June 18
- 1939 – An F4 tornado moved through the Minneapolis–Saint Paul area, destroying 40 homes in Anoka, Maple Grove, and Champlin, killing nine people and injuring 222. Some homes were swept away. Four people died in a car that was thrown 300 yards.
- 2001 – An F3 tornado damaged or destroyed 240 buildings in Siren, Wisconsin, killing two people and inuring 16.