MESOSCALE DISCUSSION 1011
   NWS STORM PREDICTION CENTER NORMAN OK
   0622 PM CDT TUE JUN 09 2009
   
   AREAS AFFECTED...SRN KS...NRN OK...SRN MO...NRN AR
   
   CONCERNING...TORNADO WATCH 357...358...359...
   
   VALID 092322Z - 100015Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH
   357...358...359...CONTINUES.
   
   COMPLEX ARRAY OF BOUNDARIES AND NEW CONVECTIVE DEVELOPMENT IS
   OCCURRING ACROSS SRN KS/NRN OK...WHILE MCS CONTINUES TO EVOLVE OVER
   SRN MO.  NO LESS THAN HALF A DOZEN NEW THUNDERSTORMS HAVE DEVELOPED
   AHEAD OF DRY SURGE FROM NEAR DDC...ARCING SEWD INTO SCNTRL KS...THEN
   SWD ALONG DRYLINE INTO KINGFISHER COUNTY OK.  MOST OF THE STORMS
   SOUTH OF THE STATIONARY FRONT EXHIBIT CONSIDERABLE
   OUTFLOW...ESPECIALLY THE ACTIVITY OVER OK.  OF PARTICULAR NOTE IS
   THE EVOLVING SUPERCELL NEAR DDC ALONG/JUST NORTH OF STATIONARY
   FRONT.  IT APPEARS THUNDERSTORM ACTIVITY WILL CONTINUE TO EXPAND IN
   AREAL COVERAGE OVER THE NEXT FEW HOURS...ESPECIALLY ACROSS SRN KS
   WHERE LOW LEVEL WARM ADVECTION IS EXPECTED TO BE MAXIMIZED.  THIS
   WARM ADVECTION SHOULD ENHANCE NEW DEVELOPMENT INTO BACK SIDE OF MO
   MCS WHICH SHOULD GRADUALLY SAG SWD TO NEAR THE AR BORDER. MESOSCALE
   FEATURES APPEAR MOST FAVORABLE FOR ISOLATED TORNADOES ALONG THE
   FRONTAL ZONE DRAPED ACROSS SRN KS...OTHERWISE LARGE HAIL AND
   DAMAGING WINDS SHOULD BE THE PRIMARY SEVERE THREATS.
   
   ..DARROW.. 06/09/2009
   
   
   ATTN...WFO...PAH...MEG...LSX...LZK...SGF...EAX...TSA...TOP...
   ICT...OUN...DDC...
   
   LAT...LON   38299981 38179570 37139040 36069071 36529474 35879769
               36739814 37480017 38299981