MESOSCALE DISCUSSION 0713
   NWS STORM PREDICTION CENTER NORMAN OK
   0610 PM CDT SAT MAY 03 2003
   
   AREAS AFFECTED...NWRN AND PORTIONS OF CENTRAL TX/ERN TX PANHANDLE
   AND WRN OK
   
   CONCERNING...TORNADO WATCH 222...
   
   VALID 032310Z - 040015Z
   
   PARAMETERS REMAIN FAVORABLE FOR TORNADIC SUPERCELLS OVER NWRN TX
   INTO SWRN OK.  AN INCREASING THREAT FOR ADDITIONAL STORM DEVELOPMENT
   NWD INTO THE ERN TX PANHANDLE AND WRN OK...AND SWD INTO W CENTRAL TX
   MAY REQUIRE TWO NEW WW IN THE NEXT HOUR.
   
   22Z SURFACE ANALYSIS SHOWS A WARM FRONT EXTENDING FROM FAR NRN TX
   WWD TO JUST SOUTH OF CDS TO CVN WITH SSELY LOW-LEVEL FLOW CONTINUING
   TO ADVECT MOISTURE NWD THROUGH THE SRN PLAINS.	A N-S AXIS OF 4 MB/3
   HR PRESSURE FALLS FROM NWRN TX INTO WRN KS/ERN CO WILL KEEP SURFACE
   WINDS BACKED TO SSELY OVER WRN OK...CONTINUING TO ENHANCE LOW-LEVEL
   SHEAR FOR INCREASED TORNADO POTENTIAL.	REGIONAL RADARS SHOW A
   SPLITTING SUPERCELL OVER NWRN TX WITH ADDITIONAL STORMS DEVELOPING
   NWD NEAR CDS.  
   
   CURRENT RADAR TRENDS AND THE AIR MASS DESTABILIZING NWD INTO THE ERN
   TX PANHANDLE AND W CENTRAL OK MAY REQUIRE A NEW WW TO THE NORTH OF
   WW 222.  ALSO AS THE RIGHT MOVING SUPERCELL OVER STONEWALL COUNTY TX
   CONTINUES TO MOVE ESEWD THROUGH A VERY UNSTABLE AIR MASS...ANOTHER
   WW MAY BE REQUIRED TO THE SOUTH OF WW 222.
   
   ..PETERS.. 05/03/2003
   
   
   ATTN...WFO...FWD...OUN...SJT...LUB...AMA...MAF...
   
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