Typhoon Yagi

Why in  news?

• Recently, Typhoon Yagi developed in the South China Sea.
• It is considered to be the world's second most powerful tropical cyclone this year after Beryl.
• Yagi originated in a low pressure area off Palau.
• It was named Yagi by the Japan Meteorological Agency (JMA).

Typhoon

• Typhoon is a type of cyclone.
• Its main feature is strong winds and heavy rainfall
• It has different names depending on the place of origin.
  • Typhoon: In the China Sea and Pacific Ocean.
  • Hurricane: In the Caribbean Sea and Atlantic Ocean
  • Tornado: In West Africa and the United States.
  • Willy-Willies: In northwestern Australia.
  • Tropical cyclone: ​​In the Indian Ocean region.

• The scientific name of all these types of storms is tropical cyclone.
• Tropical cyclones originate on the ocean surface between 8 degrees latitude and 15 degrees latitude in the northern and southern hemispheres.
• They originate in the western part of the oceans where the temperature is relatively higher than the eastern parts.
• Their direction is anticlockwise in the northern hemisphere and clockwise in the southern hemisphere.

• Factors of formation
  • Sustained sea temperature of 27°C or above required
  • High humidity in the middle troposphere
  • Average wind speed of about 120 km/h
  • Presence of Coriolis force to initiate rotation.
  • An initial low pressure area