Mr. Holloway and Deputy Mayor for Health and Human Services Linda Gibbs introduced the new flood-zone map Friday as part of the city's Hurricane Sandy After Action report, an overview of the emergency response to one of the worst storms in New York City's history.

WSJ: After Sandy, More in New York City Could Face Storm Evacuations

That covered an area far beyond the official 30km restriction zone (see map).

ECONOMIST: The mounting human costs of Japan��s nuclear disaster

When you enter an open zone area, your map populates on the lower screen as you move about.

FORBES: Etrian Odyssey IV Review

The U.S. Navy initiated reconnaissance flights to map the disaster zone and was moving the aircraft carrier USS Ronald Reagan into position to assist the Japanese government with relief efforts, defense officials said.

CNN: Widespread destruction from Japan earthquake, tsunamis