Another weak low pressure has pushed out of southern Canada, bringing a swath of new snow to the Midwest Tuesday and adding to the parade of small storms that have been moving through.
These waves of energy, bringing smaller amounts of snow accumulations are called Alberta Clippers. They have been sprinkling fresh snow through the northern Plains, Great Lakes and mid-Atlantic since the end of January.
Snow started the day in Upper Michigan, Wisconsin, Iowa and Minnesota and was rolling across lower Michigan and into northern Illinois and Indiana during the afternoon.
But unlike the last few clippers that have pushed through the Great Lakes recently, the track for this storm is slightly farther north.

Link: http://www.accuweather.com/en/weath
er-news/more-clipper-snow-wisconsin-to/5605890