MESOSCALE DISCUSSION 1929
   NWS STORM PREDICTION CENTER NORMAN OK
   0236 AM CDT WED AUG 10 2011
   
   AREAS AFFECTED...NORTHWEST AR/FAR SOUTHWEST MO
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 100736Z - 100900Z
   
   PENDING CONVECTIVE TRENDS ACROSS NORTHEAST/EAST-CENTRAL OK...A
   SEVERE WATCH COULD BE NEEDED WITHIN THE HOUR FOR PORTIONS OF
   NORTHWEST AR/FAR SOUTHWEST MO.
   
   A SEVERE QUASI-LINEAR MCS CONTINUES TO STEADILY PROGRESS EASTWARD
   ACROSS NORTHEAST/EAST-CENTRAL OK OVERNIGHT...WHICH INCLUDES A
   HISTORY OF WIND DAMAGE/MEASURED SEVERE WIND GUSTS IN CENTRAL OK.
   THIS QLCS HAS BECOME INCREASE INCREASING ORGANIZED OVER THE PAST 1-2
   HOURS VIA CELL MERGERS/COLD POOL EXPANSION...WITH A SURFACE PRESSURE
   RISE/FALL COUPLET NOW NOTED GENERALLY NEAR THE I-44 CORRIDOR. WITH
   AID OF A MODEST WARM ADVECTION REGIME AND EASTERLY FLOW IN THE LOW
   LEVELS /PER SURFACE OBS AND WSR-88D VWP DATA FROM TULSA AND FORT
   SMITH/...EXISTING ORGANIZATION/FORWARD MOMENTUM OF THE QLCS MAY
   CONTINUE TO YIELD AT LEAST A MARGINAL/SPORADIC WIND DAMAGE THREAT
   OVERNIGHT INTO PORTIONS OF NORTHWEST AR/FAR SOUTHWEST MO...SUCH THAT
   A WATCH MAY BE NEEDED.
   
   ..GUYER.. 08/10/2011
   
   
   ATTN...WFO...LZK...SGF...TSA...
   
   LAT...LON   36519446 36729347 36539259 35799248 35169294 35119432
               36519446