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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 a “halo?” Here is the correct answer. Sun dogs, halos, and rainbows are all due to the same basic physics: refraction of sunlight through moisture in the atmosphere. Refraction is the bending of light as it passes through a material, such as the lenses of your glasses. The difference between halos and rainbows is two-fold: the shape and the material that the light refracts through. To form a rainbow, light refracts through and reflects from a drop of water in the atmosphere which is approximately spherical. On the other hand, a halo forms from refraction through a hexagonal crystal of ice. The angle through which light refracts depends on the surface and material it refracts through, so the angle between the sun and the light phenomenon we see in the sky is different for rainbows and halos. I’ll have a new 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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This is Winter Weather Safety and Awareness Week and the National Weather Service Forecast Office in Portland website has tips for you to keep safe during the upcoming Winter season. Just go to: WINTER AWARENESS WEEK.

 

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Advisories:  NONE AT THIS TIME.

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Here is your College Football Forecast for this evening:

Beavers at Washington CenturyLink Field Seattle, Washington 7:15 PM – Mostly cloudy with rain decreasing a bit to rain at times by the end of the game, Temperature hovering near 54, Wind: S 10-20 mph.

 

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A high pressure ridge (shaded “Arch” shape) has now turned our airflow more from over the ocean (the term for that is flattening as it looses it’s hump), for more rain chances through the rest of the weekend because it is pumping subtropical moisture into the Pacific Northwest. A frontal system will move in and will continue the rain for the rest of the weekend into next week. An upper level trough of low pressure will take over early next week continuing the wet weather pattern. A parade of frontal systems will inhance this weather pattern for your workweek including Halloween. Prepare your Trick-or-Treaters for the wet weather.

 

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with rain tonight (0.50 in. of rain possible), rain Sunday (0.75 in. of rain possible), rain Sunday night (0.30 in. of rain possible), rain Monday  (0.40 in. of rain possible) and Monday night (0.25 in. of rain possible), then mostly cloudy with more rain Tuesday and Tuesday night lows 53-48 highs 65-60 warming to near 65 Tuesday. Mostly cloudy with occasional rain Wednesday, showers likely (60%) Wednesday night  (Halloween), mostly cloudy with a good (50%) chance of showers Thursday, a  Thursday night, mostly cloudy with a good (50%) chance of rain Friday, cloudy with a good (50%) chance of rain Friday night, then mostly cloudy with a good (50%) chance of rain Saturday highs 60-55 warming to 58 Saturday lows 47-44. (seasonal averages high 59 low 40)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain this evening, rain late tonight (0.10 in. of rain possible), cloudy with rain Sunday (0.15 in. of rain possible) and in the evening, then rain likely (60%) late Sunday night (0.10 in. of rain possible), rain likely (70%) Monday (0.10 in. of rain possible) and Monday night (0.10 in. of rain possible), then mostly cloudy with rain Tuesday and Tuesday night lows 55-50 highs 67-65. Mostly cloudy with rain Wednesday and Wednesday evening (Halloween), showers late at night, mostly cloudy with a (40%) chance of showers Thursday through Friday, cloudy with a good (50%) chance of showers Friday evening, a good (50%) chance of rain late at night, then rain likely (60%) again Saturday highs 60-55 warming to 59 Saturday lows 44-40. (seasonal averages high 61 low 43)

 

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with coastal rain tonight, rain likely (60%) inland this evening with rain late tonight  (0.30 in. of rain possible), coastal rain Sunday with AM rain inland then rain likely (60%) Sunday afternoon (0.40 in. of rain possible), coastal rain with rain likely (60%) inland Sunday night (0.30 in. of rain possible) and Monday (0.35 in. of rain possible), coastal rain Monday night (0.35 in. of rain possible), evening rain inland and rain likely (60%) late at night, then mostly cloudy with rain Tuesday and Tuesday night lows 55-52 highs near 62. Mostly cloudy with rain  Wednesday and Wednesday evening (Halloween), showers late Wednesday night, mostly cloudy with a good (50%) chance of showers Thursday through Friday, then mostly cloudy with rain likely (60%) Friday night and Saturday highs 59-56 lows 48-45. (seasonal averages high 59 low 45)

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Forecast for the Cascades of Lane County: Mostly cloudy with rain tonight (0.75 in. of rain possible), rain Sunday (1.00 in. of rain possible), occasional rain at night (0.75 in. of rain possible), rain Monday (in. of rain possible), mostly cloudy with rain likely (60%) Monday night and Tuesday, then rain Tuesday night snow level above 8,000 ft. tonight through Tuesday night lows 42-39 highs 52-49 warming to 54 Tuesday. Mostly cloudy with  occasional rain Wednesday, showers likely (70%) Wednesday night (Halloween), a good (50%) chance of showers Thursday,  mostly cloudy with a good (50%) chance of showers Thursday night, mostly cloudy with a good (50%) chance of rain Friday,  cloudy with a good (50%) chance of rain at night, then mostly cloudy with a good (50%) chance of rain Saturday snow level 7,500 ft. Wednesday, 6,500 ft. Wednesday night through Thursday night,  7,000 ft. Friday, 7,500 ft. Friday night, then 7,000 ft. Saturday highs 48-43 warming to near 52 Saturday lows 35-32 warming to 35 Friday 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.

 

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Get your local Eugene-Springfield news on-line at Eugene Daily News.com

 

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