Snow, high winds and a glacial chill hit the northeastern United States on Friday as a blast of brutal wintry weather bore down on many states and major cities, snarling air traffic.
Temperatures in New York were expected to drop to 9 degrees Fahrenheit, according to forecasts.
Tracking system FlightAware said that some 2,200 flights within, into or out of the United States had been canceled so far.
The National Weather Service issued winter storm warnings and advisories for a huge area spanning states from Chicago trough New York, New England and even the US capital, Washington.
Severe weather was also hitting the country's Midwest, dropping a blanket of snow and cancelling flights at Chicago's bustling O'Hare International Airport.
The northeastern winter warning was in effect in New York from Thursday evening through midday Friday, with forecasters predicting four to eight inches (10 to 20 centimeters) of snow and winds that could reach up to 35 miles per hour.
The storm is predicted to dump 6- to 12-inches of snowfall over a large area beginning in northern Pennsylvania and upstate New York to a large part of New Jersey and New England.
This includes the entire metropolitan area of New York City and Long Island, northward to Albany, New York, and Scranton, Pa, according to accuweather.com
Between 12 and 18 inches of snow will fall in localized areas of Massachusetts, Rhode Island and Connecticut and the cities of Providence, Rhode Island, as well as Boston.
After the precipitation stops Friday evening, people should brace for temperatures 20 to 30 degrees below normal.
And sub freezing low temperatures are expected as far south as the Florida panhandle, the National Weather Service said.
New York City residents were urged to stay off the streets so the Sanitation Department could work.