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Mesoscale Discussion 778
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   MESOSCALE DISCUSSION 0778
   NWS STORM PREDICTION CENTER NORMAN OK
   1014 PM CDT MON MAY 25 2015

   AREAS AFFECTED...EASTERN/SOUTHERN LA INTO SOUTHWEST MS

   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 

   VALID 260314Z - 260445Z

   PROBABILITY OF WATCH ISSUANCE...80 PERCENT

   SUMMARY...A DAMAGING WIND/SOME TORNADO THREAT ASSOCIATED WITH AN
   EASTWARD-MOVING SQUALL LINE MAY CONTINUE EAST OF CURRENT TORNADO
   WATCHES INTO ADDITIONAL PORTIONS OF EASTERN/SOUTHERN LA AND POSSIBLY
   SOUTHWEST MS.

   DISCUSSION...SQUALL LINE WITH UPSTREAM HISTORY OF DAMAGING WINDS/FEW
   TORNADOES ACROSS SOUTHEAST TX WITH CONTINUE EASTWARD ACROSS LA
   THROUGH LATE EVENING/EARLY IN THE OVERNIGHT. HIGHLY ORGANIZED NATURE
   OF THE SQUALL LINE/EMBEDDED BOWS WILL CONTINUE TO POSE A DAMAGING
   WIND/SOME TORNADO RISK INTO A VERY MOIST/UNSTABLE ENVIRONMENT THAT
   EXISTS ESPECIALLY ACROSS SOUTHERN LA. IN THE WAKE OF EARLIER OUTFLOW
   AND SHOWERS/THUNDERSTORMS...THE BOUNDARY LAYER HAS LARGELY
   STABILIZED FROM NORTHEAST LA INTO MS...BUT THE EXISTING ORGANIZATION
   OF THE SQUALL LINE AND A SOUTHWESTERLY LOW-LEVEL FEED OF
   MOISTURE/INSTABILITY COULD STILL RESULT IN SOME SEVERE RISK INTO
   THESE AREAS.

   ..GUYER/CORFIDI.. 05/26/2015


   ATTN...WFO...JAN...LIX...LCH...SHV...

   LAT...LON   29789266 32629173 32769099 32069026 30619053 30079022
               29319077 29789266 

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Page last modified: May 26, 2015
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