Suction Vortex

What is Suction Vortex?

Suction Vortex meaning A small but very intense vortex within a tornado circulation. Several suction vortices typically are present in a multiple-vortex tornado. Much of the extreme damage associated with violent tornadoes (F4 and F5 on the Fujita scale) is attributed to suction vortices.

 

reference: National Weather Service Glossary