MESOSCALE DISCUSSION 1463
   NWS STORM PREDICTION CENTER NORMAN OK
   0636 PM CDT THU JUL 12 2007
   
   AREAS AFFECTED...SERN WY...SRN NEB AND EXTREME NERN CO
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 513...
   
   VALID 122336Z - 130030Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 513
   CONTINUES.
   
   TSTMS HAVE STABILIZED MUCH OF THE ERN PARTS OF WW 513 EARLY THIS
   EVENING.  VSBL SATL/MESOANALYSIS SHOWS OUTFLOW BOUNDARIES MOVING WWD
   ACROSS NRN LINCOLN...WRN MCPHERSON AND ERN GRANT COUNTY NEB.  A CU
   FIELD STILL EXISTS ALONG WRN PORTION OF THE COLD FRONT WEST OF
   THEDFORD WWD TO NEAR TORRINGTON WY.  LOCATIONS W OF THE OUTFLOW AND
   S OF THE FRONT...ROUGHLY IN AN AREA BOUNDED BY IMPERIAL...
   OGALALLA...SCOTTSBLUFF...TORRINGTON...AND ALLIANCE HAVE THE HIGHEST
   PROBABILITY OF TSTMS FOR A COUPLE MORE HOURS.  ESELY BOUNDARY LAYER
   FLOW BENEATH A VEERING WIND PROFILE TO OVER 30-40 KTS AT H5 WILL
   BOOST VERTICAL SHEAR FOR ORGANIZED STORMS CAPABLE OF LARGE HAIL AND
   DMGG WIND GUSTS.
   
   OTHERWISE...ORGANIZED SEVERE STORMS SOUTH OF LEXINGTON AND FAIRBURY
   WILL CONTINUE SWD INTO WW 514 ACROSS NRN KS.  FARTHER W...EARLY
   TSTMS OVER THE NERN CO PLAINS HAVE STABILIZED MOST OF THAT AREA. 
   HEAVIER CORES WILL CONTINUE SWD INTO ECNTRL CO /WW 514/.
   
   ..RACY.. 07/12/2007
   
   
   ATTN...WFO...OAX...GID...LBF...GLD...BOU...CYS...
   
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