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Mesoscale Discussion 833
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   Mesoscale Discussion 0833
   NWS Storm Prediction Center Norman OK
   0250 PM CDT Wed May 24 2017

   Areas affected...Central/eastern Kentucky and eastern Tennessee

   Concerning...Tornado Watch 264...

   Valid 241950Z - 242045Z

   The severe weather threat for Tornado Watch 264 continues.

   SUMMARY...At least an isolated severe threat continues across WW

   DISCUSSION...Scattered thunderstorms are ongoing across northwestern
   portions of WW 264, with one dominant linear segment over Pulaski
   County, Kentucky.  More non-lightning-producing convection was
   located south of this activity into eastern Tennessee.  More recent
   convection has struggled to maintain intensity over the past hour or
   so, with convection over south-central Kentucky likely inhibited by
   downstream overturning, which has limited instability.  Farther east
   into southeastern Kentucky, the boundary layer remains cooled from
   previous rainfall that has now moved to the east of the discussion
   area.  Despite these negating factors for convective intensity,
   shear profiles, areas of insolation, and warm advection (especially
   over eastern Tennessee) will likely result in a continued isolated
   threat for hail, damaging winds, and a tornado or two over the next
   few hours - especially with storms that organize into linear
   segments and/or exhibit rotation.  

   Farther southwest, low-level flow has veered to westerly and surface
   temperatures have cooled, limiting the tornado threat in areas
   near/east of Nashville and west of CSV (Cumberland, Tennessee). 
   These portions of WW 264 may be cancelled before the originally
   scheduled expiration time (00Z).

   ..Cook/Kerr.. 05/24/2017

   ...Please see for graphic product...


   LAT...LON   38068526 38418481 38598395 38418325 37638254 37048245
               36488260 36148270 35798318 35458354 35188381 35038414
               35078431 35308456 35898473 36498485 36758532 36868575
               37068589 37568579 37878549 38228501 38068526 

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