Hurricane Joaquin was a powerful tropical cyclone in 2015 and one of the strongest hurricanes on record to affect the Bahamas. It evolved from a non-tropical low to a tropical depression, becoming a Category 4 major hurricane on the Saffir–Simpson scale on October 1. On October 3, Joaquin acquired sustained winds of 155 mph (250 km/h). Between October 1 and 3, it caused extensive damage on Acklins, Crooked Island, Long Island, Rum Cay, and San Salvador Island.