Mesoscale Discussion 0056
   NWS Storm Prediction Center Norman OK
   0336 PM CST Thu Jan 16 2020

   Areas affected...portions of central and western OK into the eastern
   TX Panhandle

   Concerning...Freezing rain 

   Valid 162136Z - 170330Z

   SUMMARY...Areas of light freezing rain are expected across parts of
   central into western OK and the eastern TX Panhandle into early
   evening. Ice accumulation should remain light and mainly over
   elevated surfaces.

   DISCUSSION...Warm advection atop a shallow near-surface cold layer
   is resulting in areas of light rain and freezing rain across parts
   of southwestern OK into the eastern TX Panhandle as of 2130z.
   Surface temperatures generally range from around 32-34 degrees from
   near the OKC Metro south of I-40 and west of I-44, with colder
   temperatures north of the I-40 corridor across northwest OK into the
   TX Panhandle. Wet-bulb zero temperatures are however below freezing
   across the MCD area. As precipitation spreads northward and
   increases, areas near to just-above freezing should cool and rain
   will change to freezing rain. 

   Above-normal high temperatures across the region in prior days have
   largely led to road surface temperatures above freezing. As a
   result, any ice accumulation should remain on elevated surfaces,
   such as bridges and overpasses. Precipitation is expected to
   increase and spread northward into this evening, however, the strong
   warm advection regime should maintain temperatures hovering in the
   30-33 degree range, keeping ice accumulation patchy and light.

   ..Leitman.. 01/16/2020

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

   ATTN...WFO...OUN...LUB...AMA...

   LAT...LON   34529901 33740016 33530086 33690127 34030154 34610170
               35290175 35790173 36240157 36640110 36860035 36809932
               36439824 36089786 35889773 35559772 35349781 35159793
               35059805 34529901