At least two tornadoes in Arkansas have a preliminary rating of EF-4 as part of the tornado outbreak that has claimed dozens of lives.

Millions of Americans across the country are on alert for a severe weather outbreak as violent, long-track tornadoes with damaging winds of up to 80 mph and large hail are expected across the Midwest and South with the cross-country storm moving east.

A deadly tornado outbreak ripped through the Midwest and South over the weekend, leaving destruction, power outages and tragic loss in its wake.

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,

Violent storms and tornadoes have been ravaging the U.S. for several days. At least 34 people have died, and dozens more have been injured. In Alabama, a tornado swept up a school bus, which crashed into a high school building,

A powerful storm system that has been sweeping across the central and eastern U.S. has produced violent tornadoes, a dust storm, raging wildfires and even blizzard conditions, tragically leaving at least 36 people dead in its path.