November 11
- 1911 – A major tornado outbreak hit the Great Lakes region. The worst damage came from an F4 tornado that hit Janesville, Wisconsin, killing nine people. Survivors were faced with blizzard conditions within an hour of the tornado's passage. An F2 tornado hit Owosso, Michigan at 11:11 PM, killing two people, and came to be called the "tornado of the elevens." Two others were killed by an F3 tornado near Easton, Illinois.