Mesoscale Discussion 1295
   NWS Storm Prediction Center Norman OK
   0717 PM CDT Mon Jul 20 2020

   Areas affected...West-central Nebraska

   Concerning...Severe Thunderstorm Watch 389...

   Valid 210017Z - 210145Z

   The severe weather threat for Severe Thunderstorm Watch 389
   continues.

   SUMMARY...Severe hail/wind potential continues within Severe
   Thunderstorm Watch 389 primarily across Cherry County in northern
   Nebraska as well as southwest Nebraska through early/mid-evening.

   DISCUSSION...Persistent multi-hour severe storms continue to slowly
   merge across southwest Nebraska south of I-80, but even with this
   merging tendency, an intense supercell is noted across southwest
   Lincoln County as of 705pm CDT. The ambient environment across this
   portion of southwest Nebraska is characterized by upwards of
   2500-3000 J/kg MLCAPE and as much as 40-50 kt effective shear as
   deduced from regional WSR-88D VWP data. Further quasi-linear upscale
   growth may occur over the next 1-2 hours, with some increase in
   damaging wind potential. An expected southeastward motion toward the
   edge of/out of Severe Thunderstorm Watch 389 suggests some
   consideration might need to be given to an additional watch across
   far southwest Nebraska/northwest Kansas.

   Farther north, an additional storm cluster should continue to pose a
   damaging wind/severe hail risk primarily across Cherry County over
   the next hour or two. A combination of convective outflow and an
   increasing cirrus canopy may keep the severe threat somewhat
   limited/less focused across other parts of the Nebraska Sandhills.

   ..Guyer.. 07/21/2020

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

   ATTN...WFO...GID...LBF...UNR...GLD...BOU...

   LAT...LON   43360127 42739997 41400012 40269986 40040054 40680193
               41380255 42840266 43040160 43360127