A tornado was spotted near Harrisburg, Arkansas, on Sunday amid severe weather conditions across the state. Videos of the twister have surfaced on social media. According to the radar, the tornado is moving towards,

WATCH: Tornado footage from Harrisburg, Arkansas

Nearly 2.5 million people were placed in a "high-risk" zone, which included parts of west Tennessee, northeast Arkansas, southeast Missouri, and regions of western Kentucky and southern Illinois.

Tornadoes and thunderstorms are sweeping across areas of the South and Midwest of the United States, leaving a trail of destruction and tens of thousands of homes without power. Flash flooding is expected to follow the violent storms as the National Weather Service warns of a threat to life.

A line of storms have moved into Arkansas, with the state already seeing multiple tornado and severe thunderstorm warnings on Wednesday. Here's the latest.

Several tornadoes are believed to have touched down in the Mid-South Wednesday night into early Thursday morning.

Tornado sirens sounded in Louisville, Kentucky amid a severe thunderstorm warning. Power outages were reported.

Violent storms cut through a wide swath of the South and Midwest, spawning tornadoes and killing at least one person, knocking down power lines and trees and ripping roofs off homes. Video above: Tornado touches down near Bay,