MESOSCALE DISCUSSION 0761
   NWS STORM PREDICTION CENTER NORMAN OK
   0600 PM CDT TUE MAY 21 2013
   
   AREAS AFFECTED...ERN KY / WRN WV / FAR SERN OH / WRN VA / ERN TN
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 206...
   
   VALID 212300Z - 220000Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 206
   CONTINUES.
   
   SUMMARY...THE THREAT FOR MAINLY DAMAGING WINDS CONTINUES ACROSS
   REMAINING VALID PORTION OF WATCH AREA THIS EVENING.
   
   DISCUSSION...AS OF 2240Z...REGIONAL RADAR IMAGERY INDICATED THE
   LEADING EDGE OF AN EWD-MOVING MCS FROM NEAR THE OH RIVER 40 SE
   LUK-20 E JKL-30 E OF TYS.  THE KY SEGMENT OF THIS CONVECTIVE SYSTEM
   HAS REMAINED MOST PROGRESSIVE /AROUND 30 KT/ WHERE AN EXTENSIVE
   TRAILING STRATIFORM REGION AND ASSOCIATED 40-45 KT REAR-INFLOW JET
   /RIJ --SEE CURRENT JKL VAD/ HAVE DEVELOPED.  UPSLOPE FLOW COMBINED
   WITH RIJ-ENHANCED CONVERGENCE ALONG THE LEADING EDGE OF THE SYSTEM
   COLD POOL SHOULD CONTINUE TO PROMOTE FORWARD PROPAGATION --AND AN
   ASSOCIATED DAMAGING WIND THREAT-- INTO WRN WV BY 22/00Z.
   
   FARTHER S INTO ERN TN...THE MCS IS MUCH MORE FRAGMENTED AND NOT AS
   PROGRESSIVE.  NONETHELESS...ISOLATED OCCURRENCES OF LOCALLY DAMAGING
   WINDS WILL BE POSSIBLE OWING LARGELY TO CELL MERGERS SUBSEQUENT
   WATER LOADING EFFECTS.
   
   ..MEAD.. 05/21/2013
   
   
   ATTN...WFO...RNK...RLX...GSP...MRX...JKL...ILN...LMK...
   
   LAT...LON   35348421 36548384 36978377 37818382 38698409 38928382
               38848288 38728239 38158121 37688094 37318158 36838191
               36388207 35828303 35258325 34998349 35018392 35348421