Fujiwhara Effect (Indian Express)

  • 24 Aug 2023

What is the News ?

Recently, powerful winds tormented the Bay Area and other parts of Central and Southern California, uprooting trees and disrupting the power supply due to Fujiwhara effect.

Facts About:

  • It was identified by a Japanese meteorologist Sakuhei Fujiwhara.
  • It was observed for the first time over the western Pacific Ocean, when typhoons Marie and Kathy merged in 1964.

What is it?

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  • When two hurricanes (or cyclones, depending on where you live), spinning in the same direction, are brought close together, they begin ‘an intense dance around their common center’ – this interaction between two cyclones is called the Fujiwhara effect.

 

When it Occur?

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  • If one hurricane’s intensity overpowers the other, then the smaller one will orbit it and eventually crash into its vortex to be absorbed.
  • On the other hand, if two storms of similar strengths pass by each other, they may gravitate towards each other until they reach a common center and merge, or merely spin each other around for a while before shooting off on their own paths.
  • In rare instances, the two ‘dancing’ cyclones, if they are intense enough, may merge with one another, leading to the formation of a mega cyclone capable of wreaking havoc along coastlines.

Experts have noted the rising frequency of this unusual effect, attributing it to a rapidly warming world and the subsequent heating of ocean waters.



Source: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwia1b_gj6OBAxXpSmwGHVb_DTQQFnoECBUQAQ&url=https%3A%2F%2Findianexpress.com%2Farticle%2Fexplained%2Fexplained-climate%2Ffujiwhara-effect-cyclones-dance-8905398%2F&usg=AOvVaw0_moE3dRI3IZbhz8XqmBkl&opi=89978449