MESOSCALE DISCUSSION 0303
   NWS STORM PREDICTION CENTER NORMAN OK
   0618 PM CDT FRI MAR 27 2009
   
   AREAS AFFECTED...SRN AND CNTRL MS...SE LA
   
   CONCERNING...TORNADO WATCH 80...
   
   VALID 272318Z - 280015Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 80 CONTINUES.
   
   THE SEVERE THREAT WITH TORNADO WATCH 80 CONTINUES AND A FEW COUNTIES
   ARE CURRENTLY BEING ADDED IN SW MS AND SE LA ATTM. TORNADOES...LARGE
   HAIL AND WIND DAMAGE WILL BE POSSIBLE WITH THE STRONGER STORMS
   EMBEDDED IN A MCS MOVING ENEWD INTO SRN AND CNTRL MS EARLY THIS
   EVENING. A TORNADO WATCH WILL LIKELY BE ISSUED BY 00Z ACROSS THE
   REGION.
   
   LATEST SFC ANALYSIS SHOWS A MOIST AXIS EXTENDING NWD ACROSS ERN LA
   WHERE RUC DATA SUGGESTS MODERATE INSTABILITY IS PRESENT WITH SBCAPE
   VALUES IN THE 2000 TO 3000 J/KG RANGE. AN MCS IS LOCATED ALONG THE
   NRN GRADIENT OF THE STRONGER INSTABILITY AND IS LIKELY ASSOCIATED
   WITH A SHORTWAVE TROUGH IN NRN AND CNTRL LA EVIDENT ON WATER VAPOR
   IMAGERY. ALTHOUGH MUCH OF THE MCS SHOULD AFFECT CNTRL MS OVER THE
   NEXT FEW HOURS...THE STRONGER INSTABILITY MAY ENCOURAGE A MORE
   EASTERLY TRACK WITH THE MCS MOVING EWD ACROSS PARTS OF SCNTRL MS AND
   SE LA. THE LATEST WSR-88 VWPS IN SCNTRL MS SHOW 0-1 KM SHEAR VALUES
   AROUND 30 KT SUGGESTING CONDITIONS WILL BE FAVORABLE FOR TORNADOES.
   WIND DAMAGE WILL ALSO BE POSSIBLE WITH FAST MOVING-LINE SEGMENTS
   ESPECIALLY AS LOW-LEVEL FLOW INCREASES THIS EVENING.
   
   ..BROYLES.. 03/27/2009
   
   
   ATTN...WFO...MOB...JAN...LIX...
   
   LAT...LON   32579081 32819034 32958982 32988940 32888901 32508884
               32138898 31828870 31388855 30688878 30199026 30409072
               30989096 31659141 32579081