MESOSCALE DISCUSSION 1982
   NWS STORM PREDICTION CENTER NORMAN OK
   0621 PM CDT THU AUG 12 2004
   
   AREAS AFFECTED...WRN/CNTRL OK AND TX PANHANDLE INTO NORTH TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 747...
   
   VALID 122321Z - 130115Z
   
   DAMAGING WIND GUSTS/LARGE HAIL THREAT CONTINUES ACROSS WW
   747...NAMELY ACROSS TX PANHANDLE AND SW/SCNTRL OK. ADDITIONAL WW
   ISSUANCE SWD INTO N TX IS UNLIKELY.
   
   STORMS WITH HISTORY OF LARGE HAIL/DAMAGING WIND GUSTS WILL CONTINUE
   TO SPREAD SEWD OVER NEXT SEVERAL HOURS. AIRMASS REMAINS UNSTABLE
   /MLCAPE 750-1250 J/KG PER LATEST OBJECTIVE ANALYSIS/ INVOF ONGOING
   TSTMS ALONG AND SOUTH OF I-40 CORRIDOR FROM NEAR AMA TOWARD THE OKC
   METRO AREA. AMBIENT WIND PROFILES /40-45 KTS DEEP LAYER SHEAR PER
   REGIONAL PROFILERS/ WILL REMAIN FAVORABLE FOR ORGANIZED SEVERE
   STORMS/MID LEVEL STORM ROTATION.
   
   FURTHER SOUTH...ALTHOUGH ISOLD SEVERE MAY BE POSSIBLE INVOF RED
   RIVER...PROGRESSIVELY DRIER/STABLE DOWNSTREAM AIRMASS ACROSS N TX
   SUGGESTS ADDITIONAL WW ISSUANCE IS UNLIKELY.
   
   ..GUYER.. 08/12/2004
   
   
   ATTN...WFO...TSA...FWD...OUN...SJT...LUB...AMA...MAF...
   
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