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Mesoscale Discussion 84
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   Mesoscale Discussion 0084
   NWS Storm Prediction Center Norman OK
   0501 PM CST Wed Feb 21 2018

   Areas affected...portions of northeast OK...extreme southeast
   KS...southwest and central MO and extreme northwest AR

   Concerning...Winter mixed precipitation 

   Valid 212301Z - 220400Z

   SUMMARY...Light freezing rain, mixing with sleet and snow at times,
   will expand northeast from northeastern OK into southwestern and
   central MO this evening. Freezing rain rates are expected to remain
   light.

   DISCUSSION...Light precipitation is expanding northeast, roughly
   along the I-44 corridor from northeast OK into southwest MO early
   the evening. Weak forcing for ascent and warm advection will be
   sufficient for continued light precipitation expanding northeast
   with time through the evening. Surface temperatures across the MCD
   area ranged from around 27 to 30 degrees F as of 23z. The surface
   cold front may slosh westward a bit this evening, but temperatures
   are expected to remain below freezing. Forecast thermodynamic
   profiles will mainly favor light freezing rain, though some sleet
   and/or snow could mix in at times. The lack of stronger forcing for
   ascent should limit precipitation rates, and freezing rain rates at
   or below 0.05 inches per 3 hours are expected.

   ..Leitman.. 02/21/2018

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

   ATTN...WFO...LSX...SGF...TSA...ICT...

   LAT...LON   36719569 36519604 36299624 36079632 35839624 35579584
               35549556 35659515 36059431 36829257 37409129 37679114
               37919118 38079133 38189153 38249180 38259204 38199233
               37539409 37209480 36719569 

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Page last modified: February 22, 2018
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