/Issued 7:03 PM CST, Friday, February 2, 2018/
Forecast maps for Saturday’s snow event
18z NAM-Nest Simulated Radar Forecast starting this evening, ending late Saturday night
Snow (Blue colors)
There could be a little bit of snow around parts of the Northland tonight but this shouldn’t amount to much, perhaps up to one half inch in a few locations. The main snow event will occur during the day Saturday with the heaviest snowfall amounts expected to occur near or south of Highway 2 in northeast Minnesota, including over all of northwest Wisconsin.
Link to Road Conditions
Wisconsin – https://511wi.gov/map
A very cold start to the day with widespread lows in the teens and 20s below zero in northeast Minnesota and northwest Wisconsin. Note: Duluth Airport dropped to 13 below this morning. Temperatures this afternoon warmed up a bit with highs generally in the single digits to around 10 above zero.
The big weather story through the weekend will be the upcoming snow event for Saturday followed by more frigid temperatures for Saturday night and Sunday.
Saturday’s snow event will have a good baroclinic zone (Big temperature gradient) to work with as an area of low pressure tracks east, or slightly east/northeast out of western South Dakota/western Nebraska. There should be a decent amount of lift accompanying this system which should last roughly 4 to 6 hours in any given location, this is when our greatest accumulations should occur with lighter snowfall expected before and lingering a little while after the best lift moves through. Snowflake size should be rather large at times with a favorable Dendritic Growth Zone expected especially over southern portions of the Northland.
Note: There is a chance for some lake enhanced snow Saturday along the North Shore of Lake Superior with east or northeast winds, this threat will then shift to the South Shore Saturday night as winds switch to the north or northwest.
Note: There is still a chance that the greatest snowfall amounts (2-4″+) sets up a little further south from what model data was showing today, and from what my snowfall map above is showing, and if this is the case, then snowfall totals would likely be in the 1 or 2 inch range in Duluth with even lower totals farther north.
After the snow moves away Saturday night it will be followed by more very cold temperatures with subzero lows likely from Sunday morning through most of the rest of next week while daytime highs will only be in the single digits to around 10 above zero. Wind chills will also be dangerously low at times, and wind chill headlines will likely be needed at times later this weekend into next week.