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Typhoon Parma (left) and Melor (right) interacting with each other in the Philippine Sea on October 6, 2009.. The Fujiwhara effect, sometimes referred to as the Fujiwara effect, Fujiw(h)ara interaction or binary interaction, is 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.
The effect is named after Dr. Sakuhei Fujiwhara who was the chief of the Central Meteorological Bureau in Tokyo, Japan, shortly after the First World War. In 1921, he wrote a paper describing the ...
Where an extratropical cyclone encounters another extratropical cyclone (or almost any other kind of cyclonic vortex in the atmosphere), the two may combine to become a binary cyclone, where the vortices of the two cyclones rotate around each other (known as the "Fujiwhara effect").
A cluster of tropical activity has developed across the Pacific Ocean, as three features battle for dominance and hold the potential for a phenomenon called the Fujiwhara Effect to occur.
Small wobbles in a tropical cyclone's track can occur when the convection is distributed unevenly within its circulation. This can be due to changes in vertical wind shear or inner core structure. [7] Because of this effect, forecasters use a longer term (6 to 24 hours) motion to help forecast tropical cyclones, which acts to smooth out such ...
California's wild storm: The Fujiwhara effect, a bomb cyclone, even landspout, tornado warnings Christian Martinez, Hayley Smith, Susanne Rust, Luke Money March 21, 2023 at 9:18 PM
The storm surge, or the increase in sea level due to the cyclone, is typically the worst effect from landfalling tropical cyclones, historically resulting in 90% of tropical cyclone deaths. [16] The relatively quick surge in sea level can move miles/kilometers inland, flooding homes and cutting off escape routes.
[48] [21] Other record-breaking rainfall events caused by tropical cyclones in Réunion include Cyclone Denise, which dropped 1,144 mm (45.0 in) of rain in 12 hours and 1,825 mm (71.9 in) in 24 hours at Foc Foc; an unnamed tropical cyclone in 1958 caused 2,467 mm (97.1 in) of rain to fall at Aurere; and Cyclone Gamede dropped 3,929 mm (154.7 in ...