Three people were killed as powerful storms swept across the US Midwest, triggering flooding and tornadoes and knocking out electricity for nearly 800,000 customers across four states. Winds reached up to 99mph in parts of Indiana, tearing down trees, power lines and buildings.

Nearly 1 million customers in the Midwest were without power as perilous thunderstorms and extreme wind gusts pummeled the region on Tuesday.

More than 1 million customers were without power in four states as storms with winds gusting more than 80 mph tore down trees and power lines.