MESOSCALE DISCUSSION 0212
   NWS STORM PREDICTION CENTER NORMAN OK
   0628 AM CST WED MAR 09 2011
   
   AREAS AFFECTED...SE LA...SRN MS...SW AL
   
   CONCERNING...TORNADO WATCH 45...
   
   VALID 091228Z - 091400Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 45 CONTINUES.
   
   THE TORNADO AND WIND DAMAGE THREAT ACROSS WW 45 WILL CONTINUE TO
   GRADUALLY MOVE EWD INTO FAR SE LA...FAR SRN MS...SRN AL AND THE WRN
   FL PANHANDLE. A NEW WW WILL BE NEEDED TO REPLACE WW 45 BEFORE THE
   14Z EXPIRATION.
   
   A CLUSTER OF TORNADIC SUPERCELLS IS ONGOING ACROSS SE LA AND SRN MS
   LOCATED ON THE SWRN END OF A LINEAR MCS EXTENDING NEWD INTO CNTRL
   AL. THE STORMS ARE BEING SUPPORTED BY STRONG DEEP LAYER SHEAR AND
   ENHANCED LOW-LEVEL SHEAR PROFILES ASSOCIATED WITH A 55 TO 70 KT
   LOW-LEVEL JET. WSR-88D VWPS IN SRN MS CURRENTLY SHOW 0-3 KM
   HELICITIES IN THE 400 TO 550 M2/S2 RANGE WHICH COMBINED WITH LOW-LCL
   HEIGHTS WILL CONTINUE TO SUPPORT TORNADO DEVELOPMENT. A STRONG
   TORNADO COULD OCCUR WITH THE MORE DOMINANT SUPERCELL STORMS. WIND
   DAMAGE WILL ALSO BE POSSIBLE WITH SUPERCELLS AND WITH THE
   FASTER-MOVING BOWING LINE-SEGMENTS ESPECIALLY AS THE MORE DISCRETE
   STORMS CONGEAL INTO THE LINEAR MCS OVER THE NEXT FEW HOURS. THE
   STRONGER INSTABILITY IS CURRENTLY LOCATED ACROSS SRN MS AND FAR SRN
   AL SUGGESTING THE GREATEST SEVERE THREAT WILL REMAIN ACROSS THE SERN
   PART OF THE WATCH.
   
   ..BROYLES.. 03/09/2011
   
   
   ATTN...WFO...BMX...MOB...JAN...LIX...LZK...LCH...SHV...
   
   LAT...LON   30059119 30049148 30029156 30109169 30069186 30059206
               30099215 30069234 30019241 30069257 30019284 30079369
               30519373 31079356 31329365 31589381 31929395 32119408
               32249398 32349380 32209365 32249349 32459340 32459321
               32609318 32609291 32789281 32889267 33079268 33079298
               33429300 33399267 33209217 33409199 33379148 33039143
               33019094 33179087 33119066 32989064 32959043 33029042
               32868999 32888980 32628975 32578893 32278890 32238846
               32328845 32298799 32028809 31848819 31668806 31458791
               30968796 30348811 30418837 29898836 29898846 29388878
               29928935 29748953 29638949 29888993 29859008 29659007
               29439000 29219006 29339007 29539012 29639021 29719034
               29819041 29839061 29869080 29749095 29679108 29779124
               29839137 30059119