MESOSCALE DISCUSSION 1195
   NWS STORM PREDICTION CENTER NORMAN OK
   0101 AM CDT THU JUN 18 2009
   
   AREAS AFFECTED...SRN IA...NRN AND ERN MO...FAR WRN IL
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 180601Z - 180730Z
   
   SEVERE STORMS NOW OVER SRN IA ARE SHOWING SIGNS THAT IT MAY BE
   GROWING UPSCALE INTO AN MCS. VERY STRONG AND DAMAGING WINDS AS WELL
   AS LARGE HAIL WILL BE LIKELY. A WW MAY BE NEEDED OVER NRN MO AND WRN
   IL IN THE NEXT HOUR OR SO.
   
   A STRONG INSTABILITY GRADIENT IS IN PLACE FROM SW IA EWD TO THE MID
   MS VALLEY REGION. W TO NWLY FLOW ALOFT AND WLY LOW LEVEL FLOW IS
   CREATING DEEP LAYER SHEAR VECTORS ROUGHLY PARALLEL TO THIS GRADIENT.
   GIVEN MINIMAL CAPPING...SEVERE STORMS OVER SRN IA SHOULD CONTINUE TO
   CONGEAL AND DEVELOP SEWD INTO NRN MO AND WRN IL. DAMAGING WINDS WILL
   BE THE PRIMARY THREAT...WITH HAIL LIKELY AS WELL.
   
   ..JEWELL.. 06/18/2009
   
   
   ATTN...WFO...ILX...LSX...DVN...DMX...EAX...
   
   LAT...LON   40279372 40979387 41149317 40989060 40798999 40268960
               39228975 39069046 39359146 39589234 39999324 40279372