Thunder is one of nature’s most dramatic sounds, accompanying brilliant flashes of lightning during a storm. But what causes this rumbling roar in the sky? To understand thunder, we must first explore ...

Discover how thunderstorms form, the dangers they pose, and essential safety tips to stay protected during severe weather. Learn to stay safe and informed.

Thunder is the acoustic shock wave from the extreme heat of a lightning flash. The latest edition of Science Behind the Forecast explains how thunder is created. This interview has been edited for ...

A Amanda Gumber, research assistant, Space Science and Engineering Center at the University of Wisconsin-Madison: Thunder is formed by the intense heating produced by lightning. The thunder you hear ...