(CNN) -- Tropical Depression Four strengthened into a tropical storm overnight, but it was not expected to hit land, the National Hurricane Center said Tuesday.
The tropical storm was named Colin, and it was churning in the Atlantic Ocean, about 945 miles east of the Lesser Antilles islands, the center said.
Tropical Storm Colin had maximum sustained winds of about 40 mph, the hurricane center said in its 5 a.m. ET advisory.
Tracking maps show the storm system turning northwest in the Atlantic in the next couple days but did not show the system hitting land.