High Quality Content by WIKIPEDIA articles! The Timeline of the 2005 Atlantic hurricane season documents the formations, strengthenings, weakenings, landfalls, extratropical transitions, and dissipations of the season`s tropical and subtropical storms. The 2005 Atlantic hurricane season was the most active Atlantic hurricane season in recorded history. The season saw a record twenty-eight tropical or subtropical storms of which a record four storms achieved Category 5 status. Officially beginning on June 1 2005, and lasting until November 30, the 2005 season persisted into January 2006 due to continued storm activity.