Communities across Missouri, Illinois, and Indiana were devastated by the deadliest and longest-running tornado ever recorded a century ago. Here's what happened.

Tornadoes whipped through Missouri on Friday night, ripping apart homes, businesses, and the electrical system. Gov. Mike Kehoe’s Office says at least 12 people have been killed and one person is still missing from the severe weather.

Terrifying tornadoes and severe storms have wreaked havoc across the southern U.S., leaving millions stranded and causing major travel disruptions. At least 40 people have died as tornadoes and extreme weather ravaged the US Midwest and South,