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Tornadoes | Severe Storms

Learn the basics of tornado formation in this interactive tutorial. Photos, information, and lessons will guide you through the process of thunderstorm development to tornado formation and dissipation.
  1. Famous Tornadoes (8)
  2. Storm Chasing (2)
  3. Tornado FAQs (7)
  4. Tornado Safety (4)

Storm Stats: Tornadoes
An at-a-glance guide to tornadoes. Learn how to recognize the signs, interpret watches/warnings, and swiftly seek shelter wherever you may be.

Top 10 Deadliest Tornadoes
A list of the top 10 deadliest tornadoes in the United States.

Tornadoes - How Tornadoes Form
Tornadoes and the formation of tornadoes are a popular severe weather topic. Learn what causes a tornado or twister, and the role of severe thunderstorms in their formation. Also introduced are tornado myths, how tornadoes are studied, and where the most severe storms are located.

Tornado Images
Tornadoes are one of the most destructive forces in nature. These images are live images taken at the scene of a tornado in Oklahoma.

The Fujita Scale
The Fujita scale was developed by Dr. Theodore "Ted" Fujita in the 1970s. The tornado damage scale assigns a rating of F0 to F5 for tornado speed and damage strength. The scale was later updated and is now known as the Enhanced Fujita Scale.

8 Severe Weather Look-Alikes
These weather phenomena look so similar that people often confuse one for the other. Are you among those fooled?

The First Book on the Study of Tornadoes - 1887
The first tornado book ever to be devoted solely to the study of tornadoes was published in 1887 by John P. Finley.

An Introduction to Tornadoes
Tornadoes have occurred in all 50 states. You may not be safe. Know the danger signs of tornado formation and where tornadoes are most likely to occur. Learning the violenbt nature of tornadoes are critical to preventing damages to your life and home.

Thunderstorms, Tornadoes, and Hurricanes: How do They Compare?
How do thunderstorms, tornadoes, and hurricanes differ? See how in this side-by-side storm comparison.

Free Tornado Videos - See the Power of a Twister!
Catch these high speed storm chaser videos as you get up close and personal with one of the worst natural disasters in weather. It’s the tornado. Witness the awesome power of high winds and damaging debris flying and swirling from close range in this list of the top 10 best tornado videos ever!

Storm Damage Surveys
A meteorologist's job doesn't necessarily end when severe weather watches and warnings are issued. After storms occur, there is still much work to be done, including an "on location" review of the event and the damages caused.

Fact Sheet on Tornadoes
This Canadian fact sheet on tornadoes is informative and easy to follow. It includes important safety procedures to follow in the event of a warning.

Advanced Tornado Powerpoint® Presentations
Using PowerPoint® in the classroom or for general knowledge can be an easy way to increase understanding of tornado science. Tornadoes are destructive storms best understood through interactive pictures and explanations. The visual presentations presented here offer complete understanding of tornadoes and their nature.

What is a derecho?
Derecho FAQs including types, associated severe weather, and U.S. occurrences.

Severe Weather (From the Safety of Your Computer)
Severe storm types are detailed.

United States Tornado History
Find information, dates, and explanations for famous tornadoes in the US.

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