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Tornado - Wikipedia


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

How Do Tornadoes Form? - Universe Today


Sep 18, 2016 ... The formation of a tornado follows a clear set of steps. ... This change occurs at an increasing altitude and creates an invisible horizontal ...

www.ask.com/youtube?q=What Creates a Tornado&v=lmWh9jV_1ac
Aug 19, 2014 ... View full lesson: http://ed.ted.com/lessons/how-do-tornadoes-form-james-spann Tornadoes are the most violent storms on Earth, with wind ...

What causes tornadoes?


The intense spinning of a tornado is partly the result of the updrafts and downdrafts in the thunderstorm (caused by the unstable air) interacting with the wind ...

How Tornadoes Form and Why They're so Unpredictable


May 11, 2015 ... A tornado lowers to the ground near Chickasha, Oklahoma, on May 6. ... Half of those deaths are caused by the strongest one percent of the ...

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 .

Prepare for a Tornado | Weather Underground


Where will you go when a tornado warning has been issued for your county or city? Is it a ... turn them into missiles. Flying debris cause the most tornado deaths .

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 ...

Severe Weather 101: Tornado Basics


The most common and practical way to determine the strength of a tornado is to look at the damage it caused. From the damage, we can estimate the wind ...

Severe Weather 101: Tornado FAQ


It is generally believed that tornadic wind speeds can be as high as 300 mph in the most violent tornadoes. Wind speeds that high can cause automobiles to ...

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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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 ...

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 a tornado to form? | Reference.com


According to the National Oceanographic and Atmospheric Administration, tornadoes form when warm air creates a rotating updraft in a powerful thunderstorm.