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DAILY NEWS ANALYSIS

  • 26 December, 2019

  • Min Read

Typhoon Phanfone batters Philippines

Syllabus subtopic: Important Geophysical phenomena such as earthquakes, Tsunami, Volcanic activity, cyclone etc., geographical features and their location- changes in critical geographical features (including water-bodies and ice-caps) and in flora and fauna and the effects of such changes.

Prelims and Mains focus: About typhoon Phanfone; about tropical cyclones and its types

News: Typhoon Phanfone pummelled the central Philippines on Christmas Day, bringing a wet, miserable and terrifying holiday to millions in the mainly Catholic nation.

  • Though weaker, Phanfone was tracking a similar path to Super Typhoon Haiyan, the country’s deadliest cyclone on record which left more than 7,300 people dead or missing in 2013.

About Tropical cyclones

  • Tropical cyclones are violent storms that originate over oceans in tropical areas and move over to the coastal areas bringing about large scale destruction due to violent winds (squalls), very heavy rainfall (torrential rainfall) and storm surge.
  • They are irregular wind movements involving closed circulation of air around a low pressure centre. This closed air circulation (whirling motion) is a result of rapid upward movement of hot air which is subjected to Coriolis force. The low pressure at the center is responsible for the wind speeds.
  • The cyclonic wind movements are anti-clockwise in the northern hemisphere and clockwise in the southern hemisphere (This is due to Coriolis force).

Regional names for Tropical Cyclones

Regions

Name

Indian Ocean

Cyclones

Atlantic

Hurricanes

Western Pacific and South China Sea

Typhoons

Western Australia

Willy-willies

Source: The Hindu


DNA

17 Sep,2021

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