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Mesoscale Discussion 772
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   MESOSCALE DISCUSSION 0772
   NWS STORM PREDICTION CENTER NORMAN OK
   0606 PM CDT MON MAY 25 2015

   AREAS AFFECTED...MIDDLE/UPPER TX COAST INTO SOUTHERN LA

   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 

   VALID 252306Z - 260000Z

   PROBABILITY OF WATCH ISSUANCE...80 PERCENT

   SUMMARY...A TORNADO WATCH MAY BE NEEDED THIS EVENING FOR PORTIONS OF
   THE MIDDLE/UPPER TX COAST INTO SOUTHERN LA...WITH CONCERNS FOR
   DAMAGING WINDS AND A FEW TORNADOES.

   DISCUSSION...A COMPOSITE SQUALL CONTINUES TO MOVE SLOWLY
   EASTWARD/REGENERATE ON ITS SOUTHERN FLANK JUST TO THE EAST OF THE
   AUSTIN/SAN ANTONIO AREAS AS OF 6 PM CDT/23Z. CONTINUED CELL
   MERGERS...SOUTHEASTERLY LOW-LEVEL INFLOW OF A VERY
   UNSTABLE/MOISTURE-RICH BOUNDARY LAYER /MIDDLE TO UPPER 70S F
   DEWPOINTS/...ALONG WITH SOME INCREASE IN THE LOWER/MID-TROPOSPHERIC
   WESTERLY COMPONENT SHOULD ALLOW FOR EASTWARD STORM SUSTENANCE INTO
   ADDITIONAL PORTIONS OF THE MIDDLE/UPPER TX COASTAL PLAIN AND
   EVENTUALLY WESTERN/SOUTHERN LA TONIGHT. DAMAGING WINDS AND A TORNADO
   RISK WILL BE POSSIBLE...PARTICULARLY AS NEAR-SURFACE
   SOUTH/SOUTHEASTERLY WINDS CONTINUE TO INCREASE THIS EVENING WITH A
   CORRESPONDING INCREASE IN LOW-LEVEL SRH.

   ..GUYER/CORFIDI.. 05/25/2015


   ATTN...WFO...LCH...SHV...HGX...CRP...EWX...

   LAT...LON   28729718 29779671 31189378 30889260 29909303 28619549
               28729718 

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Page last modified: May 26, 2015
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