Like Rafael, stronger storms with staying power that form late in the season often originate in the Caribbean Sea. Here's more.

Rafael strengthened into a low-end hurricane Tuesday night as it approached the Cayman Islands in the central Caribbean Sea, the National Hurricane Center said. The rare November hurricane was expected to continue churning northwest toward western Cuba and enter the Gulf of Mexico this week,

Rafael is the 17th named storm of the 2024 Atlantic hurricane season, according to Colorado State University hurricane researcher Phil Klotzbach. An average year sees 14 storms. Eight named storms have developed in November since 2013.