MESOSCALE DISCUSSION 0939
   NWS STORM PREDICTION CENTER NORMAN OK
   0236 PM CDT WED JUN 03 2009
   
   AREAS AFFECTED...PARTS OF CNTRL KY / FAR SRN IN / NRN MIDDLE TN
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 031936Z - 032030Z
   
   SEVERE THREAT WILL PROBABLY INCREASE THIS AFTERNOON OVER PARTS OF
   KENTUCKIANA AND PERHAPS AS FAR S AS N MIDDLE TN WITH THE STRONGER
   STORMS POTENTIALLY BEING CAPABLE OF LARGE HAIL AND ISOLD DMGG WINDS.
    A WW MAY BE NEEDED SOON.
   
   LATEST RADAR MOSAIC SHOWS INTENSIFYING STORMS STRADDLING THE OHIO
   RIVER FROM DAVIDSON COUNTY KY NEWD TO PERRY COUNTY IND.  THESE
   STORMS HAVE DEVELOPED S OF SLOWLY SWD SAGGING FRONTAL BOUNDARY IN
   THE WARM MOIST SECTOR ON SRN FRINGE OF STRONG WLYS.  EXPECTING STORM
   ORGANIZATION TO CONTINUE WITH TIME THE NEXT FEW HOURS.  THERE IS
   UNCERTAINTY ON WHETHER STORMS WILL MAINTAIN A SEVERE THREAT AS THEY
   ENCOUNTER MORE STABLE AIRMASS TO THE E NEAR THE I-75 CORRIDOR
   RESULTANT FROM THIS MORNING/S MCS.  ADEQUATE DEEP LAYER SHEAR
   ACCORDING TO OBJECTIVE ANALYSIS /UP TO 35 KTS 0-6 KM SHEAR/ COUPLED
   WITH A MODERATELY UNSTABLE AIRMASS /2000 J/KG SBCAPE/ WILL LIKELY
   SUPPORT ORGANIZED STORMS IN THE FORM OF CLUSTERS WITH SUPERCELL
   STRUCTURE AT TIMES...WITH LARGE HAIL AND DMGG WINDS POSSIBLE.
   
   ..SMITH.. 06/03/2009
   
   
   ATTN...WFO...JKL...LMK...OHX...PAH...
   
   LAT...LON   37628791 38168691 38498581 38308491 37988443 37398416
               36998430 36188661 36218750 36668804 37628791