A dynamic storm that prompted foreboding predictions of dangerous weekend weather spawned tornadoes, dust storms and wildfires that killed at least 39 people and destroyed hundreds of homes and businesses.

Violent tornadoes ripped through parts of the U.S., wiping out schools and toppling semitractor-trailers, part of a monster storm that has killed at least 40 people across six states.

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,