"Preparing for Severe Winter Weather Across the U.S."

The U.S. is bracing for a major winter storm bringing record-low temperatures and "life-threatening" cold, with weather advisories, watches, or warnings in every state. Heavy snow, blizzard conditions, coastal flooding, and severe thunderstorms are expected, prompting warnings from the National Weather Service to take the extreme cold seriously. The storm has already caused flight cancellations, fatalities, and may impact voter turnout in Iowa. Safety tips and emergency plans are being emphasized, with cities preparing for the increased risk of frostbite and hypothermia, while NFL playoff games are also set to be affected by the extreme weather.