Hurricane Erin has triggered a state of emergency in North Carolina, where residents and visitors along the Outer Banks are under evacuation orders.

Hurricane Erin is double size of average storm, according to the National Hurricane Center, which is watching three other possible tropical systems develop in Atlantic

Hurricane Erin pounded the North Carolina coast with strong waves and gusty winds as it slowly moved out to sea Thursday. It was still considered dangerous for beachgoers along the U.S. East Coast. Erin lost some strength Tuesday and dropped to a Category 2 hurricane as it moved northward,