The Christmas weekend is turned upside down for millions of Americans as they face a severe winter storm, accompanied by extreme temperatures, which has rendered many roads impassable, prompted the cancellation of thousands of flights and caused the deaths of at least 17 people. 

About 530,000 homes were still without power on Saturday around 10:00 p.m. GMT (against up to 1.5 million the day before), according to the Poweroutage.us site, particularly in North Carolina and Maine, where temperatures were largely negative.

The U.S. National Weather Service (NWS) warned that the cold posed a deadly risk and urged Americans in affected areas to stay indoors. Friday, because of the wind. Since Wednesday evening, the center and the east of the United States have been hit by the storm of rare intensity, whose polar winds have also caused heavy snowfall, particularly in the Great Lakes region.