A "historic" winter storm has crossed the United States, paralyzing the country as it has rarely been.
Twenty deaths are to be deplored, while snowfall is still expected.
In some states, the National Guard has been deployed to help with relief operations.
A look back at these events in ten images.
1. The winter storm that crossed the United States was deemed "historic" by the United States Weather Service
Reuters/Sydney Gros-McDermid
2. The storm brought heavy snowfall, icy gusts, and temperatures down to -48°C in places
Reuters/Brendan McDermid
3. Temperatures are able to turn boiling water into droplets of ice in an instant
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4. In Chicago, it was around -20°C during the day on Friday
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5. 70% of Americans have been affected by alerts or calls for caution in the United States
Reuters/Brendan McDermid
6. About twenty people died, some of them in road accidents, on roads that had become very dangerous due to ice and lack of visibility
AFP/Getty Images/Matthew Hatcher 2022 Getty Images
7. 'The winds are so strong' the snow is forming like 'sand dunes', it's 'crazy', described Ali Lawson, 34, who has lived in Buffalo for eight years
Reuters/Lindsey DeDarioLindsay DeDario
8. Nearly 1,500 flights were canceled across the country on Sunday, and more than 3,400 the day before
AFP/Getty Images/Matthew Hatcher 2022 Getty Images
9. Several hundred thousand homes were also left without power across the country
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10. Across American cities, shelters have been opened to accommodate people in need to allow them to warm up and protect them from the risk of hypothermia
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