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A tornado is a violently rotating column of air that is in contact with both the surface of the earth ... The Fujita scale rates tornadoes by damage caused and has been replaced in some countries by...

How Tornadoes are Formed - Universe Today


Jan 25, 2010 ... Tornadoes are one of the most powerful and deadly weather ... This is what creates the destruction path scene after a tornado passes. The next ...

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


Apr 19, 2016 ... Tornadoes are violent storms that kill 80 people each year. ... Tornado wind and debris cause most of the structural damage suffered, but nearly ...

www.ask.com/youtube?q=What Creates a Tornado&v=lmWh9jV_1ac
Aug 19, 2014 ... Meteorologist James Spann sheds light on the lifespan of tornadoes as .... not all tornadoes are very big, in fact most are quite small and cause ...

How a Tornado Forms


The first thing that is needed to produce a tornado is a thunderstorm. ... The warm air rises from the lower atmosphere causing an updraft, which mixes with the ...

How do tornadoes form? - eSchooltoday


Here is simple step by step description of how a tornado develops. ... but here is an explanation that many believe is the closest possible cause of tornadoes.

The Science of Tornadoes | Weather Underground


A tornado is a violently rotating column of air which descends from a ... and the surrounding winds may cause the updraft to begin rotating-and a tornado is born.

Types and Causes of Tornadoes - Conserve Energy Future


There are various types of tornadoes and they can characterized according to the level of damage they can cause. Fujita or Enhanced Fujita(EF) scale scale is a ...

What Are Tornadoes? - Definition, Causes & The Enhanced Fujita ...


Tornado Alley exists because the Great Plains get very hot in the summer. Updrafts are all too common, which as we now know creates thunderstorms and  ...

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


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

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


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?


May 30, 2013 ... The intense spinning of a tornado is partly the result of the updrafts and downdrafts in the thunderstorm (caused by the unstable air) interacting ...

Tornado Story | How Tornadoes Form - Dangerous Weather


Tornadoes are associated with large (supercell) thunderstorms that often grow to ... and hail in the thunderstorm cause the funnel to touch down creating a tornado .