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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.
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Advisories: A HIGH WIND WARNING IS IN EFFECT FROM 1 AM UNTIL 12 PM THURSDAY FOR THE NORTH AND CENTRAL OREGON COAST. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 PM THIS EVENING FOR COAST RANGE OF NORTHWEST OREGON AND THE UPPER HOOD RIVER VALLEY. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 5 AM THURSDAY FOR THE NORTH OREGON CASCADES, NOT INCLUDING THE CASCADES IN LANE COUNTY. A HIGH WIND WARNING IS IN EFFECT FROM 11 PM THIS EVENING UNTIL 5 PM THURSDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A HIGH WIND WARNING IS IN EFFECT FROM 5 AM THURSDAY UNTIL 5 AM FRIDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND FOR CENTRAL, EASTERN, AND WESTERN LAKE COUNTY
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A trough of low pressure (“U” shape on the jet stream) is sliding eastward, but has another trough moving in behind it. That trough will expand and slide around bringing a fetch of moisture with it. A frontal system is on its way through the Pacific Northwest bringing wind and rain to the coast and just rain for the rest of us. Another storm will move in Saturday. will make sure the weekend is wet too.
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Here are your detailed forecasts.**
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Cloudy with rain tonight (0.25 in. of rain possible), rain Thursday (0.50 in. of rain possible), mostly cloudy with showers Thursday night (0.10 in. of rain possible), showers (0.15 in. of rain possible) Friday, rain (0.15 in. of rain possible) likely (60%) Friday evening, showers (0.20 in. of rain possible) likely (60%) Friday night and Saturday, then cloudy with a good (50%) chance of showers Saturday night lows 43-34 highs 54-47. Cloudy with a good (50%) chance of showers Sunday, a (40%) chance of showers Sunday night, rain likely (60%) Monday through Tuesday, then showers likely (60%) Tuesday night and Wednesday highs 48-54 lows 34-38. (seasonal averages high 56 low 37)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain (0.20 in. of rain possible) and breezy (wind: S 15-25 mph and gusts to 40 mph Thursday) tonight and Thursday (0.60 in. of rain possible), rain in the evening, rain and snow showers late Thursday night (snow level 3,500 ft. falling to 2,500 ft. late at night, 0.20 in. of rain possible) rain and snow showers Friday AM, rain and snow showers (snow level 2,000 ft. rising to 2,500 ft. in the afternoon, 0.15 in. of rain possible) in the afternoon, rain in the evening, rain and snow likely (60%) Friday night (snow level 1,500 ft. late, 0.15 in. of rain possible), mostly cloudy with rain and snow showers likely (60%) Saturday and Saturday night lows 45-36 highs 57-50. Mostly cloudy with rain and snow showers likely (60%) Sunday, a good (50%) chance of rain and snow showers Sunday night, rain and snow showers likely (60%) Monday, rain and snow Monday night, AM rain and snow Tuesday, rain Tuesday afternoon, then rain likely (60%) Tuesday night and Wednesday highs 49-55 lows 33-36. (seasonal averages high 58 low 39)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with rain (0.60 in. of rain possible) tonight and very windy (wind: S 30-45 at the shore, S 20-30 mph inland), rain, possibly heavy at times, (1.00 in. of rain possible) Thursday and very windy (wind: S 35-50 mph shifting to SW 30-40 mph late afternoon at the shore, and S 20-25 mph gusts to 65 mph increasing to 70 mph then decreasing to 55 mph in the afternoon inland), evening showers, showers (0.30 in. of rain possible) likely (60%) late Thursday night and breezy (SW 15-25 mph), coastal showers Friday with AM showers inland and showers (0.40 in. of rain possible) likely (60%) in the afternoon (AM snow level 2,000 ft.), coastal rain with inland evening rain then rain and snow late Friday night (snow level 1,500 ft. late at night, 0.40 in. of rain possible), mostly cloudy with showers and possible thunderstorms Saturday and Saturday evening, then rain and snow showers likely (60%) late Saturday night lows 45-40 highs 48-37. AM rain and snow showers likely (60%) Sunday, showers likely (60%) Sunday afternoon, rain and snow showers likely (60%) Sunday night and Monday, rain likely (60%) Monday night, rain Tuesday, then rain likely (60%) Tuesday night and Wednesday highs near 49 lows 35-40. (seasonal averages high 54 low 42).
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Forecast for the Cascades of Lane County: Cloudy with rain (3-6 in. of snow possible, 0.50 in. of rain possible), increasing tonight, rain (0.75 in. of rain possible) and breezy (wind: SW 20-30 mph, SW 30-40 mph on exposed ridges and peaks) Thursday, showers (3-8 in. of snow possible, 0.50 in. of rain possible) Thursday night, showers Friday, rain or snow then showers late Friday night, then mostly cloudy with snow showers likely (60%) Saturday and Saturday night snow level 4,000 ft.rising to 6,000 ft. late tonight, 6,500 ft. Thursday, 5,500 ft. falling to 3,000 ft. Thursday night, 2,500 ft. Friday, 3,000 ft. Friday night, then at the surface Saturday and Saturday night lows 32-22 highs 42-32. Mostly cloudy with snow showers likely (60%) Sunday, a good (50%) chance of snow showers Sunday night, snow likely (60%) Monday and Monday night, rain or snow likely (60%) Tuesday, then showers likely (60%) Tuesday night and Wednesday snow level at the surface Sunday through Monday, 2,500 ft. Monday night, 3,500 ft. Tuesday and Tuesday night, then 2,500 ft. Wednesday, highs 30-39 lows 20-25.
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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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Get your local Eugene-Springfield news on-line at Eugene Daily News.com.
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