MESOSCALE DISCUSSION 2163
   NWS STORM PREDICTION CENTER NORMAN OK
   0824 PM CDT THU OCT 29 2009
   
   AREAS AFFECTED...NRN AR
   
   CONCERNING...TORNADO WATCH 784...
   
   VALID 300124Z - 300230Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 784 CONTINUES.
   
   THE SEVERE THREAT IN NRN AR HAS BECOME INCREASINGLY MARGINAL THIS
   EVENING. AS RESULT...WW 784 MAY NEED TO BE CANCELED EARLY.
   
   ALTHOUGH THE VERTICAL SHEAR REMAINS QUITE STRONG ACROSS NRN
   AR...OBJECTIVE ANALYSIS SUGGEST THE THERMODYNAMIC ENVIRONMENT IS
   RAPIDLY BECOMING LESS FAVORABLE FOR SEVERE STORMS. THE WSR-88D VWP
   AT LITTLE ROCK SHOWS 40 TO 50 KT OF FLOW AT 1 KM SUGGESTING AN
   ISOLATED DAMAGING WIND GUST WILL REMAIN POSSIBLE. HOWEVER...THE
   OVERALL SEVERE THREAT SHOULD CONTINUE TO DIMINISH ACROSS THE WATCH
   AREA.
   
   ..BROYLES.. 10/30/2009
   
   
   ATTN...WFO...PAH...MEG...LZK...TSA...
   
   LAT...LON   34589142 34619166 34909167 34969179 35059179 35079208
               34939224 34979258 35099254 35109303 35279323 35199325
               35179355 35099374 34999376 35059412 35609407 35699397
               36489391 36489079 36299074 36189081 35919092 35889105
               34999102 34969125 34859136 34589142