MESOSCALE DISCUSSION 1161
   NWS STORM PREDICTION CENTER NORMAN OK
   0329 PM CDT TUE JUN 16 2009
   
   AREAS AFFECTED...CENTRAL AND ERN KY/MIDDLE AND ERN TN/FAR SWRN VA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 432...433...
   
   VALID 162029Z - 162130Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   432...433...CONTINUES.
   
   THREAT FOR DESTRUCTIVE WINDS PERSISTS ACROSS WW 433...WITH GREATEST
   THREAT PERSISTING ALONG NRN TIER OF TN COUNTIES AND SRN TIER OF KY
   COUNTIES.  A LOCAL AREAL EXTENSION OF WW 433 OR A NEW WW MAY BE
   NEEDED AS CURRENT FAST MOVING /AT 45-50 KT/ LINE OF TSTMS EXITS THIS
   WATCH BY 22Z.
   
   EFFECTIVE BULK SHEAR OF 35-50 KT...MODERATE INSTABILITY AND A 50-60
   KT REAR INFLOW JET ARE MAINTAINING THE FAST MOVING BOW ECHO AS IT
   APPROACHES NERN TN/SERN KY.  ALTHOUGH THIS LINE IS CURRENTLY MOVING
   EWD...INSTABILITY DIMINISHES GREATLY WITH EWD EXTENT INTO SWRN
   VA/NWRN NC...BUT A CORRIDOR OF INSTABILITY EXTENDS SEWD INTO SC. 
   TRENDS WILL BE MONITORED FOR A POTENTIAL SEWD TURN OF THIS BOW AND
   THE NEED FOR A NEW WW.
   
   SEVERE WEATHER THREAT HAS ENDED ACROSS WW 432...AND WILL LIKELY BE
   CANCELLED PRIOR TO SCHEDULED EXPIRATION OF 22Z.
   
   ..PETERS.. 06/16/2009
   
   
   ATTN...WFO...RLX...GSP...MRX...JKL...FFC...LMK...OHX...HUN...
   MEG...
   
   LAT...LON   34958801 35458801 36018645 36818572 37518593 38038596
               38178433 37908262 36938245 35588316 34978482 34958801