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Mesoscale Discussion 791
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   MESOSCALE DISCUSSION 0791
   NWS STORM PREDICTION CENTER NORMAN OK
   0622 PM CDT TUE MAY 26 2015

   AREAS AFFECTED...NORTHERN LA/EXTREME SOUTHERN AR

   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 

   VALID 262322Z - 270045Z

   PROBABILITY OF WATCH ISSUANCE...5 PERCENT

   SUMMARY...ISOLATED HAIL TO SEVERE LEVELS COULD OCCUR ACROSS PORTIONS
   OF NORTHERN LA AND POSSIBLY FAR SOUTHERN AR THROUGH EARLY EVENING. A
   WATCH ISSUANCE IS UNLIKELY.

   DISCUSSION...CLUSTERS OF STORMS HAVE SOMEWHAT INCREASED/PERSISTED
   NORTHEASTWARD ACROSS FAR EAST TX AND NORTHWEST LA...INCLUDING ONE
   EXHIBITING SUPERCELL CHARACTERISTICS ACROSS SABINE PARISH AS OF 6PM
   CDT/23Z. THIS DEVELOPMENT...AND A FEW OTHER STORMS NEAR THE LA/AR
   BORDER...APPEAR TO BE OCCURRING IN WEST-EAST CORRIDORS RELATED TO
   PRIOR OUTFLOW/DIFFERENTIAL HEATING. WEAK LARGER-SCALE INFLUENCES
   WILL LIKELY TEMPER THE OVERALL EXTENT OF ANY SEVERAL RISK.
   HOWEVER...A MODEST FEED OF MODERATELY AIR /2500 J PER KG
   MLCAPE/...IN CONJUNCTION WITH VERTICAL SHEAR SUPPORTIVE OF
   SUPERCELLS /35 KT 0-6 KM PER FORT POLK AND SHREVEPORT WSR-88D VWP
   DATA/...COULD ALLOW FOR HAIL BRIEFLY TO REACH SEVERE LEVELS THROUGH
   EARLY EVENING.

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


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

   LAT...LON   31639374 32469399 33059367 33119171 32219155 31489193
               31349324 31639374 

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Page last modified: May 27, 2015
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