MESOSCALE DISCUSSION 1056
   NWS STORM PREDICTION CENTER NORMAN OK
   0830 AM CDT FRI JUN 08 2007
   
   AREAS AFFECTED...MUCH OF TN AND KY AND SOUTHERN INDIANA/SOUTHERN OH
   
   CONCERNING...SEVERE POTENTIAL...WATCH NEEDED SOON 
   
   VALID 081330Z - 081500Z
   
   ENVIRONMENTAL CONDITIONS HAVE BECOME FAVORABLE FOR SEVERE STORMS AND
   A WATCH ISSUANCE WILL BE COORDINATED BETWEEN THE SPC AND THE
   AFFECTED LOCAL NATIONAL WEATHER SERVICE OFFICES SHORTLY.
   
   A SEVERE TSTM WATCH WILL BE ISSUED SOON FOR MUCH OF KY AND TN AND
   SOUTHERN INDIANA/OH...WITH A PRIMARY RISK OF DAMAGING WINDS AND
   LARGE HAIL.
   
   QUASI-LINEAR MESOSCALE CONVECTIVE SYSTEM CONTINUES TO QUICKLY
   ADVANCE EASTWARD THIS MORNING AT 40+ KT...WITH THE LEADING EDGE
   EXTENDING FROM NEAR THE VINCENNES/EVANSVILLE INDIANA AREAS TO
   PADUCAH KY...INTO THE MO BOOTHEEL AS OF 1330Z. AHEAD OF THIS
   MCS...VISIBLE SATELLITE IMAGERY REVEALS AMPLE INSOLATION...WITH
   TEMPERATURES ALREADY IN THE LOWER 80S EARLY THIS MORNING AND SURFACE
   DEWPOINTS CLIMBING THROUGH THE UPPER 60S/LOWER 70S. MODIFIED 12Z
   OBSERVED RAOB FROM NASHVILLE REVEALS POTENTIAL FOR 2500-3000 J/KG
   MLCAPE...WITH INCREASINGLY STRONG WIND FIELDS FAVORING DAMAGING WIND
   GUSTS...IN ADDITION TO LARGE HAIL.
   
   ..GUYER.. 06/08/2007
   
   
   ATTN...WFO...MRX...JKL...ILN...LMK...OHX...IND...HUN...PAH...MEG...
   
   36338966 37268805 39218677 39878415 38788350 37138419
   36218463 35548557 35178750 35088877 35308955 35688974