MESOSCALE DISCUSSION 1858
   NWS STORM PREDICTION CENTER NORMAN OK
   0902 PM CDT SAT SEP 01 2012
   
   AREAS AFFECTED...MUCH OF UTAH...FAR SWRN WY...NWRN CO
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 604...
   
   VALID 020202Z - 020300Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 604
   CONTINUES.
   
   SUMMARY...THE SEVERE THREAT ACROSS THE WATCH AREA IS EXPECTED TO
   BECOMING INCREASINGLY ISOLATED AND THE WW WILL BE ALLOWED TO EXPIRE
   AT 03Z.
   
   DISCUSSION...TSTM COVERAGE HAS GRADUALLY DIMINISHED ACROSS THE WATCH
   AREA WITH THE STRONGEST STORMS NOW LOCATED ACROSS ERN TOOELE AND
   UTAH COUNTIES. REDUCED INSTABILITY ASSOCIATED WITH THE LOSS OF
   DAYTIME HEATING AS WELL AS THE LOSS OF LIFT ASSOCIATED WITH A
   PASSING SHORTWAVE TROUGH SHOULD CONTINUE THE CURRENT TREND OF
   DIMINISHING STORM COVERAGE. STRONG SWLY FLOW ALOFT WILL CONTINUE TO
   SUPPORT GUSTY WINDS...EVEN IN MODERATE SHOWER ACTIVITY...BUT THE
   OVERALL SEVERE THREAT IS EXPECTED TO BECOMING INCREASINGLY ISOLATED
   AND THE WW WILL BE ALLOWED TO EXPIRE AT 03Z.
   
   ..MOSIER.. 09/02/2012
   
   
   ATTN...WFO...RIW...GJT...SLC...PIH...
   
   LAT...LON   38571403 42001403 42001103 41591104 41571002 41001004
               40991000 39820996 39800988 39531003 39281006 38901016
               38611006 38501000 38501251 38561254 38571403