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

Millions of people from the Midwest to the Northeast are on alert as a developing winter storm is expected to bring a potentially crippling ice threat that could knock out power and lead to treacherous travel conditions across the region.

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.

A winter storm will bring the Lehigh Valley sleet, snow and freezing rain Wednesday night into Thursday, prompting a winter weather advisory.

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