New Yorkers can type in their address "to determine if they live in a hurricane flood zone."
Let's try 11 Wall Street.
Oh, dear. It looks like that address is in Zone C:
Residents in Zone C may experience storm surge flooding from a MAJOR (Category 3 & 4) hurricane making landfall just south of New York City. A major hurricane is unlikely in New York City, but not impossible.That's okay. The New York Stock Exchange isn't that important. Plus, "A major hurricane is unlikely in New York City." Wall Street knows a thing or two about risk.
A Category 3 hurricane in New York would behave like a Category 4 in the South. A Northern hurricane typically travels at 34 mph, about triple the speed of a Southern storm.Why would anyone build the largest securities market in the country in a flood zone?
A major hurricane would produce a storm surge of up to 30 feet, with flooding in all five boroughs, airport and highway closings, and massive traffic jams. The lower Manhattan flood zone for a hurricane making landfall just south of the city includes the World Trade Center site, Wall Street and police headquarters. City Hall - which sits on higher ground and is located toward the middle of Manhattan - might turn into a small island as the East and Hudson rivers converge to its south. If that sounds implausible, remember that it has happened before: A September 1821 hurricane raised tides by 13 feet in an hour and flooded Manhattan from its southern tip to Canal Street.
Today, that would knock out most of Wall Street and many subway lines, and flood tourist spots like South Street Seaport.