Arctic blast slams South with snow and ice, over 1,700 flights canceled across US

A major winter storm is unleashing heavy snow and ice across the southern United States on Monday before taking aim at northeastern cities.

Over 1,700 flights have been canceled Monday, with airports in Denver, Dallas, Houston and Chicago hit the hardest, as a major winter storm unleashes heavy snow and ice across the South.

Oklahoma, Arkansas, Tennessee and Alabama have already gotten 4 to 6 inches of snowfall, and more is on the way.

Major cities in the snowstorm's path for Monday include San Antonio; Little Rock, Arkansas; Memphis, Tennessee; and Nashville, Tennessee.

Near Houston, an 18-wheeler overturned due to ice on a freeway, shutting down traffic in both directions, according to ABC Houston station KTRK.