heard, the water is flooding into new york city. And it's where we're tracking the national damage and also the winds are bearing down on the city of skyscrapers tonight, "20/20" anchor chris cuomo is... See More
heard, the water is flooding into new york city. And it's where we're tracking the national damage and also the winds are bearing down on the city of skyscrapers tonight, "20/20" anchor chris cuomo is covering this city in this storm. Chris. Reporter: Hello, diane. You know, we wish we didn't have to be standing in the water but it's moving too quickly to change positions. Already we'v more water from sandy than we did last year from irene. We're being told that protectively they'll shut off power down here soon so we hope everybody has gotten somewhere safe. Sandy is coming. The question is, how will new york city handle it? The big apple has been shut down to its core. Lower manhattan looks like a ghost town. Wall street will be closed for consecutive days because of weather for the first timing SINCE THE 1800s IN A PLACE WHERE You have to look up to see where many live, skyscrapers are a concern. Wind speeds on the ground are half those on the top floors. Sometimes forcing buildings to sway. The further up you live the more reason you should close your drapes and just stay away from windows. Reporter: Watch this bath water slosh in a brookline high-rise in gusts of barely 40 miles an hour. Half what's expected from sandy. At ground zero still under construction special precautions as teams worked to latch down machinery. Fears heightened by that ten-ton steel arm dangling from a high-rise building. But the main threat from sandy is storm surge. Not just flooding, surge effect hits like a liquid fist powered by 80-mile-an-hour winds. Sandy brings potentially an extra 6 to 12 feet of sand enriver flow that could fill manhattan like a basin. 375,000 people have been told to evacuate. Directed to 76 shelters around the city. But this is new york and that means there are others who are deciding to stick. A ten-foot wall of water and people want to stick. Have a couple of pints. We sink or swim. It's a community in new york city, no better place. Reporter: The truth is, this is no joking matter, diane, we're still almost two hours from the full moon high tide. So we don't know what sandy will bring. 17 miles southeast of here, a bowie measured a wave at 29 feet. Still 17 miles away but it just shows that it's no joking matter. Hopefully tomorrow we'll be able to say sandy wasn't as bad as we expected but right now we ask everyone please prepare for the worst.
This transcript has been automatically generated and may not be 100% accurate.