The first tropical storm of the season could form by this weekend.
Forecasters with the National Hurricane Center are monitoring a non-tropical low pressure system about 800 miles east of Bermuda.
It has a 70% chance of becoming Tropical Storm Ana by Saturday, forecasters said, and a 90% chance over the next five days.
The system is expected to gain strength and produce gale-force winds as it moves to the north later Thursday, followed by a turn to the west and southwest.
Once it moves into the warmer waters Thursday night into Friday, forecasters say it will likely become a subtropical cyclone near Bermuda.
However, the system is forecast to turn to the north and northeast, and could break apart late this weekend into Monday before threatening land.
