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.

"February is kicking off with a very stormy pattern," AccuWeather meteorologist Bernie Rayno said. "A parade of three winter storms will bring snow, ice and sleet to millions of people from the Midwest through the Northeast.”