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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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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Clear this evening, partly cloudy tonight, partly cloudy Thursday, partly cloudy with a slight (20%) chance of showers late Thursday night, cloudy and cooler with rain Friday AM, rain likely (60%) Friday afternoon (0.15 in. of rain possible), cloudy with a good (50%) chance of rain Friday evening, showers likely (60%) Friday night (0.10 in. of rain possible) and Saturday AM, a good (50%) chance of showers in the afternoon, mostly cloudy in the evening, partly cloudy with a good (50%) chance of showers Saturday night lows 48-52 cooling to near 47 Saturday night highs 78-62. A mix of clouds and sun with a (40%) chance of showers Sunday AM, a mix of clouds and sun with a slight (20%) chance of showers Sunday afternoon, 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 74 low 48)
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Forecast for the Umpqua Basin including Roseburg: Clear tonight, partly cloudy Thursday and Thursday evening, mostly cloudy with a (40%) chance of showers late Thursday night (under 0.10 in. of rain possible), showers Friday (0.20 in. of rain possible), showers likely (60%) and cooler Friday night (0.20 in. of rain possible), showers Saturday AM, showers, Saturday afternoon and evening, then a good (50%) chance of showers late Saturday night lows 52-56 cooling to near 44 Saturday night highs 79-62 warming to 68 Saturday. 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 clear this evening, partly cloudy tonight, mostly cloudy Thursday, mostly cloudy with a good (50%) chance of isolated coastal showers in the evening and showers likely (60%) Thursday night (under 0.10 in. of rain possible), partly cloudy inland in the evening and mostly cloudy with a good (50%) chance of showers late Thursday night (0.25 in. of rain possible), showers Friday AM, showers likely (60%) in the afternoon (0.20 in. of rain possible), showers likely (60%) Friday night (), mostly cloudy with AM showers, showers Saturday afternoon, showers likely (60%) in the evening, then a good (50%) chance of showers late Saturday night lows 50-54 cooling to 45 Saturday night highs 63-56 warming to 60 Saturday. Mostly cloudy with a (40%) chance of showers Sunday through Monday, then mostly cloudy with a slight (20%) chance of showers Monday night through Wednesday highs 59-64 lows near 49. (seasonal averages high 62 low 51).
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Forecast for the Cascades of Lane County: Mostly clear tonight, mostly sunny Thursday AM, partly cloudy with a slight (20%) chance of showers Thursday afternoon, mostly cloudy with a (30%) chance of showers and a slight (20%) chance of thunderstorms in the evening, a (40%) chance of showers late Thursday night (under 0.10 in of rain possible), cloudy with a good (50%) chance of rain Friday AM, rain and cooler Friday afternoon (under 0.01 in. of rain possible), rain likely (60%) in the evening, showers likely (60%) late Friday night, showers Saturday, mostly cloudy with showers likely (60%) in the evening, then a a good (50%) chance of showers late Saturday night free air freezing level 14,000 ft. tonight, snow level above 8,000 ft. Thursday through Friday, 8,000 ft. falling to 6,500 ft. Friday night and Saturday, then 6,000 ft. Saturday night lows 45-38 highs 72-48. 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 38-43.
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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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