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

At least 41 people are dead after a weekend of dynamic storms unleashed tornadoes, blinding dust and wildfires — leaving behind uprooted trees and flattening hundreds of homes and businesses across seven states in the U.

A severe storm on Monday swept through the U.S. Southeast and Mid-Atlantic, bringing thunderstorms, hail, damaging winds and the potential for tornadoes. Days earlier, the same ferocious weather system spawned violent twisters,

The National Weather Service has confirmed at least four EF1 tornadoes touched down across Westmoreland and Indiana counties on Sunday as severe weather rolled through the area. National Weather Service storm surveyors first found damage consistent with an EF1 tornado near Donegal,

At least three tornadoes touched down in western Pennsylvania on Sunday as severe storms swept across the region, according to the National Weather Service in Pittsburgh.