At least 28 people have died in the US as the country grapples with a brutal winter storm.
The snowstorm left nearly 300,000 homes and businesses without power and temperatures plummeted below freezing.
More than 3,000 flights were canceled on Saturday, with some airports closed.
on Friday More than 200 million people are under some form of weather warning.
Live updates: Death toll rises as impact of storm spreads
Four people were killed when 46 cars collided on icy Ohio roads.Photo: Ohio Highway Patrol
90 mph wind and 20 cm of snow warning
The icy conditions on the roads prompted many authorities to warn against non-essential travel, and hundreds of people who ventured out found themselves trapped in their cars.
Three of those killed were killed in car crashes in Kentucky and three others in Oklahoma, two of whom were killed by wind-blown snowflakes.
In Montana, the National Weather Service warned that the eastern slopes of Glacier National Park and nearby foothills and plains could see up to 20.3 centimeters of snow and winds of up to 90 mph.
Montana recorded -45.6C (-50F) earlier in the storm, while yesterday’s low for the remote town of Havel – also in Montana – was -39C (38F).
In Maine, more than 107,000 homes were without power and utility bosses warned it could take days to fully restore power, while some other states asked customers to reduce power usage to avoid rolling blackouts.
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One company told its 65 million customers in 13 states that power plants were struggling to operate under the stress of weather and extreme demand.
Another utility asked customers to lower their thermostats from 15.6C to 16.7C after a plumbing fixture failure temporarily reduced gas supply to one of its suppliers by 30%.
Emergency shelters are being opened for those who are homeless or without power in their homes, while urgent efforts are underway to provide firewood to some Native American tribes living in remote areas.
In Portland, Oregon, severe weather shelters distributed tarps and tents to people, as the centers themselves were closed due to the severe weather.
More than 1,100 people have sought warmth at the city’s five emergency shelters, officials said.
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“One of the worst storms in history”
In Buffalo, N.Y., heavy snow, freezing temperatures and power outages prompted people to search for churches, police stations and other places that might have heat.
Erie County Executive Mark Poloncarz said an ambulance trip to the hospital took more than three hours at a time, with roads still blocked by snow, abandoned cars and downed power lines.
New York Governor Kathy Hochul said the storm was “one of the worst in history,” and Timothy Carney of the Erie County Sheriff’s Office said: Category hurricane. Good for 24 hours.”