A tornado is a violently rotating column of air that rotates while in contact with
both the surface ... The Fujita scale rates tornadoes by damage caused and has
been replaced in some countries by t...
Apr 19, 2016 ... Tornado wind and debris cause most of the structural damage suffered, but
nearly half of the injuries from such disasters occur after the tornado ...
www.ask.com/youtube?q=What Creates a Tornado&v=lmWh9jV_1ac
Aug 19, 2014 ... View full lesson: http://ed.ted.com/lessons/how-do-tornadoes-form-james-spann
Tornadoes are the most violent storms on Earth, with wind ...
May 30, 2013 ... The intense spinning of a tornado is partly the result of the updrafts and
downdrafts in the thunderstorm (caused by the unstable air) interacting ...
Sep 18, 2016 ... The formation of a tornado follows a clear set of steps. ... This change occurs at
an increasing altitude and creates an invisible horizontal ...
Here is simple step by step description of how a tornado develops. ... but here is
an explanation that many believe is the closest possible cause of tornadoes.
Tornadoes are associated with large (supercell) thunderstorms that often grow to
... and hail in the thunderstorm cause the funnel to touch down creating a tornado
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 ...
According to the National Oceanographic and Atmospheric Administration,
tornadoes form when warm air creates a rotating updraft in a powerful
Most tornadoes are created as a result of thunderstorms that form at the meeting
point between humid air from the Gulf of Mexico and dry, cooler air from Canada