South Carolina is particularly vulnerable to severe storms like Hurricane Irene which is expected to hit the United States as a category four storm tomorrow. Severe weather is a constant threat to the State's valuable tourism industry as they cause heavy beach erosion and threaten the Port of Charleston and other critical infrastructure.
Category 4 hurricane defined: wind speeds between 131 and 155 mph; waves 13-18 feet high. They "tend to produce more extensive curtainwall failures, with some complete roof structural failures on small residences. Heavy, irreparable damage and near complete destruction of gas station canopies and other wide span overhang type structures are common. Mobile and manufactured homes are leveled. These storms cause extensive beach erosion, while terrain may be flooded far inland. Total and long-lived electrical and water losses are to be expected, possibly for many weeks. Source: Wikipedia and CBS News