MIAMI—Two tropical depressions in the Atlantic Ocean are expected to become tropical storms on Monday, with one system already generating a warning off the coast of continental Africa.
A tropical storm warning was issued for the Cabo Verde Islands due to Tropical Depression Eighteen, the U.S. National Hurricane Center said. The system was located 250 miles (405 kilometers) east-southeast of the islands with maximum sustained winds of 35 mph (55 kph). It was moving west at 12 mph (19 kph).
