SPC MESOSCALE DISCUSSION 1960 FOR ERN OK/N CNTRL TX/EDWARDS PLATEAU
   CONCERNING...SEVERE THUNDERSTORM WATCH 691...692...
   
   VALID 190747Z - 191000Z
   
   SQUALL LINE CONTINUES TO GRADUALLY WEAKEN AS IT PUSHES EASTWARD. 
   DO NOT ANTICIPATE NEED FOR ADDITIONAL WEATHER WATCHES FOR THE
   REMAINDER OF THE NIGHT. 
   
   LATEST OBJECTIVE ANALYSIS INDICATES THAT AIRMASS AHEAD OF SQUALL
   LINE IS BECOMING INCREASINGLY CAPPED.  DEPTH BETWEEN LCL AND LFC 
   FROM THE OZARKS INTO CENTRAL TEXAS IS BETWEEN 1 AND 1.5 KM...AND
   INSTABILITY ABOVE THE CAP IS MARGINAL AT BEST.  EXPECT CONTINUED
   WEAKENING TREND...THOUGH ISOLATED STRONG/DAMAGING WIND GUSTS WILL
   REMAIN POSSIBLE OVER THE NEXT COUPLE OF HOURS.  
   
   WEATHER WATCH 691 WILL BE ALLOWED TO EXPIRE AT 0900Z.
   
   ..CRAVEN.. 09/19/02