MESOSCALE DISCUSSION 0951
   NWS STORM PREDICTION CENTER NORMAN OK
   0833 AM CDT WED MAY 25 2011
   
   AREAS AFFECTED...ERN IL AND IND
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 251333Z - 251500Z
   
   A SEVERE THREAT WILL LIKELY SPREAD EWD ACROSS IND OVER THE NEXT FEW
   HOURS. THE SEVERE STORMS WILL BE CAPABLE OF PRODUCING
   TORNADOES...HAIL AND ISOLATED WIND DAMAGE. WW ISSUANCE WILL LIKELY
   BE NEEDED OVER THE NEXT HOUR ACROSS THE REGION.
   
   A NEARLY CONTINUOUS LINE OF STRONG THUNDERSTORMS IS ONGOING IN ERN
   IL THE NOSE OF A 55 TO 65 KT MID-LEVEL JET EJECTING NEWD ACROSS THE
   MID-MS VALLEY. THE LINE IS ALSO LOCATED ALONG THE LEADING EDGE OF
   LARGE-SCALE ASCENT ASSOCIATED WITH A SHORTWAVE TROUGH ROUNDING THE
   ERN EDGE OF THE CNTRL PLAINS UPPER-LEVEL LOW. AS THIS FEATURE ALONG
   WITH THE MID-LEVEL JET MOVE EWD THIS MORNING...THE LIFT AND STRONG
   DEEP LAYER SHEAR WILL SUPPORT SEVERE THUNDERSTORM DEVELOPMENT ACROSS
   IND. THE STORMS WILL ALSO HAVE ACCESS TO INCREASING LOW-LEVEL SHEAR
   AS A PRONOUNCED LOW-LEVEL JET MOVES EWD ACROSS CNTRL IND MAKING
   CONDITIONS FAVORABLE FOR TORNADOES AND DAMAGING WINDS ESPECIALLY
   WITH BOWING-LINE SEGMENTS. IN ADDITION TO THE TORNADO AND WIND
   DAMAGE THREAT...HAIL WILL BE POSSIBLE WITH THE MORE INTENSE CELLS.
   
   ..BROYLES.. 05/25/2011
   
   
   ATTN...WFO...ILN...IWX...IND...LOT...ILX...
   
   LAT...LON   39868474 40708497 41288639 41278749 41158803 40848847
               40508882 40148892 39688865 39288758 39048634 39168531
               39408493 39868474