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Mesoscale Discussion 43
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MD 43 graphic

   Mesoscale Discussion 0043
   NWS Storm Prediction Center Norman OK
   0316 PM CST Sat Jan 11 2020

   Areas affected...Portions of eastern AL...western GA...eastern
   TN...and far southwestern NC

   Concerning...Tornado Watch 15...

   Valid 112116Z - 112245Z

   The severe weather threat for Tornado Watch 15 continues.

   SUMMARY...Scattered to numerous damaging winds should be the main
   severe threat across Tornado Watch 15 for the next couple of hours.
   A brief/isolated tornado may also occur. A local extension in area
   may be needed for parts of eastern Tennessee based on recent radar
   trends.

   DISCUSSION...Numerous damaging wind reports have occurred across
   central/eastern AL over the past several hours as a well established
   squall line has moved east-northeastward. Damaging winds of 50-60+
   mph will likely remain the primary severe risk across eastern AL
   into western GA and parts of southeastern TN in the short term as
   weak but sufficient instability exists downstream of the ongoing
   convection. In addition, strong low-level shear, as shown in various
   VWPs from this region, will support an embedded isolated tornado
   threat for at least the next couple of hours. Weak destabilization
   has also occurred into more of eastern TN this afternoon, which may
   necessitate a northward extension in area of Tornado Watch 15 for
   this region.

   ..Gleason.. 01/11/2020

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...GSP...MRX...FFC...OHX...BMX...

   LAT...LON   33148430 31968451 32018511 32078578 32338588 32838601
               33428589 34868513 35378516 35688520 36168483 36358423
               36278356 36068311 35678316 34958344 34058370 33148430 

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