Storm Prediction Center Mesoscale Discussion 365

   Mesoscale Discussion 0365
   NWS Storm Prediction Center Norman OK
   1236 AM CDT Tue Apr 07 2026

   Areas affected...portions of eastern Nebraska into southwestern Iowa
   and extreme northern Missouri

   Concerning...Heavy snow 

   Valid 070536Z - 071130Z

   SUMMARY...Snowfall rates may occasionally exceed 1 inch per hour
   tonight from far eastern Nebraska into portions of southwestern Iowa
   and extreme northern Missouri in association with a heavier band of
   precipitation.

   DISCUSSION...Latest radar imagery depicts an ongoing precipitation
   band extending from portions of eastern Nebraska into northeastern
   Missouri within a corridor of strong 700-600 mb frontogenesis. While
   surface temperatures remain just above freezing in the mid-30s F,
   continued low-level evaporative cooling amid weak cold, dry air
   advection will support decreasing surface temperatures and a
   transition from rain to snow as the primary precipitation type over
   the next few hours. The aforementioned frontogenetic forcing and
   favorable jet streak dynamics aloft are expected to contribute to
   strong ascent within the dendritic growth zone, which may promote
   occasional snowfall rates of 1 inch or more per hour within the
   heaviest portions of the band.

   Some uncertainty does remain regarding the degree of low-level
   cooling, however, with some guidance suggesting that temperatures
   within a low-level warm layer (evident around 850 mb in the 00Z OAX
   sounding) may remain just above freezing. Should this occur, a
   snow/sleet mix would be more likely.

   ..Chalmers.. 04/07/2026

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

   ATTN...WFO...DMX...EAX...OAX...

   LAT...LON   40369388 40509435 40839522 40979566 41069616 41129656
               41289677 41539682 41719657 41729575 41449459 41149400
               40939366 40659343 40409364 40369388