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Mesoscale Discussion 459
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   Mesoscale Discussion 0459
   NWS Storm Prediction Center Norman OK
   0701 PM CDT Wed Apr 28 2021

   Areas affected...South-central Texas

   Concerning...Tornado Watch 120...

   Valid 290001Z - 290130Z

   The severe weather threat for Tornado Watch 120 continues.

   SUMMARY...A threat for very large hail, wind damage and possibly a
   tornado will move eastward into the San Antonio Metro around 8 pm
   central.

   DISCUSSION...The latest radar shows a cluster of severe storms
   located about 60 statute miles to the west of San Antonio. Ahead of
   these storms, the RAP is analying a pocket of strong instability
   with MLCAPE near 4500 J/kg and 0-6 km shear near 50 kt. This
   environment will be very favorable for supercells with large hail.
   Hailstones of greater than 3 inches in diameter will be possible
   with the stronger updrafts. Wind gusts exceeding 65 knots may also
   occur, with the possibility of wind driven hail.

   ..Broyles/Guyer.. 04/29/2021

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

   ATTN...WFO...EWX...

   LAT...LON   29229768 29109871 29309934 29849916 30159786 30109717
               29539710 29229768 

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