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Mesoscale Discussion 92
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   Mesoscale Discussion 0092
   NWS Storm Prediction Center Norman OK
   0446 PM CST Sat Feb 24 2018

   Areas affected...portions of central into northeastern MN and
   northwest WI

   Concerning...Heavy snow 

   Valid 242246Z - 250345Z

   SUMMARY...Periods of heavy snow are expected to lift north and east
   across parts of central into northeastern MN and northwest WI
   through the evening hours. Snowfall rates around one inch per hour
   are expected at times over the next several hours.

   DISCUSSION...Snowfall has increased in intensity over the last hour
   or two as is evident in regional radar signatures and surface
   observations across central MN. Precipitation has increased in the
   deformation region ahead of the approaching upper trough, coincident
   with a band of 700 mb frontogenesis and midlevel warm advection. As
   the upper trough continues to pivot east/northeast into the Upper
   Midwest, the area of heaviest snow is expected to lift north and
   east across central into northeastern MN and northwest WI through
   the evening hours. Ample midlevel moisture and strong forcing for
   ascent through a deep dendritic growth zone should allow for heavy
   snow at times. Rates are expected to be around an inch per hour, but
   may be locally higher for short periods of time.

   ..Leitman.. 02/24/2018

   ...Please see for graphic product...


   LAT...LON   44369313 44349391 44399470 44689555 45209588 45959579
               46749509 47239416 47619267 47669175 47409085 47119040
               46489010 45909001 45519022 45249043 44829141 44529248

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