An interaction where tropical cyclones within a certain distance (300 - 750 nautical miles, depending on the sizes of the cyclones) of each other begin to rotate about a common midpoint. Typically, one of the cyclones becomes dominant while the other weakens.

Interaction of two binary cyclones in which both orbit cyclonically about their geometric centre; named after the pioneering laboratory experiments of Fujiwhara (1921).

A binary interaction where tropical cyclones within a certain distance (300-750 nm depending on the sizes of the cyclones) of each other begin to rotate about a common midpoint.