Winter weather alerts were in place for some 100 million people across 22 states from Nebraska to Massachusetts Thursday as a series of winter storms descend on northern and eastern states, bringing snow,

A winter storm that brought snow, sleet and freezing rain to a large swath of the Midwest swept into the mid-Atlantic and Northeast on Thursday, causing treacherous travel conditions, prompting school delays and closures and potential power outages for millions of Americans.

Winter weather advisories for all 21 counties are in effect with ice and up to 3 inches of snow possible in spots.