Violent tornadoes ripped through parts of the U.S., wiping out schools and toppling semitractor-trailers in several states.

At least 37 people were killed as a sprawling storm barreled across the nation’s midsection toward the East Coast.

A powerful storm system that tore across the United States in recent days is winding down Monday, but in its wake are devastated communities across states hit with violent tornadoes, wildfires and dust storms spun off by the massive system.