MESOSCALE DISCUSSION 1687
   NWS STORM PREDICTION CENTER NORMAN OK
   1150 AM CDT FRI JUL 22 2011
   
   AREAS AFFECTED...FAR SRN LOWER MI...NRN IND AND WRN/NRN OH
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 221650Z - 221745Z
   
   WATCH LIKELY WILL BE ISSUED SOON AS THUNDERSTORM LINE...IN THE LOWER
   GREAT LAKES REGION...IS EXPECTED TO INTENSIFY. OTHER STORMS ARE ALSO
   LIKELY TO DEVELOP/INTENSIFY AHEAD OF THE LINE IN VERY UNSTABLE AND
   HOT AIR MASS. DEEP LAYER SHEAR AT 20-30 KT AND MLCAPES AOA 4000 J/KG
   WILL SUPPORT MOSTLY A SEVERE WIND THREAT.
   
   ..IMY.. 07/22/2011
   
   
   ATTN...WFO...PBZ...RLX...CLE...ILN...DTX...IWX...IND...
   
   LAT...LON   41458654 41968469 41548307 41208215 40488150 39838149
               39518196 39308265 39488459 39598546 39798620 39968643
               40578684 41458654