A destructive derecho snapped trees and knocked out power to tens of thousands of people as it tore across portions of the ...

Derechos are long-lived storms that cause extreme wind damage, sometimes lasting eight hours and traveling hundreds of miles.

A dramatic video recorded in South Dakota on Sunday shows a massive tornado spinning across the landscape during severe ...

We still don't know why tornados happen, but we're getting closer to finding answers — just as the Trump administration threatens to cut $1 billion in funding ...

It's always hot in the summer in the U.S. Southeast, but even by the standards of Florida and the Carolinas, the steamy heat ...

The Tri-State Tornado, which is still to this day the deadliest tornado in U.S. history, killed 695 people and injured 2,027 ...

The OTUS group flies special drones into tornadoes to measure meteorological data and better understand how twisters behave.