MESOSCALE DISCUSSION 1960
   NWS STORM PREDICTION CENTER NORMAN OK
   0703 PM CDT FRI AUG 12 2011
   
   AREAS AFFECTED...SRN KS/OK
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 772...773...
   
   VALID 130003Z - 130200Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   772...773...CONTINUES.
   
   A COMPLEX SURFACE PATTERN HAS EVOLVED ACROSS THE REGION DUE TO
   NUMEROUS OUTFLOW BOUNDARIES. ONE LONG LIVED CLUSTER CONTINUES TO
   PROPAGATE SWD ACROSS ERN OK/WRN AR...WITH ANOTHER VERY INTENSE AREA
   OVER S CNTRL KS.
   
   IT IS THE ZONE FROM S CNTRL KS ESEWD ACROSS NRN OK THAT SHOULD HAVE
   THE GREATEST SEVERE THREAT THIS EVENING AS STORMS EVOLVE SEWD OUT OF
   KS/NWRN OK...AND...AS NEW DEVELOPMENT TAKES PLACE IN A SECTOR OF
   UNDISTURBED/UNSTABLE AIR CURRENTLY OVER N CNTRL OK.
   
   THE LOW LEVEL JET IS EXPECTED TO INCREASE TO 20-25 KT THIS EVENING
   WITH THE UPPER TROUGH TO THE NE...WHICH WILL FURTHER ENHANCE THE
   POSSIBILITY OF AN ORGANIZED MCS CAPABLE OF SEVERE WINDS.
   
   ELSEWHERE...THE THREAT APPEARS TO BE DWINDLING ACROSS S CNTRL
   OK...WHERE OUTFLOW HAS RESULTED IN STABILIZATION OF THE AIR MASS.
   
   ..JEWELL.. 08/13/2011
   
   
   ATTN...WFO...TSA...TOP...ICT...OUN...DDC...
   
   LAT...LON   37769848 38189773 38309674 38269620 37779558 37229578
               36869604 36179617 35759653 35739719 35869839 36049920
               36399951 36839886 37769848