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Tim Chuey Weather

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Here is my new weekly weather quiz question. When tornadoes strike they have very strong winds. It is not possible to actually measure the winds created by tornadoes, so Dr. T. Ted Fujita created a scale of wind speeds based on the damage caused by the tornado. As of 2007  his designations have been changed. For example a tornado was listed as an F4 and now might be designated as an EF4. What does the “E” stand for and what does it mean? 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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Summer officially began with the Summer Solstice yesterday. An upper level low (“U” shape on orange line) brought some moisture our way and produced a few showers.  Weak high pressure (little “Arch” shape on orange line on last graphic) will keep us dry through this evening. A frontal system will slide  through late today and an upper level low will move in behind the ridge both of which will return the slight chance of showers by late tonight and another frontal system will follow just as the Olympic Trials open and continue into the weekend and middle of next week. The weather isn’t the only thing that will be a challenge to the athletes. The pollen count will stay high enough to bother those athletes who are allergic. So far, 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 (59)
Trees-Low (6)
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: Partly cloudy this AM, mostly sunny and pleasant this afternoon, partly cloudy this evening, becoming mostly cloudy with a (40%) chance of showers late tonight, cloudy and cooler with rain likely (60%) Friday (0.20 in. of rain possible), cloudy with showers likely (60%) Friday night (0.24 in. of rain possible), showers likely (60%) Saturday (0.10 in. of rain possible), a good (50%) chance of showers Saturday night highs 78-62 lows 52-47. A mix of clouds and sun Sunday with a (40%) chance of AM showers, a slight (20%) chance of showers Sunday afternoon, mostly cloudy in the evening and partly cloudy with a slight (20%) chance of showers Sunday night, a mix of clouds and sun with a slight (20%) chance of showers Monday through Wednesday and partly cloudy with a slight (20%) chance of showers each night highs 67-70 lows 46-50. (seasonal averages high 75 low 48)

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Forecast for the Umpqua Basin including Roseburg: Partly cloudy this afternoon and this evening, mostly cloudy with a (40%) chance of showers late tonight (under 0.10 in. of rain possible), AM rain, showers Friday afternoon (0.25 in. of rain possible), showers with small hail in the evening, showers and cooler late Friday night (0.20 in. of rain possible), showers Saturday AM, showers likely (60%) Saturday afternoon with small hail possible (0.10 in. of rain possible), showers likely (60%) Saturday evening, then a slight (20%) chance of showers late Saturday night highs 79-62 warming to 68 Saturday lows 57-47. Mostly cloudy with a (30%) chance of showers Sunday through Monday, then mostly cloudy with a slight (20%) chance of showers Monday night through Wednesday highs 72-76 lows near 51. (seasonal averages high 77 low 53)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy today, mostly cloudy with a slight (20%) chance of coastal showers this evening, showers likely (60%) late tonight (under 0.10 in. of rain possible), rain Friday AM, showers in the afternoon (0.30 in. of rain possible), coastal showers likely (60%)  with a slight (20%) chance of thunderstorms in the evening with small hail possible and inland showers with small hail possible in the evening, showers likely 60%) late Friday night (0.20 in. of rain possible), mostly cloudy with AM showers, coastal showers likely (60%) with small hail in the afternoon (0.10 in. of rain possible) , a good (50%) chance of showers inland with small hail in the afternoon, showers Saturday afternoon, showers likely (60%) in the evening, then a good (50%) chance of showers late Saturday night highs 63-56 warming to 60 Saturday lows 53-47. Mostly cloudy with a (30%) chance of showers Sunday through Monday, then mostly cloudy with a (30%) chance of showers Monday night and Tuesday, then a slight (20%) chance of showers Wednesday highs 59-63 lows near 49. (seasonal averages high 62 low 51).

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Forecast for the Cascades of Lane County: Sunny this AM, partly cloudy with a slight (20%) chance of showers this afternoon, mostly cloudy with a slight (20%) chance of thunderstorms this evening, a (40%) chance of showers late tonight (under 0.10 in of rain possible), cloudy with a good (50%) chance of rain Friday AM, rain and cooler Friday afternoon (0.25 in. of rain possible), showers Friday night (0.20 in. of rain possible) and Saturday (0.15 in. of rain possible), mostly cloudy with showers likely (60%) in the evening, then a good (50%) chance of showers late Saturday night snow level above 8,000 ft. today through Friday, 8,000 ft. falling to 6,500 ft. Friday night, then 6,000 ft. Saturday and Saturday night highs 72-48 lows 43-38. A mix of clouds and sun with a (40%) chance of showers Sunday, mostly cloudy with a (30%) chance of showers Sunday night, a mix of clouds and sun with a (30%) chance of showers Monday and Monday night, a mix of clouds and sun Tuesday with a (30%) chance of AM showers, a slight (20%) chance of showers in the afternoon, mostly cloudy with a slight (20%) chance of showers Tuesday night, then a mix of clouds and sun with a slight (20%) chance of showers Wednesday snow level 6,000 ft. Sunday, 6,500 ft. Sunday night, 7,500 ft. Monday, 7,000 ft. Monday night, then rising to 8,000 ft. Tuesday through Wednesday highs 55-58 lows 39-42.

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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 Eugene Daily News.com

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