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Mesoscale Discussion 1054
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   Mesoscale Discussion 1054
   NWS Storm Prediction Center Norman OK
   0743 PM CDT Mon Jun 29 2020

   Areas affected...Northern High Plains

   Concerning...Tornado Watch 318...

   Valid 300043Z - 300245Z

   The severe weather threat for Tornado Watch 318 continues.

   SUMMARY...Scattered severe storms will continue this evening across
   the northern High Plains.

   DISCUSSION...Convection continues to increase across the northern
   High Plains this evening, primarily along a corridor from near the
   Black Hills into western ND. Conditions across western ND remain
   apparently favorable for tornadic supercells with strong
   shear/buoyancy.

   Latest satellite imagery suggests favorable venting aloft as anvils
   across western ND are expanding significantly, indicative of strong
   updrafts. One long-lived supercell over McKenzie County ND is
   beginning to surge east where it will soon merge with several robust
   updrafts. This may ultimately evolve into a larger complex of storms
   that should eventually track northeast toward the international
   border.

   Farther south, numerous discrete updrafts are spreading north across
   the Black Hills region. Western/northern periphery of the higher
   terrain appear a bit more favorable for potential tornado
   development given the stronger low-level shear. Otherwise, large
   hail remains likely with the strongest convection as it spreads
   north-northeast.

   ..Darrow.. 06/30/2020

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

   ATTN...WFO...BIS...UNR...BYZ...GGW...RIW...

   LAT...LON   44050641 49040561 49010162 44050277 44050641 

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