Records of of snow or more have been set in many communities in this area. The Keweenaw Peninsula averages more snowfall than any other location east of the Mississippi River. Because of the howling storms across Lake Superior, which cause dramatic amounts of precipitation, it has been said that the lake-effect snow makes the Keweenaw Peninsula the snowiest place east of the Rockies. Herman averages of snow every year. Lake-effect snow can cause blinding whiteouts in just minutes, and some storms can last for days. Hancock is found frequently on lists of the snowiest cities in America.