Roughly 185 million people are under winter alerts today as dangerous cold grips much of the central and eastern U.S. Wind chills in some areas are as low as the minus 20s and minus 30s, and temperatures are 10 to 40 degrees below average.

While a massive winter storm plunges much of the country into a deep freeze of ice and snow, the same system threatens nearly 10 million people across parts of the Deep South and Gulf Coast with a new hazard — severe thunderstorms.

This historic storm will spread destructive ice and heavy snow over 34 states through Monday in the South, Midwest and Northeast, including a potential nor’easter. Here is the very latest forecast.

The pileup in Michigan is the latest impact of the major winter storm moving across the U.S. More than 200 million people are in the path of the arctic blasts.

NEW YORK (WABC) -- A Winter Storm Warning has been issued for New York City and the Tri-State as a powerful winter storm gets set to spread snow, heavy at times, and dangerous ice in our area for much of Sunday and lingering into early Monday.

This historic storm is already hitting the South, and will spread destructive ice and heavy snow over 34 states through Monday including the Midwest and Northeast. Here is the very latest forecast.

While a massive winter storm plunges much of the country into a deep freeze of ice and snow, the same system threatens the Deep South with a new hazard — severe thunderstorms. A line of thunderstorms is expected to organize Sunday morning across Louisiana and Mississippi,

Snow and ice began to accumulate Friday across the Rockies and Plains, and will sweep into the South, Midwest and Appalachians on Saturday.

Snow and dangerous ice spanned hundreds of miles from Texas to the Northeast. • Thunder ice: Power outages increased from ice across the South. Thunder and lightning were observed in areas of heavy freezing rain and sleet as the storm intensified overnight.