Mesoscale Discussion 0191
   NWS Storm Prediction Center Norman OK
   0459 AM CDT Wed Mar 13 2019

   Areas affected...portions of far northwest NE into central SD

   Concerning...Winter mixed precipitation 

   Valid 130959Z - 131400Z

   SUMMARY...A narrow corridor of rain changing to and/or mixing with
   freezing rain and sleet is expected for a few hours this morning.

   DISCUSSION...Surface temperature observations from far northwest NE
   into southwest and south-central SD are running a few degrees warmer
   compared forecast guidance as of 09z. This is resulting in mainly
   rain with the band of precipitation lifting northward into southern
   SD currently. However, as the surface low over eastern CO continues
   to intensify early this morning, colder air over northern SD will
   shift southward with time as northeasterly low level flow
   strengthens. As such, a narrow corridor of rain should mix with
   frozen precip types before transitioning to freezing rain and sleet
   further north over the next couple of hours. This freezing rain and
   sleet should persist for a few hours this morning before a
   stronger/deeper cold surge works southward and a transition to all
   snow occurs later this afternoon.

   ..Leitman.. 03/13/2019

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

   ATTN...WFO...FSD...ABR...LBF...UNR...CYS...

   LAT...LON   43530395 44170208 44480074 44649989 44659939 44569916
               44339895 44079898 43789934 43330042 42870219 42670338
               42860404 43090413 43530395