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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.

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 thunderstorm ... If the funnel extends far enough down to begin affecting the ground, then it ...

How Tornadoes Form and Why They're so Unpredictable

news.nationalgeographic.com/2015/05/150511-tornadoes-storms-midwest-weather-science/

May 11, 2015 ... A tornado lowers to the ground near Chickasha, Oklahoma, on May 6. May and June tend to have more tornadoes than any other months in ...

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. ... Deadly Oklahoma Twister Ends Slow Start to Tornado Season; Rope Tornado ...

How a Tornado Forms

people.uwec.edu/jolhm/eh/barnier/tornado.htm

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 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.

Q & A: How do tornadoes form? | Department of Physics | University ...

van.physics.illinois.edu/qa/listing.php?id=2211

How do tornadoes begin? - Brittany Hart (age 7) Sullivan Elementary, IL. A: Brittany - In order for a tornado to form, a number of different things have to happen.

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 ...

How does a tornado form? - Tornado Chaser

www.tornadochaser.net/tornado.html

Below is one example of how a typical tornado may form. There is still ... Inside the storm these spinning winds can begin the formation of a tornado. On the ...

Severe Weather 101: Tornado Basics

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

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

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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Tornadoes - Weather Wiz Kids weather information for kids

www.weatherwizkids.com

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.

How Do Tornadoes Form - Universe Today

www.universetoday.com

Dec 24, 2015 ... 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.

Tornado Story | How Tornadoes Form - Dangerous Weather

www.eo.ucar.edu

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.