A somewhat rare November storm system is gathering steam in the Caribbean Sea. Tropical Storm Sara will eventually make a turn to the east and Florida.

A storm system, which will earn the name “Sara,” is expected to form soon in the Caribbean, and could affect the United States down the road. It’s too early to know exactly where the storm will go once it forms and what areas will be affected — particularly because the system has no established center of circulation yet.

Lots of factors in play but Tropical Storm Sara is expected to form this week and could become a major hurricane threatening the US next week.