This timeline documents all the storm formations, strengthening, weakening, landfalls, extratropical transitions, as well as dissipation during the 2007 Atlantic hurricane season. The season officially began on June 1, 2007, and ended on November 30, although Subtropical Storm Andrea and Tropical Storm Olga formed outside the official parameters, on May 9 and December 11, respectively. The timeline also includes information which was not operationally released, meaning that information from post-storm reviews by the National Hurricane Center, such as information on a storm that was not operationally warned on, have been included.
During the year, a total of 17 tropical cyclones, 15 tropical storms, six hurricanes and two major hurricanes formed. The most intense hurricane, Dean, tied for the seventh most intense Atlantic hurricane ever recorded as well as the third most intense Atlantic hurricane at landfall. The season was one of only four on record for the Atlantic with more than one Category 5 storm. It was the second on record in which an Atlantic hurricane, Felix, and an eastern Pacific hurricane, Henriette, made landfall on the same day. September had a record-tying eight storms, although the strengths and durations of most of the storms were low. Aside from Dean and Felix, none of the storms exceeded Category 1 intensity.