MESOSCALE DISCUSSION 0572
   NWS STORM PREDICTION CENTER NORMAN OK
   0148 PM CDT MON APR 25 2011
   
   AREAS AFFECTED...PORTIONS OF WRN/MIDDLE TN
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 251848Z - 252015Z
   
   PORTIONS OF WRN/MIDDLE TN MAY REQUIRE AN ADDITIONAL SEVERE
   THUNDERSTORM WATCH DOWNSTREAM FROM WW 200 IF MCS MAINTAINS ITS
   CURRENT INTENSITY. CONVECTIVE TRENDS WILL CONTINUE TO BE MONITORED.
   
   AT 1830Z...MCS WITH EMBEDDED BOWS WAS MOVING E ACROSS FAR WRN TN AT
   AROUND 40 KT. DOWNSTREAM AIRMASS IS CHARACTERIZED BY TEMPERATURES
   WARMING INTO THE UPPER 70S/LOW 80S...WITH DEWPOINTS IN THE MID 60S
   OVER WRN TN DECREASING INTO THE LOW 60S/UPPER 50S OVER MIDDLE TN.
   THESE CONDITIONS ARE SUPPORTING INCREASING INSTABILITY WITH MLCAPE
   VALUES APPROACHING 1500 J/KG. GIVEN THIS DESTABILIZATION...MCS OVER
   WRN TN MAY MAINTAIN CURRENT INTENSITY AS IT APPROACHES MIDDLE TN. AN
   ADDITIONAL WW MAY BECOME NECESSARY DURING THE NEXT HOUR OR TWO.
   
   ..GARNER.. 04/25/2011
   
   
   ATTN...WFO...OHX...HUN...PAH...MEG...
   
   LAT...LON   36488830 36668723 36478632 35438627 34998712 35208844
               35708860 36488830