MESOSCALE DISCUSSION 0814
   NWS STORM PREDICTION CENTER NORMAN OK
   0447 PM CDT WED MAY 07 2008
   
   AREAS AFFECTED...SERN OK/NERN TX/WRN AND CENTRAL AR/NWRN LA
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 072147Z - 072315Z
   
   CONVECTION CONTINUES TO INCREASE ACROSS OK AND N TX...WITH THREAT
   FORECAST TO INCREASE EWD WITH TIME INTO AR/NWRN LA.  NEW WW WILL
   LIKELY BE NEEDED OVER THE NEXT 1-2 HOURS.
   
   BROKEN LINE OF SHOWERS AND STORMS CONTINUES MOVING EWD ACROSS FAR
   SERN OK AND INTO SWRN AR/NERN TX...THOUGH CAPPING STILL APPEARS TO
   PERSIST AHEAD OF THE ONGOING CONVECTION PER LATEST OBJECTIVE
   ANALYSES.  HOWEVER...AS UPPER LOW NOW OVER WRN OK CONTINUES MOVING
   SLOWLY EWD...EXPECT CONTINUED EROSION OF THE CAP...FACILITATING AN
   EWD INCREASE IN CONVECTIVE COVERAGE/INTENSITY.
   
   AS STORMS DEVELOP EWD...INTENSITY WILL BE AIDED BY DEEP-LAYER WIND
   FIELD STRONGLY SUPPORTIVE OF SUPERCELLS.  ALONG WITH THREATS FOR
   LARGE HAIL AND LOCALLY-DAMAGING WINDS...DEGREE OF LOW-LEVEL SHEAR --
   AIDED BY SSELY BOUNDARY-LAYER FLOW -- SUGGESTS A POTENTIAL FOR
   ISOLATED TORNADOES.
   
   ..GOSS.. 05/07/2008
   
   
   ATTN...WFO...JAN...LZK...LCH...SHV...TSA...HGX...FWD...
   
   35469475 35499292 35189201 34069162 32689216 31369361
   31019462 30989573 32869509 35239569