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A tornado is a violently rotating column of air extending from a thunderstorm to the ground. Tornadoes in the US occur most frequently in spring and summer.
The strongest tornadoes have rotating winds of more than 250 mph. Damage can include roof removal or complete destruction of buildings, uprooted trees, and can be life-threatening as a result.

Tornado - Wikipedia

en.wikipedia.org/wiki/Tornado

A tornado is a violently rotating column of air that spins while in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of ...

Tornadoes | Ready.gov

www.ready.gov/tornadoes

Tornadoes are nature's most violent storms. Spawned from powerful thunderstorms, tornadoes can cause fatalities and devastate a neighborhood in seconds.

Severe Weather 101: Tornado Basics

www.nssl.noaa.gov/education/svrwx101/tornadoes/

Basic information about tornadoes, from the NOAA National Severe Storms Laboratory.

Tornadoes - Weather Wiz Kids weather information for kids

www.weatherwizkids.com/weather-tornado.htm

Tornadoes What is a tornado? A tornado is a violent rotating column of air extending from a thunderstorm to the ground. The most violent tornadoes are capable ...

The Online Tornado FAQ (by Roger Edwards, SPC)

www.spc.noaa.gov/faq/tornado/

Mar 29, 2016 ... Roger Edwards of the Storm Prediction Center presents basic Frequently Asked Questions and the answers about tornadoes.

www.ask.com/youtube?q=Tornadoes&v=x8eWEHuCtUk
Mar 1, 2016 ... Biggest tornado in the world largest tornadoes monster tornado worst tornado caught on tape tornado This article lists various tornado records.

Tornadoes 101 - National Geographic

video.nationalgeographic.com/video/101-videos/tornadoes-101

Tornadoes, nearly three-quarters of which occur within the U.S., are unpredictable and can cause massive damage. New tools and data are helping scientists ...

Tornadoes strike again. How do they work? | The Why Files

whyfiles.org/2014/tornadoes-strike-again-how-do-they-work/

May 8, 2014 ... How do tornadoes derive so much power from the air? What good are tornado watches? Will predictions improve? Can you build a safe room ...

Tornado Central - weather.com

weather.com/storms/tornado

Get the latest news and updates on tornadoes in your area on weather.com.