Mississippi leaders said agencies and volunteers are working to help communities across the state recover from a deadly tornado outbreak that occurred March 14-15. On Saturday, Gov. Tate Reeves (R-Miss.

Jeff Smitherman, the director of an Alabama emergency management agency, joins ABC News live to discuss the high-risk alert for potential tornado outbreaks in Alabama and Mississippi.

In some extreme cases, thunderstorms can spawn a derecho, a long-lived windstorm with gusts over 100 mph, strong enough to cause widespread destruction. If a severe thunderstorm warning mentions damaging winds or a derecho, take cover immediately—just as you would for a tornado.

The dynamic storm from Friday through Sunday had earned an unusual “high risk” designation from weather forecasters.

Violent tornadoes and high winds decimated homes, wiped out schools and toppled semitractor-trailers as a monster storm that also produced dust storms and icy conditions killed at least 33 people across the central and southern U.