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Mesoscale Discussion 776
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   MESOSCALE DISCUSSION 0776
   NWS STORM PREDICTION CENTER NORMAN OK
   0818 PM CDT MON MAY 25 2015

   AREAS AFFECTED...PORTIONS OF NERN KS...SERN NEB...SWRN/CNTRL
   IA...NWRN MO

   CONCERNING...SEVERE THUNDERSTORM WATCH 213...214...

   VALID 260118Z - 260245Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   213...214...CONTINUES.

   SUMMARY...THE THREAT FOR SOME MARGINALLY SEVERE HAIL AND/OR STRONG
   WIND GUSTS CONTINUES THIS EVENING...BUT SHOULD GRADUALLY DIMINISH
   OVER THE NEXT FEW HOURS.

   DISCUSSION...THE CURRENT WSR-88D MOSAIC DEPICTS A SOMEWHAT NEBULOUS
   CONVECTIVE EVOLUTION ACROSS MUCH OF WW 213 AND 214...WITH A BROKEN
   BAND OF STRONG STORMS OVER NWRN MO/NERN KS AND SOME SLIGHTLY
   ELEVATED /BUT STILL STRONG/ CELLS OVER FAR WRN PORTIONS OF WW 214.
   ONGOING ORGANIZED UPDRAFTS AND NEW CONVECTIVE DEVELOPMENT RESULTING
   FROM OUTFLOW MERGERS/ENHANCED SFC CONVERGENCE WILL STILL HAVE SOME
   MARGINAL POTENTIAL TO PRODUCE LARGE HAIL/STRONG WIND GUSTS OVER THE
   NEXT COUPLE OF HOURS...FACILITATED BY APPROX 1000-1500 J/KG OF
   REMAINING MLCAPE AND DEEP-LAYER SHEAR AROUND 30 KT /SAMPLED BY KDMX
   VWP/. HOWEVER...CONVECTIVE OVERTURNING AND NOCTURNAL COOLING SHOULD
   ENABLE A GRADUAL DECREASE IN THE THREAT THIS EVENING...WITH THE
   GREATEST RELATIVE POTENTIAL PERSISTING OVER SERN PORTIONS OF WW 214.

   ..PICCA.. 05/26/2015


   ATTN...WFO...DMX...EAX...OAX...TOP...

   LAT...LON   39549765 42389515 42419225 40059374 39259562 38709653
               38859725 39549765 

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Page last modified: May 26, 2015
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