Post-Thanksgiving travel will be treacherous in parts of the Great Lakes region on Sunday due to heavy lake-effect snow, while biting cold temperatures sweep across a large swath of the United States.

Lake-effect snow blowing in from the Great Lakes has blanketed parts of Michigan, Ohio, Pennsylvania and New York, stranding hundreds of vehicles on roads and snarling post-Thanksgiving travel plans for millions.

Cities near the Great Lakes have seen up to three feet of lake effect snow over the weekend. See how long it will stay in the forecast.

Cities across northern parts of lower Michigan and eastern Upper Michigan, will see lake effect snow through Monday night that will create "hazardous travel conditions", the NWS said. Some cities in the lower Michigan peninsula have already received 2 to 3 feet of snow, according to Oravec.

Here's your full Power of 5 Weather Forecast for Cleveland, Akron, Mansfield, Sandusky, Ashtabula, and Northeast Ohio.

Post-Thanksgiving travel plans were thrown into trouble as almost 30 inches of snow fell along Lake Erie, closing a stretch of I-90 and stranding motorists.

More than 4 million people across five states were under winter storm alerts on Sunday as heavy lake-effect snow continued to bury the Great Lakes region, prompting emergency declarations and the deployment of National Guard troops to rescue stranded motorists.

Northern states have woken up from the holidays to a blanket of snow that has been as deep as 6 feet in some areas.