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Tim Chuey Weather
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Sorry, no winner this week. Here is my weekly weather quiz question for the last time. What is the “free air freezing level” we refer to in the Cascades weather forecasts? Please define what it is. Here is the answer. The free air freezing level is referring to the height at which the temperature of the atmosphere drops to 0 deg C.  The  “free air” freezing level is meant to distinguish in complex terrain such as mountains between subfreezing air which can settle in low areas such as valleys due to temperature inversions and the actual freezing level which is aloft in the atmosphere. I’ll have another weekly weather quiz question for you starting Monday. 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.

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Advisories: NONE AT THIS TIME.

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closed low (brown circle) is migrating north and east away from us. A weak cold front will slide though today bringing just a few clouds and slightly cooler temperatures. Clearing skies and warmer temperatures return Monday as another upper level low stays farther north this time moving through southern Canada and Washington so, at least the way it looks now, we will still stay dry.
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The pollen count for the Eugene-Springfield area is:
Grass- Moderate (8)  (Observation: It looks like the grass pollen season is just about over,                                               since grass is just barely in the moderate category, by 1.)
Trees- Low (7)
Data from Oregon Allergy Associates www.oregonallergyassociates.com.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy this AM, a mix of clouds and sun and warmer this afternoon, mostly clear tonight, cloudy Sunday AM, partly cloudy  and a bit cooler Sunday afternoon, mostly clear Sunday night, mostly sunny and warmer Monday, then partly cloudy Monday night highs 82-74 warming to near 80 Monday lows near 52. Mostly sunny Tuesday through Friday with mostly clear nights highs 82-84 lows 54-52. (seasonal averages high 84 low 52)

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Forecast for the Umpqua Basin including Roseburg: Sunny today, clear this evening, partly cloudy tonight, mostly cloudy Sunday AM, then sunny Sunday afternoon, then mostly clear Sunday night highs 83-78 warming to 82 Monday lows 56-53. Mostly sunny Monday, mostly clear at night, then mostly sunny Tuesday through Thursday with mostly clear nights highs 85-82 lows near 57. (seasonal averages high 86 low 57)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy this AM, becoming mostly sunny this afternoon, clear in the evening, mostly cloudy tonight, and Sunday AM with patchy AM drizzle, sunny in the afternoon, mostly clear Sunday evening, then partly cloudy at night and Monday AM, sunny Monday, then mostly clear Monday night highs near 65 lows near 53. Mostly sunny Tuesday, mostly clear Tuesday night, then partly cloudy Wednesday through Friday highs 64 lows 55. (seasonal averages high 65 low 53).

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Forecast for the Cascades of Lane County:  Sunny and a bit warmer today, mostly clear tonight, partly cloudy Sunday AM, mostly sunny and cooler Sunday afternoon and cooler Monday with clear nights free air freezing level 14,000 ft. today through Sunday night, then 15,000 ft. Monday and Monday night lows 48-42 warming to 45 Monday night highs 72-66. Mostly sunny Tuesday through Friday with mostly clear nights free air freezing level 13,000 ft. Tuesday and Tuesday night, then 14,000 ft. Wednesday through Friday highs near 72 lows near 46.

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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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