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11/18/2017

Saturday Post-Storm Analysis

Saturday's cold front packed quite the punch! Our WDRB counties saw 12 Severe Thunderstorm Warnings and 1 Tornado Warning through the afternoon.  That cold front is now dropping our temperatures.  This temperature fall actually happened in about 3 hours. 

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Just as forecast, wind was the main threat today.  That's why there were so many thunderstorm warnings.  As the night continues and the sun rises tomorrow, it is likely more damage reports will come in. Measured wind gusts exceeded 50 mph in several places around Kentuckiana. 

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On Sunday the National Weather Service office in Louisville will do a damage survey for the one tornado warning they issued. 

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It was near Mount Washington in Bullitt County.  Above you can see the reflectivity.  This is the exact moment the tornado warning was issued.  Below is the velocity showing the rotation.  Because winds were so universally strong today, we did not see the normal reds and greens next to each other in these rotation couplets.  Instead you see dark red next to pink/orange. 

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There was a small debris signature near this area of rotation for only a couple radar scans.  However that debris signature wasn't as tight/organized as we normally see in a storm like this.  The strong winds, especially higher up in the atmosphere, could have scattered any debris making it look less organized.  I'm not convinced there was a tornado touch down in this area, but it is VERY possible.  The National Weather Service will let us know tomorrow, so watch for updates.  Katie and I will keep you posted through the day. 

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-Hannah Strong

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It sure appears to have been a tornado touch down yesterday at the southeast Meade county border. Barns destroyed, many trees down and an unconfirmed death. Man in a trailer.

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