Winter storm updates: Dozens dead across US in wake of massive snowfall, deep freeze

More than 5,100 flights have already been canceled within, into or out of the U.S on Monday, with flights leaving Dallas, Boston and New York City hit the hardest, according to FlightAware.

Since Friday, more than 20,000 flights have been canceled due to the storm. Over 11,000 flights were canceled on Sunday, marking the highest day for cancellations since the pandemic, according to Cirium data.

While the number of cancellations is significantly lower compared to Sunday, it still remains high as airlines are working to recover and resume normal operations.

Flights resumed Monday at Ronald Reagan Washington National Airport after the airport stopped all flights Sunday due to the storm.

-ABC News' Ayesha Ali

Olympian Shaun White went snowboarding in New York City’s Central Park, where 11 inches of snow was on the ground.

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Snowboarding in Central ParkAs the winter storm comes to a wrap, some Americans are taking advantage by enjoying a snow day in Central Park in New York City.

ABCNews.com

More than 11 inches of snow fell in Central Park in New York City, marking the city’s biggest snowfall since 2022. Philadelphia recorded over 9 inches, its biggest snowfall in a decade, while Boston recorded more than 16 inches.

The Northeast states saw massive snow totals: 17 inches in Connecticut and New Jersey, 16 inches in Rhode Island, 11 in Maryland, 20 inches in Massachusetts and 23 inches in Pennsylvania.

In the Midwest, snow totals hit 14 inches in Indiana and Illinois.

Even the South saw major snow, with 11 inches recorded in the Little Rock, Arkansas, area and 5 inches in Tennessee.

Dangerous freezing rain is also making streets extremely slick in the South. An inch of freezing rain was recorded in Greenville, South Carolina, and Cherokee, Alabama, while Nashville, Tennessee, has half an inch of freezing rain.

This weekend’s massive winter storm brought 10 to 20 inches of snow to the Plains and the Northeast and dangerous sleet and freezing rain to the South, crippling travel.

As the snow ends Monday morning, nearly 270 million people across the central and eastern U.S. are under alert for dangerously cold temperatures.

In the South, the wind chill -- what temperature it feels like -- dropped Monday morning to minus 3 degrees in Dallas, 7 degrees in Austin, zero degrees in Little Rock, Arkansas, and 2 degrees in Nashville, Tennessee. Dallas, New Orleans and Austin may hit record low temperatures on Monday, and that brutal cold will continue into Tuesday.

In the Midwest, the Monday morning wind chill is hitting a dangerous minus 27 degrees in Minneapolis and minus 14 in Chicago.

And for the Northeast, the wind chills will see a major drop on Tuesday morning to minus 4 in Washington, D.C., minus 3 in Boston and minus 18 in Pittsburgh, Pennsylvania.

-ABC News' Daniel Manzo