MESOSCALE DISCUSSION 0305
   NWS STORM PREDICTION CENTER NORMAN OK
   0821 PM CDT FRI MAR 27 2009
   
   AREAS AFFECTED...FAR SE LA...SRN MS...FAR SRN AL...FAR WRN FL
   PANHANDLE
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 280121Z - 280245Z
   
   THE SEVERE THREAT SHOULD GRADUALLY INCREASE ACROSS FAR SE LA...SRN
   MS...FAR SRN AL AND THE FAR WRN FL PANHANDLE THIS EVENING. HAIL AND
   ISOLATED WIND DAMAGE WILL BE POSSIBLE AS AN MCS MOVES INTO THE AREA
   FROM THE WEST. A WW MAY BECOME NECESSARY ESPECIALLY LATE THIS
   EVENING AS LOW-LEVEL FLOW AND INSTABILITY START TO INCREASE ACROSS
   THE MCD AREA.
   
   LATEST RUC DATA SHOWS A BROAD ZONE OF INCREASED LOW-LEVEL FLOW
   EXTENDING EWD ALONG THE IMMEDIATE COASTS OF LA...MS...AL AND WRN FL
   PANHANDLE. A LARGE AREA OF CONVECTION IS LOCATED IN THIS AREA OF
   ENHANCED ISENTROPIC LIFT. WATER VAPOR IMAGERY CURRENTLY SHOWS A LEAD
   SHORTWAVE TROUGH NEAR THE MS RIVER AND THIS FEATURE WILL MOVE EWD
   INTO THE MCD AREA FROM THE WEST OVER THE NEXT 2 TO 4 HOURS. STRONG
   VERTICAL SHEAR IS ALREADY IN PLACE WHICH COMBINED WITH INCREASING
   INSTABILITY AND STRENGTHENING LOW-LEVEL FLOW WILL HELP TO MAINTAIN
   INTENSITY OF THE STORMS CURRENTLY IN SRN MS. HAIL AND ISOLATED WIND
   DAMAGE WILL BE POSSIBLE THIS EVENING INTO THE OVERNIGHT PERIOD AS A
   SECOND SHORTWAVE TROUGH APPROACHES THE AREA.
   
   ..BROYLES.. 03/28/2009
   
   
   ATTN...WFO...TAE...MOB...JAN...LIX...
   
   LAT...LON   30198746 30028849 29778930 29778996 30439034 31059005
               31558896 31348707 30958628 30428637 30198746