MESOSCALE DISCUSSION 1856
   NWS STORM PREDICTION CENTER NORMAN OK
   0713 PM CDT SAT SEP 01 2012
   
   AREAS AFFECTED...E CNTRL IL
   
   CONCERNING...TORNADO WATCH 602...
   
   VALID 020013Z - 020115Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 602 CONTINUES.
   
   SUMMARY...THOUGH AN ISOLATED TORNADO OR TWO REMAINS
   POSSIBLE...OVERALL SEVERE THREAT EXPECTED TO BECOME INCREASINGLY
   MARGINAL OVER REMAINING PART OF WW 602 AND POINTS EAST. HOWEVER...WW
   MAY BE EXPANDED FARTHER EAST INTO SRN IND AND WRN KY.
   
   DISCUSSION...STORMS HAVE EVOLVED INTO PREDOMINANT LINEAR MODES WITH
   TRAILING STRATIFORM AREA FROM ECNTRL THROUGH SERN IL...BUT A COUPLE
   DISCRETE CELLS REMAIN. LOW LEVEL WINDS ARE BACKED TO ESELY ACROSS
   ECNTRL IL...BUT SIZE OF HODOGRAPHS ARE LIMITED BY WEAK WIND SPEEDS.
   WITH STRONGER 0-3 KM FLOW AND GREATER INSTABILITY PERSISTING SOUTH
   OF REMAINING PARTS OF WW 602...OVERALL SEVERE THREAT IS EXPECTED TO
   GRADUALLY DIMINISH IN THIS AREA WITH ONSET OF NOCTURNAL COOLING.
   REMAINING PARTS OF WW 602 CAN BE CANCELLED AS NEEDED AS ONGOING
   CONVECTION SHIFTS FARTHER EAST.
   
   ..DIAL.. 09/02/2012
   
   
   ATTN...WFO...IND...LOT...ILX...
   
   LAT...LON   39278801 39648805 40378846 40568787 40198744 39348751
               39278801