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.

At least 36 people have reportedly been killed due to storms since tornado warnings were issued on March 14 A violent and severe storm outbreak in the United States has now killed at least 36 people in the South and Midwest,

Nine of the 12 fatalities reported during last week's severe weather outbreak occurred in Wayne and Ozark counties.

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,

Tornadoes in the South and Midwest overnight and early Saturday left 11 dead in Missouri. More tornadoes are forecast Saturday and Sunday.