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Fujiwhara effect
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The Fujiwhara effect, sometimes referred to as the Fujiwhara interaction or binary interaction, is a phenomenon that occurs when two nearby cyclonic vortices move around each other and close the dista
Hurricanes Imelda (left) and Humberto (right) displaying the Fujiwhara effect during the 2025 Atlantic hurricane season.
Hurricanes Imelda (left) and Humberto (right) displaying the Fujiwhara effect during the 2025 Atlantic hurricane season.
Typhoon Parma (left) and Melor (right) interacting with each other in the Philippine Sea on October 6, 2009.
Typhoon Parma (left) and Melor (right) interacting with each other in the Philippine Sea on October 6, 2009.
Sakuhei Fujiwhara, the meteorologist who discovered the phenomenon.
Sakuhei Fujiwhara, the meteorologist who discovered the phenomenon.