Storm Prediction Center Mesoscale Discussion 29

   Mesoscale Discussion 0029
   NWS Storm Prediction Center Norman OK
   0242 AM CST Fri Jan 10 2025

   Areas affected...Central/northern AR into northern MS and western TN

   Concerning...Heavy snow 

   Valid 100842Z - 101345Z

   SUMMARY...Occasional snow rates of near/above 1 inch per hour remain
   possible through the early morning.

   DISCUSSION...Moderate to occasionally heavy snow is ongoing early
   this morning across parts of far eastern OK into central/northern
   AR, in association with a mid/upper-level shortwave trough moving
   from the southern Plains towards the lower MS Valley. Low-level
   warm/moist advection and favorable upper jet dynamics will continue
   to support an extensive precipitation plume through the overnight.
   Surface observations and recent dual-pol data from KLZK and KNQA
   suggest the transition between snow and mixed precipitation types
   has remained relatively stationary to the south of Little Rock and
   Memphis (with some oscillation) over the last 1-2 hours, and a
   subfreezing column was maintained on the 05Z LZK sounding, though
   with near 0C observed between 850-750 mb. 

   Precipitation rates will remain supportive of moderate to locally
   heavy snow through the early morning across parts of
   central/northern AR, with an increase in snow rates expected with
   time into western TN and far northern MS. Some mixing will remain
   possible along the southern portion of the MCD area, especially
   where somewhat stronger low-level warm advection persists across
   northern MS.

   ..Dean.. 01/10/2025

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

   ATTN...WFO...MEG...LZK...TSA...

   LAT...LON   34709429 35499418 36219360 36429297 36379136 36089041
               35748914 35648874 35508829 35228808 34798831 34608945
               34499080 34539291 34499369 34529411 34709429