MESOSCALE DISCUSSION 0991
   NWS STORM PREDICTION CENTER NORMAN OK
   0754 PM CDT THU MAY 26 2011
   
   AREAS AFFECTED...CNTRL/ERN PA
   
   CONCERNING...TORNADO WATCH 383...
   
   VALID 270054Z - 270200Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 383 CONTINUES.
   
   THREAT OF DMGG WINDS AND LARGE HAIL WILL CONTINUE ACROSS PORTIONS OF
   CNTRL/ERN PA...WHILE THE THREAT OF TORNADOES APPEARS TO BE
   DIMINISHING. A NEW WW DOWNSTREAM OF CURRENT CONVECTION DOES NOT
   APPEAR NECESSARY AT THIS TIME.
   
   COLD POOL HAS TEMPORARILY BECOME BETTER ORGANIZED ACROSS CNTRL/ERN
   PA...WITH PROPAGATION TOWARDS GREATER INSTABILITY THAT EXISTS OVER
   ERN PA/FAR WRN NJ. CONVECTIVE INHIBITION AROUND 925 MB PER 00Z UPTON
   NY SOUNDING WILL LIKELY IMPEDE THE CONTINUANCE OF SURFACE-BASED
   STORMS FARTHER EAST...WHILE RECENT RADAR IMAGERY REFLECTS THAT
   OUTFLOW IS NOW PROGRESSING AHEAD OF THE MAIN AREA OF
   CONVECTION...WHICH MAY EVENTUALLY ACT TO WEAKEN THE ONGOING CLUSTER
   OF STORMS. THEREFORE...AN ADDITIONAL WW DOWNSTREAM DOES NOT APPEAR
   NECESSARY AT THE MOMENT. THE THREAT OF DMGG WINDS AND LARGE HAIL
   SHOULD GRADUALLY DIMINISH WITH TIME.
   
   ..HURLBUT.. 05/27/2011
   
   
   ATTN...WFO...PHI...BGM...CTP...
   
   LAT...LON   41977534 41387473 41147547 40127606 39767612 39767800
               41637742 41987689 41977534