Violent tornadoes killed at least 20 people and decimated homes in the Mississippi Valley and Deep South on Saturday. The death toll is expected to rise.
Hundreds of thousands of people were without power across the region, and 10 million are under a “tornado watch” from Tennessee to Louisiana. Photos of the tornado damage can be seen here.
The federal Storm Prediction Center issued the rare “high risk” designation on Saturday, an indication that “numerous intense and long-tracked tornadoes” were expected.