A look at preparations in the potential path of Hurricane Isabel.

NORTH CAROLINA: More than 300,000 people told to evacuate the coast and barrier islands. Gov. Mike Easley (search) declared a state of emergency, putting the National Guard (search) and state police on alert. Hurricane warning in effect for nearly entire coast. State officials opened a satellite emergency response command center.

VIRGINIA: More than 160,000 residents urged to leave their homes in low-lying areas. "This is, in terms of predictions, perhaps the worst storm we've seen in decades," Gov. Mark R. Warner (search) said. Hurricane warning posted along the Virginia coast and much of Chesapeake Bay.

DISTRICT OF COLUMBIA: Mayor Anthony A. Williams declared a state of emergency. City schools closing Thursday and Friday. Regional transit agency suspending all bus and subway service beginning Thursday morning, ahead of Isabel.

MARYLAND: Officials opened the state's Emergency Operations Center and canceled leave for essential state employees. Emergency workers' leaves also canceled in Baltimore. Forty-eight state parks and six state forests closed; campers there ordered to evacuate. Tropical storm warning posted along coast.

DELAWARE: Gov. Ruth Ann Minner declared state of emergency effective Thursday morning, ordered the mandatory evacuation of low-lying areas and the closing of public schools. State offices also will be closed Thursday and Friday except for essential personnel. Tropical storm warning posted along coast.

NEW JERSEY: Officials relocating about 1,600 inmates from Southern State prison in Cumberland County. Fifteen National Guard trucks dispatched to Cape May County to assist with evacuations should they prove necessary. Aircraft from McGuire Air Force Base flown to Midwest. Tropical storm warning posted along coast.

PENNSYLVANIA: Forecasters said 9 inches or more of rain could fall in the west-central part of the state and warned of widespread flooding and the possibility of tornadoes. The state emergency management agency urged those living in flood-prone areas to establish an evacuation route.

WEST VIRGINIA: Officials feared the storm's potential rainfall in the hilly and already saturated Eastern Panhandle. Up to 12 inches of rain was possible. The Red Cross planned to set up shelters in 28 counties.

SOUTH CAROLINA: Tropical storm warnings posted along coast. Charleston officials prepared to dispatch volunteer city workers to help Virginia Beach, Va., and Elizabeth City, N.C., if needed in the aftermath.