Mesoscale Discussion 1123
   NWS Storm Prediction Center Norman OK
   0614 PM CDT Mon Jul 06 2020

   Areas affected...southeast Montana...northeast Wyoming...western
   South Dakota and southwest North Dakota

   Concerning...Severe Thunderstorm Watch 334...

   Valid 062314Z - 070045Z

   The severe weather threat for Severe Thunderstorm Watch 334
   continues.

   SUMMARY...Isolated large hail and damaging wind will remain likely
   with the stronger storms as they continue southeast through the
   northern High Plains this evening.

   DISCUSSION...Isolated supercells continue spreading southeast within
   corridor of post-frontal low-level easterlies from southeast MT into
   northeast WY. The downstream atmosphere is moderately unstable in
   this region with 2000 J/kg MLCAPE. Moreover, strong low-level
   turning beneath 50 kt mid-upper level flow is contributing to 60 kt
   effective bulk shear supportive of supercells. Storms will likely
   remain isolated for a while longer. Later upscale growth will depend
   on if enough storms can develop and consolidate a cold pool as the
   low-level jet strengthens, but before increasing convective
   inhibition becomes a limiting factor.

   ..Dial.. 07/06/2020

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

   ATTN...WFO...ABR...BIS...UNR...BYZ...GGW...

   LAT...LON   46650724 46470375 45820205 44860130 43150161 43540421
               45220680 46650724