MESOSCALE DISCUSSION 0287
   NWS STORM PREDICTION CENTER NORMAN OK
   0933 PM CDT SAT MAR 26 2011
   
   AREAS AFFECTED...SERN AR...NERN LA AND PARTS OF NRN AND CENTRAL MS
   
   CONCERNING...TORNADO WATCH 63...
   
   VALID 270233Z - 270300Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 63 CONTINUES.
   
   WW 63 WILL BE ALLOWED TO EXPIRE AT 03Z.
   
   SINCE 02Z...REGIONAL RADAR IMAGERY INDICATED A GRADUAL
   DIMINISHING/WEAKENING TREND WITH THE ELEVATED TSTMS ACROSS NORTH
   CENTRAL MS TO THE NORTH OF THE COLD FRONT.  THIS TREND MAY BE
   INDICATIVE OF GREATER FORCING FOR ASCENT AND ATTENDANT STRONGER
   MIDLEVEL WINDS TRANSLATING EWD WITH THE PROGRESSIVE TN/OH VALLEYS
   SHORTWAVE TROUGH.  MEANWHILE...FARTHER SW ACROSS EXTREME SRN AR AND
   NRN LA...THE CONVECTION OVER THIS REGION HAS DIMINISHED
   SUBSTANTIALLY.  OBJECTIVE ANALYSES SHOWED A REDUCTION IN INSTABILITY
   AND WEAKENING DEEP LAYER SHEAR FROM N-S ACROSS THIS WATCH.  IN
   ADDITION...GIVEN TIME OF DAY...SURFACE BASED INHIBITION WILL
   CONTINUE TO INCREASE...THUS REDUCING THE POTENTIAL FOR SURFACE BASED
   STORMS.
   
   ALTHOUGH A COUPLE OF STORMS WILL HAVE THE POTENTIAL TO BE SEVERE YET
   THIS EVENING...OVERALL TRENDS SUGGEST WW 63 WILL BE ALLOWED TO
   EXPIRE AS SCHEDULED AT 03Z.
   
   ..PETERS.. 03/27/2011
   
   
   ATTN...WFO...BMX...MEG...JAN...LZK...SHV...
   
   LAT...LON   34268812 32648843 32279065 31959173 32049240 32219270
               33049283 33279290 33169214 33489177 33909047 34238877
               34268812