Mesoscale Discussion 1146
   NWS Storm Prediction Center Norman OK
   0633 PM CDT Sat Jul 03 2021

   Areas affected...south-central South Dakota south into east-central
   Colorado

   Concerning...Severe Thunderstorm Watch 332...

   Valid 032333Z - 040100Z

   The severe weather threat for Severe Thunderstorm Watch 332
   continues.

   SUMMARY...Thunderstorm clusters will continue this afternoon and
   evening posing a risk for hail and wind. The threat should diminish
   this evening with the loss of daytime heating.

   DISCUSSION...Clusters of thunderstorms continue within a broad
   surface-convergent zone associated with a lee trough. Surface
   temperatures in the upper 80s F to lower 90s F and dewpoint
   temperatures around 60 F have contributed to CAPE values ranging
   from 1000-2000 J/kg across the High Plains. Marginal deep-layer
   shear of between 15-30 knots from north to south across the area has
   limited thunderstorm organization to mostly single-cell to
   multi-cell clusters. The degree of instability and mid-level lapse
   rates around 7-8 C/km will support a hail and wind threat for
   another couple hours, before diminishing with the loss of diurnal
   heating.

   ..Marsh.. 07/03/2021

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...FSD...ABR...LBF...UNR...GLD...PUB...BOU...CYS...

   LAT...LON   37930504 42670363 44890167 44960037 43759903 40530090
               38020216 37620359 37930504