MESOSCALE DISCUSSION 0913
   NWS STORM PREDICTION CENTER NORMAN OK
   0652 PM CDT MON JUN 01 2009
   
   AREAS AFFECTED...NRN KS...SERN NEB...SRN IA...EXTREME NRN MO
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 319...
   
   VALID 012352Z - 020115Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 319
   CONTINUES.
   
   HIGH CAPE AND RELATIVELY WEAK SHEAR EVENT IS UNDERWAY ACROSS THE
   REGION THIS EVENING.  AREA PROFILERS SUGGEST WEAK TROPOSPHERIC FLOW
   AMIDST MLCAPES 2000-2500 J/KG AND MID-LVL LAPSE RATES IN EXCESS OF
   7-7.5 DEG C PER KM.  MODEST LLVL CONVERGENCE ALONG AN E-W ORIENTED
   FRONT ALONG NRN EDGE OF STRONGER INSTABILITY WAS SUFFICIENT FOR
   RAPID DEVELOPMENT OF VIGOROUS TSTMS.  ANY PARTICULAR STORM UPDRAFT
   HAS TENDED TO BE SHORT-LIVED WITH OUTFLOW GENERATING RATHER RANDOM
   DEVELOPMENT ALONG N AND S FLANKS OF THE FRONT.  SHORT TERM MODELS
   INDICATE THAT A SWLY LLJ OF 25-30 KTS WILL IMPINGE ON THE ACTIVITY
   OVER NERN KS/SERN NEB THROUGH THE EVENING.  THIS WILL FAVOR THE
   REGION FROM THE QUAD-STATE REGION OF NE/KS/IA/MO EWD ALONG THE IA/MO
   BORDER FOR SVRL HOURS OF TRAINING HVY RNFL.  OTHERWISE...LARGE HAIL
   AND DMGG WIND RISKS WILL CONTINUE INTO MID-EVENING... ESPECIALLY
   OVER SRN/WRN PORTIONS OF THE WW.
   
   ..RACY.. 06/01/2009
   
   
   ATTN...WFO...DVN...DMX...EAX...OAX...TOP...GID...
   
   LAT...LON   39959920 41139620 41489177 40529220 39639762 39959920