Storm Prediction Center Mesoscale Discussion 2251

   Mesoscale Discussion 2251
   NWS Storm Prediction Center Norman OK
   0654 PM CST Sat Dec 06 2025

   Areas affected...central Iowa

   Concerning...Heavy snow 

   Valid 070054Z - 070400Z

   SUMMARY...Moderate to heavy snow to continue across portions of
   central Iowa over the next couple of hours. Occasional rates 1"/hr
   with heavier bands.

   DISCUSSION...Recent radar and surface observations suggest moderate
   to heavy snow continues across portions of central Iowa. This is
   occurring near the surface low and in the region of strong DPVA
   aloft overspreading central Iowa. Two regions that will favor heavy
   snow (possible 1"/hr rates) over the next couple of hours are near
   the zone of 700-850 mb frontogenesis across central Iowa north of
   Des Moines and in a smaller mesoscale sector along and south of I-80
   and trending eastward of I-35 where a more narrow band of heavy snow
   has developed.  Guidance indicates a gradual downward trend in
   snowfall rates is expected through the late evening/early morning
   Sunday. However, periods of locally moderate snow may continue at
   times across northeastern Iowa into southern Wisconsin/northern
   Illinois.

   ..Thornton.. 12/07/2025

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

   ATTN...WFO...DVN...DMX...

   LAT...LON   41659462 41259415 40959400 40789385 40689358 40719337
               40909298 41079272 41409255 42279223 42579245 42759301
               42839358 42509421 41659462