Washington — Dangerous wintry conditions descended Sunday on a large swath of the central United States as a severe storm system tracked eastward, prompting travel and work disruptions from Kansas City to Washington. Around a dozen states from Kansas to New Jersey were under winter storm warnings Sunday afternoon, according to the National Weather Service (NWS), while areas across the U.S. South faced possible tornado and cold weather threats. Nationwide, over 60 million people were under some sort of weather alert, according to broadcaster CNN, while air traffic monitoring site FlightAware showed almost 2,200 flight cancellations and over 25,000 delays.
