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

The National Hurricane Center on Thursday increased odds that a developing system could head into the Gulf of Mexico and become a tropical depression or storm — while it also kept tabs on two systems in the Atlantic.

Hurricane forecasters are monitoring a tropical disturbance expected to move to the Gulf of Mexico and a new system in the Atlantic Ocean alongside remnants of Tropical Storm Gordon, according to the National Hurricane Center in Miami.