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Tornado Facts: Causes, Formation & Seeking Shelter - Live Science

www.livescience.com/21498-tornado-facts.html

Apr 19, 2016 ... Tornadoes are violent storms that kill 80 people each year. Here are some facts about how they form and how to stay safe.

Severe Weather 101: Tornado Basics

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

Basic information about tornadoes, from the NOAA National Severe Storms ... The rear flank downdraft is the motion in the storm that causes the hook echo ...

The Science of Tornadoes | Weather Underground

www.wunderground.com/resources/severe/tornadoFAQ.asp

A tornado is a violently rotating column of air which descends from a ... At the time of this radar scan, a tornado was on the ground. ... What causes tornadoes?

www.ask.com/youtube?q=What Causes a Tornado?&v=ep2YY_D7wdk
Dec 12, 2013 ... This is a Science Made Easy Video. A quick and fun cartoon lesson about tornadoes. Great for teachers and students- hope you guys enjoy!

How Do Tornadoes Form? - Dangerous Weather

eo.ucar.edu/kids/dangerwx/tornado3.htm

Tornadoes are associated with large (supercell) thunderstorms that often grow to over 40,000 feet. A column ... This causes a horizontal rotating column of air. 2.

What Causes Tornadoes? - American Museum of Natural History

www.amnh.org/education/resources/rfl/web/bulletins/earth/C/4/1/

Tornadoes originate in thunderstorms. The May tornadoes emerged from a network of hundreds of thunderstorms over Oklahoma and southern Kansas.

What causes tornadoes? | MNN - Mother Nature Network

www.mnn.com/earth-matters/translating-uncle-sam/stories/what-causes-tornadoes

Apr 8, 2014 ... The U.S. has more tornadoes than anywhere else on Earth, but their sudden twists and turns still make them mysterious and mesmerizing.

Oklahoma tornado: What causes storms in 'Tornado Alley'? - BBC ...

www.bbc.com/news/world-us-canada-22612496

May 21, 2013 ... Oklahoma is particularly vulnerable to tornadoes, lying inside the so-called ' Tornado Alley', stretching from South Dakota to Central Texas.

WHAT CAUSES TORNADOES AND HURRICANES?

www.theweatherprediction.com/basic_weather_questions/tornadoes_hurricanes.html

A tornado is rapidly spinning air that develops from a thunderstorms and is ... This rising air is what causes all the rain and hail to form from the water in the air.

Tornadoes - USATODAY.com

usatoday30.usatoday.com/weather/wtwist2.htm

A basic guide to what causes tornadoes. By Jack Williams, USATODAY.com. The National Weather Service defines a tornado as "a violently rotating column of ...

Answer
Clouds form when water vapor condenses in the air. This releases heat, which increases the updraft temperature and the kinetic energy of air movement. In supercell thunderstorms, updrafts are strong and may create a vortex of air that may form a tornado.
Most scientists consider this to be a simplified and incomplete explanation. The finer details of tornado formation and dissipation are still unknown.
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Tornadoes - Weather Wiz Kids weather information for kids

www.weatherwizkids.com

A tornado is a violent rotating column of air extending from a thunderstorm to the ... Waterspouts can sometimes move inland, becoming tornadoes causing ...

What causes tornadoes?

www.weatherquestions.com

May 30, 2013 ... A description of the special conditions that can cause a thunderstorm to become tornadic.

Types and Causes of Tornadoes - Conserve Energy Future

www.conserve-energy-future.com

Types and Causes of Tornadoes: A tornado is a strong, turbulent column of air, moving fast and keeping in contact with the earth's surface and a vertically ...