MESOSCALE DISCUSSION 2038
   NWS STORM PREDICTION CENTER NORMAN OK
   0931 PM CDT SAT SEP 29 2007
   
   AREAS AFFECTED...SERN CO AND WRN KS THROUGH CNTRL NEB
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 694...
   
   VALID 300231Z - 300400Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 694
   CONTINUES.
   
   THREAT FOR ISOLATED DAMAGING WIND AND LARGE HAIL IS EXPECTED TO
   CONTINUE NEXT COUPLE HOURS AS STORMS MOVE THROUGH THE REMAINDER OF
   WW 694. SEVERE THREAT EAST OF WW 694 APPEARS MARGINAL...ESPECIALLY
   KS PORTION...AND STORMS OVER WRN KS MAY GRADUALLY WEAKEN AS THEY
   MOVE EAST OF WW. 
   
   LINE OF STORMS THAT DEVELOPED ALONG A PRE-FRONTAL TROUGH EARLIER
   THIS EVENING NOW EXTENDS FROM N CNTRL NEB SWWD TROUGH NWRN KS INTO
   EXTREME SERN CO. ORGANIZED STORMS STRUCTURES INCLUDING SUPERCELLS
   AND BOW ECHOES CONTINUE WITHIN THE LINE. ACTIVITY IS MOVING ENEWD AT
   AROUND 35 TO 40 KT AND SOME STORMS WILL BEGIN MOVING EAST OF CURRENT
   WW BY 0330Z. STORMS ARE NOW MOVING THROUGH THE AXIS OF GREATEST
   INSTABILITY WITH WEAKER INSTABILITY AND INCREASING CONVECTIVE
   INHIBITION FARTHER EAST TOWARD CNTRL KS. GIVEN A MORE HOSTILE
   THERMODYNAMIC ENVIRONMENT WITH EWD EXTENT INTO KS AND NEB...IT
   APPEARS THAT STRONGER FORCING WILL BECOME NECESSARY TO SUSTAIN
   ROBUST UPDRAFTS. PRIMARY FORCING ASSOCIATED WITH LEAD IMPULSE IS
   LIFTING NEWD THROUGH NEB...AND STRONGER FORCING WITH MAIN VORT MAX
   NOW MOVING INTO WRN CO WILL LIKELY SPREAD INTO NEB LATER TONIGHT
   ALONG WITH STRONG LIFT ALONG SEWD ADVANCING COLD FRONT. THIS
   SUGGESTS SEVERE THREAT SHOULD PERSIST LONGER IN NEB PORTION OF WW
   THAN IN KS.
   
   ..DIAL.. 09/30/2007
   
   
   ATTN...WFO...GID...LBF...DDC...GLD...PUB...
   
   42289917 40449983 38610073 37190201 37120259 37660281
   39100207 40320191 41890175 42800095 42900003