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.”

Snow will fall from Minnesota to Maine, with heavy amounts probably falling from Wisconsin to Massachusetts. Freezing rain and sleet will also be a big issue, especially south of Interstate 80 from Ohio through New Jersey.