of showers this AM, showers likely (60%) this afternoon (under 0.10 in. of rain possible), showers likely (70%) tonight, (0.15 in. of rain possible), mostly cloudy with a (40%) chance of showers Sunday (0.10 in. of rain possible), a good (50%) chance of evening showers, showers likely (70%) late Sunday night (0.10 in. of rain possible), AM rain likely (60%), rain Monday (Memorial Day) and breezy, then showers likely (70%) Monday night highs near 60 lows near 52. Mostly cloudy with a good (50%) chance of showers Tuesday, showers likely (60%) in the evening, a good (50%) chance of showers late Tuesday night, showers likely (60%) Wednesday, mostly cloudy with a good (50%) chance of showers Wednesday night and Thursday, then a slight (20%) chance of showers Thursday night and Friday highs 62-57 warming to near 60 Friday lows 50-48. (seasonal averages high 60 low 48)
________________
Forecast for the Cascades of Lane County: Mostly cloudy and warmer with a good (50%) chance of rain this afternoon (under 0.10 in. of rain possible), rain likely (60%) tonight (0.25 in. of rain possible), showers likely (60%) Sunday, a good (50%) chance of evening showers, a slight (20%) chance of showers Sunday night (0.10 in. of rain possible), cloudy with a good (50%) chance of AM rain, rain Monday afternoon (Memorial Day), then showers again Monday night snow level 6,000 ft. today, 7,500 ft. tonight, 6,500 ft. Sunday and Sunday night, 7,000 ft. Monday, then 7,500 ft. Monday night highs 52-48 warming to near 50 Monday lows 37-40 cooling to 36 Monday night. Mostly cloudy with showers likely (60%) Tuesday, cloudy with a good (50%) chance of showers Tuesday night, showers likely (70%) Wednesday, cloudy with a good (50%) chance of showers at night, rain and snow showers likely (60%) Thursday, then mostly cloudy with a slight (20%) chance of showers Thursday night and Friday snow level 6,500 ft. Tuesday, 7,000 ft. Tuesday night, 6,500 ft. Wednesday, 6,000 ft. at night, 5,000 ft. Thursday, 6,000 ft. at night, then 6,500 ft. Friday highs 50-53 lows 37-32 warming to near 35 Thursday night.
________________
**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.
________________