Fujiwhara effect

== English == === Etymology === Named after Japanese meteorologist Sakuhei Fujiwhara who initially described the effect. === Noun === Fujiwhara effect (plural Fujiwhara effects) (meteorology) A phenomenon that occurs when two nearby cyclonic vortices move around each other and close the distance between the circulations of their corresponding low-pressure areas. Synonyms: Fujiwhara interaction, binary interaction