As a coast-to-coast winter storm slices across the U.S. Sunday and Monday, severe thunderstorms are expected to fire up across portions of the South on the warm side of the storm system.

Severe weather alerts affected the Midwest and extended to the East Coast, with heavy snowfall, ice storms, and strong winds disrupting transportation. American Airlines issued a travel advisory, and governors declared emergency statuses as residents faced hazardous conditions,

A major, disruptive winter storm is sweeping across the central US, bringing with it a dreaded combination of snow, ice and plunging temperatures.The