This refers to hybrid storms that combine elements of tropical and extratropical cyclones. It s possible that some storms listed as tropical storms or maybe even hurricanes in earlier years were really subtropical storms or even extratropical storms. Many extratropical storms , especially in the winter, can be as strong as a tropical storm or maybe even a weak hurricane. These are not listed here. May 17 21.
Tropical storm hits Cuba, Bahamas.
Unisys archive . Hurricane hits eastern Canada. Unisys archive . May 16 21. Hurricane stays at sea.