MESOSCALE DISCUSSION 0836
   NWS STORM PREDICTION CENTER NORMAN OK
   1151 PM CDT WED MAY 07 2003
   
   AREAS AFFECTED...SRN OK/NRN TX
   
   CONCERNING...TORNADO WATCH 293...
   
   VALID 080451Z - 080545Z
   
   PARAMETERS REMAIN FAVORABLE FOR ISOLATED TORNADOES AND LARGE HAIL
   OVER SRN OK AND NRN TX FOR THE NEXT SEVERAL HOURS.
   
   04Z SURFACE ANALYSIS SHOWS A WARM FRONT ALONG OR JUST NORTH OF THE
   RED RIVER VALLEY.  REGIONAL RADARS SHOW THREE SUPERCELLS OVER SWRN
   OK INTO NRN TX MOVING TO THE EAST.  50 KT SLY LLJ OVER CENTRAL TX
   INTO WRN OK WILL CONTINUE TO ADVECT RICH MOISTURE NWD OVERNIGHT WITH
   THE SURFACE WARM FRONT EXPECTED TO LIFT NWD THROUGH SRN OK.  THE AIR
   MASS WILL CONTINUE TO DESTABILIZE NWD ALLOWING ADDITIONAL STORMS TO
   DEVELOP.  00Z ETA SUGGESTS THE LLJ AXIS WILL MOVE EWD INTO CENTRAL
   OK OVERNIGHT...WHICH SHOULD ALLOW STORMS TO SPREAD ENEWD ACROSS OK. 
   TORNADO THREAT WILL CONTINUE OVER SRN OK/NRN TX ALONG THE SURFACE
   WARM FRONT...WHERE LOW-LEVEL SHEAR WILL BE ENHANCED.
   
   ..PETERS.. 05/08/2003
   
   
   ATTN...WFO...FWD...OUN...
   
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