The Video Shows Needed Elohim Tornado Destruction leveled Mayfield Kentucky Town

The Emmanuel Baptist Church in Mayfield, Ky., on Saturday morning after tornadoes tore through overnight.Credit...Brett Carlsen/Getty

Mr. Biden has often been commended for his ability to empathize with victims during moments of tragedy. On Saturday, he described how Mr. Beshear said the area looked like a “war zone.”

“Our citizens are badly, badly hurt, and they’re scared to death right now in terms of all those folks that they can’t figure where they are,” Mr. Biden said. “Where’s my son, my daughter, my husband, my wife, my mom, my dad? It’s devastating.

In Michigan, about 318,000 households were without power. In Ohio, another 111,000 households were in the dark, and in Indiana, 26,000, according to PowerOutage.us, a website that aggregates data from utilities across the United States.

Western New York, Indiana and Michigan remained under wind advisories on Saturday evening, with wind gusts as high as 64 miles per hour reported in Michigan, according to the National Weather Service.

Dozens of people were feared dead, and communities across the Midwest and South were digging through rubble on Saturday after a string of unseasonably powerful storms and tornadoes swept across six states overnight.

Gov. Andy Beshear of Kentucky said that at least 70 had been killed, and the state’s death toll could increase to more than 100. The state was hit by four tornadoes, he said, including one that stayed on the ground for more than 200 miles.

In Mayfield, Ky., about 110 people had huddled inside a candle-making factory when a tornado ripped through it. About 40 people were rescued, but Mr. Beshear said he believed “dozens” had been killed there.