MESOSCALE DISCUSSION 0612
   NWS STORM PREDICTION CENTER NORMAN OK
   0156 AM CDT WED APR 27 2011
   
   AREAS AFFECTED...SRN MS THROUGH WCNTRL AND NRN AL
   
   CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY 
   
   VALID 270656Z - 270800Z
   
   SEVERE THREAT EXPECTED TO SPREAD THROUGH SRN MS...CNTRL AND NRN AL
   DURING THE EARLY MORNING. DAMAGING WIND AND ISOLATED TORNADOES WILL
   BE THE MAIN THREATS. A NEW TORNADO WATCH WILL LIKELY BE NEEDED SOON.
   
   
   EXTENSIVE SQUALL LINE FROM MIDDLE TN SWWD THROUGH NRN AND CNTRL MS
   INTO NRN LA IS MOVING EAST AT 40-50 KT. EMBEDDED SUPERCELL AND
   BOWING SEGMENTS CONTINUE TO BE OBSERVED. THE ATMOSPHERE EAST OF THE
   LINE REMAINS MODERATELY UNSTABLE WITH 1000-1500 J/KG MUCAPE. A
   STRONG 60-70 KT LLJ WILL PERSIST ACROSS THE LOWER MS AND TN VALLEY
   DURING THE MORNING WITH VERY LARGE 0-2 KM HODOGRAPHS SUPPORTIVE OF
   LOW LEVEL MESOCYCLONES AND EMBEDDED QLCS TORNADOES IN ADDITION TO
   DAMAGING WIND.
   
   ..DIAL.. 04/27/2011
   
   
   ATTN...WFO...BMX...HUN...MOB...MEG...JAN...
   
   LAT...LON   31509143 32448973 33548838 34798754 34758587 33408656
               31498936 31509143