MESOSCALE DISCUSSION 1259
   NWS STORM PREDICTION CENTER NORMAN OK
   1208 PM CDT SUN JUN 08 2003
   
   AREAS AFFECTED...CNTRL/ERN KY...MIDDLE/ERN TN
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 081708Z - 081915Z
   
   TRENDS ARE BEING MONITORED FOR POSSIBILITY OF NEW WW SOUTH OF WW
   487.
   
   SCATTERED CONVECTIVE DEVELOPMENT IS EVIDENT IN LATEST VISIBLE
   IMAGERY ALONG FRONT/PRE-FRONTAL WIND SHIFT...AS FAR SOUTH AS THE
   LOWER MISSISSIPPI VALLEY.  MOST VIGOROUS ACTIVITY IS APPROACHING
   INSTABILITY AXIS EAST/SOUTH OF LOUISVILLE AND HOPKINSVILLE
   KY...AIDED BY FORCING ASSOCIATED WITH SHORT WAVE TROUGH ROTATING
   INTO THE LOWER OHIO VALLEY.  AS UPPER TROUGH AXIS TAKES ON
   INCREASING NEGATIVE TILT THIS AFTERNOON...SOUTHERN LIMIT OF STRONGER
   MID-LEVEL FORCING WILL GRADUALLY DEVELOP EAST SOUTHEAST OF
   HOPKINSVILLE...ACROSS THE NASHVILLE AREA INTO EASTERN TENNESSEE BY
   PEAK AFTERNOON HEATING.
   
   WITH MODERATE TO STRONG VERTICAL SHEAR CONTRIBUTING TO ORGANIZED
   CONVECTIVE DEVELOPMENT...SLOW INTENSIFICATION OF SQUALL LINE WILL
   CONTINUE.  SOME HAIL IS POSSIBLE IN STRONGER CELLS...BUT PRIMARY
   THREAT WILL BE POTENTIALLY DAMAGING WINDS ALONG GUST FRONT AS IT
   PROGRESSES IN WARM...RELATIVELY DEEP MIXED BOUNDARY LAYER EAST OF
   MOIST AXIS.
   
   ..KERR.. 06/08/2003
   
   
   ATTN...WFO...RLX...MRX...JKL...ILN...LMK...OHX...
   
   38068546 37338610 36668660 36218706 35828646 35128607
   35528461 36168408 36888335 37688283 38348269 38398433