The US East Coast is being battered by the first major blizzard to hit the region in four years.
Five states declared an emergency hours before heavy snow and hurricane-force winds blasted the area.
Experts warn of "historic" snowfall in some places, and flood warnings have been issued near the coast. More than 5000 US flights have been cancelled.
As the storm arrived, more than 116,000 households across Massachusetts were without power.
Forecasters said there was a chance the storm, known as a Nor'easter, will blanket the Boston area with up to 61cm of snow, and up to 30cm of snow has already fallen in parts of New York.
The current record of 70cm within 24 hours was set in 2003.
Gusts as strong as 96-120kmh have been forecast along the coastline.
Experts say the storm will undergo bombogenesis, meaning that colder air is expected to mix with warmer sea air, leading to a swift drop in atmospheric pressure. The process leads to a so-called bomb cyclone.
"Travel should be restricted to emergencies only," warned the National Weather Service (NWS) in Boston.
"If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle."
The powerful storm began to hit the country's coast in the early hours of Saturday morning, with inches of snowfall already blanketing a number of states.
Bryce Williams, a meteorologist based in the state, told the New York Times the heaviest would hit there by Saturday evening before conditions clear up across the weekend.
"If you don't have to be out and about, we're trying to say: Stay home until Sunday," he told the newspaper.
Winds are expected to strengthen, possibly reaching hurricane-level speeds, according to the NWS and Accuweather. A blizzard warning has been issued throughout the north-east, the first time such an alert has been issued since 2018.
The governors of New York, New Jersey, Maryland, Rhode Island and Virginia declared states of emergency, telling residents to stay off the roads for their own safety.
There are 75 million people are in the path of the storm, according to CBS News.
New York mayor Eric Adams cancelled outdoor dining for Saturday, as well as vaccine appointments, but struck an optimistic tone when telling reporters that the city was handling the storm like "a well-oiled machine".
New York governor Kathy Hochul has said that the storm "could be life-threatening" and suggested that residents stay home "with a six pack of beer and wait it out".
Photo AFP