The New York Stock Exchange said it will shut its trading floor starting tomorrow and invoke contingency plans to move all trading to NYSE Arca, its electronic exchange, as Hurricane Sandy heads toward the city.

“The re-opening of physical trading floor operations is subject to city and state determinations and local conditions; updates will be forthcoming,” NYSE Euronext (NYX) said in a statement today.

NYSE Amex Options will open electronically and NYSE MKT, formerly known as NYSE Amex, will be suspended, the exchange operator said.

To contact the editor responsible for this story: Michael P. Regan at mregan12@bloomberg.net