MESOSCALE DISCUSSION 0782
   NWS STORM PREDICTION CENTER NORMAN OK
   0216 AM CDT SAT MAY 03 2008
   
   AREAS AFFECTED...NE LA...CNTRL MS
   
   CONCERNING...TORNADO WATCH 257...
   
   VALID 030716Z - 030815Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 257 CONTINUES.
   
   A SEVERE THREAT WILL CONTINUE ACROSS NE LA AND CNTRL MS OVER THE
   NEXT FEW HOURS. WIND DAMAGE AND HAIL ARE LIKELY WITH THE STRONGER
   CELLS EMBEDDED IN THE LINE. A TORNADO IS POSSIBLE WITH BOWING
   SEGMENTS AND ROTATING CELLS IN THE LINE.
   
   LATEST SFC ANALYSIS SHOWS A 995 MB LOW OVER THE UPPER MIDWEST WITH A
   PREFRONTAL TROUGH EXTENDING SWD ACROSS THE MS VALLEY. A LARGE LINEAR
   MCS IS ONGOING ALONG THE PREFRONTAL TROUGH ALONG THE AXIS OF A 40 TO
   50 KT LOW-LEVEL JET. THE LATEST RUC DATA SUGGESTS MODERATE
   INSTABILITY REMAINS IN PLACE ACROSS THE SRN HALF OF WW 257 AND THIS
   SHOULD KEEP THE LINE SUSTAINED EWD ACROSS CNTRL MS OVER THE NEXT 2
   TO 4 HOURS. THE 88D-VWP IN JACKSON MS CURRENTLY SHOWS ABOUT 50 KT OF
   FLOW AT 1 KM WITH PRIMARILY UNIDIRECTIONAL LOW-LEVEL WINDS
   SUGGESTING A WIND DAMAGE THREAT WILL CONTINUE AS THE LINE MOVES EWD
   LATE TONIGHT. THE LOW-LEVEL SHEAR WILL ALSO SUPPORT AN ISOLATED
   TORNADO THREAT FOR A FEW MORE HOURS.
   
   ..BROYLES.. 05/03/2008
   
   
   ATTN...WFO...OHX...BMX...HUN...MEG...JAN...LIX...LZK...LCH...SHV...
   
   30689172 30599363 31479396 32409320 34829000 35628649
   32198866 31319030