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.

Punxsutawney Phil made his annual prediction in Pennsylvania, and the groundhog saw a shadow, meaning the United States is set for six more weeks of winter.

Places to the south of the Great Lakes will see the highest risk of disruptive ice from late on Wednesday into Thursday On the northern side of the storm, the precipitation will mainly be falling as snow but the most dangerous conditions are expected through portions of western Maryland,