Powerful storms knock out power to more than 700,000 across South and Ohio Valley

More than 700,000 people across the Southeast and Ohio Valley are in the dark Sunday night as powerful storms ripped through the US, unleashing strong winds, hail and tornado threats.

​More than 700,000 people across the Southeast and Ohio Valley are in the dark Sunday night as powerful storms ripped through the US, unleashing strong winds, hail and tornado threats.