Severe storms and tornadoes threaten multiple regions in the US.

More than half a million customers were without power in the US after a weekend of deadly tornadoes and severe thunderstorms in the Midwest. The severe weather outbreak spawned at least 20 reported tornadoes across three Midwestern states, killing at least one person and damaging or destroying dozens of homes. The massive weather system is forecast to move toward the East Coast on Monday, with severe storms expected to hit from New York and Connecticut all the way down to South Carolina, potentially impacting more than 86 million Americans.