A massive winter storm continued its assault on the U.S. Sunday, blanketing the South and advancing into New England with snow, sleet, and freezing rain. The National Weather Service predicts that this storm pattern will persist into Monday, leaving behind frigid temperatures and widespread power outages. The storm is causing hazardous travel conditions across the affected regions. More than 100,000 customers lost power in Tennessee, Texas, Mississippi, and Louisiana according to power outage trackers. As flight schedules falter, roughly 10,000 flights have already been canceled, with many more delayed. In response, President Donald Trump has approved emergency declarations for a dozen states, ensuring federal support is on the way.