MESOSCALE DISCUSSION 0266
   NWS STORM PREDICTION CENTER NORMAN OK
   0832 PM CDT WED MAR 25 2009
   
   AREAS AFFECTED...LA AND CNTRL MS
   
   CONCERNING...TORNADO WATCH 64...
   
   VALID 260132Z - 260300Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 64 CONTINUES.
   
   THE TORNADO...WIND DAMAGE AND HAIL THREAT SHOULD CONTINUE THROUGH
   LATE THIS EVENING INTO THE OVERNIGHT PERIOD EWD ACROSS MUCH OF LA
   AND CNTRL MS. A TORNADO WATCH WILL BE NEEDED EAST OF WW 63 BY 02Z TO
   0230Z.
   
   SFC ANALYSIS SHOWS A FRONTAL BOUNDARY MOVING SLOWLY NWD ACROSS THE
   MCD AREA WITH LOWER TO MID 60S F DEWPOINTS SOUTH OF THE BOUNDARY.
   THE MOIST AIRMASS IS CONTRIBUTING TO A MODERATELY UNSTABLE AIRMASS
   AND THIS WILL FUEL A LARGE-SCALE BOW ECHO EWD INTO CNTRL MS BY
   MIDNIGHT. STRENGTHENING LOW-LEVEL FLOW ALONG WITH INCREASING
   LOW-LEVEL MOISTURE SHOULD MAKE WIND DAMAGE LIKELY WITH THE BOW. IN
   ADDITION...SFC TEMPS HAVE DECREASED FROM INTERSTATE 20 SOUTH OVER
   THE LAST FEW HOURS ALLOWING FOR LCL HEIGHTS TO DROP BELOW 500 METERS
   AS INDICATED BY RUC ANALYSIS DATA. THIS COMBINED WITH STRONG
   LOW-LEVEL SHEAR EVIDENT ON THE BRANDON MS WSR-88D VWP SUGGEST A
   TORNADO THREAT WILL CONTINUE. ALTHOUGH TORNADOES WILL BE POSSIBLE
   WITH EMBEDDED CELLS IN THE LINE ITSELF...SUPERCELLS AHEAD OF THE
   LINE WILL ALSO HAVE A POTENTIAL FOR TORNADOES. AN ISOLATED STRONG
   TORNADO REMAINS POSSIBLE ACROSS THE MCD AREA.
   
   ..BROYLES.. 03/26/2009
   
   
   ATTN...WFO...MOB...JAN...LIX...LCH...SHV...
   
   LAT...LON   30409337 30979360 31609347 31999301 32499168 32858983
               32648905 32248886 31718883 31338920 31088998 30519227
               30409337