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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 ...

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 ... Here's what scientists do know: A tornado, or ...

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.

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.wunderground.com/resources/education/tornadoFAQ.asp

Where do tornadoes most often occur in the United States? ... Things start to happen when a storm system aloft moves east and begins to lift the various layers.

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. ... Tornadoes can form anywhere, at any time of year, but most occur between April and July, either ... Mexico Starts To Dig Out From Huge Quake That Killed 217.

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 ...

www.scientificamerican.com/video/how-do-tornadoes-form2013-04-23

Oct 16, 2014 ... Every year tornadoes rip through the U.S. Midwest, leaving death, injury and billions of dollars of damage in their wake. Where do these ...