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Remote sensing of extreme flash floods over two southern states of India during North-East monsoon season of 2020

Author

Listed:
  • Anoop Kumar Mishra

    (Sathyabama Institute of Science and Technology)

  • Vanganuru Nagaraju

    (Sathyabama Institute of Science and Technology)

Abstract

An area of low-pressure developed over the west-central Bay of Bengal during the second week of October in 2020. It further intensified into a deep depression and moved gradually towards the north-west resulting in extreme rainfall over Andhra Pradesh and Telangana during October 13–14, 2020. Extreme rainfall events affected both states submerging low-lying regions, triggering home collapses, prompting the evacuation of more than 90,000 people to safer places and causing heavy casualities. This study focuses on monitoring the flood event of Andhra Pradesh and Telangana using satellite observations. Nagarkurnool, Cyberabad, Hyderabad, Khairatabad, LB Nagar, Ranga Reddy and Osmansagar were the most affected districts of the states due to heavy rainfall. Nagarkurnool received the maximum rainfall of about 75 mm at 13:30 UTC on October 13. Hyderabad, Cyberabad and Nagarkurnool recorded cumulative rainfall in excess of 400 mm on October 13, 2020. The sudden and heavy downpour from multiple extreme rain events on October 13 caused high river discharge which resulted in extreme flash floods over these districts. Results reported in this study highlight the significance of remote sensing observations for exploring flash flood events.

Suggested Citation

  • Anoop Kumar Mishra & Vanganuru Nagaraju, 2021. "Remote sensing of extreme flash floods over two southern states of India during North-East monsoon season of 2020," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 107(2), pages 2015-2020, June.
    • Handle: RePEc:spr:nathaz:v:107:y:2021:i:2:d:10.1007_s11069-021-04631-x
    DOI: 10.1007/s11069-021-04631-x
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    References listed on IDEAS

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    1. Anoop Kumar Mishra & Vanganuru Nagaraju, 2019. "Space-based monitoring of severe flooding of a southern state in India during south-west monsoon season of 2018," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 97(2), pages 949-953, June.
    2. Anoop Kumar Mishra & Mohammad Suhail Meer & Vanganuru Nagaraju, 2019. "Satellite-based monitoring of recent heavy flooding over north-eastern states of India in July 2019," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 97(3), pages 1407-1412, July.
    3. Anoop Mishra, 2015. "A study on the occurrence of flood events over Jammu and Kashmir during September 2014 using satellite remote sensing," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 78(2), pages 1463-1467, September.
    4. Anoop Kumar Mishra, 2016. "Monitoring Tamil Nadu flood of 2015 using satellite remote sensing," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 82(2), pages 1431-1434, June.
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    Cited by:

    1. Dipsikha Devi & Anupal Baruah & Arup Kumar Sarma, 2022. "Characterization of dam-impacted flood hydrograph and its degree of severity as a potential hazard," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 112(3), pages 1989-2011, July.

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