Heavy rainfall associated with floods in southeastern Brazil in November–December 2021

Jose A. Marengo (), Marcelo E. Seluchi (), Ana Paula Cunha (), Luz Adriana Cuartas (), Demerval Goncalves (), Vinicius B. Sperling (), Andrea M. Ramos (), Giovanni Dolif (), Silvia Saito (), Fabiani Bender (), Tarcio Rocha Lopes (), Regina C. Alvala () and Osvaldo L. Moraes ()
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Jose A. Marengo: Brazilian National Center for Monitoring and Early Warning of Natural Disasters
Marcelo E. Seluchi: Brazilian National Center for Monitoring and Early Warning of Natural Disasters
Ana Paula Cunha: Brazilian National Center for Monitoring and Early Warning of Natural Disasters
Luz Adriana Cuartas: Brazilian National Center for Monitoring and Early Warning of Natural Disasters
Demerval Goncalves: Brazilian National Center for Monitoring and Early Warning of Natural Disasters
Vinicius B. Sperling: Brazilian National Center for Monitoring and Early Warning of Natural Disasters
Andrea M. Ramos: National Institute of Meteorology
Giovanni Dolif: Brazilian National Center for Monitoring and Early Warning of Natural Disasters
Silvia Saito: Brazilian National Center for Monitoring and Early Warning of Natural Disasters
Fabiani Bender: Brazilian National Center for Monitoring and Early Warning of Natural Disasters
Tarcio Rocha Lopes: Maringá State University
Regina C. Alvala: Brazilian National Center for Monitoring and Early Warning of Natural Disasters
Osvaldo L. Moraes: Brazilian National Center for Monitoring and Early Warning of Natural Disasters

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2023, vol. 116, issue 3, No 35, 3617-3644

Abstract: Abstract In southeast Brazil, heavy precipitation events during the summer trigger floods. These disasters are responsible for most loss of lives. In November and December 2021, the northern area of Minas Gerais and the southern part of Bahia were affected by periods of very heavy rain and intense floods. Heavy precipitation contributed to unusually high soil saturation that favored floods that claimed lives. Estimated losses totaled about $3.1 billion U.S. dollars from November to December 2021. Therefore, this study: 1. evaluates the meteorological conditions in November–December 2021, in particular from December 22 to 29, when it rained up to 300 mm above average in this region, 2. analyzes the floods, exacerbated by extreme rainfall events earlier in November and December, and 3. discusses monitoring and issuing risk alerts of these disasters by government agencies that helped minimize damage and property loss and reduce fatalities.

Keywords: Natural hazards; Heavy rainfall; Floods; Disaster risk reduction (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s11069-023-05827-z

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