________________
Here is my new weekly weather quiz question for this week. The Willamette Valley can see some pretty hot temperatures during the summer months, but the diurnal variation of temperatures is what makes it not as uncomfortable as it can get elsewhere. Explain what “diurnal” means and why does it make us more comfortable? 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.
________________
Advisories: A HIGH WIND WARNING IS IN EFFECT FROM 3 AM UNTIL 5 PM WEDNESDAY FOR THE NORTH AND CENTRAL OREGON COAST. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 3 AM UNTIL NOON WEDNESDAY FOR COAST RANGE OF NORTHWEST OREGON. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 6 AM UNTIL 5 PM WEDNESDAY FOR THE NORTH OREGON CASCADE FOOTHILLS AND THE NORTH OREGON CASCADES.
________________
A trough of low pressure (“U” shape on the jet stream) helped push a frontal system through Oregon for your Tuesday dropping about 4 inches of snow on Florence and about 6 inches of snow at North Bend. We’ll have a break in the weather Wednesday with a new storm coming in Thursday. Another frontal system (position shown for Friday) will make sure the weekend is wet too.
_________________
Here are your detailed forecasts.**
________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Cloudy with AM (40%) chance of showers, rain tonight (0.10 in. of rain possible), rain Wednesday (0.25 in. of rain possible), rain Wednesday night (0.25 in. of rain possible) and Thursday (0.50 in. of rain possible), showers (0.25 in. of rain possible) Thursday night, rain likely (60%) Friday, then showers likely (60%) Friday lows 34-43 cooling to near 36 Friday night highs 50-55 cooling to near 50 Friday. Mostly cloudy with a good (50%) chance of showers Saturday, cloudy with a good (50% chance of showers Saturday night through Sunday night, then mostly with a good (50%) chance of showers Monday through Tuesday highs 48-54 lows near 34. (seasonal averages high 56 low 37)
_______________
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a slight (20%) chance of rain and snow showers tonight, cloudy with a (40%) chance of rain and snow Wednesday AM, rain likely (60%) Wednesday afternoon (snow level 1,500 ft. rising to 3,000 ft. in the afternoon, under 0.10 in. of rain possible) and breezy (wind: S 15-25 mph), mostly cloudy with rain likely (60% in the evening, rain Wednesday night (under 0.10 in. of rain possible) through Thursday (0.45 in. of rain possible) evening, showers likely (60%) late Thursday night (0.10 in. of rain possible), rain Friday, cloudy with a good (50%) chance of rain and snow showers Friday in the evening, then rain and snow showers likely (60%) Friday night lows 35-45 cooling to near 38 Friday night highs 54-58 cooling to near 53 Friday. Mostly cloudy with rain and snow showers likely (60%) Saturday through Monday, a (40%) chance of rain and snow showers Monday night and Tuesday highs 48-53 lows near 35. (seasonal averages high 58 low 39)
________________
Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a (30%) chance of coastal showers and a slight (20%) of rain and snow showers (snow level 1,500 ft.) inland tonight (under 0.10 in. of rain possible), AM rain (snow level 2,000 ft.) likely (60%), rain Wednesday (0.15 in. of rain possible) and Wednesday night (0.15 in. of rain possible), rain (0.75 in. of rain possible) and windy (wind: S 25-35 mph at the shore and S 20-25 mph inland) Thursday, evening showers, showers (0.30 in. of rain possible) likely (60%) Thursday night, rain Friday, showers likely (60%) in the evening, then rain and snow showers and windy Friday night lows 38-45 cooling to near 40 Friday night highs 50-48. Mostly cloudy with showers Saturday, showers likely (60%) Saturday night, rain and snow showers likely Sunday, a good (50%) chance of showers Sunday night, mostly cloudy with a good (50%) chance of rain and snow showers Monday, then mostly cloudy with a good (50%) chance of showers Monday night and Tuesday highs 47-50 lows 35-35. (seasonal averages high 54 low 42).
_________________
Forecast for the Cascades of Lane County: Cloudy with a good (50%) chance of snow showers this evening, cloudy with a (40%) chance of snow late tonight, cloudy with a chance of rain or snow Wednesday AM, rain or snow likely in the afternoon (2-5 in. of snow possible, 0.25 in. of rain possible), rain or snow Wednesday night (2 in. of snow possible, 0.10 in. of rain possible), AM rain Thursday ( in. of rain possible) and breezy (wind: S 15-25 mph gusts to 35 mph late), showers and breezy (wind: SW 15-25 mph decreasing to SW 5-15 mph late at night) Thursday night, rain or snow Friday, then snow showers likely (60%) Friday night snow level 2,5,00 ft. tonight, 2,500 ft. rising to 4,000 ft. Wednesday, 5,000 ft. Wednesday night, 6,500 ft. Thursday, 4,500 ft Thursday night, 4,000 ft. Friday, then 2,500 ft. Friday night lows 22-30 cooling to near 24 Friday night highs 35-40 cooling to near 35 Friday. Mostly cloudy with snow showers Saturday through Sunday night, then mostly cloudy with a good (50%) chance of snow showers Monday through Tuesday snow level at the surface Saturday through Monday, then 2,500 ft. Monday night and Tuesday highs 32-39 lows near 20.
________________
**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.
________________