MESOSCALE DISCUSSION 0140
   NWS STORM PREDICTION CENTER NORMAN OK
   1257 PM CST SUN FEB 10 2013
   
   AREAS AFFECTED...ERN ND...NRN MN...NWRN WI
   
   CONCERNING...HEAVY SNOW 
   
   VALID 101857Z - 110000Z
   
   SUMMARY...A SWATH OF HEAVY SNOWFALL IS FORECAST TO CONTINUE TO SHIFT
   NWD AHEAD OF A CYCLONE POSITIONED OVER THE MID-MO VALLEY. RATES OF
   1-1.5 IN/HR CAN BE EXPECTED TO DEVELOP ACROSS ERN ND...NRN MN...AND
   FAR NWRN WI.
   
   DISCUSSION...18Z SFC ANALYSIS PLACES A SFC LOW NEAR KSUX...WITH AN
   ATTENDANT OCCLUDED FRONT EXTENDING S-SEWD ACROSS SWRN IA AND WRN MO.
   IR/WATER VAPOR SATELLITE IMAGERY REFLECT AN ASSOCIATED MATURE UPPER
   CYCLONE...WITH AN ATTENDANT SWATH OF CLOUD COVER/PRECIPITATION
   EXPANDING N-NEWD TOWARDS THE CANADIAN BORDER. ISENTROPIC LIFT WITHIN
   THE WRN BRANCH OF THE WARM CONVEYOR BELT...COMBINED WITH MID-LEVEL
   DCVA AND UPPER DIVERGENCE...WILL CONTINUE TO PROVIDE SUFFICIENT
   DEEP-LAYER ASCENT TO MAINTAIN SNOWFALL RATES OF 1-1.5 IN/HR WITHIN
   THIS AREA OF PRECIPITATION. ADDITIONALLY...SOME LOCALIZED CONVECTIVE
   ENHANCEMENT OF RATES MAY OCCUR AS MORNING OBSERVED SOUNDINGS AND
   MODEL FORECAST SOUNDINGS INDICATE A LAYER OF STEEP MID-LEVEL LAPSE
   RATES CO-LOCATED WITH THE DENDRITIC GROWTH LAYER. AN ABRUPT
   CESSATION TO PRECIPITATION WILL OCCUR ALONG THE SRN EDGE OF THE
   PRECIPITATION SWATH LATER THIS AFTERNOON ALONG THE LEADING EDGE OF A
   DRY AIR INTRUSION WRAPPING AROUND THE CYCLONE...BUT ENHANCED RATES
   SHOULD PERSIST ACROSS MOST OF THE HIGHLIGHTED AREA THROUGH 00Z.
   
   ..ROGERS.. 02/10/2013
   
   
   ATTN...WFO...DLH...MPX...FGF...
   
   LAT...LON   46199589 46259693 46549759 48619766 48919699 48599388
               47959164 46519039 45869053 45299115 45239188 45839391
               46199589