Mesolows over the Great Lakes

A very interesting visual satellite picture from the afternoon of February 20th, it shows two mesolows; one moving across southern Lake Michigan and another over southern Lake Huron. These smaller scale features can have an appearance of tropical systems such as Hurricanes or Tropical Storms but that is where the similarities end. They are created by a fairly rare temperature and wind pattern across the Great Lakes, but when they do form during the winter months they can produce a period of very heavy snow.