http://www.universetoday.com/52055/how-tornadoes-are-formed/
www.weatherwizkids.com/weather-tornado.htm
http://gohsep.la.gov/factsheets/whattodoinatornado.htm
http://wiki.answers.com/Q/Where_is_the_next_tornado_likely_to_hit?#slide=2
www.weatherwizkids.com/weather-tornado.htm
http://gohsep.la.gov/factsheets/whattodoinatornado.htm
http://wiki.answers.com/Q/Where_is_the_next_tornado_likely_to_hit?#slide=2