MESOSCALE DISCUSSION 1400
   NWS STORM PREDICTION CENTER NORMAN OK
   1019 PM CDT WED JUL 01 2009
   
   AREAS AFFECTED...WRN NEB/NERN CO AND NWRN KS
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 537...
   
   VALID 020319Z - 020415Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 537
   CONTINUES.
   
   WATER VAPOR IMAGERY INDICATED AN IMPULSE/LOW AMPLITUDE SHORTWAVE
   TROUGH CURRENTLY MOVING ESEWD INTO THE NEB PANHANDLE.  REGIONAL
   RADARS INDICATED AN INCREASE IN STRONGER TSTMS ALONG A LINE FROM THE
   NEB PANHANDLE INTO NERN CO.  FORCING FOR ASCENT ATTENDANT TO THE
   SHORTWAVE TROUGH AND UPPER LEVEL DIFFLUENT FLOW REGIME SHOULD
   MAINTAIN THE DEVELOPMENT OF ADDITIONAL TSTMS INTO THE LATE EVENING
   WITHIN THE ONGOING NEB PANHANDLE/NERN CO TSTM CLUSTERS.  
   
   REGIONAL RADAR TRENDS SUGGEST A GENERAL ESE MOVEMENT OF THESE TSTMS
   WITH STRONGEST ACTIVITY LOCATED IN THE NEB PANHANDLE EXITING THE NEB
   PORTION OF WW 537 BETWEEN 05-06Z...AND FARTHER S IN CO...STORMS
   SHOULD EXIT THIS WATCH BY 0330Z.  ALTHOUGH STORMS SHOULD PERSIST
   ESEWD LATE THIS EVENING INTO THE EARLY OVERNIGHT PERIOD...
   STRENGTHENING SURFACE BASED INHIBITION WITH ADDITIONAL BOUNDARY
   LAYER COOLING WILL LIMIT THE THREAT FOR DAMAGING WINDS.  STEEP MID
   LEVEL LAPSE RATES AND EFFECTIVE BULK SHEAR AROUND 35 KT WILL LIKELY
   MAINTAIN A THREAT FOR SOME SEVERE HAIL EVENTS WITH THE STRONGER
   CORES.  IF ACTIVITY INTENSIFIES DURING THE NEXT FEW HOURS...LOCAL
   EXTENSION EWD OF THIS WATCH MAY BE NEEDED BY WFO LBF...OR IF THREAT
   APPEARS POSSIBLE INTO NWRN KS THEN A NEW WW WOULD BE NEEDED.
   
   ..PETERS.. 07/02/2009
   
   
   ATTN...WFO...LBF...UNR...GLD...BOU...CYS...
   
   LAT...LON   39570285 39620361 40000456 40090503 40990488 40930408
               41760314 42340332 43050333 42980009 42110025 41340055
               40730085 39590187 39570285