Atmospheric Phenomena

Thunder and Thunderstorms

What are the requirements for a storm to be considered a severe thunderstorm?

In order for it to be categorized as “severe” a thunderstorm must have winds exceeding 58 miles (93 kilometers) per hour and/or have tornadoes or large hail, or be likely to generate tornadoes or large hail. The National Weather Service issues thunderstorm warnings based on the potential for storms to become severe.


This is a web preview of the "The Handy Weather Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App