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www.ask.com/youtube?q=How Does a Tornado Start&v=tKSHU0E0tjI
Oct 27, 2010 ... Videographer Allen Fairbanks recreates the progress of the Chickamauga Dam tornado from the Wall Cloud to touchdown.

Tornadoes - Weather Wiz Kids weather information for kids

www.weatherwizkids.com/weather-tornado.htm

What is a tornado? A tornado is a violent rotating column of air extending from a thunderstorm to the ground. ... Once they become heavy, they will start to fall.

Tornado Story | How 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 of warm humid air will begin to rise very quickly. 1.

How Do Tornadoes Form - Universe Today

www.universetoday.com/75695/how-do-tornadoes-form/

Oct 14, 2010 ... The formation of a tornado follows a clear set of steps. First there a change in ... Lastly, a tornado develops and starts to wreak its destruction.

How do tornadoes form? - eSchooltoday

eschooltoday.com/natural-disasters/tornadoes/how-do-tornadoes-form.html

tornado tips Step 1: Like all winds and storms, tornadoes begin when the sun heats up the surface of the land. As the warm, less heavy air begins to rise, it meets ...

Earth Science for Kids: Weather - Tornadoes - Ducksters

www.ducksters.com/science/earth_science/tornadoes.php

Kids learn about tornadoes including how they form, characteristics, types including ... During a tornado "watch" you should begin preparing for a tornado.

Tornado Facts: Causes, Formation & Seeking Shelter - LiveScience

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

Apr 19, 2016 ... Tornadoes are violent storms that kill 80 people each year. Here are some ... Deadly Oklahoma Twister Ends Slow Start to Tornado Season.

How do tornadoes die? | Weather - Home - WFMZ

www.wfmz.com/weather/How-do-tornadoes-die/186720

Tornadoes are able to die off when they move over colder ground or when the cumulonimbus clouds above them start to break up.

HOW DOES A TORNADO FORM? - Weather Prediction Education

www.theweatherprediction.com/habyhints2/417/

A tornado is a violently rotating column of air in contact with the earth's land surface ... If it not does originate from a thunderstorm then it is a dust devil circulation.

How a Tornado Forms in 4 Steps - Popular Mechanics

www.popularmechanics.com/science/environment/a15633/how-a-tornado-forms-in-4-steps/

May 19, 2015 ... Warm, moist air, usually from the south, is lifted by a warm or cold front, causing an updraft. The moisture condenses into clouds and ...

Answer
How Does a Tornado Start?
For a tornado to form, two things are needed--a warm, humid air mass, and a cold, dry air mass. Thunderstorms usually contain large swells of warm air. When the warm air moves upward into an area of cold air, instabilities will begin to form. The cap of... More »
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The Science of Tornadoes | Weather Underground

www.wunderground.com

A tornado is a violently rotating column of air which descends from a thunderstorm ... far enough down to begin affecting the ground, then it becomes a tornado.

How a Tornado Forms

people.uwec.edu

The first thing that is needed to produce a tornado is a thunderstorm. ... single cell storm, which is not as common and does not produce much if any damage. ... If, in this area of the tornado, the wind that is rising up in the mesocyclone starts to ...

How Tornadoes are Formed - Universe Today

www.universetoday.com

Jan 25, 2010 ... However, how does a tornado form? ... The tornado starts forming when a downdraft brings the mesocycle down near the grown starting the ...