Potential Tropical Cyclone 18 likely be tropical storm

A tropical disturbance in the Caribbean Sea, now known as Potential Tropical Cyclone 18, is likely to become Tropical Storm Rafael by Monday, the National Hurricane Center said. It is expected to pass near Jamaica by Monday night. As of 4 p.m., Potential Tropical Cyclone 18 was 345 miles south of Kingston, Jamaica, and 515 miles southeast of Grand Cayman with sustained winds of 35 mph, and moving northeast at 7 mph.