Typhoon Yagi

Current Context : Super Typhoon Yagi’s started devastation across southern China and northern Vietnam.

• Yagi was the strongest autumn typhoon to strike China since 1949.
• It caused flooding and landslides in northern Vietnam.

About Cyclone

• Cyclone is a large-scale air mass that rotates around a strong center of low atmospheric pressure. It is accompanied by strong winds, heavy rain, and often a storm surge.
• Formation Conditions:Cyclones form over warm ocean waters (sea surface temperature of at least 26°C or 79°F) where there is sufficient moisture and instability.

Mechanism: Warm, moist air rises from the ocean surface, creating a low-pressure area. As air moves in to replace the rising air, it is heated and rises further, leading to the development of a cyclone.

Types of Cyclones:

• Tropical Cyclones:Form over tropical oceans and are known by different names based on their location:
  • Hurricane:In the North Atlantic and North Pacific.
  • Typhoon:In the Northwest Pacific Ocean.
  • Cyclone:In the Indian Ocean and South Pacific.
• Extraterrestrial Cyclones:Form over temperate regions and include:
  • Mid-Latitude Cyclones: Also known as extratropical cyclones or frontal cyclones, typically associated with fronts and occur outside the tropics.

Examples:

• Hurricanes:Hurricane Katrina (2005), Hurricane Sandy (2012).
• Typhoons:Typhoon Haiyan (2013), Typhoon Yagi (2018), (2024).
• Cyclones:Cyclone Amphan (2020), Cyclone Idai (2019).