MESOSCALE DISCUSSION 1272
   NWS STORM PREDICTION CENTER NORMAN OK
   0207 AM CDT SAT JUN 18 2011
   
   AREAS AFFECTED...KS...WCNTRL TO ERN MO
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 497...
   
   VALID 180707Z - 180800Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 497
   CONTINUES.
   
   AN ISOLATED SEVERE THREAT SHOULD CONTINUE LATE TONIGHT ACROSS KS AND
   WRN MO. THE THREAT IS EXPECTED TO BECOME INCREASINGLY ISOLATED
   ACROSS CNTRL KS BUT MAY CONTINUE EWD INTO CNTRL MO. THE STORMS
   SHOULD HAVE A THREAT FOR WIND DAMAGE AND HAIL AND ADDITIONAL WW
   ISSUANCE OR A WW EXTENSION MAY BECOME NECESSARY.
   
   TWO CLUSTERS OF STRONG TO SEVERE THUNDERSTORMS ARE ONGOING...ONE IN
   CNTRL KS AND THE OTHER NEAR THE KS-MO STATE-LINE. THESE CONVECTIVE
   CLUSTERS ARE LOCATED IN THE COOLER AIR NORTH OF A FRONTAL BOUNDARY
   WITH BOTH ASSOCIATED WITH SEPARATE LOW-LEVEL JET FEATURES. THE ERN
   MOST CLUSTER OF STRONG THUNDERSTORMS IS LOCATED JUST AHEAD OF A
   POCKET OF MODERATE INSTABILITY WHERE MESOANALYSIS SHOWS MLCAPE
   VALUES OF 2000 TO 3000 J/KG IN CNTRL MO. THIS MAY ENABLE THE BOWING
   LINE-SEGMENT TO CONTINUE EWD WITH A WIND DAMAGE THREAT. HAIL WILL
   ALSO BE POSSIBLE WITH THE MORE INTENSE CORES. AS THE MCS
   CONTINUES...EWD A NEW WW MAY BE NECESSARY OVER CNTRL AND ERN MO.
   
   ..BROYLES.. 06/18/2011
   
   
   ATTN...WFO...LSX...SGF...EAX...OAX...TOP...ICT...GID...DDC...
   GLD...
   
   LAT...LON   38079223 37659349 37639779 37929893 38709973 39339977
               39999864 40079790 40169592 39509253 38079223