[Updated at 4:53 p.m.] The former Tropical Storm Danielle is now a Category 1 hurricane on the Saffir-Simpson Hurricane Wind Scale, with maximum sustained winds of 75 mph (120 kph), the National Hurricane Center says.
Shortly before 5 p.m., the hurricane was about 1,320 miles (2,120) kilometers east of the Lesser Antilles, moving west-northwest at 17 mph, according to the hurricane center.
No coastal watches or warnings were in effect.
[Posted at 12:52 p.m.] Tropical Storm Danielle was strengthening in the Atlantic on Monday, and could become a hurricane by Monday night, the National Hurricane Center said.
As of 11 a.m. ET, the center of the storm was about 1,025 miles (1,650 kilometers) west of the Cape Verde Islands. Danielle's winds had reached about 65 mph (100 kph), shy of the 74 mph that would classify it as a Category 1 hurricane.
"Additional strengthening is forecast during the next 48 hours, and
Danielle could become a hurricane by this evening," forecasters said.