Dexter became a tropical storm on Saturday night. As of late Monday, it was stirring up in the Atlantic Ocean about 345 miles north of Bermuda, the NOAA said. It had maximum sustained winds of 40 mph on Monday and was moving northeast.

Forecasters are keeping an eye on two additional systems in the Atlantic with potential for development later this week.

Tropical Storm Dexter has developed off the coast of the United States, here's where it is expected to go and when.