Cyclone
A cyclone is an weather phenomenon, with the wind inside the closed, circular fluid inside the cyclone moving at extreme speeds.

In 2372, while attempting to land the  on a planet in the Delta Quadrant, the ship was caught in a cyclone created by the Sky Spirits and was nearly destroyed by it, until Commander Chakotay was able to establish a dialogue with the chief Sky Spirit that Humans were not their enemy and the cyclone disappeared. ()

See also 
 Ionic cyclone

External link 
 

de: Zyklon
Meteorology