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Mesoscale Discussion 797
MD 797 graphic
   
   MESOSCALE DISCUSSION 0797
   NWS STORM PREDICTION CENTER NORMAN OK
   0249 PM CDT TUE MAY 06 2003
   
   AREAS AFFECTED...NCNTRL-NWRN PA
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 061949Z - 062145Z
   
   ISOLATED STRONG CELLS WERE DEVELOPING IN NWRN PA AND WILL CONTINUE
   TO MOVE EWD. CONVECTION WILL HAVE THE POTENTIAL FOR HAIL. WW MAY BE
   NEEDED ACROSS PA WITHIN THE NEXT HOUR.
   
   LAKE BREEZE FRONT OFF OF LAKE ERIE WAS LOCATED FROM NEAR AKRON OH
   EXTENDING NE TO NEAR JAMESTOWN PA. AS THE BOUNDARY MOVES FARTHER
   INLAND...LOW-LEVEL CONVERGENCE WILL HELP INITIATE NEW CELLS ALONG
   THE BOUNDARY. MLCAPE WAS MARGINAL...HOWEVER...DEWPOINTS IN THE MID
   TO UPPER 50S AND SFC TEMPS AROUND 70 F HAVE RESULTED IN SBCAPE
   AROUND 2000 J/KG. DEEP LAYER SHEAR HAS INCREASED SOME OVER WRN PA
   WITH 0-6 KM SHEAR AROUND 40 KT. THIS MAY BE SUFFICIENT FOR A FEW
   ORGANIZED SEVERE STORMS. 500 MB TEMPS AROUND -16 C SHOULD MAKE LARGE
   HAIL A THREAT.
   
   ..BROYLES.. 05/06/2003
   
   
   ATTN...WFO...BGM...CTP...PBZ...
   
   41507967 41997921 41707689 40727728 40847958 
   
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