A large, slowly-spinning system across the northern Caribbean and southern Gulf of Mexico could develop into something serious, forecasters said.

Hurricane forecasters continue to monitor a broad area of low pressure in the Caribbean Sea and two low-pressure systems stirring in the Atlantic Ocean, according to the National Hurricane Center in Miami. The area of low-pressure in the Caribbean has a chance of developing into a tropical system early to the middle of next week, forecasters said.

The National Hurricane Center is tracking three systems Friday night, two in the Atlantic Ocean and one in the Caribbean Sea.

A​ tropical storm is expected to form in the northwest Caribbean or southern Gulf of Mexico late in the week ahead, but details on its potential intensity, track and timing remain uncertain. Interests along the entire U.

A tropical system in the Caribbean Sea could develop as it moves northward into the Gulf of Mexico, the National Hurricane Center says.

The next tropical threat to the U.S. is brewing in the Caribbean as there are increasing signs that the ingredients needed for a tropical storm or even a hurricane are coming together.