Tropical Storm Arthur reached hurricane strength early Thursday, with winds of 75 mph as it churned north toward the Carolinas. Arthur, the first named storm of the 2014 Atlantic season, was 190 miles south-southeast of Cape Fear, North Carolina, at 4:50 a.m. on Thursday. Hurricane warnings have been issued for parts of the North Carolina coast. Local authorities have ordered a mandatory evacuation on the Outer Banks' Hatteras Island and a voluntary evacuation on Ocracoke Island. Read more at NBC News.