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Here is my weekly weather quiz question for you this week. Why are clouds white? It’s actually pretty easy. Please post your answer as a comment by clicking on “no 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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The upper airflow shows a stronger high pressure ridge building over the Pacific Northwest. The ridge will protect us at least through the end of the week when the computer models indicate a wet weather pattern may begin as another frontal system moves in. Remember that, particularly this time of the year, when it’s not raining it is usually fogging.
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Advisories: AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 PM SATURDAY FOR ALL OF THE I-5 CORRIDOR FROM PORTLAND SOUTH THROUGH EUGENE AND SPRINGFIELD, CENTRAL DOUGLAS COUNTY, INCLUDING ROSEBURG, AND EASTERN CURRY COUNTY, JOSEPHINE COUNTY, JACKSON COUNTY, THE KLAMATH BASIN, AND CENTRAL AND EASTERN LAKE COUNTY.
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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: Patchy fog early this AM, a mix of clouds and sun this afternoon, cloudy with patchy fog again late tonight and Wednesday AM, a mix of clouds and sun Wednesday afternoon, then partly cloudy in the evening, mostly cloudy with patchy fog Wednesday night highs 54-48 lows 37-34. AM fog, a mix of clouds and sun Thursday, mostly cloudy with patchy fog again Thursday night, mostly cloudy with a slight (20%) chance of rain Friday and Friday night,then mostly cloudy with a (40%) chance of rain Saturday through Monday highs 58-49 lows near 37 falling to 28 Sunday night. (seasonal averages highs 47 low 33)
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Forecast for the Umpqua Basin including, Roseburg: Partly cloudy with patchy fog early this AM, mostly sunny this afternoon, partly cloudy this evening, then mostly clear with patchy fog tonight and Wednesday AM, sunny Wednesday afternoon, clear in the evening, partly cloudy with patchy fog late night and early Thursday AM, partly cloudy Thursday afternoon and night with patchy fog late high 55-58 lows 36-39. Patchy AM fog Friday, partly cloudy in the afternoon with a slight chance of rain, a slight (20%) chance of showers Friday night, mostly cloudy with a (40%) chance of rain Saturday through Sunday night, then partly cloudy with a slight (20%) chance of showers Monday highs 54-50 lows 40-35-35. (seasonal averages high 51 low 35)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy fog early this AM, mostly sunny this afternoon, mostly clear at night, mostly sunny in the AM, partly cloudy Wednesday afternoon and Wednesday night highs 56-63 lows near 40. Partly cloudy Thursday and Thursday night, mostly sunny Thursday afternoon, partly cloudy Friday with a slight (20%) chance of rain, mostly cloudy with a slight (20%) chance of rain Friday night, mostly cloudy with a (40%) chance of rain Saturday and Saturday night, mostly cloudy Sunday and Sunday night with a (40%) chance of showers, then partly cloudy with a (40%) chance of showers Monday highs 57-49 lows near 40. (seasonal averages high 53 low 40).
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Forecast for the Cascades of Lane County: A mix of clouds and sun today, and mostly clear tonight, mostly sunny Wednesday, and mostly clear Wednesday night free air freezing level 7,500 ft. rising to 8,000 ft. today, 9,000 ft. tonight, and 11,000 ft. Wednesday and Wednesday night highs 50-47 lows 30-33. Mostly sunny Thursday, partly cloudy at night,mostly cloudy with a slight (20%) chance of rain Friday and Friday night and (40%) chance of rain Saturday, partly cloudy with a (40%) chance of rain and snow Saturday night through Sunday night, mostly cloudy with a (30%) chance of rain Monday free air freezing level 11,000 ft. Thursday and 10,000 ft. Thursday night, 6,500 ft. Friday, snow level 5,500 ft. Friday night, then 5,000 ft. Saturday, 4,500 ft. Saturday night, 3,500 ft. Sunday, and 4,000 ft. Sunday night and 4,500 ft. Monday highs 50-39 lows 30-23 warming to 28 Sunday night.
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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.