Northeastern Kansas into north-central Missouri could see over 15 inches. "For some, this could be the heaviest snowfall in over a decade," the National Weather Service said. Start the day smarter. Get all the news you need in your inbox each morning.

A major winter storm sweeping much of the U.S. was producing heavy snow and ice as it threatened areas from the Central Plains through Mid-Atlantic — leaving tens of millions under weather alerts Sunday.