MESOSCALE DISCUSSION 1580
   NWS STORM PREDICTION CENTER NORMAN OK
   0249 AM CDT FRI JUL 09 2004
   
   AREAS AFFECTED...SERN NEB AND CNTRL/NERN KS
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 594...595...
   
   VALID 090749Z - 090915Z
   
   CORRECTED FOR REFERENCED CITIES IN THIRD PARAGRAPH
   
   WELL ORGANIZED LINEAR MCS CONTINUES TO FORWARD PROPAGATE SEWD ACROSS
   SERN NEB AND NCNTRL KS AT 40-45 KTS.  NRN EDGE OF THE SYSTEM IS
   BEGINNING TO WEAKEN CONSIDERABLY AS IT APPROACHES THE MO RVR NEAR
   OMAHA...THOUGH WARM ADVECTION WING IS DEVELOPING EWD INTO SWRN IA. 
   PRIND NRN EDGE OF THE LINE WILL LIKELY CONTINUE WEAKENING AS THE
   ACTIVITY ENCOUNTERS SLIGHTLY LESS INSTABILITY THAN WHAT WAS
   AVAILABLE FARTHER WEST.
   
   MEANWHILE...STRONGEST DEVELOPMENT CONTINUES ALONG SRN EDGE OF GUST
   FRONT IN NCNTRL KS.  LAMONT AND HILLSBORO PROFILERS SHOW A STRONG
   LLJ OF 40-45 KTS AND THIS WILL LIKELY CONTINUING FEEDING THE TSTMS
   WITH PARCELS CONTAINING MUCAPES OF 4000 J/KG.  DESPITE WEAK H5
   FLOW...THIS MCS HAS HAD A VERY WELL DEVELOPED COLD POOL AND DAMAGING
   WINDS WILL REMAIN A THREAT FOR A FEW MORE HOURS AS IT MOVES SEWD
   INTO NERN/CNTRL KS.  
   
   IF THE TSTMS HOLD TOGETHER...EXTRAPOLATION HAS THE LEADING EDGE OF
   THE STORMS ROUGHLY THE MANHATTAN AREA 8-900 UTC...AND PERHAPS TOPEKA
   AND EMPORIA /I-35 TURNPIKE CORRIDOR/ BY 900-930 UTC.  
   
   IN WAKE OF THIS MCS...MORE ELEVATED TSTMS HAVE BEEN DEVELOPING
   PERIODICALLY AND THOSE MAY CONTAIN GUSTY WINDS AND ISOLD HAIL.
   
   LASTLY...SEVERE THUNDERSTORM WATCH 594 MAY BE CANCELLED EARLY AS
   TSTMS HAVE ESSENTIALLY MOVED WELL INTO WATCH 595.
   
   ..RACY.. 07/09/2004
   
   
   ATTN...WFO...OAX...TOP...ICT...GID...DDC...GLD...
   
   40030031 40009858 40659755 41509754 41459640 40879596
   40229561 39039589 38119650 38059855 38169940 39229991