U.S. digs out from deadly winter storm

It keeps me warm. I don't need a coat on because this is tough work trying to shovel all the snow. The work is keeping you warm. The work is keeping me warm. Yeah.

New York City ferries are navigating past large ice floes covering the Hudson River. While further North, Coast Guard boats were called in to free a barge frozen in place near Barrytown. And this storm brought one of Boston's top 10 biggest snow days ever. Cold Weather advisories and Extreme Cold warnings are also in effect tonight from North Dakota to Florida. And Nicole Valdes is in Nashville, Tennessee. Here in Tennessee, a quarter of a million people are still enduring frigid temperatures without power, more than any other state. In Nashville and throughout the South, power lines and tree limbs are caked in heavy ice. The University of Mississippi has canceled classes for the week because of damage from the ice storm. We've met several people who have been trapped in their homes for days, unable to navigate the icy roads. How cold is it in your house right now? It's 45 degrees.

What are you guys doing to try to stay warm and safe at this point? Lots of blankets. We have a ceramic pot and a candle underneath it to try to stay warm. That's pretty much all we have, so.

About 6 inches of snow fell in parts of Tennessee, but it's the extreme cold that's causing real problems. Nashville's mayor is calling for patience as crews work to get the power back on.

We are seeing trees continue to fall. Even as crews are getting power restored, limbs and trees are falling on lines again in places, knocking power back out after it's been restored. Tonight, we'll have a wind chill of negative 11 degrees. This Arctic cold is also causing problems at many airports. Kris Van Cleave is at Reagan National. Still, plenty of cancellations and most flights are delayed, but planes are moving again. This storm has canceled more than 21,000 flights since Friday, and now investigators are trying to determine if the weather factored into a deadly crash in Maine.

We have a passenger aircraft upside down.

Haunting radio transmissions during the height of the storm Sunday night. A business jet linked to a Houston law firm crashed during takeoff from Bangor, Maine. Local police say all six on board died. The plane came to rest upside down and can be seen smoking after the crash. The NTSB has notified us that they expect to have a team of investigators on site later this afternoon or early evening.

Airports from Dallas to Boston have been working around-the-clock, clearing out snow and ice to try to get people and planes moving again. At Washington's Reagan National Sunday, every flight was canceled. Solia Mechling has been in the terminal since Saturday.

We're just hoping to see if we could rebook as fast as possible because we are calling airlines and no one was picking up.

But now, you're stuck here. Yeah. Now, we're stuck here for two days, so. Sad to report, she's still stuck in the terminal, hoping to get on a long-delayed flight late tonight. Transportation Secretary Sean Duffy says the FAA doesn't expect things to get back to more or less normal until maybe be Wednesday. Tony.

A long time. Kris, thank you very much. CBS News meteorologist Rob Marciano has been tracking the storm from the start, and he joins us now with what's ahead. All right, Rob, what are you looking at? Well, Tony, we're looking at more in the way of cold. This wasn't such a strong storm, but it was a big one with deep moisture in that cold air. And it's still, as you saw, snowing in parts of Boston. The storm itself is off the coast, but the wraparound moisture continues to dump that snow. And some of these snow totals are pretty remarkable. We'll start you off with the top five. The big cities across the Northeast from Boston to DC, first time in 10 years they've all seen over 6 inches of snow. And Boston, the clear winner likely to see 20 by the time this is done. Look at Napanoch, there in the Catskills, 30. Dayton, that's a 24-hour record. Indy, Oklahoma City, that's the most you've seen in 10 years. All right, now we're into the cold. Nicole mentioned this, and it's all the way down to the Deep South. This is dangerous stuff. We've got Cold Weather advisories down to the Gulf Coast, 20 to 32 degrees there and well below 0 elsewhere. And more rounds of cold air are coming down here, and wind chills will be dangerous over the weekend. And, Tony, that sets the stage for potentially another snow event here on the East Coast this weekend. We'll talk more about that in the coming days. Tony.

All right. Rob, thank you.