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Dec. 10-11 Severe Weather


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TE for Benton.

Quote
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Paducah KY
945 PM CST Fri Dec 10 2021

...TORNADO EMERGENCY FOR Benton...

The National Weather Service in Paducah has issued a

* Tornado Warning for...
  Southwestern Marshall County in western Kentucky...

* Until 1000 PM CST.

* At 944 PM CST, a confirmed large and destructive tornado was
  observed near Benton, moving northeast at 60 mph.

  TORNADO EMERGENCY for Benton. This is a PARTICULARLY DANGEROUS
SITUATION. TAKE COVER NOW!

  HAZARD...Deadly tornado.

  SOURCE...Radar confirmed tornado.

  IMPACT...You are in a life-threatening situation. Flying debris
           may be deadly to those caught without shelter. Mobile
           homes will be destroyed. Considerable damage to homes,
           businesses, and vehicles is likely and complete
           destruction is possible.

* This tornadic thunderstorm will remain over mainly rural areas of
  southwestern Marshall County.

 

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45 PM CST FRI DEC 10 2021  
   
..TORNADO EMERGENCY FOR BENTON  
  

      
* AT 944 PM CST, A CONFIRMED LARGE AND DESTRUCTIVE TORNADO WAS  
  OBSERVED NEAR BENTON, MOVING NORTHEAST AT 60 MPH.  
  
  TORNADO EMERGENCY FOR BENTON. THIS IS A PARTICULARLY DANGEROUS   
SITUATION. TAKE COVER NOW!  
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8 minutes ago, andyhb said:

Debris to 35k feet on that Mayfield storm. Easily an EF4 or EF5.

In light of the debris height, the TBSS, and the fact it basically went through a major town, the odds of finding EF5 damage are actually pretty high. As you know, the surveys done after are looking for degrees of damage. A LOT of the time, there's evidence for a stronger rating, but the tornado didn't hit anything at that time that would be able to score a degree of damage to indicate such wind speed (e.g., the thing would be entirely destroyed, lofted, or otherwise "maximally damaged" at a lower wind speed). Since this hit basically center to a town, many homes were hit. We can reasonably assume this is a multivortex, so, all it takes is 1 subvortex hitting one well built house and sweeping it from the foundation to classify the entire thing as an EF5. The 2020 Bassfield tornado was a potential EF5, couldn't find damage consistent with that intensity. Something tells me this is different. 

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HE SEVERE WEATHER THREAT FOR TORNADO WATCH 552, 554 CONTINUES.  
  
SUMMARY...A STRONG TO POTENTIALLY VIOLENT TORNADO IS ONGOING AND  
EXPECTED TO CONTINUE FOR AT LEAST ANOTHER HOUR.  
  
DISCUSSION...A STRONG SUPERCELL WITH A HISTORY OF A LONG-TRACK  
TORNADO WITH INTENSE TO POTENTIALLY VIOLENT DAMAGE HAS RECENTLY  
INTENSIFIED ONCE AGAIN ACROSS SOUTHWEST KENTUCKY. LATEST RADAR AND  
ENVIRONMENTAL ANALYSIS GIVE HIGH CONFIDENCE THAT AN INTENSE TO  
POTENTIALLY VIOLENT TORNADO HAS OCCURRED ACROSS SOUTHWEST KENTUCKY.  
THE RADAR PRESENTATION OF THIS STORM CONTINUES TO BE EXTREMELY  
FAVORABLE FOR CONTINUED INTENSE, LONG-LIVED TORNADOES. NEARBY  
CONVECTION HAS MOSTLY DISSIPATED WHICH MAY ALLOW A MORE STEADY-STATE  
TO CONTINUE AS IT MOVES NORTHEAST. THE DOWNSTREAM ENVIRONMENT  
REMAINS VERY FAVORABLE WITH UPPER 60S TO LOW 70S DEWPOINTS AND  
BACKED SURFACE WINDS WITH STP AROUND 5 TO 6. EVENTUALLY, EXPECT  
STORM ACTIVITY TO THE WEST TO CATCH THIS SUPERCELL, BUT UNTIL THAT  
HAPPENS, CONTINUED STRONG TO POTENTIALLY VIOLENT TORNADIC DAMAGE IS  
EXPECTED TO CONTINUE ALONG ITS PATH.  
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