MESOSCALE DISCUSSION 0931
   NWS STORM PREDICTION CENTER NORMAN OK
   0233 PM CDT TUE MAY 24 2011
   
   AREAS AFFECTED...SRN VA...NRN NC
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 354...355...357...
   
   VALID 241933Z - 242100Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   354...355...357...CONTINUES.
   
   WW 354 IS SCHEDULED TO EXPIRE AT 21Z. COORDINATION WITH WFO RNK AND
   ADJACENT WFOS WILL OCCUR BETWEEN 20-21Z TO DISCUSS THE NEED FOR WW
   REPLACEMENT OR TEMPORAL EXTENSION OF THE EXISTING WW.
   
   WELL-DEFINED OUTFLOW BOUNDARY REMAINS REFLECTED IN VISIBLE SATELLITE
   AND SURFACE OBSERVATIONS TRAILING WEST TO EAST IN THE WAKE OF AN
   INITIAL MCS PROGRESSING ACROSS SERN VA/FAR NERN NC. ROBUST TSTM
   DEVELOPMENT HAS RECENTLY OCCURRED JUST N OF THIS BOUNDARY WHERE
   LOW-LEVEL CONVERGENCE/UPSLOPE IS MAXIMIZED IN FAR NWRN NC. THIS
   ACTIVITY ALONG WITH NUMEROUS UPSTREAM CLUSTERS WITHIN WW 357 WILL
   LIKELY POSE A CONTINUED RISK FOR PRIMARILY SEVERE WIND/HAIL GIVEN
   THE DEGREE OF HEATING /TEMPERATURES IN THE MIDDLE 80S TO LOWER 90S/
   THAT HAS TAKEN PLACE TO THE S OF THE OUTFLOW BOUNDARY.
   
   ..GRAMS.. 05/24/2011
   
   
   ATTN...WFO...AKQ...MHX...RAH...RNK...RLX...GSP...MRX...JKL...
   
   LAT...LON   36638378 36948344 37038213 36857823 36987672 36877626
               36597614 36317628 35867711 35747795 35657897 35658012
               35738073 35818156 36018232 36278315 36638378