MESOSCALE DISCUSSION 2192
   NWS STORM PREDICTION CENTER NORMAN OK
   0758 PM CDT SUN SEP 18 2011
   
   AREAS AFFECTED...PORTIONS OF N AND CNTRL TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 853...
   
   VALID 190058Z - 190200Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 853
   CONTINUES.
   
   WITH EXCEPTION TO NRN PORTIONS OF THE WW NEAR THE RED
   RIVER...CONVECTION HAS LARGELY STRUGGLED TO INTENSIFY AND INCREASE
   IN AREAL COVERAGE ACROSS MUCH OF THE WW AREA. THIS IS PROBABLY DUE
   TO RATHER WEAK LOW-LEVEL CONVERGENCE ALONG A SLOW-MOVING SFC COLD
   FRONT...AS WELL AS THE ABSENCE OF ANY SIGNIFICANT FORCED ASCENT
   ALOFT AS PRIMARY UPPER WAVE REMAINS SITUATED ACROSS ERN OK. LATEST
   RADAR IMAGERY CONTINUES TO INDICATE STRONGEST CLUSTER OF TSTMS IS
   LOCATED N/E OF THE DFW METROPLEX AND IS PROGRESSING ESEWD...WITH
   CONTINUED POTENTIAL FOR DMGG WINDS AND LARGE HAIL. FARTHER
   S...ISOLATED TSTMS ARE PERSISTING WITHIN AN UNSTABLE AIR MASS...BUT
   WITH THE LOSS OF DIABATIC HEATING THE ENVIRONMENT SHOULD GRADUALLY
   BECOME LESS FAVORABLE FOR SUSTAINING A THREAT FOR DMGG WINDS/LARGE
   HAIL. COLD FRONT IS NOW SITUATED FROM NEAR 6R6-10 W BWD-20 N FTW
   /PER 00Z SUBJECTIVE ANALYSIS/...WITH DRIER/MORE STABLE AIR SLOWLY
   ADVECTING SEWD IN ITS WAKE.
   
   ..ROGERS.. 09/19/2011
   
   
   ATTN...WFO...SHV...FWD...OUN...EWX...SJT...
   
   LAT...LON   30260105 33829714 33829507 30259928 30260105