Mesoscale Discussion 0031
   NWS Storm Prediction Center Norman OK
   0734 AM CST Sat Jan 11 2020

   Areas affected...parts of north-central TX...far southern OK

   Concerning...Heavy snow 

   Valid 111334Z - 111530Z

   SUMMARY...A quick burst of heavy snow with rates around 1 inch per
   hour is expected through 930am CST over the I-35 corridor in the
   northern exurbia of the DFW Metroplex and also into far southern OK.

   DISCUSSION...Radar imagery and surface observations as of 725am CST
   indicate heavy snow west of the I-35 corridor north of the DFW
   Metroplex.  Surface observations show temperatures in the low to mid
   30s degrees F east of the heavy snow but strong low-level cold
   advection will likely facilitate temperatures falling to freezing
   during the next 1-2 hours.  

   The 12z FWD sounding showed a mid-level layer between 700-500 mb
   supporting around 200 J/kg MUCAPE.  A few lightning flashes have
   been detected with the weak convection as it has moved east this
   morning between Wichita Falls and Denton.  As a result, a quick
   convective burst of snow/sleet is anticipated.  As the mid-level
   trough and strong mid to upper forcing for ascent gradually shifts
   east this morning to northeast TX/southeast OK, the precipitation
   will diminish from west to east.

   ..Smith.. 01/11/2020

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

   ATTN...WFO...FWD...OUN...

   LAT...LON   33519767 33959681 33939603 33569602 33269654 33039715
               33099756 33519767