MESOSCALE DISCUSSION 1400
   NWS STORM PREDICTION CENTER NORMAN OK
   0211 PM CDT SUN JUN 26 2011
   
   AREAS AFFECTED...S-CNTRL/SERN MO INTO NERN AR
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 261911Z - 262015Z
   
   THE THREAT FOR MORE WIDESPREAD DAMAGING WINDS AND HAIL APPEARS TO BE
   INCREASING ACROSS THE DISCUSSION AREA AND A WW MAY BE NECESSARY.
   
   RECENT TRENDS IN SPRINGFIELD MO RADAR DATA INDICATE A NOTABLE
   INCREASE IN STORM INTENSITY OVER WRIGHT AND DOUGLAS COUNTIES IN
   S-CNTRL MO.  DOWNSTREAM AIR MASS IS VERY MOIST AND QUITE UNSTABLE
   WITH MLCAPE VALUES NOW ESTIMATED TO BE APPROACHING 4000-4500 J/KG. 
   MOREOVER...LATEST SGF VAD DATA SHOW 4-6 KM AGL FLOW FIELD HAS
   INCREASED TO 40-45 KT WHICH WOULD SUPPORT FORWARD-PROPAGATION OF
   INTENSIFYING STORM CLUSTER.  AS SUCH...A WW MAY BE REQUIRED.
   
   ..MEAD.. 06/26/2011
   
   
   ATTN...WFO...PAH...MEG...LSX...LZK...SGF...
   
   LAT...LON   37179230 37499210 37589099 37399042 36898976 36068966
               35999060 36379126 36609179 37179230