By Friday morning, the number of flight cancellations dropped to about 1,110 nationwide. Many schools remained closed in Connecticut, Maine, Massachusetts, New Hampshire, New York state, Pennsylvania, Vermont and Virginia, while some in Rhode Island were opening late.
The treacherous weather was blamed for nearly two dozen deaths, many of them in motor vehicle accidents.
In New York, 36-year-old Min Lin died after she was struck by a utility vehicle with a snowplow attached to it as it backed up outside a shopping center in Brooklyn. She was rushed by paramedics to a medical center, where her nearly full term, 6-pound, 6-ounce baby was delivered via cesarean section, hospital spokeswoman Eileen Tynion said.
The baby was in critical condition in the neonatal intensive care unit, she said.
No immediate charges were brought against the snowplow operator.
The snow, sleet and ice that bombarded the Southeast on Wednesday brought its ferocity into the Northeast a day later.
Washington, D.C., received 9 inches of snow Thursday, Westminster, Md., reported 19 inches, and Newark, Del., had 14 inches. New York City received nearly 10 inches, and parts of New Jersey had more than 11.
In New York, the teachers union and TV weatherman Al Roker harshly criticized Mayor Bill de Blasio's decision Thursday to keep schools open. Roker, who was in Russia for the Winter Olympics but has a daughter in New York's public schools, said on Twitter: "It's going to take some kid or kids getting hurt before this goofball policy gets changed."
He largely stood by his criticism on Friday but apologized on NBC's "Today" show for a tweet forecasting "one term" for de Blasio, saying that was "below the line."
The mayor said many parents depend on schools to watch over their children while they are at work and keeping the schools open was the right decision.