US on watch as impending Tropical Storm Imelda threatens south-east

Weather system expected to become tropical storm as Hurricane Humberto weakens but still remains category 4

A weather system that is forecast to become Tropical Storm Imelda later on Sunday before approaching the coast of South Carolina as a hurricane in the coming days was causing disruption in the Bahamas and nearby islands.

Meanwhile, Hurricane Humberto weakened very slightly but remained a strong category 4 storm in the Atlantic, threatening Bermuda.