MESOSCALE DISCUSSION 1041
   NWS STORM PREDICTION CENTER NORMAN OK
   0154 AM CDT SAT MAY 17 2003
   
   AREAS AFFECTED...PORTIONS OF CENTRAL MS
   
   CONCERNING...TORNADO WATCH 399...
   
   VALID 170654Z - 170800Z
   
   PARAMETERS REMAIN FAVORABLE FOR A DAMAGING WIND/ISOLATED TORNADO
   THREAT FOR THE NEXT 1-2 HOURS OVER PORTIONS OF CENTRAL MS...WITHIN
   THE SRN TO ERN SECTIONS OF WW 399.
   
   OBJECTIVE ANALYSES SHOW THE AIR MASS OVER MS IS BEGINNING TO
   STABILIZE...SUGGESTING A GRADUAL WEAKENING TREND IN CONVECTIVE
   INTENSITY SHOULD OCCUR...AS HAS BEEN INDICATED BY REGIONAL RADARS
   DURING THE LAST HOUR.  HOWEVER...A FEW STORMS WILL REMAIN CAPABLE OF
   BECOMING SEVERE...GIVEN 50 KT OF DEEP LAYER SHEAR AND 20-30 KT OF
   SFC-1 KM SHEAR TO SUPPORT STORM ORGANIZATION...AS STORMS MOVE EWD
   INTO MODERATE INSTABILITY.
   
   ..PETERS.. 05/17/2003
   
   
   ATTN...WFO...MEG...JAN...
   
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