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Mesoscale Discussion 28
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MD 28 graphic

   Mesoscale Discussion 0028
   NWS Storm Prediction Center Norman OK
   0709 AM CST Tue Jan 16 2018

   Areas affected...south central into a portion of southeast Texas

   Concerning...Freezing rain 

   Valid 161309Z - 161615Z

   SUMMARY...Light freezing rain with rates up to .02 inches per hour
   mixed with some sleet at times will likely persist next few hours
   from south central into a portion of southeast Texas. The corridor
   of freezing rain should slowly shift southeast with time.

   DISCUSSION...Early this morning an arctic front has pushed into deep
   south TX with temperatures falling into the upper 20s F farther
   north across south-central TX. RUC sounding and VWP data indicate
   this front is less than 1 km deep with a pronounced warm nose around
   850 mb. A shallow convective layer is also evident between 850 and
   700 mb. Frontogenetic forcing in the 900-700 mb layer with weak
   isentropic ascent will continue to promote the development of patchy
   showers this morning with freezing rain being the primary concern.
   Some of the freezing rain may mix with sleet and change to snow
   before ending from the west as the deeper cold air spreads southward
   with time.

   ..Dial.. 01/16/2018

   ...Please see for graphic product...


   LAT...LON   30079786 30039684 30189552 29689506 28899667 28649875
               29120047 30119995 30079786 

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