New York City Mayor Bill de Blasio also warned of an acute blast of cold air and snow earlier Wednesday. He advised people to stay indoors as much as possible.

The city has issued a "Code Blue" alert, which means outreach teams will act more frequently to encourage homeless people to go to shelters.

Major airports in the city were paralyzed due to the snow. According to the Federal Aviation Administration, flights at the J.F. Kennedy International Airport were delayed nearly two and a half hours while flights in LaGuardia Airport were delayed about 90 minutes.

Temperatures are expected to pick up during the weekend to as high as in the 40s Fahrenheit, according to weather forecast AccuWeather.

The cold weather in New York City with temperature expected to fall to a few degrees Fahrenheit above zero is very rare, said Ralley Horton, associate research professor with Columbia University's Lamont-Doherty Earth Observatory at a briefing on tipping points and surprises of climate change on later Tuesday.

Horton warned that a small shift of conditions including changes in sea level really matters a lot for the frequency, intensity and duration of extreme weather.

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