MESOSCALE DISCUSSION 0345
   NWS STORM PREDICTION CENTER NORMAN OK
   1022 AM CST FRI MAR 28 2003
   
   AREAS AFFECTED...IN/ERN IL/WRN KY/SWRN MI
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 281622Z - 281815Z
   
   LINES OF CONVECTION WILL DEVELOP ACROSS FAR ERN IL AND MOVE NE
   INTO WRN IN OVER THE NEXT FEW HOURS. ACTIVITY WILL HAVE A THREAT
   FOR WIND DAMAGE OR HAIL. AREA IS BEING MONITORED AND A WW MAY BE
   NECESSARY IN THE NEXT 2 TO 3 HOURS.
   
   SOUTHERLY FLOW IN WARM SECTOR AHEAD OF SERN WI SURFACE CYCLONE
   HAS INCREASED DEWPOINTS OVER FAR ERN IL/WRN IN INTO THE MID 50S F
   RESULTING IN SBCAPE OF 500 TO 1000 J/KG. AS CONVECTION DEVELOPS
   IN RESPONSE TO UPSTREAM VORTICITY MAX...DEEP LAYER SHEAR WILL
   INCREASE DUE TO MID/UPPER LEVEL JET APPROACHING THE AREA.
   ALTHOUGH MOSTLY UNIDIRECTIONAL WIND PROFILES...FORECAST SOUNDINGS
   SHOW 0-6 KM SHEAR INCREASING FROM 40 TO 55 KT BY 20Z SUGGESTING A
   POTENTIAL FOR WIND DAMAGE WITH LINEAR STORMS...AS WELL AS THE
   CHANCE FOR SUPERCELLS. ALSO...COLD TEMPERATURES ALOFT WILL
   PROMOTE POTENTIAL FOR HAIL. WW MAY BE NECESSARY OVER THE NEXT FEW
   HOURS.
   
   ..BROYLES.. 03/28/2003
   
   
   ATTN...WFO...LMK...IWX...GRR...IND...PAH...LOT...ILX...
   
   41258773 42888699 43058582 42488509 39348604 38298632
   36738704 36708901 37878875 38908834