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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 »
Difficulty: Easy
Source: www.ehow.com

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.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.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.

www.spc.noaa.gov/faq/tornado

May 1, 2017 ... At what wind speed of the cloud-to-ground vortex does a tornado begin? How close must two or more different tornadic circulations become to ...

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.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.wunderground.com/prepare/tornado

If you are in an urban or congested area, do not try and outrun the tornado in ... Things start to happen when a storm system aloft moves east and begins to lift ...