Mesoscale Discussion 2057
   NWS Storm Prediction Center Norman OK
   0701 PM CST Wed Dec 21 2022

   Areas affected...Southern SD...parts of NE... far southeast WY...and
   northeast CO

   Concerning...Blizzard 

   Valid 220101Z - 220500Z

   SUMMARY...Reduced visibilities in blowing snow and localized
   ground-blizzard conditions are possible across parts of the northern
   and central Plains into the overnight hours.

   DISCUSSION...Latest surface observations show 25-35 mph sustained
   northerly surface winds (with gusts upwards of 45 mph) across parts
   of the northern and central Plains -- behind a strong
   southward-advancing cold front. These strong/gusty surface winds,
   coupled with very cold surface temperatures (-05 to -15 F), are
   yielding locally favorable conditions for reduced visibilities in
   blowing snow -- despite only light to moderate ongoing snow over the
   area. Visibilities of 1/2 to 1/4 mile are possible into the
   overnight hours -- especially over areas that continue to experience
   at least light to moderate snow showers amid the strong/gusty winds.

   ..Weinman.. 12/22/2022

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

   ATTN...WFO...FSD...OAX...ABR...GID...LBF...UNR...GLD...BOU...
   CYS...

   LAT...LON   42669734 42139729 41779768 41349843 40849956 40460103
               40160196 40140323 40270383 40650449 41080493 41530487
               42170451 42750357 43170228 43470048 43519860 43259770
               42669734