Types of Tornado

A multiple vortex tornado is a tornado that contains several vortices rotating around and inside of and part of the main vortex ( http://en.wikipedia.org/wiki/Multiple_vortex_tornado)These multiple vortices are somewhat similar to eyewall mesovortices found in intense tropical cyclones (http://en.wikipedia.org/wiki/Multiple_vortex_tornado). The only times multiple vortices may be visible are when the tornado is first forming or when condensation and debris is balanced enough so that subvortices are apparent without being obscured (http://en.wikipedia.org/wiki/Multiple_vortex_tornado). They are responsible for most cases where narrow arcs of extreme destruction lie right next to weak damage within tornado paths (http://en.wikipedia.org/wiki/Multiple_vortex_tornado)