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Here is my weekly weather quiz question. What is the “Pacific Decadal Oscillation?” 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) has moved into Oregon as cold high pressure (shaded “Arch shape”) moves toward the Pacific Northwest. The next frontal system can be seen as it moved through on Wednesday. High pressure at the surface (blue”H” offshore) and aloft will take over next week bringing sunshine and dry weather.
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Advisories: A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM FRIDAY ABOVE 1,000 FT. FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 8 AM FRIDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 8 AM FRIDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM FRIDAY ABOVE 1,000 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY JACKSON COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with (40%) chance of rain and snow showers tonight with patchy fog late (under 0.10 in. of rain possible), mostly cloudy with AM fog a slight (20%) chance of rain and snow showers, partly cloudy Friday afternoon, partly cloudy in the evening, mostly cloudy with patchy fog late Friday night and Saturday AM, mostly cloudy with a slight (20%) chance of rain and snow showers Saturday afternoon, a (30%) chance of rain and snow showers in the evening, a slight (20%) chance of rain and snow showers Saturday night, patchy AM fog, a mix of clouds and sun Sunday, then partly cloudy at night lows 32-25 highs 40-38. Patchy AM fog and mostly cloudy Monday AM, partly cloudy in the afternoon and Monday night, patchy AM fog and partly cloudy Tuesday through Wednesday, then just partly cloudy Wednesday night and Thursday highs 43-48 lows 30-35. (seasonal averages high 46 low 34)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow showers likely (60%) tonight (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 500 ft.), rain and snow showers likely (60%) Friday AM, a good (50%) chance of rain and snow showers in the afternoon (under .10 in. of rain possible, 1 in. of snow possible, snow level 400 ft. rising to 1,500 ft. in the afternoon), mostly cloudy with a slight (20%) chance of rain and snow showers Friday night (under 0.10 in. of rain possible, evening snow level 2,000 ft), mostly cloudy with a slight (20%) chance of AM rain, a slight (20%) chance of rain and snow Saturday afternoon (snow level 2,000 ft.), a (30%) chance of rain and snow Saturday night mostly cloudy with patchy AM fog, then partly cloudy in the afternoon and Sunday night lows 32-26 highs 40-44. Mostly cloudy with patchy AM fog and freezing fog Monday, partly cloudy in the afternoon and Monday night, patchy AM fog and freezing fog, partly cloudy Tuesday afternoon and night, areas of AM fog, sunny Wednesday afternoon, mostly clear at night, then just partly cloudy Thursday highs 45-52 lows 30-35. (seasonal averages high 49 low 36)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with coastal showers likely (60%) while inland rain and snow showers likely (70%) this evening and rain and snow showers late tonight (0.10 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft.) and breezy (wind: NW 15-25 mph at the shore and NW 10-20 mph inland), AM coastal showers likely (60%) and a good (50%) chance of rain and snow showers Friday afternoon while AM rain and snow showers likely (70%) inland with a good (50%) chance of rain and snow showers in the afternoon (0.10 in. of rain possible, 1 in. of snow possible, snow level 900 ft. rising to 1,500 ft.), mostly cloudy with a (40%) chance of coastal showers in the evening and a (%) chance of rain late Friday night while a slight (20%) chance of evening showers inland and a slight (20%) chance of rain and snow late Friday night (snow level 2,000 ft. falling to 1,500 ft. late) , a (30%) chance of rain Saturday (AM snow level 2,000 ft.), a good (50%) chance of coastal rain and a (40%) chance of rain and snow inland Saturday night, mostly cloudy Sunday, then partly cloudy Sunday night lows 37-32 warming to 36 Sunday night highs near 47. Partly cloudy Monday through Thursday highs 48-53 lows near 37-40. (seasonal averages high 51 low 40)
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Forecast for the Cascades of Lane County: Cloudy with a (40%) chance of snow showers tonight and Friday AM, a mix of clouds and sun with a slight (20%) chance of snow showers in the afternoon, partly cloudy with a slight (20%) chance of evening snow showers, mostly cloudy Friday night, mostly cloudy with a slight (20%) chance of snow Saturday afternoon, a (30%) chance of snow Saturday evening, a slight (20%) chance of snow showers at night, a mix of clouds and sun Sunday, then partly cloudy Sunday night snow level at the surface tonight through Saturday night, free air freezing level at the surface Sunday and Sunday night lows near 16 highs 22-30. Partly cloudy Monday and Monday night, mostly sunny Tuesday Wednesday, and Thursday with mostly clear skies each night free air freezing level 3,500 ft. Monday, 6,500 ft. Monday night, 8,000 ft. Tuesday, then 10,000 ft. Tuesday night through Thursday highs 33-45 cooling to 42 Thursday lows 23-27.
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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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