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Here is my weather weather quiz question for this week.  You have probably heard the term “fronts” used to explain the boundaries between cold and warm air masses. Who first coined that term?  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: NONE AT THIS TIME.

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A  high pressure ridge (“Arch” shape) is bringing back the sunny and warmer weather. An upper level trough of low pressure “U” shape) will build in from the Northwest toward the end of the week. A  cold front will approach the Pacific Northwest late Wednesday into Thursday (position shown is Thursday) bringing temperatures that are a bit cooler.

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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: Sunny and warmer again today, mostly clear in the evening, becoming partly cloudy Wednesday AM, mostly sunny and still warm Wednesday, partly cloudy Wednesday night through Thursday evening, then mostly cloudy Thursday night highs 86-76 lows near 50. Mostly cloudy Friday AM, partly cloudy Friday afternoon and Friday night, then back to mostly sunny days and mostly clear nights Saturday through Monday highs near 77 lows near 50. (seasonal averages high 79 low 50)

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The Pollen forecast for the Eugene/Springfield Area is for  trees to be absent, weeds to be low, and Grass to be high. (Provided by Allergy and Asthma Research Group)

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Forecast for the Umpqua Basin including Roseburg:  Sunny and warmer today, mostly clear tonight, partly cloudy in the AM, mostly sunny and warmer Wednesday afternoon, mostly clear in the evening, then partly cloudy Wednesday night through Thursday night highs 87-90 cooling to near 80 Thursday lows 56-52. Partly cloudy Friday, mostly clear Friday night, mostly sunny days and mostly clear nights Saturday through Sunday night, then sunny Monday highs 80-84 lows near 52. (seasonal averages high 84 low 54)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:  Sunny today, becoming mostly clear this evening, mostly cloudy at night with patchy coastal fog late night and early Wednesday AM breaking out to partly cloudy in the afternoon and evening, then mostly cloudy Wednesday night with patchy coastal fog again late at night, patchy fog with a slight chance of drizzle Thursday AM, mostly sunny in the afternoon, then partly cloudy with patchy fog Thursday night highs 68-63 lows 55-50. Partly cloudy with patchy early AM and late night  fog Friday through Saturday, mostly clear Saturday night with mostly sunny Sunday, then partly cloudy Sunday night and Monday highs 63-67 lows near 50. (seasonal averages high 66 low 52).

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Forecast for the Cascades of Lane County: Sunny today, clear tonight, mostly sunny Wednesday, mostly clear Wednesday night, partly cloudy Thursday, mostly cloudy in the evening, partly Thursday night with a slight (20%) chance of showers free air freezing level 15,000 ft. today through Wednesday, falling to 13,000 ft. Wednesday night and Thursday, then a snow level above 13,000 ft. Thursday night highs 76-66 lows 52-42. Partly cloudy Friday AM breaking out to mostly sunny in the afternoon, mostly clear Friday night, then mostly sunny days and mostly clear nights Saturday through Monday free air freezing level 13,000 ft. Friday and Friday night, rising to 14,000 ft. Saturday and Saturday night, then 13,000 ft. Sunday through through Monday highs near 68 lows near 42.

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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 EugeneDailyNews.com.

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