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Mesoscale Discussion 38
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   Mesoscale Discussion 0038
   NWS Storm Prediction Center Norman OK
   0202 AM CST Mon Jan 22 2018

   Areas affected...portions of eastern NE...far southeast
   SD...northwest IA and far southwest MN

   Concerning...Blizzard 

   Valid 220802Z - 221400Z

   SUMMARY...Moderate to heavy snow with blizzard conditions will
   continue across central NE and shift north and east through the
   early morning hours. Snowfall rates and blizzard conditions are
   expected to increase across the MCD area over the next few hours.

   DISCUSSION...A potent midlevel low over KS will continue to eject
   east/northeast early this morning. Latest water-vapor loop shows the
   dry slot associated with this system shifting east/northeast across
   far southeast NE and eastern KS with stronger forcing for ascent
   lifting east/northeast across the central Plains. Currently, the
   heaviest snow is falling in the deformation region along a band of
   midlevel frontogenesis across portions of western into central NE.
   Snow rates will increase to the east and north as the system
   continues to lift northeast through the early morning hours. Snow
   rates will approach 1 inch per hour, with locally higher rates at
   times.

   Furthermore, strong northerly flow on the back side of a deepening
   surface low over north-central KS will likewise increase from
   southwest to northeast across the MCD area through the early
   morning. Sustained winds around 20-30 mph with higher gusts will
   result in dangerous blizzard conditions with very low visibility.

   ..Leitman.. 01/22/2018

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

   ATTN...WFO...MPX...DMX...FSD...OAX...GID...LBF...

   LAT...LON   40319819 40259898 40459961 40969971 41749949 42519887
               43309771 43779664 44119546 44309454 44289409 44169376
               43969349 43429371 43109412 42319567 41719645 41039714
               40439790 40319819 

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Page last modified: January 22, 2018
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