MESOSCALE DISCUSSION 1587
   NWS STORM PREDICTION CENTER NORMAN OK
   0632 PM CDT THU JUL 16 2009
   
   AREAS AFFECTED...WESTERN/SOUTHERN AR AND SOUTHEAST OK TO ADJACENT
   ARKLATEX VICINITY
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 589...
   
   VALID 162332Z - 170100Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 589
   CONTINUES.
   
   SEVERE TSTM WATCH 589 CONTINUES UNTIL 03Z...WITH CONTINUED RISK FOR
   DAMAGING WINDS/SEVERE HAIL ALONG WITH LOCALLY HEAVY RAINFALL ACROSS
   THE ARKLATEX VICINITY.
   
   GENERAL WEST-EAST ORIENTED QUASI-LINEAR CONVECTIVE LINE CONTINUES TO
   SETTLE SOUTH-SOUTHEASTWARD FROM NEAR THE OK/TX BORDER INTO SOUTH
   CENTRAL AR EARLY THIS EVENING. WITH A BROAD SURFACE COLD POOL FROM
   FAR EASTERN OK TO CENTRAL AR...UPLIFT ALONG THE GUST FRONT/LEADING
   EDGE OF COLD POOL AND A SOUTHERN-EASTERN PERIPHERAL HOT/MOIST AND
   RATHER UNSTABLE BOUNDARY LAYER WILL CONTINUE TO SUPPORT A CONTINUED
   DAMAGING WIND/SOME HAIL THREAT OVER THE NEXT SEVERAL HOURS. WHILE AN
   ADDITIONAL WATCH DOES NOT APPEAR IMMINENT...THE SEVERE THREAT COULD
   DEVELOP INTO AREAS TO THE SOUTH/SOUTHEAST OF EXISTING WW 589 ACROSS
   THE ARKLATEX VICINITY.
   
   ..GUYER.. 07/16/2009
   
   
   ATTN...WFO...JAN...LZK...SHV...TSA...FWD...OUN...
   
   LAT...LON   34209583 34539439 33999073 32279181 32999556 34209583