MESOSCALE DISCUSSION 2097
   NWS STORM PREDICTION CENTER NORMAN OK
   0239 PM CDT FRI OCT 09 2009
   
   AREAS AFFECTED...MIDDLE TN INTO ERN KY
   
   CONCERNING...TORNADO WATCH 764...765...
   
   VALID 091939Z - 092115Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 764...765...CONTINUES.
   
   CONVECTIVE DEVELOPMENT REMAINS RELATIVELY SHALLOW...WITH
   THERMODYNAMIC STRUCTURE ONLY MARGINALLY SUPPORTIVE OF THUNDERSTORM
   ACTIVITY.  BUT...ALONG A SLOW EASTWARD MOVING BOUNDARY...ACTIVITY IS
   BASED NEAR THE SURFACE...WITH LOW-LEVEL SHEAR IN THE PROCESS OF
   SIGNIFICANT STRENGTHENING.  LATEST RUC GUIDANCE INDICATES THAT A 50+
   KT SOUTHWESTERLY 850 MB JET CORE IS NOW NOSING THROUGH MIDDLE
   TENNESSEE...AND LIKELY TO CONTINUE TO DEVELOP NORTHEASTWARD ACROSS
   SOUTHEAST KENTUCKY BY 23-00Z.  SOME WEAKENING IS POSSIBLE...BUT
   MOMENTUM/LOW-LEVEL SHEAR WITH THIS FEATURE WILL REMAIN MORE THAN
   STRONG ENOUGH TO MAINTAIN A RISK FOR DAMAGING WINDS...POSSIBLY
   ISOLATED TORNADOES...THROUGH THE REMAINDER OF THE AFTERNOON.
   
   ..KERR.. 10/09/2009
   
   
   ATTN...WFO...RLX...MRX...JKL...LMK...OHX...HUN...
   
   LAT...LON   35208754 36168658 37458463 38168361 38378294 37598201
               36738278 35538475 34978577 34808718 35208754