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Mesoscale Discussion 113
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   MESOSCALE DISCUSSION 0113
   NWS STORM PREDICTION CENTER NORMAN OK
   1000 AM CST WED MAR 04 2015

   AREAS AFFECTED...CENTRAL AND SOUTHWEST OKLAHOMA INTO PORTIONS OF THE
   TEXAS PANHANDLE AND WESTERN NORTH TEXAS

   CONCERNING...WINTER MIXED PRECIPITATION 

   VALID 041600Z - 042100Z

   SUMMARY...MIXED WINTER PRECIPITATION WILL SPREAD EAST/NORTHEAST
   ACROSS THE TEXAS PANHANDLE INTO SOUTHWEST AND CENTRAL OKLAHOMA OVER
   THE NEXT SEVERAL HOURS. A BRIEF PERIOD OF FREEZING RAIN WILL BE
   POSSIBLE BEFORE TRANSITIONING TO SLEET FOR MOST OF THE DAY.
   EVENTUALLY...A TRANSITION TO SNOW IS EXPECTED...BUT NOT UNTIL LATE
   AFTERNOON/EARLY EVENING. PRECIPITATION RATES SHOULD GENERALLY REMAIN
   LIGHT...BUT MAY LEAD TO TRAVEL PROBLEMS.

   DISCUSSION...MIXED WINTER PRECIPITATION WAS DEVELOPING IN WEAK WARM
   AIR ADVECTION OVER A SOUTHWARD PROGRESSING COLD FRONT AND BAND OF
   850 MB FRONTOGENESIS. THIS BAND OF PRECIPITATION STRETCHED FROM THE
   TX PANHANDLE/SOUTH PLAINS NORTH/NORTHEAST TOWARD CENTRAL AND
   NORTH-CENTRAL OK. SURFACE OBSERVATIONS SHOWED A MIXED BAG OF
   PRECIPITATION TYPES INCLUDING SNOW...SLEET AND FREEZING RAIN. COLDER
   AIR WILL CONTINUE TO OOZE SOUTHWARD THROUGH THE DAY AND ANY PERIOD
   OF FREEZING RAIN SHOULD BE BRIEF AS VERTICAL TEMPERATURE PROFILES
   COOL AND THE BOUNDARY LAYER SUB-FREEZING DEPTH INCREASES. AS
   SUCH...A FAIRLY QUICK TRANSITION TO SLEET IS EXPECTED...BEFORE
   FINALLY CHANGING TO SNOW LATE THIS AFTERNOON OR EVENING FROM CENTRAL
   INTO SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS. PRECIPITATION RATES
   GENERALLY SHOULD BE LIGHT WITH PERHAPS BRIEF PERIODS OF MODERATE
   INTENSITY.

   ..LEITMAN.. 03/04/2015


   ATTN...WFO...OUN...LUB...AMA...

   LAT...LON   35579953 36329829 36469783 36349723 36149694 35879676
               35499687 35089728 34529790 34389819 33969938 33690065
               33740149 34110188 34580188 34990158 35579953 

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Page last modified: March 04, 2015
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