MESOSCALE DISCUSSION 1767
   NWS STORM PREDICTION CENTER NORMAN OK
   0634 PM CDT THU JUL 22 2004
   
   AREAS AFFECTED...ERN CO AND EXTREME WRN KS AND DUNDY COUNTY NEB
   
   CONCERNING...TORNADO WATCH 666...
   
   VALID 222334Z - 230000Z
   
   WW 666 WILL BE ALLOWED TO EXPIRE AS SCHEDULED AT 00Z.
   
   REGIONAL RADARS SHOW STORM MERGERS FROM NERN CO TO SERN CO NEAR TAD
   HAVE RESULTED IN AN OVERALL CLUSTER OF STORMS MOVING TO THE SE AT
   15-20 KT.  ADDITIONAL DISCRETE STORMS CONTINUE IN ADVANCE OF THE
   LARGER CLUSTER...WHILE DOWNSTREAM CONVECTION FROM NERN NM INTO SWRN
   KS HAS STABILIZED THIS AIR MASS.  AN ISOLATED DAMAGING WIND AND/OR
   HAIL EVENT WILL BE POSSIBLE DURING THE NEXT HOUR.  THE GREATER
   THREAT WILL LIKELY BE HEAVY RAINFALL RATES /1-2 INCH PER HOUR/ WITH
   ADDITIONAL STORM MERGERS AND SLOW STORM MOTIONS.
   
   ..PETERS.. 07/22/2004
   
   
   ATTN...WFO...DDC...GLD...PUB...BOU...
   
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