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Sources

  • American Meteorological Society, 2008. http://amsglossary.allenpress.com/glossary/search?id=tornado1
  • Allen, Jean. "Tornadoes." Capstone Press, 2001.
  • Justice, Alonzo A. "Seeing the Inside of a Tornado." noaa.gov, 2008. http://www.history.noaa.gov/stories_tales/inside_tornado.html
  • "Tornadoes: Nature's Most Violent Storms." noaa.gov, 2008. http://www.nssl.noaa.gov/edu/safety/tornadoguide.html