According to The India Met Department (IMD) Cyclone Fani in South East Bay of Bengal  intensifed from a severe cyclonic storm into a ‘very severe cyclonic storm’ as it approaches coastal Tamil Nadu by 30 April.

A very severe cyclonic storm means Fani will get ‘category three’ storm status on five-step Saffir-Simpson scale (or Saffir–Simpson hurricane wind scale).

• It was formed at low pressure region in south east of Sumatra (Indonesian island), which further intensified into a depression.
• The Saffir-Simpson Hurricane Wind Scale classifies hurricanes or Western Hemisphere tropical cyclones that exceed intensities of tropical depressions and tropical storms into five categories or 1 to 5 rating based on intensities of their sustained winds.

Tropical Cyclone- They are also known as Hurricanes (in Atlantic), Typhoons (in Western Pacific and South China Sea), Willy-willies (in Western Australia).