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Here is my weekly weather quiz question. What is “orographic lifting.” 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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Another upper level trough of low pressure (shaded “U” shape) is moving toward us as that weak high pressure ridge pulls away. A new frontal system along with that trough of has brought back more wet weather. Yet another weak frontal system will approach the Pacific Northwest for the weekend and try to produce more showers.
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Advisories: A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM WEDNESDAY FOR THE WESTERN COLUMBIA GORGE AND THE UPPER HOOD RIVER VALLEY. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 PM WEDNESDAY ABOVE 2,000 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 PM WEDNESDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON CASCADES AND THE SISKIYOU MOUNTAINS. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 7 PM THIS EVENING FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
A FLOOD WARNING CONTINUES FOR THE COQUILLE RIVER AT COQUILLE. MINOR FLOODING IS OCCURRING AS WAS EXPECTED. FOR MORE DETAILS GO TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE AT PORTLAND FLOOD WARNING PAGE.
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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 Wednesday (0.25 in. of rain possible), showers likely (70%) Wednesday night (0.25 in. of rain possible), mostly cloudy with a (30%) chance of AM showers, a slight (20%) chance of showers (under 0.10 in. of rain possible) Thursday afternoon and evening, mostly cloudy with patchy fog late Thursday night, patchy AM fog, then mostly cloudy Friday and Friday night highs 45-40 lows 36-32 . Mostly cloudy Saturday and Saturday night, a mix of clouds and sun Sunday and Monday with mostly cloudy skies Sunday night and Monday night, then a mix of clouds and sun with a slight (20%) chance of rain Tuesday (New Year’s Day) highs 40-43 lows near 33. (seasonal averages high 45 low 33)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with evening rain, rain and snow showers late (0.15 in. of rain possible, 1 in. of snow possible, snow level 2,500 ft. falling to 2,000 ft. late) tonight, rain and snow showers Wednesday (0.25 in. of rain possible, 2-3 in. of snow possible, snow level 2,000 ft.), rain and snow showers in the evening, rain and snow showers likely (70%) late Wednesday night (0.15 in. of rain possible, 1-2 in. of snow possible, snow level 2,000 ft. falling to 1,500 ft. late), mostly cloudy with a (40%) chance of rain and snow showers Thursday (snow level 2,000 ft.), mostly cloudy with areas of fog Thursday night, mostly cloudy with a slight (20%) chance of rain and snow showers Friday and Friday night highs near 46 lows 38-32 . Mostly cloudy Saturday, mostly cloudy with a slight (20%) chance of showers Saturday night, partly cloudy with a slight (20%) chance of showers Sunday, partly cloudy at night, mostly cloudy Monday, partly cloudy at night, then partly cloudy with a slight (20%) chance of showers Tuesday (New Year’s Day) highs 43-46 lows 32-35. (seasonal averages high 48 low 36)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with rain and a slight (20%) chance of thunderstorms at the shore this evening with showers and a slight (20%) chance of thunderstorms late while evening rain inland and showers (0.30 in. of rain possible) late tonight, showers Wednesday with a slight (20%) chance of AM coastal thunderstorms (0.40 in. of rain possible), coastal showers Wednesday night (0.15 in. of rain possible) with evening showers then showers likely (60%) inland late (snow level 2,000 ft.), mostly cloudy with a (30%) chance of showers Thursday (snow level 2,000 ft.), mostly cloudy with patchy fog late Thursday night, cloudy with a (30%) chance of showers Friday and Friday night highs near 48 lows 42-36. Mostly cloudy with a slight (20%) chance of showers Saturday and Saturday night, Sunday, partly cloudy with a slight (20%) chance of shower Sunday, mostly cloudy Sunday night through Monday night, then mostly cloudy with a slight (20%) chance of showers Tuesday (New Year’s Day) highs 48-52 lows 36-38. (seasonal averages high 51 low 40)
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Forecast for the Cascades of Lane County: Mostly cloudy with rain and snow showers tonight (0.25 in. of rain possible, 1-4 in. of snow possible), mostly cloudy with snow showers Wednesday (0.30 in. of rain possible, 2-5 in. of snow possible), snow showers Wednesday night (0.15 in. of rain possible, 3-7 in. of snow possible), a slight (20%) chance snow showers Thursday evening, mostly cloudy Thursday night through Friday night snow level 3,000 ft. tonight, at the surface Wednesday through Thursday night, then just mostly cloudy Friday and Friday night highs near 30 lows 24-20 warming to 23 Friday night. Mostly cloudy with a slight (20%) chance of snow showers Saturday and Saturday night, a mix of clouds and sun Sunday, mostly cloudy Sunday night through Monday night, then mostly cloudy with a slight (20%) chance of rain and snow Tuesday (New Year’s Day) free snow level at the surface Saturday and Saturday night, free air freezing level 3,500 ft. Sunday, 4,500 ft. Sunday night, 4,000 ft. Monday and Monday night, then 3,500 ft. Tuesday highs near 30 lows near 23.
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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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