Mesoscale Discussion 2058
   NWS Storm Prediction Center Norman OK
   0552 AM CDT Wed Oct 09 2019

   Areas affected...central through south central Montana into
   northwest Wyoming

   Concerning...Heavy snow 

   Valid 091052Z - 091445Z

   SUMMARY...Areas of moderate to heavy snow should persist from
   central through south central Montana into northwest Wyoming through
   mid morning with rates up to or occasionally exceeding 1 inch per
   hour.

   DISCUSSION...The winter storm appears to be in the process of
   reorganizing early this morning with a band of mid-level
   frontogenetic forcing located from northwest WY into central MT
   spreading very slowly southeast. Water vapor imagery indicates
   primary zone of deeper forcing for ascent accompanying a progressive
   shortwave trough is advancing eastward and coincides with band of
   maximum frontogenetic forcing. Snowfall rates should be augmented
   within this corridor of ascent through mid morning. Moreover, a
   northerly post-frontal upslope component suggests snowfall rates
   will probably be maximized along the northward facing slopes of the
   mountains in northwest WY and southwest through south central MT
   next few hours.

   ..Dial.. 10/09/2019

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

   ATTN...WFO...BYZ...GGW...RIW...TFX...

   LAT...LON   46170758 44500921 44531055 45591069 47030903 47200725
               46170758