Snowstorm blankets mid-Atlantic U.S., at least seven dead in Midwest

Snow in Columbia, Missouri, U.S. January 12, 2019, in this still image obtained from a social media video. Courtesy of Hillary Tan/Social Media via REUTERS.

(Reuters) - A massive winter storm rolled eastward to the mid-Atlantic United States on Sunday after dropping more than a foot of snow on parts of the Midwest and killing at least 7 people in highway accidents on Saturday.

The weather system, which started as rain from Mexico but has since turned into snow, is forecast to affect an 1,800-mile (2,900 km) swath of the United States from Colorado to the mid-Atlantic. Millions of Americans in ten states and Washington, D.C. were under a winter storm warning or advisory on Sunday.