Cyclone Yaas

A low-pressure area formed over the North Andaman Sea and adjoining east-central Bay of Bengal around May 22, 2021, and has further intensified into a severe cyclonic storm, named ‘Cyclone Yaas’.

Given below are the key facts about Cyclone Yaas important for the upcoming IAS Exam:

What type of cyclone is Yaas? Cyclone Yaas has been classified as a ‘Very Severe Cyclonic Storm (VSCS)’
What is the meaning of the word ‘Yaas’? The word has originated from the Persian language and mean ‘Jasmin’ in English
Which country has named the Cyclone, Yaas? The cyclone has been named Yaas by Oman
Indian States expected to be affected West Bengal, Orisha, Assam and Meghalaya
How are cyclones named?  13 countries of the World Meteorological Organization/United Nations Economic and Social Commission for Asia and the Pacific (WMO/ESCAP) Panel on Tropical Cyclones (PTC) name the cyclones

In May 2021, another cyclonic storm named ‘Cyclone Tauktae’ had affected the Indian states of Kerala, Gujarat, Maharashtra, Goa and Karnataka, along with two Union Territories: Daman & Diu and Lakshadweep. Read about this cyclonic storm at the linked article. 

Cyclone Yaas [UPSC Notes]:-Download PDF Here

Cyclone Yaas – Key Facts

Cyclone Yaas - Track of Cyclonic Storm

Cyclone Yaas – Track of Cyclonic Storm

  • The cyclone is expected to make landfall somewhere between Paradip (Orisha) and Sagar islands (West Bengal) on the evening of May 26, 2021
  • It has originated from the East-central Bay of Bengal
  • The Indian Meteorological Department (IMD) has issued rainfall warning in the following regions:
    • North Coastal Andhra Pradesh
    • Odisha
    • West Bengal and Sikkim
    • Jharkhand
    • Bihar
    • Assam and Meghalaya
  • 2021 is the fourth consecutive year that Odisha is being hit by a cyclone
  • As per IMD, squally wind speed reaching 55-65 kmph gusting to 75 kmph expected over north interior districts of Odisha, interior districts of Gangetic West Bengal between May 26th and 27th, 2021

UPSC 2022

Preparedness for Cyclones Yaas

  • 46 teams of the National Disaster Response Force (NDRF) have been positioned for relief and rescue operations in various coastal Indian states and Union Territories including, Odisha, West Bengal, Andhra Pradesh, Tamil Nadu and Puducherry
  • The Indian armed forces have been put on alert, several warships and aircraft have been set on standby for relief and rescue operations
  • A warning has been issued for rainfall, wind and high tides by IMD to all the areas expected to be affected by the cyclone
  • Fishermen were advised not to venture into the southeast Bay of Bengal and the South Andaman Sea from May 21 onwards
  • Forecast track and intensity of Cyclone Yaas, as released by IMD are given in the following table (as of May 24, 2021):
Date/Time(IST) Maximum sustained surface wind speed (Kmph) Category of cyclonic disturbance
24.05.21/1730 90-100 gusting to 110  Severe Cyclonic Storm
25.05.21/1130 155-165 gusting to 185  Very Severe Cyclonic Storm
26.05.21/1130 105-115 gusting to 125 Very Severe Cyclonic Storm
27.05.21/1730 35-45 gusting to 55 Depression

SCATSAT 1 – Scatterometer Satellite-1 or SCATSAT-1 was launched in 2016 and was developed by the Indian Space Research Organisation (ISRO) for weather forecasting, cyclone prediction, and tracking services for India. Read on to know more about this satellite at the linked article. 

Daily News

Bay of Bengal and Cyclone Yaas

Bay of Bengal sees approximately five times as many cyclones in comparison to the Arabian Sea. In addition, cyclones in the Bay are stronger and deadlier. 

The Bay of Bengal is constantly fed by fresh water through giant rivers like the Ganga and the Brahmaputra. The river water that empties into the Bay warms up at the surface and rises up as moisture. 

This makes it difficult for the warm layers of water to mix properly with the cooler layers of water below, keeping the surface always warm and ready to feed any potential cyclone over it. Cyclone Yaas is an outcome of the same process and had originated in the Eastcentral Bay of Bengal. 

For upcoming prelims examination, revise previous year Topic-wise UPSC Prelims Questions compiled in the linked article.

UPSC aspirants can also refer to the following information for exam preparation:

  • Temperate Cyclone (Extratropical Cyclones) The term “Extra-tropical” signifies that this type of cyclone generally occurs outside the tropics with a latitude range between 30° and 60°. These cyclones are formed along the polar front and low-pressure systems with associated cold fronts, warm fronts, and occluded fronts. 
  • Tropical cyclonesA tropical cyclone is a weather phenomenon that is essentially a rapidly rotating storm system with characteristics such as a low-pressure center, strong winds and thunderstorms that produce heavy rain, among others. Tropical cyclones are called by different names in different regions given below:
    • Hurricane – Atlantic
    • Typhoon – Western Pacific and the South China Sea
    • Willy-Willies – Western Australia
    • Cyclone – Indian Ocean
  • Bomb Cyclone It is actually used by meteorologists to indicate a mid-latitude cyclone that intensifies rapidly. It is a massive winter storm hammering the coast, bringing strong winds, flooding, ice and snow

Cyclone Yaas [UPSC Notes]:-Download PDF Here

Candidates looking forward to applying for the civil services exam can refer to the detailed UPSC Syllabus for the prelims and mains examination and accordingly start their preparation. 

For the latest exam updates, study material and preparation tips, visit BYJU’S.

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