Mesoscale Discussion 0861
   NWS Storm Prediction Center Norman OK
   0829 PM CDT Sat Jun 06 2020

   Areas affected...Dakotas...Northern NE

   Concerning...Severe Thunderstorm Watch 264...

   Valid 070129Z - 070300Z

   The severe weather threat for Severe Thunderstorm Watch 264
   continues.

   SUMMARY...New Severe thunderstorm watch is warranted for portions of
   the Dakotas. Fast-moving Derecho continues to produce severe winds
   in excess of 50kt.

   DISCUSSION...Derecho that evolved across eastern UT/CO has
   progressed across the central Rockies and is now racing across the
   northern/central High Plains. Latest radar data suggests the
   strongest surge is near the Black Hills where the leading bow is
   surging northeast at 65kt. Numerous measured wind gusts between
   50-65kt have been noted with this squall line and there is reason to
   believe damaging winds will persist with this MCS as it surges
   across the northern Plains in advance of a negative-tilt short-wave
   trough. New severe thunderstorm watch will be issued around 02z.

   ..Darrow.. 06/07/2020

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

   ATTN...WFO...FGF...FSD...ABR...BIS...UNR...GGW...

   LAT...LON   48970274 48129911 45859715 43099759 43209976 45830155
               47450437 48970274