An Atlantic–Pacific crossover hurricane is a tropical cyclone that develops in the Atlantic Ocean and moves into the Pacific Ocean, or vice versa. Since reliable records began in 1851, a total of twenty-one crossover tropical cyclones have been recorded. As tropical cyclones must travel over land to pass between the Atlantic and Pacific basins, usually their low-level circulation center dissipates and degenerate into remnant lows before completing the crossing. In such instances, they are not considered the same system.

Storms

Official crossovers

Other storms

There have also been numerous tropical cyclones that formed in one basin, dissipated, and re-developed in the other, which are not considered an Atlantic-Pacific crossover hurricane by the NHC. In chronological order from earliest to most recent, they are:

Naming conventions

Prior to 2000, storms were renamed after crossing from the Atlantic into the Eastern Pacific. At the 22nd hurricane committee in 2000 it was decided that tropical cyclones that moved from the Atlantic to the Eastern Pacific basin and vice versa would no longer be renamed. Hurricane Otto in 2016 was the first storm to cross from one basin to another to apply under this rule.