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Tim Chuey Weather

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Here is my weekly weather quiz question. What is an “occluded front?” 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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This week is “Lightning Safety Awareness Week” and the National Weather Service has a special web page just full of things you should know about lightning.

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An upper level low (“U” shape on brown line) has moved eastward away from us. It was followed by high pressure that cleared us out and warmed us up. Another upper level low (“U” shape on brown line) has set up along the Pacific Coast returning the slight chance of showers through tonight and increasing the chance for Saturday. A frontal system is poised to enhance the chance of showers as it moves closer, but it won’t move in until Saturday when the chance for showers increases. The pollen count will stay high enough, with showers stopping and starting, to bother those athletes who are allergic when it is dry. At least we don’t have smoke from wildfires or grass field burning as we did during the previous Olympic Trials held here.
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The pollen count for the Eugene-Springfield area is:
Grass- High (115)
Trees- Low (14)
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 a slight (20%) chance of rain this AM, mostly cloudy this afternoon, a slight (20%) chance of rain tonight, mostly cloudy with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Saturday afternoon and evening (0.15 in. of rain possible), a good (50%) chance of showers late Saturday night (0.10 in. of rain possible), mostly cloudy with a good (50%) chance of showers Sunday AM, a slight (20%) chance of showers in the afternoon, then partly cloudy with a slight (20%) chance of showers Sunday evening and partly cloudy Sunday night highs 75-70 warming 75 Sunday lows 57-50.  Partly cloudy & pleasant Monday through Wednesday (July 4th) and continuing through Thursday highs 76-73 warming to 76 by Thursday lows near 50. (seasonal averages high 77 low 50)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with isolated showers today, a slight (20%) chance of showers tonight, mostly cloudy with a slight (20%) chance of showers Saturday AM, showers likely (60%) Saturday with a slight (20%) chance of thunderstorms Saturday afternoon and evening, a good (50%) chance of showers Saturday night (under 0.10 in. of rain possible), mostly cloudy with a (40%) chance of showers Sunday, then partly cloudy Sunday night highs 83-73 lows 62-54. Partly cloudy Monday through Tuesday night, sunny and warmer Wednesday (July 4th), then partly cloudy Wednesday night and Thursday highs 82-73 warming to 80 Thursday lows 56-50. (seasonal averages high 80 low 54)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a (30%) chance of scattered showers this AM, a  (30%) chance of isolated showers this afternoon, a (40%) chance of showers tonight (under 0.10 in. of rain possible), cloudy with a good (50%) chance of showers Saturday AM, coastal showers likely (60%) in the afternoon with inland showers also in the afternoon, (0.10 in. of rain possible), showers likely (60%) in the evening, a good (50%) chance of showers Saturday night (0.10 in. of rain possible), mostly cloudy with a (40%) chance of showers Sunday, then just partly cloudy Sunday night highs 66-60 lows 56-50. Partly cloudy Monday through Wednesday (July 4th), then partly cloudy Wednesday night and Thursday highs near 64 lows 52-50. (seasonal averages high 63 low 52).

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Forecast for the Cascades of Lane County: A mix of clouds and sun with a slight (20%) chance of rain this afternoon, mostly cloudy with a slight (20%) chance of rain tonight, mostly cloudy with a (40%) chance of rain Saturday AM, showers likely (60%) with a slight (20%) chance of thunderstorms in the afternoon and evening, then showers likely (60%) late Saturday night, mostly cloudy with a good (50%) chance of showers Sunday, then partly cloudy with a slight (20%) chance of showers Sunday evening snow level above 8,000 ft. today through Sunday night highs 65-60 lows 47-42 warming to near 45 Sunday night. Partly cloudy Monday and Monday night, mostly sunny Tuesday AM, partly cloudy Tuesday afternoon through Wednesday afternoon (July 4th), partly cloudy with a  slight (20%) chance of showers late Wednesday night, then just partly cloudy Thursday free air freezing level 11,000 ft. rising to 14,000 ft. Monday afternoon through Tuesday, 14,000 ft. falling to 11,000 ft. late Tuesday night, 11,000 ft. rising to 12,000 ft. Wednesday afternoon and evening, snow level above 8,000 ft. late Wednesday night, then free air freezing level 11,000 ft. Thursday  highs 66-62 warming to near 67 Thursday lows 40-43.

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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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