There were dozens of waterspouts reported this October in the Great Lakes. What causes them, and why do they show up this time of year? Are they as dangerous as a tornado?
While there was no severe weather associated with Thursday's rain system, a visual often associated with severe weather was spotted on a Northern Minnesota lake.
Waterspouts are generally a warm-season phenomenon, appearing over large bodies of water like Lake Superior. Saturday afternoon (December 7), multiple cold air waterspouts were spotted near Knife River, north of Duluth on the Minnesota North Shore.