The 2015 Atlantic hurricane season was a slightly below average season of tropical cyclone formation in the Atlantic basin. A total of 12 tropical cyclones formed, including 11 named storms, 4 hurricanes, and 2 major hurricanes. The strongest storm - Hurricane Joaquin - fell just short of category 5 status as a strong category 4 with maximum sustained winds of 155 mph and a minimum pressure of 931 mbar. The below-average activity in this season was likely caused by a Very Strong El Niño event. Most pre-season forecasts correctly predicted a below average season, although the season was slightly more active than most agencies predicted. Even though the Atlantic hurricane season usually runs between June 1 and November 30, the first storm, Ana, formed on May 8 as a Subtropical Storm
Tropical Storm Bill formed over the far northwestern Gulf of Mexico and made landfall along the Texas coast on Matagorda Island. Bill produced heavy rains and flooding while it moved across eastern Texas and Oklahoma.
Danny was a compact, Cape Verde-type category 3 hurricane (on the Saffir-Simpson Hurricane Wind Scale) that moved generally westward in the deep tropics throughout its lifetime. Danny degenerated into a tropical wave while it moved through the northern Leeward Islands and into the northeastern Caribbean Sea, causing no significant damage.
Joaquin was a category 4 hurricane (on the Saffir-Simpson Hurricane Wind Scale) whose strong winds and storm surge devastated Crooked Island, Acklins, Long Island, Rum Cay, and San Salvador in the central and southeastern Bahamas. Joaquin took the lives of 34 people—all at sea—including the 33 crewmembers of the cargo ship El Faro, which sunk during the storm northeast of Crooked Island. Joaquin is the strongest October hurricane known to have affected the Bahamas since 1866 and the strongest Atlantic hurricane of non-tropical origin in the satellite era.
Kate was a late-season tropical cyclone that became a category 1 hurricane (on the Saffir-Simpson Hurricane Wind Scale) while moving east-northeastward over the north Atlantic.
On April 25, 2016, at the 38th Session of the World Meteorological Organization's Regional Association Hurricane Committee, the WMO retired two names, Erika and Joaquin from its rotating name lists. They were replaced with Elsa and Julian, respectively, for the 2021 Atlantic hurricane season.