MESOSCALE DISCUSSION 1270, AREAS AFFECTED...DELMARVA INTO SERN VA CONCERNING...SEVERE THUNDERSTORM WATCH 425

        MESOSCALE DISCUSSION 1270     NWS STORM PREDICTION CENTER NORMAN OK     0944 AM CDT MON JUN 25 2012          AREAS AFFECTED...DELMARVA INTO SERN VA          CONCERNING...SEVERE THUNDERSTORM WATCH 425...          VALID 251444Z - 251545Z          THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 425     CONTINUES.          SUMMARY...SEVERE THREAT WILL GRADUALLY SHIFT SWD ACROSS THE DELMARVA     INTO THE EARLY AFTERNOON HOURS.          DISCUSSION...STRONG HEATING IS WELL UNDERWAY ACROSS THE DELMARVA     INTO SRN VA.  LATEST DIAGNOSTIC DATA SUPPORTS THIS WITH SFC-3KM     LAPSE RATES NOW APPROACHING 8 C/KM SOUTH OF THE WIND SHIFT.  AS AIR     MASS CONTINUES TO DESTABILIZE IT APPEARS CU FIELD WILL GRADUALLY     DEEPEN NEAR/EAST OF PRE-FRONTAL WIND SHIFT SUCH THAT DEEP CONVECTION     SHOULD DEVELOP ACROSS THIS REGION AS SFC TEMPERATURES WARM INTO THE     MID-UPPER 80S.  ENHANCED LOW LEVEL CONVERGENCE ALONG THE PRE-FRONTAL     BOUNDARY AND SAGGING COLD FRONT SHOULD SERVE TO FOCUS THIS ACTIVITY.     DAMAGING WINDS ARE THE GREATEST SEVERE THREAT WITH THIS CONVECTION     AND WILL CONTINUE TO MONITOR THIS REGION.          ..DARROW.. 06/25/2012               ATTN...WFO...PHI...AKQ...LWX...          LAT...LON   37367819 39317628 38717453 36617633 37367819