MESOSCALE DISCUSSION 0362
   NWS STORM PREDICTION CENTER NORMAN OK
   0403 AM CDT TUE APR 05 2011
   
   AREAS AFFECTED...PORTIONS SERN PA...NJ.
   
   CONCERNING...SEVERE POTENTIAL...WATCH NEEDED SOON 
   
   VALID 050903Z - 050930Z
   
   WW ISSUANCE IS NECESSARY N OF WW 101...WHERE NRN END OF EXTENSIVE
   SQUALL LINE WILL POSE THREAT OF DAMAGING GUSTS.  NARROW CORRIDOR OF
   MRGLLY DESTABILIZING BOUNDARY LAYER AIR EXTENDS UP DE VALLEY FROM
   DELMARVA REGION AMIDST FAVORABLY STG LOW-MIDLEVEL WIND
   PROFILES...LEADING TO THREAT FOR MOMENTUM TRANSFER TO GROUND IN MOST
   INTENSE DOWNDRAFTS.  SOME OF THIS AIR MASS MAY ADVECT CLOSER TO
   COAST AND SHUNT STABLE MARINE AIR EWD SLIGHTLY...GIVEN POTENTIAL FOR
   SOME VEERING OF BOUNDARY-LAYER FLOW IMMEDIATELY AHEAD OF QLCS.
   
   ..EDWARDS.. 04/05/2011
   
   
   ATTN...WFO...OKX...PHI...BGM...CTP...LWX...
   
   LAT...LON   39737644 40897587 41177540 41167480 40717456 40227397
               39477435 38967498 39367539 39637560 39737644