MESOSCALE DISCUSSION 0630
   NWS STORM PREDICTION CENTER NORMAN OK
   0306 PM CDT WED APR 27 2011
   
   AREAS AFFECTED...NORTHEAST AR/SOUTHEAST MO/SOUTHERN IL/SOUTHERN
   INDIANA AND WESTERN/CENTRAL PORTIONS OF TN/KY
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 234...
   
   VALID 272006Z - 272100Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 234
   CONTINUES.
   
   SEVERE TSTM WATCH 234 CONTINUES UNTIL 00Z...BUT A REPLACEMENT
   TORNADO WATCH WILL LIKELY BE NEEDED SOON FOR PORTIONS OF THE REGION.
   
   LOW LEVEL MOISTENING/SURFACE BASED DESTABILIZATION HAS BEEN LIMITED
   THUS FAR TO THE NORTH OF AN EARLY DAY MCS ACROSS TN. HOWEVER...AHEAD
   OF THE NORTHEAST ADVANCING SURFACE LOW TOWARD THE CONFLUENCE OF THE
   MS/OH RIVERS...RAPID LOW LEVEL MOISTENING/DESTABILIZATION IS
   ANTICIPATED INTO THE EVENING BENEATH A NORTHEASTWARD ADVANCING MID
   LEVEL DRY SLOT. ACCORDINGLY...SURFACE BASED STORMS CAPABLE OF
   TORNADOES WILL BECOME AN INCREASING CONCERN WITHIN A HIGHLY SHEARED
   ENVIRONMENT.
   
   ..GUYER.. 04/27/2011
   
   
   ATTN...WFO...LMK...OHX...IND...PAH...ILX...MEG...LSX...
   
   LAT...LON   35138928 35489089 37689018 39168636 36548577 35138928