MESOSCALE DISCUSSION 0614
   NWS STORM PREDICTION CENTER NORMAN OK
   0433 AM CDT WED APR 27 2011
   
   AREAS AFFECTED...MIDDLE TN THROUGH CNTRL KY
   
   CONCERNING...TORNADO WATCH 224...
   
   VALID 270933Z - 271030Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 224 CONTINUES.
   
   A PORTION OF TORNADO WATCH 224 WILL LIKELY NEED TO BE REPLACED BY
   ANOTHER TORNADO WATCH THAT WILL INCLUDE MIDDLE TN AND POSSIBLY INTO
   A PORTION OF CNTRL KY PRIOR TO 10Z. ANOTHER OPTION IS TO LOCALLY
   EXTEND ERN PORTION OF WW 224. DAMAGING WIND AND ISOLATED TORNADOES
   WILL REMAIN THE PRIMARY THREATS.
   
   EXTENSIVE SQUALL LINE CONTINUES FROM CNTRL KY SSWWD THROUGH MIDDLE
   TN...NWRN AL INTO SRN MS. PORTION OF LINE FROM SRN MIDDLE TN SWD IS
   MOVING MORE RAPIDLY THAN FARTHER NWD THROUGH MIDDLE TN AND KY. A
   STRONG SLY LLJ WILL PERSIST AND SHIFT SLOWLY EWD THROUGH THE TN AND
   OH VALLEYS MAINTAINING FAVORABLE LOW LEVEL HODOGRAPHS FOR EMBEDDED
   QLCS TORNADOES. ATMOSPHERE EAST OF THE LINE IS MARGINALLY UNSTABLE
   ESPECIALLY WITH NWD EXTENT INTO KY...BUT SUFFICIENT FOR A CONTINUED
   SEVERE THREAT GIVEN THE STRONG VERTICAL SHEAR PROFILES.
   
   ..DIAL.. 04/27/2011
   
   
   ATTN...WFO...MRX...JKL...LMK...OHX...HUN...
   
   LAT...LON   35458695 37148587 38088491 37828426 36958474 35918482
               35318573 35458695