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.

In Erie County, Ohio, a lake-effect snow warning is in place until 7 p.m. on Tuesday. Between 10 and 20 inches of heavy snow accumulations are expected in the north of the county, while between 12 and 24 inches are expected in the south.

Highmark Stadium, situated in Orchard Park, is under a Lake-Effect Snow Warning for Sunday night’s San Francisco 49ers vs. Buffalo Bills game. Lake-effect snow bands could produce multiple feet of

Lake effect snow is slamming the Great Lakes, with seven states from Wisconsin to New York under snow alerts on Monday.

A light dusting of snow began covering the Buffalo Bills' facility on Friday as the team completed its final practice of the week inside Highmark Stadium.

As biting cold temperatures sweep across a large swath of the US, parts of the Great Lakes face more than a foot of additional lake-effect snow through Tuesday – the latest complication for cities already blanketed by snowfall amid post-Thanksgiving travel.

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.