MESOSCALE DISCUSSION 1498
   NWS STORM PREDICTION CENTER NORMAN OK
   0524 PM CDT MON JUL 16 2007
   
   AREAS AFFECTED...PARTS OF NE NV...SRN ID AND NW UT
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 162224Z - 170000Z
   
   DIVERGENT UPPER FLOW FIELD ASSOCIATED WITH A WEAK MID-LEVEL IMPULSE
   NOW LIFTING NORTH OF THE GREAT BASIN TOWARD THE NORTHERN ROCKIES 
   HAS AIDED CONSIDERABLE CONVECTIVE DEVELOPMENT ACROSS THE HIGHER
   TERRAIN OF NORTHEASTERN NEVADA THROUGH SOUTHERN IDAHO.  GENERALLY
   LOW BOUNDARY LAYER MOISTURE LEVELS ARE LIMITING CAPE AND UPDRAFT
   STRENGTH...AND INCREASING MID/HIGH LEVEL CLOUDINESS WILL BEGIN TO
   RESTRICT ADDITIONAL SURFACE HEATING...BUT LARGE-SCALE FORCING MAY
   STILL PROMOTE THE EVOLUTION OF A CONSOLIDATING CLUSTER OF STORMS
   THROUGH THE 17/00-02Z TIME.  AS THIS OCCURS...AND PERHAPS ENHANCED
   BY MODERATE STORM MOTIONS ASSOCIATED WITH 25-30 KT MID/UPPER FLOW
   ...SUB-CLOUD EVAPORATIVE COOLING IN A DEEPLY MIXED BOUNDARY LAYER
   COULD BECOME SUFFICIENT FOR STRONG GUSTY SURFACE WINDS...
   PARTICULARLY AS ACTIVITY DEVELOPS NORTH OF THE MOUNTAINS THROUGH THE
   UPPER SNAKE RIVER VALLEY.
   
   ..KERR.. 07/16/2007
   
   
   ATTN...WFO...SLC...PIH...BOI...LKN...
   
   42711583 43441494 44041340 43931182 42411128 41661204
   41021376 40891506 41681608