MESOSCALE DISCUSSION 0595
   NWS STORM PREDICTION CENTER NORMAN OK
   0452 PM CDT THU APR 26 2012
   
   AREAS AFFECTED...WRN TN
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 262152Z - 262315Z
   
   ISOLATED LARGE HAIL AND DAMAGING WIND GUSTS WILL BE POSSIBLE OVER
   WRN TN DURING THE REMAINDER OF THE AFTERNOON. CONVECTIVE TRENDS WILL
   CONTINUE TO BE MONITORED FOR A POSSIBLE WW.
   
   SURFACE OBSERVATIONS AND VISIBLE SATELLITE IMAGERY AT 2130Z SHOW
   THAT A NARROW WEDGE OF STRONGER HEATING/BOUNDARY LAYER
   DESTABILIZATION HAS DEVELOPED BETWEEN A COLD FRONT ENTERING WRN TN
   AND A ZONE OF STRATUS OVER NRN MS/AL AND SRN PORTIONS OF TN. WITH
   SURFACE TEMPERATURES IN THE LOW TO MID 80S...DEWPOINTS IN THE MID
   60S...AND STEEP MIDLEVEL LAPSE RATES PRESENT ACROSS THE
   REGION...MLCAPE VALUES ARE NEAR 2500 J/KG. THIS ENVIRONMENT IS
   SUPPORTING ISOLATED THUNDERSTORM DEVELOPMENT ALONG THE FRONT. THESE
   STORMS WILL HAVE THE POTENTIAL TO EVOLVE INTO ORGANIZED MULTICELLS
   OR SUPERCELLS GIVEN THE PRESENCE OF LOW-LEVEL WLYS VEERING TO NWLY
   ALOFT...WHICH IS AIDING IN EFFECTIVE BULK WIND DIFFERENCE VALUES
   FROM 30-40 KT. THUS...A THREAT FOR LARGE HAIL AND DAMAGING WIND
   GUSTS WILL EXIST THROUGH THE REMAINDER OF THE AFTERNOON.
   HOWEVER...GIVEN THE PRESENCE OF STRATUS AND A MORE STABLE BOUNDARY
   LAYER S OF STORM INITIATION...STORM PERSISTENCE MAY BE
   COMPROMISED...WHICH COULD LIMIT THE NEED FOR A WW. TRENDS WILL
   CONTINUE TO BE MONITORED.
   
   ..GARNER.. 04/26/2012
   
   
   ATTN...WFO...OHX...MEG...
   
   LAT...LON   35868968 36398818 36148724 35578693 35108858 35258976
               35868968