MESOSCALE DISCUSSION 0844
   NWS STORM PREDICTION CENTER NORMAN OK
   1055 PM CDT FRI MAY 15 2009
   
   AREAS AFFECTED...PARTS OF SWRN MO AND SWWD INTO SWRN OK
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 310...
   
   VALID 160355Z - 160600Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 310
   CONTINUES.
   
   LIMITED SEVERE THREAT CONTINUES TO SLOWLY DECREASE ACROSS OK AND
   ADJACENT SWRN MO.
   
   WELL-ORGANIZED BAND OF STORMS CONTINUES MOVING SEWD ACROSS WW
   310...AND IS APPROACHING THE ERN FRINGE OF THE WATCH ATTM.  A FEW
   STRONGER/EMBEDDED STORMS PERSIST...WITH LOCALLY GUSTY/DAMAGING WINDS
   AND HAIL STILL POSSIBLE -- PARTICULARLY OVER CENTRAL OK WHERE TWO
   ARCING SEGMENTS OF THE LINE AND THEIR ASSOCIATED OUTFLOW BOUNDARIES
   INTERSECT.  
   
   GIVEN THE DEGREE OF INSTABILITY AHEAD OF THE CONVECTION...A
   CONTINUATION OF THE BAND OF STORMS IS LIKELY FOR SEVERAL HOURS. 
   HOWEVER...COOL OUTFLOW IS NOW RUNNING WELL AHEAD OF THE ONGOING
   STORMS...AND THUS CONVECTION IS BECOMING INCREASINGLY-ELEVATED ABOVE
   THE COLD POOL/OUTFLOW WITH TIME.  THEREFORE...EXPECT A SLOW DECREASE
   IN OVERALL SEVERE POTENTIAL TO CONTINUE -- POSSIBLY NEGATING THE
   NEED FOR AN ADDITIONAL/DOWNSTREAM WW.
   
   ..GOSS.. 05/16/2009
   
   
   ATTN...WFO...SGF...TSA...OUN...LUB...
   
   LAT...LON   34100016 34869791 35599768 35839630 37249418 37309250
               34179853 34100016