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.

"The scale of devastation across our state is staggering," Missouri Gov. Mike Kehoe said. "While we grieve the lives of those lost, we are also focused on action."

Austin Police said at least five people died and 11 were hurt in a crash involving at least 17 vehicles, including semi-trucks, on Interstate 35 in north Austin late Thursday night. "We look forward to continued engagement ... to support public health, build consumer trust and promote consumer choice."