[Rummyfan]

What would it look like? At least ten million dead I would say. And a clean-up that would take decades.

[Ancesthntr]

“What would it look like? At least ten million dead I would say. And a clean-up that would take decades.”

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Yes to the clean-up. That part of NYC might even be abandoned permanently.

A resounding NO to the 10 million dead. First off, the entire population of NYC (including the outer boroughs) is about 8 million. A 10 KT bomb exploded at ground level in Greenwich Village in Manhattan is way, way too small to do much beyond about 2.5 km - and would produce about 103,000 deaths and about 213,000 injuries. NO effects beyond the island of Manhattan, and you wouldn’t even have windows in the Empire State Building broken.

Check out this site: http://nuclearsecrecy.com/nukemap/ for the details of any sized-bomb in any locality. It ain’t pretty, but it isn’t some all-consuming disaster, either.

[StAnDeliver]

"What would it look like? At least ten million dead I would say. And a clean-up that would take decades."

One conventional Hiroshima-style in Manhattan? Maybe 1-2M if the wind pushed the fallout right over LI or Jersey.

10M when Gotham is 8M distributed over 300 sq. mi? You'd have to have at least five Hiroshimas perfectly distributed with the right winds, or one Tsar Bomba - neither seem likely.