SPC MESOSCALE DISCUSSION 0334 FOR PORTIONS OF CENTRAL AND NRN OK
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL...
   
   VALID 081703Z - 082000Z
   
   ISOLATED SEVERE HAIL WILL BE POSSIBLE THROUGH THE MID AFTERNOON.
   HOWEVER...A WW IS NOT ANTICIPATED DUE TO MARGINAL NATURE/LIMITED
   COVERAGE OF THREAT.
   
   LATEST SATELLITE AND RADAR IMAGERY INDICATED INCREASING TRENDS IN
   THE CONVECTIVE ACTIVITY ACROSS NRN OK IN A REGION OF LOW LEVEL
   FRONTOGENESIS. 12Z SOUNDING FROM OUN INDICATED 7.5 TO 8 DEG C 850-
   500 MB LAPSE RATES AND AROUND 700 J/KG MUCAPE. AS BOUNDARY LAYER
   CONTINUES TO SLOWLY DESTABILIZE...EXPECT CONVECTION OVER NRN OK TO
   GRADUALLY INTENSIFY. AS THE MAIN VORT CENTER MOVES SEWD THROUGH THE
   AFTERNOON TOWARDS REGION OF MID LEVEL HEIGHT FALLS OVER NERN
   TX...ADDITIONAL CONVECTION MAY DEVELOP FARTHER SWD INTO PORTIONS OF
   CENTRAL OK. COMBINATION OF MODEST INSTABILITY/STEEP LAPSE RATES AND
   LOW WET BULB ZERO HEIGHTS WILL FAVOR ISOLATED SEVERE HAIL THREAT
   WITH THE STRONGEST STORMS. STORM MOTIONS SHOULD GENERALLY BE ESEWD
   AROUND 10 KTS. 
   
   ..CROSBIE.. 04/08/02