MESOSCALE DISCUSSION 0133
   NWS STORM PREDICTION CENTER NORMAN OK
   0138 AM CST SUN FEB 10 2013
   
   AREAS AFFECTED...WEST-CENTRAL/NORTH-CENTRAL NEB AND SOUTH-CENTRAL SD
   
   CONCERNING...HEAVY SNOW 
   
   VALID 100738Z - 101245Z
   
   SUMMARY...HEAVY SNOW WILL CONTINUE/DEVELOP NORTHEASTWARD FROM
   WEST-CENTRAL NEB INTO NORTH-CENTRAL NEB/SOUTH-CENTRAL SD THROUGH THE
   EARLY MORNING HOURS. SNOWFALL RATES OF 1-2 IN/HR WILL BE POSSIBLE
   WITHIN THE MOST INTENSE SNOW BANDS.
   
   DISCUSSION...WATER VAPOR IMAGERY FEATURES EXIT REGION OF POLAR
   JET/LEADING PORTION OF A CONSIDERABLE UPPER TROUGH SHIFTING
   EAST-NORTHEASTWARD OVER THE CENTRAL HIGH PLAINS. ALONG/WEST OF A
   SURFACE FRONT THAT ANGLES FROM NORTHWEST KS INTO NORTH-CENTRAL
   NEB...REGIONAL RADAR MOSAIC/IR SATELLITE IS ALREADY INDICATIVE OF A
   CONTINUALLY ORGANIZING BAND OF HEAVY SNOW WITHIN A GENERAL
   SOUTHWEST-NORTHEAST ORIENTED CORRIDOR ACROSS
   WEST-CENTRAL/NORTH-CENTRAL NEB. 
   
   THIS SAME TREND IS LIKELY TO CONTINUE THROUGH THE EARLY MORNING
   HOURS AS THE CYCLONE CONTINUES TO DEEPEN/CLOSE AND OTHERWISE SLOWLY
   DEVELOP EAST-NORTHEASTWARD. AS SUCH...HEAVY SNOW IS EXPECTED TO
   DEVELOP/INTENSIFY INTO NORTH-CENTRAL NEB/SOUTH-CENTRAL SD THROUGH
   12Z-15Z IN CONJUNCTION WITH LOW-MID LEVEL FRONTOGENETICAL FORCING.
   THE PROXIMITY OF WEAK POTENTIAL INSTABILITY...WITH ONGOING TSTMS
   ACROSS FAR NORTHWEST KS AND NEARBY UPPER DRY SLOT PER WATER VAPOR
   IMAGERY...SUGGESTS A HIGH PROBABILITY OF CONVECTIVE ENHANCEMENT TO
   SNOWFALL RATES. ACCORDINGLY...1-2 IN/HR SNOWFALL RATES CAN BE
   EXPECTED WITH THE MOST INTENSE PORTIONS OF WHAT SHOULD AN EVOLVING
   APPROXIMATELY 50 MILE WIDE HEAVY SNOW BAND.
   FURTHERMORE...INCREASINGLY STRONG NORTHERLY WINDS WILL BECOME A
   FACTOR THROUGH THE DAYLIGHT HOURS OF SUNDAY.
   
   ..GUYER.. 02/10/2013
   
   
   ATTN...WFO...FSD...ABR...LBF...UNR...
   
   LAT...LON   43749872 42819950 41690021 41060107 41310197 41800206
               42800179 43790076 44389971 44199877 43749872