The Outer Banks are not anchored to offshore coral reefs like some other barrier islands and as a consequence they often suffer significant beach erosion during major storms. In fact, their location jutting out into the Atlantic makes them the most hurricane-prone area north of Florida, for both landfalling storms and brushing storms offshore. Hatteras Island was cut in half on September 18, 2003, when Hurricane Isabel washed a 2,000 foot (600 m) wide and 15 foot (5 m) deep channel called Isabel Inlet through the community of Hatteras Village on the southern end of the island. The tear was subsequently repaired and restored by sand dredging by the U.S. Army Corps of Engineers. It was cut off once again in 2011 by Hurricane Irene. Access to the island was largely limited to boat access only from August to late October until another temporary bridge could be built.