noun
Fujiwhara effect
Meteorological term describing the interaction between two nearby cyclonic vortices. The spelling 'Fujiwara effect' is also seen.
台風が接近すると、藤原の効果によって複雑な動きをすることがある。
When typhoons approach each other, they can move in complex ways due to the Fujiwhara effect.
Named after Japanese meteorologist Sakuhei Fujiwhara, who described the effect in 1921.