Most of the U.S. mainland is facing a deep freeze for New Year's Eve as arctic air brings record-low temperatures nearly everywhere but the Southwest. At least two people have died from causes related to the cold snap, and sharks killed by cold shock have begun washing up in New England. The national average Monday morning is expected to be just 10 degrees.
Many New Year's Eve celebrations have been canceled in favor of warnings about frostbite and hypothermia, but about 1 million people are still expected to spend hours outside for New York City's New Year bash, despite a forecast of 11 degrees with a wind chill of zero. Only one Times Square New Year's Eve celebration — the transition from 1917 to 1918 — has ever been colder.