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<p>An unprecedented precipitation event in Rio Grande do Sul, Brazil, between April and May 2024 caused widespread floods and landslides. This extreme event impacted 96% of the state’s municipalities, affecting approximately 2.4 million people and resulting in 183 deaths. This article reports the magnitude of this extreme event, focusing on the preliminary results of a comprehensive landslide inventory. Our analysis revealed that this event triggered 15,376 landslides across approximately 18,000 km<sup>2</sup>, with 16,862 landslide initiation points. This event represents the largest landslide occurrence ever recorded in Brazil, measured by quantity. This study provides a scientific analysis of the event’s scale, spatial distribution and the associated topographic, environmental and infrastructural conditions.</p>

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The biggest landslide event in Brazil: preliminary analysis of the Rio Grande do Sul mega disaster in May 2024

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年8月28日

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  • Clódis de Oliveira Andrades-Filho,
  • Lorenzo Fossa Sampaio Mexias,
  • Renata Pacheco Quevedo,
  • Pâmela Boelter Herrmann,
  • Guilherme Garcia de Oliveira,
  • Édipo Henrique Cremon,
  • Beatriz Rosa da Cargnin,
  • Mateus da Silva Reis,
  • Kleverson Ribeiro Novakoski,
  • Dafne Cavalheiro dos Santos,
  • Claudia Robbi Sluter,
  • Andrea Lopes Iescheck,
  • Laurindo Antonio Guasselli,
  • Milton Ribeiro Junior,
  • Nelson Luis Sambaqui Gruber,
  • Ruy Paulo Philipp,
  • Cassiana Roberta Lizzoni Michelin,
  • Antonio Pedro Viero,
  • Clovis Gonzatti,
  • Maria Luiza Correa da Câmara Rosa,
  • Eduardo Barboza-Pinzon,
  • Raul Gick Schumacher,
  • Sergio Mauricio Molano Cárdenas,
  • Victor Matheus Soares,
  • Washington Peres Núñez,
  • Renato Ribeiro Mendonça,
  • Mauricio Oliveira Righi da Silva,
  • Michelle Cardoso da Silva,
  • Luis Antonio Bressani,
  • Luana Daniela da Silva Peres,
  • Lucca Belle Mevel,
  • João Igor Dorneles,
  • José Antônio Cacciatore,
  • Felipe de Medeiros Jacques,
  • Lauren da Cunha Duarte,
  • Felipe de Carvalho Diniz,
  • Leandro Petry,
  • Gabriel Schwarzer,
  • Marciano Carneiro,
  • Bárbara Giaccom

摘要

An unprecedented precipitation event in Rio Grande do Sul, Brazil, between April and May 2024 caused widespread floods and landslides. This extreme event impacted 96% of the state’s municipalities, affecting approximately 2.4 million people and resulting in 183 deaths. This article reports the magnitude of this extreme event, focusing on the preliminary results of a comprehensive landslide inventory. Our analysis revealed that this event triggered 15,376 landslides across approximately 18,000 km2, with 16,862 landslide initiation points. This event represents the largest landslide occurrence ever recorded in Brazil, measured by quantity. This study provides a scientific analysis of the event’s scale, spatial distribution and the associated topographic, environmental and infrastructural conditions.