The 2013 Great Lakes hurricane season was the first year on record in which tropical cyclones formed in the Great Lakes. It was very active, with 16 depressions, 12 storms, 7 hurricanes, and 2 majors forming. It officially started on June 1 and ended on November 30 (same bounds as the Atlantic). These dates conventionally delimit the period of each year when most tropical cyclones form in the Great Lakes. However, the first storm, STD One, formed on April 29, more than a month before the official start of the season.