Mashable: Watch These Webcams as Sandy Hits the East Coast
http://mashable.com/2012/10/29/hurricane-sandy-webcam/
The webcams listed below should provide a good view of Hurricane Sandys arrival in New York City, on Long Island and along the Jersey Shore. Tell us in the comments if you have any others to add to this list.
New York City
Coney Island
Far Rockaways (thanks to Matt Miner)
Statue of Liberty
New York Harbor
Midwood, Brooklyn
Brooklyn Bridge
Manhattan Bridge (thanks to Amrit Richmond)
Battery Park City
Downtown Manhattan
Wall Street Bull
Ground Zero
SoHo
Chelsea
USS Intrepid
Midtown West
Empire State Building, 55th floor
New York Times Building
Times Square
Bryant Park
Columbus Circle
79th Street Boat Basin
Co-Op City in the Bronx
NYC traffic cameras
Long Island
Southampton
Shinnecock Inlet
Lincoln
Gilgo Beach
Jersey Shore
Cape May
Cape May
Point Pleasant Beach
Seaside Heights
Wildwood
New Jersey traffic cameras
-snip-
Best list of webcams for watching Sandy that I've seen so far.