MESOSCALE DISCUSSION 0187
   NWS STORM PREDICTION CENTER NORMAN OK
   0927 AM CST THU FEB 21 2013
   
   AREAS AFFECTED...SRN/CNTRL MO...FAR NERN OK...FAR SERN KS...NRN AR
   
   CONCERNING...WINTER MIXED PRECIPITATION 
   
   VALID 211527Z - 211930Z
   
   SUMMARY...PRECIPITATION WILL BECOME MORE WIDESPREAD ACROSS SRN
   MO/NRN AR...WITH A CONTINUATION OF PRECIPITATION ELSEWHERE...WITH A
   PRIMARY PRECIPITATION TYPE OF FREEZING RAIN. LIQUID EQUIVALENT OF
   GREATER THAN 0.50 INCH IS POSSIBLE BETWEEN 15-18Z WITH PRECIPITATION
   RATES ABOVE 0.10 INCH/HR...RESULTING IN SIGNIFICANT ICE
   ACCUMULATIONS.
   
   DISCUSSION...STRONG WAA ADVECTION REGIME ABOVE A COLD SURFACE LAYER
   WILL CONTINUE TO SUPPORT A LARGE PRECIPITATION SHIELD WITH EMBEDDED
   CONVECTIVE ELEMENTS ACROSS WRN OK AND ARK AS IT MOVES NEWD INTO SRN
   MO AND NRN AR. 12Z SGF AND TOP SOUNDINGS SHOW A PROFILE FAVORABLE
   FOR FREEZING RAIN ACROSS SRN MO AND NRN AR WITH A TRANSITION ZONE
   INCLUDING BOTH FREEZING RAIN AND SLEET FARTHER N ACROSS CNTRL MO.
   WIDESPREAD TSTM ACTIVITY WILL ALLOW FOR SIGNIFICANT ICE
   ACCUMULATIONS WITH PRECIPITATION RATES GENERALLY ABOVE 0.10 INCH/HR
   WITH RATES LOCALLY APPROACHING 0.30 INCH/HR...ESPECIALLY ACROSS SRN
   MO AND NRN AR.
   
   ..MOSIER.. 02/21/2013
   
   
   ATTN...WFO...PAH...MEG...LSX...LZK...SGF...EAX...TSA...TOP...
   ICT...
   
   LAT...LON   37779530 38099501 38429408 38409205 38259119 37809040
               37289014 36738999 36249029 35939127 35919297 36119415
               36399476 37069548 37779530