MESOSCALE DISCUSSION 0286
   NWS STORM PREDICTION CENTER NORMAN OK
   1153 PM CDT THU MAR 26 2009
   
   AREAS AFFECTED...SE LA...FAR SRN MS...FAR SRN AL...FAR WRN FL
   PANHANDLE...
   
   CONCERNING...TORNADO WATCH 72...
   
   VALID 270453Z - 270630Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 72 CONTINUES.
   
   THE SEVERE THREAT WILL LIKELY CONTINUE INTO THE OVERNIGHT PERIOD
   ACROSS SE LA...SRN MS AND SRN AL. A FEW TORNADOES ALONG WITH WIND
   DAMAGE AND HAIL WILL BE POSSIBLE WITH BOWING LINE SEGMENTS AND
   SUPERCELLS. WW 72 MAY NEED TO BE REPLACED OR EXTENDED AFTER 06Z.
   
   SOUTH OF A LARGE MCS...RUC DATA SUGGESTS INSTABILITY HAS WEAKENED
   SOME ACROSS SERN LA AND IN COASTAL AREAS OF MS AND AL WITH MLCAPE
   VALUES BETWEEN 750 AND 1000 J/KG. IN SPITE OF THE WEAKENING
   INSTABILITY...LOW-LEVEL SHEAR PROFILES SHOULD STRENGTHEN AS A JET
   LOW TO MID-LEVEL JET MOVES NWD FROM THE GULF OF MEXICO ACROSS THE MS
   DELTA REGION. THIS ALONG WITH 50 TO 60 KT OF VERTICAL
   SHEAR...EVIDENT ON REGIONAL WSR-88 VWPS...SHOULD CONTINUE TO SUPPORT
   ISOLATED SUPERCELLS AND BOWING LINE-SEGMENTS. A FEW TORNADOES ALONG
   WITH WIND DAMAGE WILL BE POSSIBLE WITH THE THREAT GRADUALLY
   EXPANDING EWD INTO SRN AL AND THE FAR WRN FL PANHANDLE AFTER 06Z.
   
   ..BROYLES.. 03/27/2009
   
   
   ATTN...WFO...MOB...JAN...LIX...LCH...
   
   LAT...LON   30228763 29938927 29368965 29089027 29119111 29459143
               30129113 30619082 30899045 31088975 31198840 31368768
               31238726 30908708 30428709 30228763