Mesoscale Discussion 1827
   NWS Storm Prediction Center Norman OK
   0912 AM CST Wed Dec 02 2020

   Areas affected...Portions of southern KS...northwestern OK...and the
   extreme eastern TX/OK Panhandles

   Concerning...Heavy snow 

   Valid 021512Z - 021915Z

   SUMMARY...A narrow band of moderate to heavy snow with rates around
   1 inch per hour should continue this morning before potentially
   weakening and reforming later this afternoon.

   DISCUSSION...Recent water vapor satellite imagery shows a well
   defined mid-level low centered over the eastern TX Panhandle and
   western OK this morning. Large-scale forcing for ascent associated
   with this mid-level low (divergence aloft), combined with
   frontogenesis mainly in the 850-700 mb layer, are supporting a
   narrow deformation band of moderate to heavy snow across a small
   part of northwestern OK, southern KS, and the extreme eastern
   portions of the TX/OK Panhandles. Saturation and continued lift
   through the dendritic growth zone should support snowfall rates
   around 1 inch per hour in this narrow north-south oriented band
   through the remainder of the morning. This band may weaken somewhat
   by early afternoon as the mid/upper-level low pivots slowly eastward
   across the TX/OK Panhandles and western OK. However, the
   precipitation field across northwestern OK and vicinity may expand
   as this occurs, with a broader area of moderate to heavy snow
   possibly developing across this region later this afternoon as the
   deformation band eventually reforms and becomes oriented more
   west-east with time.

   ..Gleason.. 12/02/2020

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

   ATTN...WFO...OUN...DDC...AMA...

   LAT...LON   36130013 36530035 36960039 37390018 37769965 37899922
               37569915 37109923 36549905 36229909 35899939 35909982
               36130013