Lake Michigan water levels and a sharp cold front top the list of Michigan weather events on this day in history. From the National Weather Service archives here are the events that happened on February 21.
1930 - The temperature rose to a record high of 63° in Detroit. This day was one of a three-day record high streak from the 20th with 61° to the 22nd with 65°. Saginaw also experienced this three day streak with temperatures of 62° on the 20th, 64° on the 21st and 67° on the 22nd. In West Michigan Grand Rapids observes a record of 61° on the 20th, 66° on the 21st and 67° on the 22nd. Muskegon sees a record of 58° on the 21st and 55° on the 22nd. Lansing observes a record of 62° on the 21st and 66° on the 22nd.
1986 - Lake Michigan water levels are near record highs. Coastal flooding and erosion is a concern during winter storms along the shore.
2003 - A sharp cold front settled south across the Upper Peninsula overnight on February 20th and 21st. As a wave of low pressure moved east along this arctic boundary, snow broke out across mainly the eastern half of Upper Michigan. There was a narrow band of heavy snow from Iron Mountain to Newberry. By the time the snow tapered off during the evening on the 21st, as much as 8 inches of snow had fallen just west of Newberry. An intense narrow band of heavy snow set up from west to east across east upper Michigan in Chippewa and Mackinac counties. Snowfall totals of up to 10 inches fell within this band. Little or no measurable snow was reported just outside of the band of heavy snow.