(CNN) -- Tropical Depression Four is expected to strengthen slightly Tuesday as it churns in the Atlantic Ocean east of the Lesser Antilles, the National Hurricane Center said.
The depression was located about 1,090 miles east of the Lesser Antilles, the hurricane center said at 11 p.m. ET Monday. Tropical Depression Four could strengthen to a tropical storm Tuesday, the center said.
The system's maximum sustained winds were at 35 mph, just short of the 39 mph needed to classify it as a tropical storm, the hurricane center said. If it becomes a tropical storm, it will be given the name Colin.
Tracking maps show the storm system missing the East Coast of the United States, turning northwest in the Atlantic through Saturday.
CNN's Sean Morris contributed to this report.