MESOSCALE DISCUSSION 2218
   NWS STORM PREDICTION CENTER NORMAN OK
   0521 PM CDT THU SEP 29 2011
   
   AREAS AFFECTED...OH...NRN KY....SRN LOWER MI
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 292221Z - 292345Z
   
   THE SEVERE THREAT AHEAD OF A DEVELOPING FINE LINE ACROSS WRN OH IS
   EXPECTED TO INCREASE OVER THE NEXT FEW HOURS. WIND DAMAGE WILL BE
   POSSIBLE AS THE LINE MOVES INTO CNTRL OH EARLY THIS EVENING. WW
   ISSUANCE IS BEING CONSIDERED.
   
   A FINE LINE LOCATED IN WRN OH IS LOCATED ALONG A FAST MOVING COLD
   FRONT AND IN THE EXIT REGION OF A STRONG 80 TO 100 KT MID-LEVEL JET.
   THIS MID-LEVEL JET IS FORECAST TO MOVE QUICKLY ESEWD INTO IND THIS
   EVENING WITH THE EXIT REGION SPREADING ACROSS WRN AND CNTRL OH OVER
   THE NEXT FEW HOURS. THIS WILL INTENSIFY THE WIND FIELDS HELPING THE
   FINE LINE TO GRADUALLY BECOME MORE ORGANIZED. THIS SHOULD RESULT IN
   A WIND DAMAGE THREAT
   
   FURTHER TO THE NORTH NORTHWEST...A LINE OF STRONG THUNDERSTORMS IS
   MOVING ESEWD INTO SRN LOWER MI JUST AHEAD OF AN UPPER-LEVEL LOW.
   COLD AIR ALOFT ASSOCIATED WITH THE UPPER-LEVEL LOW IS CREATING
   CONDITIONS FAVORABLE FOR SMALL HAIL. A WIND DAMAGE THREAT MAY ALSO
   EXIST ESPECIALLY IF THE LINE CAN CONGEAL AND PERSIST EARLY THIS
   EVENING.
   
   ..BROYLES.. 09/29/2011
   
   
   ATTN...WFO...PBZ...RLX...CLE...ILN...DTX...IWX...GRR...
   
   LAT...LON   43588537 42978584 42508570 42058449 41688389 41268369
               40378394 39418473 39078489 38738462 38668339 39538238
               40208189 40938163 41548168 42628249 43368396 43588537