Where is Tropical Storm Dexter? Atlantic hurricane season is June 1 to Nov. 30, 2025, with most tropical storm activity between August and October.

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

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.