MESOSCALE DISCUSSION 1935
   NWS STORM PREDICTION CENTER NORMAN OK
   0349 PM CDT WED SEP 05 2007
   
   AREAS AFFECTED...WRN WY...UT...NWRN CO
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 666...
   
   VALID 052049Z - 052245Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 666
   CONTINUES.
   
   LINE OF STRONG/SEVERE THUNDERSTORMS FROM EXTREME WRN WY INTO NORTH
   CENTRAL UT IS CONTINUING TO MOVE ENEWD AROUND 30 KT...WITH EMBEDDED
   LEWPS/BOW ECHO SIGNATURES EVIDENT IN RADAR IMAGERY.  FARTHER
   SOUTH/SOUTHEAST...A BAND OF WIDELY SCATTERED THUNDERSTORMS INCLUDING
   A FEW SEVERE STORMS EXTENDS FROM NWRN CO/NERN UT INTO SOUTH CENTRAL
   UT.
   
   THE CONVECTIVE LINE IS OCCURRING JUST AHEAD OF THE STRONG UPPER LOW
   CENTERED OVER SWRN ID...IN ASSOCIATION WITH STRONG MID/UPPER LEVEL
   JET STREAK LIFTING NEWD ACROSS NWRN UT INTO WRN WY.  NRN PART OF THE
   LINE WILL BE MOVING INTO A PROGRESSIVELY LESS UNSTABLE ENVIRONMENT
   OVER NWRN WY...AND THIS CONVECTION MAY BEGIN TO WEAKEN OVER THE NEXT
   1-2 HOURS.  HOWEVER...STORMS OVER EXTREME SWRN WY AS WELL AS THOSE
   IN SOUTH CENTRAL/NERN UT AND NWRN CO ARE LIKELY TO MAINTAIN SEVERE
   POTENTIAL OVER THE NEXT SEVERAL HOURS AS THEY PROGRESS NEWD THROUGH
   A FAVORABLY SHEARED/UNSTABLE ENVIRONMENT...WITH A CONTINUING THREAT
   FOR LARGE HAIL AND DAMAGING WIND GUSTS.
   
   ..WEISS.. 09/05/2007
   
   
   ATTN...WFO...CYS...RIW...GJT...SLC...PIH...
   
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