MESOSCALE DISCUSSION 0625
   NWS STORM PREDICTION CENTER NORMAN OK
   0708 PM CDT SUN MAY 09 2004
   
   AREAS AFFECTED...SERN PA...NERN MD...SRN NJ...DE
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 100008Z - 100215Z
   
   ISOLATED SEVERE THUNDERSTORM THREAT WILL EXIST ACROSS FAR SERN PA
   SEWD INTO SRN NJ/NERN MD/DE DURING THE NEXT 1-3 HOURS. EXPECTED
   SHORT DURATION OF SEVERE THREAT WILL PRECLUDE WW ISSUANCE.
   
   AT 00Z...ISOLATED STRONG TO SEVERE THUNDERSTORM CELLS EXTEND FROM
   CUMBERLAND COUNTY ESEWD INTO CHESTER COUNTY PA. STORMS ARE TRACKING
   GENERALLY 300/25 KT...GENERALLY ALONG A MODEST NW-SE ORIENTED
   LOW-LEVEL BAROCLINIC ZONE ORIENTED FROM CENTRAL PA INTO SRN NJ.
   GREATER INSTABILITY EXISTS JUST SOUTH OF THIS AREA...WITH SURFACE
   DEWPOINTS IN THE MID 60S CONTRIBUTING TO MLCAPE OF 1000-1500 J/KG
   ACROSS NERN MD AND PART OF THE DELMARVA. LACK OF LARGE-SCALE FORCING
   AND DIURNAL COOLING SHOULD LEAD TO A WEAKENING TREND OF MOST STORMS.
   HOWEVER...A FEW SEVERE CELLS TAPPING BETTER AIR MASS ACROSS NERN MD
   MAY PERSIST THROUGH 03Z OR SO WITH THE THREAT OF ISOLATED LARGE HAIL
   OR SEVERE WIND. GREATEST THREAT DURING THE NEXT FEW HOURS SHOULD
   MIGRATE INTO NERN MD/NRN DE/FAR SRN NJ.
   
   ..BANACOS.. 05/10/2004
   
   
   ATTN...WFO...PHI...CTP...LWX...
   
   39937769 40217750 40437692 40437632 40367593 40057553
   39867531 39617508 39397515 39257537 39207589 39347662
   39487746