Massive winter storm blasts Midwest, South, Northeast with snow, dangerous ice

A massive winter storm is pushing east.

A massive winter storm is pushing east, blasting the Midwest, the South and Northeast with snow and ice.

More than 4,000 flights have been canceled -- the biggest flight cancellation day of the year.

The storm has already dumped over 1 foot of snow in parts of Illinois, Indiana and Michigan.

On Thursday afternoon, the snow was falling heavily from St. Louis to Indianapolis to Cleveland and into western New York.