MESOSCALE DISCUSSION 0137
   NWS STORM PREDICTION CENTER NORMAN OK
   0646 AM CST SUN FEB 10 2013
   
   AREAS AFFECTED...PORTIONS OF SRN AND CNTRL MN...ERN SD AND FAR SE ND
   
   CONCERNING...HEAVY SNOW 
   
   VALID 101246Z - 101845Z
   
   SUMMARY...SNOWFALL WILL INCREASE IN COVERAGE/INTENSITY THROUGH
   MIDDAY. RATES MAY APPROACH 1-1.5 INCHES PER HOUR AT TIMES.
   ADDITIONALLY...SOME BLOWING AND DRIFTING OF SNOW DUE TO BREEZY ELY
   WINDS WILL RESULT IN REDUCED VISIBILITY AND HAZARDOUS TRAVEL
   CONDITIONS.
   
   DISCUSSION...THE SFC LOW OVER SW NEB HAS BEGUN TO LIFT NEWD INTO
   CNTRL NEB THE LAST COUPLE OF HOURS. AS THE LOW CONTINUES TO TRACK
   TOWARD NW IA/SRN MN...BAND OF MODERATE TO HEAVY SNOW WILL FILL IN
   ACROSS THE MCD AREA...AS FAVORABLE DEFORMATION ZONE SHIFTS EWD.
   SNOWFALL RATES WILL FIRST INCREASE ACROSS ERN SD INTO SW MN THROUGH
   15Z THIS MORNING. THEREAFTER...HIGHER RATES/HEAVIER SNOW BAND SHOULD
   PIVOT NORTHWARD TOWARD CENTRAL MN...INCLUDING THE TWIN CITIES METRO
   AREA. AT LEAST SOME WEAK ELEVATED INSTABILITY THROUGH FAVORABLE
   DENDRITIC GROWTH LAYER IS EVIDENT IN FORECAST SOUNDINGS AND RECENT
   LIGHTNING STRIKES ACROSS FAR N-CNTRL IA CONFIRM THIS. AS
   SUCH...CONVECTIVELY ENHANCED SNOW BANDS MAY RESULT IN RATES OF 1-1.5
   INCHES AN HOUR AT TIMES. ADDITIONALLY...BREEZY ELY SFC WINDS AROUND
   15-25 MPH WILL LEAD TO BLOWING/DRIFTING SNOW AND REDUCE VISIBILITIES
   OF LESS THAN 1/2 MILE...CREATING HAZARDOUS TRAVEL CONDITIONS.
   
   ..LEITMAN.. 02/10/2013
   
   
   ATTN...WFO...DLH...ARX...MPX...FGF...FSD...ABR...
   
   LAT...LON   43489624 43279668 43369730 43879787 44349803 45499782
               45749767 46229737 46489696 46709624 46799547 46689423
               46259301 45689205 44929171 44409188 44149304 43949405
               43719541 43489624