MESOSCALE DISCUSSION 1272
   NWS STORM PREDICTION CENTER NORMAN OK
   0345 PM CDT MON JUN 14 2004
   
   AREAS AFFECTED...ERN WV PANHANDLE...S-CENTRAL/SERN PA...NRN DE...AND
   MD
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 142045Z - 142245Z
   
   INCREASING CONVECTIVE COVERAGE AND INTENSITY IS EXPECTED ACROSS
   S-CENTRAL/SERN PA...MD...AND THE ERN WV PANHANDLE DURING THE NEXT
   FEW HOURS. WW MAY BE REQUIRED ACROSS THE REGION.
   
   THUNDERSTORMS HAVE BEGUN TO DEVELOP IN VICINITY OF S-CENTRAL
   PA/MD/WRN WV. REDUCTION OF HIGH CLOUDS DURING PAST SEVERAL HOURS HAS
   ALLOWED FOR BOUNDARY LAYER DESTABILIZATION...WITH 100MB MLCAPE
   VALUES OF 1000-1500 J/KG ACROSS THE DISCUSSION REGION. SRN PA/MD
   VICINITY IS ON SRN FRINGE OF STRONGER WSWLY MID-LEVEL FLOW. HOWEVER
   ...UPPER DIFFLUENCE AND GRADUALLY STRENGTHEN OF MID-LEVEL FLOW
   SHOULD OCCUR THROUGH THIS EVENING AS GREAT LAKES SHORTWAVE TROUGH
   AND ASSOCIATED MCS CONTINUE EWD. THEREFORE...THREAT EXISTS FOR
   INCREASING STORM ORGANIZATION AND FORWARD MOVEMENT ACROSS ESPECIALLY
   SRN/SERN PA...WITH POTENTIAL FOR ISOLATED DAMAGING WINDS AND LARGE
   HAIL ACROSS THE DISCUSSION AREA BY EARLY EVENING.
   
   ..BANACOS.. 06/14/2004
   
   
   ATTN...WFO...PHI...CTP...LWX...
   
   39437847 40047818 40477723 40687633 40687579 40557512
   40167487 39257591 39007692 39037744 39157826