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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.

en.wikipedia.org/wiki/Tornado

A tornado is a rapidly rotating column of air that is in contact with both the surface of the Earth ... This is a featured article. Click here for more information.

stormaware.mo.gov/tornado-facts-history

Learn basic tornado facts and review Missouri's tornado history. ... The strongest tornadoes have rotating winds of more than 250 mph. .... Watch the sky and stay tuned to NOAA Weather Radio, commercial radio, or television for information.

www.tornadofacts.net/general-tornado-facts.php

If you're looking for basic tornado facts and information then you've come to the right place. This section of our website contains general tornado facts that are ...

www.weatherwizkids.com/weather-tornado.htm

Weather Wiz Kids is a fun and safe website for kids about all the weather info ... A tornado is a violent rotating column of air extending from a thunderstorm to the ...

www.nationalgeographic.com/environment/natural-disasters/tornadoes

A rare mother ship cloud formation hovers over Childress, Texas. Tornado chasers there spent seven hours and 150 miles (240 kilometers) tracking the ...

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

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

www.spc.noaa.gov/faq/tornado

May 1, 2017 ... There are many good websites with tornado information, but also, many inaccurate and unreliable ones. As with any other subject, please ...

www.ready.gov/tornadoes

Some tornadoes are clearly visible, while rain or nearby low-hanging clouds ... Before a tornado hits, the wind may die down and the air may become very still. .... Freedom of Information Act · Office of the Inspector General · Whitehouse.gov ...

www.encyclopedia.com/earth-and-environment/atmosphere-and-weather/weather-and-climate-terms-and-concepts/tornado

Get information, facts, and pictures about tornado at Encyclopedia.com. Make research projects and school reports about tornado easy with credible articles from ...