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en.wikipedia.org/wiki/Tornado

A tornado is a rapidly rotating column of air that is in contact with both the surface of the Earth .... Tornadoes often begin as funnel clouds with no associated strong winds at the surface, and not all funnel .... Tornadic storms do not contain more lightning than other storms and some tornadic cells never produce lightning at all.

www.ask.com/youtube?q=How+Does+a+Tornado+Start&v=lmWh9jV_1ac
Aug 19, 2014 ... ... http://ed.ted.com/lessons/how-do-tornadoes-form-james-spann ... Ask I do that think to see how close the storm is from my house it starts to ...

www.weatherwizkids.com/weather-tornado.htm

Tornado How do tornadoes form? Most tornadoes form from thunderstorms. ... What do tornadoes look like? ... Once they become heavy, they will start to fall.

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

May 11, 2015 ... Tornadoes remain deadly and relatively unpredictable, despite recent advancements in weather science. Here's what scientists do know:.

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.

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

May 19, 2015 ... As air rushes in to equalize the pressure, a tornado is formed. ... Become a Filmmaker in 4 Easy Steps · Do You Want to Be a Tornado Chaser?

scied.ucar.edu/shortcontent/how-tornadoes-form

A tornado can form where winds blow at different speeds causing rotation (A) which can tighten and speed into a funnel cloud if caught in the flow of air moving  ...

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

How Do Tornadoes Form? Tornadoes are associated with large ... A column of warm humid air will begin to rise very quickly. 1. Air Rotates Because of Wind ...

www.cnn.com/videos/tv/2015/04/02/orig-how-tornadoes-form.cnn

Apr 2, 2015 ... CNN meteorologist Jennifer Gray explains how tornadoes form and why they are one of the most dangerous weather phenomena on Earth.