Mesoscale Discussion 1757
   NWS Storm Prediction Center Norman OK
   1128 AM CDT Mon Oct 26 2020

   Areas affected...portions of north Texas into west-central Oklahoma
   and far southeast Kansas.

   Concerning...Freezing rain 

   Valid 261628Z - 262030Z

   SUMMARY...Ongoing freezing rain and mixed precipitation is forecast
   to continue for at least the next several hours. Ice and sleet
   accumulation is likely.

   DISCUSSION...1530z observations showed widespread freezing rain and
   mixed precipitation ongoing across portions of north Texas and
   west-central Oklahoma. To the southwest of the ongoing precipitation
   shield, a new zone of elevated thunderstorms has developed in
   response to continued mid-level warm air advection and isentropic
   ascent ahead of a diffuse shortwave trough. The shallow arctic
   airmass across much of Oklahoma is forecast to continue to gradually
   creep southward through this afternoon. Model soundings show much of
   the ongoing and developing precipitation will remain in an airmass
   favorable for periods of freezing rain and mixed precipitation
   types. While much of the heavier precipitation from the initial
   shortwave trough earlier this morning will remain on the warmer side
   of the boundary, the threat of icing and perhaps accumulating sleet
   will likely continue for at least the next several hours.
   Precipitation intensity is forecast to gradually decrease through
   this afternoon as upper-level support wains behind the passage of
   the initial shortwave trough. However, the saturated shallow arctic
   airmass and weak mid-level warm advection will likely support light
   precipitation in the form of freezing mist or sleet through the
   evening.

   ..Lyons/Thompson.. 10/26/2020

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

   ATTN...WFO...SGF...TSA...ICT...OUN...SJT...LUB...AMA...

   LAT...LON   34699757 33969850 33859859 33489935 33129994 33050056
               33330067 34490022 35099969 36009872 37059715 37599616
               37619584 37569539 37359502 37129498 36709536 36339584
               35739648 35499668 35119704 34699757