SPC MESOSCALE DISCUSSION 1928 FOR ECNTRL CO...NWRN KS...SWRN/SCNTRL
   NEB
   CONCERNING...HEAVY RAINFALL...
   
   VALID 130247Z - 130600Z
   
   HEAVY RAINFALL THAT HAS BEEN PERSISTENT ACROSS RED WILLOW COUNTY
   NEB IS BEGINNING TO BACKBUILD RAPIDLY INTO NWRN KS...AND WILL
   PROBABLY LINK UP WITH TSTMS IN ECNTRL CO SHORTLY.  PRIND THAT THE
   65 MILE WIDE CORRIDOR FROM 35N LHX-GLD-30 SW EAR WILL SEE THE MOST
   INTENSE AND PERSISTENT RAINFALL RATES OF 1-2 INCHES PER HOUR
   THROUGH AT LEAST 06 UTC.
   
   HVL PROFILER SHOWS THAT THE SLY LLJ AROUND 500 M AGL HAS INCREASED
   TO AROUND 40 KTS.  VECTOR METHOD NOW SUGGESTS THAT BACKBUILDING HAS
   BECOME MORE RAPID...WITH UPDRAFTS FORMING SWWD TOWARD THE GLD AREA. 
   IR IMAGERY SHOWS TCU FORMING SWWD TOWARD CURRENT TSTMS OVER ECNTRL
   CO...AND PRIND THAT TSTMS WILL BECOME NUMEROUS OVER THE ENTIRE AREA
   BETWEEN 03-04 UTC.  UNTIL THE MIDLEVEL SHORTWAVE TROUGH MIGRATES
   THROUGH THE AREA...THERE WILL BE A 2-4 HOUR PERIOD OF PERSISTENT
   TRAINING HEAVY RAINFALL ACROSS ECNTRL CO-NWRN KS INTO SCNTRL NEB.
   
   ..RACY.. 09/13/02