MESOSCALE DISCUSSION 1108
   NWS STORM PREDICTION CENTER NORMAN OK
   0615 AM CDT MON JUN 06 2011
   
   AREAS AFFECTED...SRN WI...NRN IL
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 431...
   
   VALID 061115Z - 061245Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 431
   CONTINUES.
   
   DUAL SUPERCELLS PRODUCING VERY LARGE HAIL WERE ONGOING ACROSS S
   CNTRL WI THIS MORNING...SUPPORTED BY A WLY LOW LEVEL JET/INSTABILITY
   FEED AND MODERATE NWLY FLOW ALOFT. THESE STORMS...BEING
   SUPERCELLS...ARE MOVING RELATIVELY SLOW COMPARED TO EARLIER ACTIVITY
   AND OTHER WEAKER LEAD ACTIVITY OVER SERN WI.
   
   THESE STORMS MAY EVENTUALLY AFFECT PORTIONS OF NRN IL LATER THIS
   MORNING. HOWEVER...IF THE CELLS REMAIN SUPERCELLULAR...THEY MAY END
   UP DISSIPATING BEFORE THEY GET INTO IL DUE TO VERY SLOW STORM
   MOTIONS. 
   
   IF THEY PRODUCE A LARGER COLD POOL AND BEGIN TO BOW...THEY WOULD
   LIKELY ACCELERATE SEWD WITH WIND AND HAIL THREAT...AND AN ADDITIONAL
   WATCH COULD BE NEEDED.
   
   ..JEWELL.. 06/06/2011
   
   
   ATTN...WFO...GRB...LOT...MKX...DVN...ARX...
   
   LAT...LON   42868968 43359006 43869074 44259067 44329028 44228970
               43968927 43488854 42828803 42448773 41888739 41568756
               41478823 41678909 42198943 42868968