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Mesoscale Discussion 871
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   Mesoscale Discussion 0871
   NWS Storm Prediction Center Norman OK
   0350 PM CDT Sat May 27 2017

   Areas affected...Portions of far eastern MO...southern
   IL/IN...western/central KY...and western/middle TN

   Concerning...Severe Thunderstorm Watch 276...

   Valid 272050Z - 272215Z

   The severe weather threat for Severe Thunderstorm Watch 276

   SUMMARY...A widespread damaging wind threat will increase across
   western portions of WW 276 over the next several hours. Isolated
   large hail remains possible too.

   DISCUSSION...Scattered to numerous convection has developed over the
   past several hours across WW 276 along a front in southern IL/IN, as
   well as along an outflow boundary across western KY into middle TN.
   Multiple instances of large hail (1-1.75 inches in diameter) have
   been reported with the strongest cores, and the overall environment
   across this region remains favorable for the maintenance of strong
   to severe convection through the evening hours. A more organized and
   widespread damaging wind threat will likely impact western portions
   of WW 276 (southern IL/IN, western KY/TN) over the next several
   hours. Latest radar loops shows a bowing line of thunderstorms
   moving east-southeastward across southern IL as of 2045Z, with 50+
   kt inbound velocities present on the KPAH radar. Damaging winds will
   likely occur with this convection, and an even more widespread
   damaging wind threat may be realized with a second bowing line
   moving quickly eastward across central/southern MO if it can
   maintain its intensity as it moves into western portions of WW 276.

   ..Gleason.. 05/27/2017

   ...Please see for graphic product...


   LAT...LON   36258985 38248953 38708539 37988462 37148498 36108536
               35898736 35848933 36258985 

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