MESOSCALE DISCUSSION 2194
   NWS STORM PREDICTION CENTER NORMAN OK
   1200 PM CST SUN DEC 09 2007
   
   AREAS AFFECTED...EAST CENTRAL OK NEWD INTO NWRN AR AND SWRN MO
   
   CONCERNING...FREEZING RAIN 
   
   VALID 091800Z - 092130Z
   
   RAIN AND MIXED FREEZING IS EXPECTED TO SWITCH TO MAINLY FREEZING
   RAIN DURING THE AFTERNOON FROM EAST CENTRAL OK NEWD INTO NWRN AR AND
   SWRN MO. PCPN RATES AROUND .05 TO .10 INCH/HOUR ARE EXPECTED WITH
   HEAVIER RATES IN SCATTERED CONVECTION/THUNDERSTORMS.
   
   COLD FRONT CONTINUED TO EASE SEWD ACROSS NWRN AR/FAR SERN OK WITH
   PROGRESSIVELY COLDER AIR SPREADING IN BEHIND THE FRONT. TEMPERATURES
   BEHIND THE FRONT ACROSS ERN OK...NWRN AR AND SWRN MO WERE GENERALLY
   BETWEEN 31-36 DEGREES...BUT SHOULD SLOWLY FALL INTO THE LOWER 30S BY
   MID AFTERNOON. PRECIPITATION SHOULD BE MAINTAINED THROUGH THE
   AFTERNOON BY SHORTWAVE TROUGH LIFTING NEWD THROUGH THE AREA AND WARM
   ADVECTION LOCATED BETWEEN 700-850 MB ALONG THE LOW LEVEL JET.
   MUCAPES AROUND 500 J/KG AND FAVORABLE THERMODYNAMIC PROFILES ABOVE
   THE COLD BOUNDARY LAYER WILL SUPPORT A FEW THUNDERSTORMS. THE MAIN
   THREAT FROM THE FREEZING RAIN WILL BE ICING OF ELEVATED
   STRUCTURES...ESPECIALLY TREES AND POWER LINES.
   
   ..IMY.. 12/09/2007
   
   
   ...NOTICE...
   SPC WINTER WEATHER MESOSCALE DISCUSSIONS WILL BE ISSUED ON A
   SCHEDULED BASIS FROM DECEMBER 1 THROUGH FEBRUARY 28...FOUR
   TIMES A DAY...AROUND 00 UTC...06 UTC...12 UTC...AND 18 UTC
   FOR SIGNIFICANT SHORT RANGE WINTER WEATHER EVENTS.
   
   ATTN...WFO...LZK...SGF...TSA...OUN...
   
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