MESOSCALE DISCUSSION 0131
   NWS STORM PREDICTION CENTER NORMAN OK
   1153 PM CST SAT FEB 09 2013
   
   AREAS AFFECTED...ERN-NERN IA / SERN MN
   
   CONCERNING...FREEZING RAIN 
   
   VALID 100553Z - 101100Z
   
   SUMMARY...FREEZING RAIN WILL DEVELOP INITIALLY OVER E-CNTRL AND
   N-CNTRL IA LATE TONIGHT AND SPREAD NEWD TOWARDS THE MS RIVER WITH
   FREEZING RAIN RATES UP TO AROUND 0.05 INCH PER 3 HOURS.
   
   DISCUSSION...A BAND OF LIGHT RAIN FROM W-CNTRL IA INTO NERN MO IS
   MOVING NEWD AS THE MAIN BODY OF THE WARM CONVEYOR BELT FROM THE
   CNTRL HIGH PLAINS CYCLONE APPROACHES THE REGION.  AS THIS
   OCCURS...H85 MOISTURE TRANSPORT WITHIN THE ENVELOPE OF A 60 KT LLJ
   --CENTERED OVER THE LOWER MO VALLEY-- WILL ACT TO MOISTEN THE
   COLUMN.  MODEL FORECAST SOUNDINGS HAVE SHOWN AN INCREASE IN PW
   CONCURRENT WITH GPS PW DATA LOCATED UPSTREAM OF THE AREA.  THIS SAME
   SUITE OF MODEL SOUNDINGS SHOW THE COLUMN SATURATING BEGINNING AROUND
   07 UTC ON THE SW PORTION OF THE DISCUSSION AREA AND STEADILY
   DISPLAYING THIS TREND NEWD WITH TIME DURING THE LATE OVERNIGHT
   HOURS.  DESPITE INITIAL LIMITED MOISTURE...STRONG/INCREASING
   ISENTROPIC ASCENT OVER THE ERN HALF OF IA INTO SERN MN DURING THE
   07-11 UTC PERIOD WILL PROBABLY SUPPORT PRECIP RATES AROUND 0.05 INCH
   PER 3 HOURS.  MODEL SOUNDINGS SHOW TEMPS PRIMARILY STAYING AOB
   FREEZING...RESULTING IN FREEZING RAIN BEING THE PREFERRED P-TYPE.
   
   ..SMITH.. 02/10/2013
   
   
   ATTN...WFO...DVN...ARX...MPX...DMX...
   
   LAT...LON   41789106 41809188 43069387 43699358 43899293 43819230
               42989083 42299047 41789106