A round of frigid temperatures is sweeping across much of the United States this week, bringing dangerously cold conditions to millions and setting the stage for widespread disruptions.

Harsh weather moved west as a polar vortex was expected to grip the Rockies and the northern Plains after winter storms pummeled the eastern U.S. over the weekend, killing at least 10 people, includin

Extreme cold warnings were issued for an 11-state swath of the U.S. stretching from the Canadian border to Oklahoma and central Texas, where the Arctic front was expected to bring near-record cold temperatures and wind chills in the single digits by midweek.

Storms have overwhelmed the state in recent years. On top of the floods, snow is expected soon. Sheets of rain drenched Kentucky in recent days, causing floods that turned roads and neighborhoods into rivers in a part of the country that has been pummeled by severe weather in recent years.

Rives, a city in Obion County, is undergoing mandatory evacuations due to a levee break from flooding this weekend.

Rescue efforts are ongoing for the second day Tuesday as water levels continued to rise on some waterways in Kentucky and other portions of the Ohio Valley and mid-Atlantic flooded by a deadly coast-to-coast winter storm.

A mother and her 7-year-old child were killed in Kentucky when the car they were in was swept away by floodwaters in Hart County near Interstate 65.