The index of Erika Cheetham's book "The Prophecies of Nostradamus -The Man Who Saw Tomorrow," under the heading "New York City," yields a reference to Nostradamus Quatrain #6-97 that describes a "BOMBING OF NEW YORK".
Another reference is labelled "attack on," and refers to Quatrain #1-87 which is the quatrain that accurately describes the 9/11/2001 attack on the World Trade Center's "towers or skyscrapers".
An additional index reference to Quatrain #9-92 mentions a city named "cite neuf" which is spelled differently from the "cite neufve" name used in the previous references, and thus may not refer to New York at all.