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Mesoscale Discussion 644
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   MESOSCALE DISCUSSION 0644
   NWS STORM PREDICTION CENTER NORMAN OK
   1018 PM CDT THU MAY 14 2015

   AREAS AFFECTED...WEST TX

   CONCERNING...SEVERE THUNDERSTORM WATCH 171...

   VALID 150318Z - 150415Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 171
   CONTINUES.

   SUMMARY...NEW SEVERE THUNDERSTORM WATCH IS NOT
   ANTICIPATED...ALTHOUGH STRONG STORMS AND PERHAPS ISOLATED LARGE HAIL
   REMAIN POSSIBLE FOR THE NEXT FEW HOURS.

   DISCUSSION...CONVECTION IS GRADUALLY EXPANDING ACROSS PARTS OF THE
   TX SOUTH PLAINS INTO THE SRN TX PANHANDLE ALONG NOSE OF INCREASING
   LLJ.  THIS ACTIVITY SHOULD EVOLVE INTO AN MCS OVER THE NEXT SEVERAL
   HOURS WITH PROPAGATION EXPECTED INTO SWRN OK AS LLJ VEERS INTO THE
   EARLY  MORNING HOURS.  ISOLATED LARGE HAIL REMAINS THE PRIMARY
   THREAT...THOUGH OVERALL TRENDS APPEAR TO SUGGEST HAIL WILL REMAIN
   MOSTLY BELOW SEVERE LEVELS.  FOR THIS REASON NEW WW IS NOT
   ANTICIPATED.

   ..DARROW.. 05/15/2015


   ATTN...WFO...OUN...SJT...LUB...MAF...ABQ...

   LAT...LON   30610357 33850312 33869998 30610052 30610357 

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