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Mesoscale Discussion 266
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   MESOSCALE DISCUSSION 0266
   NWS STORM PREDICTION CENTER NORMAN OK
   0434 PM CDT THU APR 03 2014

   AREAS AFFECTED...CENTRAL AR AND PARTS OF SRN MO

   CONCERNING...TORNADO WATCH 49...

   VALID 032134Z - 032200Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 49 CONTINUES.

   SUMMARY...A NEW TORNADO WATCH WILL BE COORDINATE SOON FOR CENTRAL AR
   AND PARTS OF SRN MO...WHICH INCLUDES REPLACING WW 49 THAT IS
   SCHEDULED TO EXPIRE AT 22Z.

   DISCUSSION...SURFACE HEATING ACROSS AR INTO SRN MO THIS AFTERNOON
   HAS AIDED IN SOME DESTABILIZATION IN THE WAKE OF EARLIER
   CONVECTION...WITH MLCAPE RANGING FROM 1500-2000 J/KG.  IN ADDITION
   TO THE AVAILABLE INSTABILITY...LITTLE ROCK WSR-88D WIND PROFILE
   SHOWED VERTICALLY VEERING WINDS WITH EFFECTIVE BULK SHEAR MORE THAN
   SUFFICIENT TO SUPPORT ORGANIZED STORMS...WHILE 0-3 KM SRH AROUND 300
   M2/S2 SUGGESTS A TORNADO THREAT.

   ..PETERS/THOMPSON.. 04/03/2014


   ATTN...WFO...PAH...MEG...LSX...LZK...SGF...SHV...TSA...

   LAT...LON   37809160 37149096 36559107 35029098 33969225 33389245
               33409308 33949393 34549429 35069411 36459317 36829262
               37159203 37809160 

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