Mesoscale Discussion 1779
   NWS Storm Prediction Center Norman OK
   0942 AM CST Tue Nov 10 2020

   Areas affected...northeastern Nebraska...eastern South
   Dakota...western/central Minnesota...and far northwestern Iowa

   Concerning...Heavy snow 

   Valid 101542Z - 102145Z

   SUMMARY...Periods of heavy snow will occur across the discussion
   area through the afternoon.

   DISCUSSION...Radar mosaic imagery depicts a broad area of moderate
   to locally heavy snow over northeastern Nebraska and eastern South
   Dakota currently.  A weak surface low was also located south of this
   area across northwestern Missouri, and a negative-tilt mid-level
   wave was analyzed over central Nebraska.  The eastward progression
   of this mid-level wave - in concert with increasing frontogenesis
   and gradual strengthening of the surface low - will aid in
   increasing snowfall rates along with northeastward progression of
   the precipitation shield through the afternoon.  This notion is also
   supported by recent high-resolution guidance.  Rates of 1-2 inches
   per hour will accompany the snow through the afternoon.  Areas along
   the eastern extent of the MD area (northwest Iowa into central
   Minnesota) may see occasional mixing with freezing rain or sleet at
   times as well.

   ..Cook.. 11/10/2020

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

   ATTN...WFO...DLH...MPX...FGF...FSD...OAX...ABR...GID...LBF...

   LAT...LON   43489529 44009490 44589456 45029424 45249388 45889374
               46159407 46269481 46219549 45959663 45649731 44599830
               43009856 41839842 41319789 41469726 42189632 42789583
               43489529