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.

Freezing rain could lead to hazardous travel conditions across the entire Chicago area, especially during "peak timing" of the winter weather system.

The National Weather Service has issued a Winter Weather Advisory for all of northern Ohio starting Wednesday night through Thursday morning. Freezing rain is expected across the region with some accumulation of ice expected overnight until temperatures rise above freezing on Thursday morning.