A multi-hazard perspective on the São Sebastião-SP event in February 2023: What made it a disaster?

Código

XXV-SBRH0287

Autores

Maria Isabel Arango Carmona, Cassiano Bastos Moroz, Joaquin Vicente Ferrer, Luke Oberhagemann, Guilherme Samprogna Mohor, Amalie Skålevåg, Nazaré Suziane Soares, Andreas Trojand, Fiorella Vega Jacome, Annegret Thieken

Tema

16 - Hidroclimatologia, Segurança Hídrica, Risco, Escassez, Inundações e Desastres

Resumo

The historical rainfall recorded at the coast of São Paulo State during the Carneval weekend of 2023, surpassing 600 mm in less than 24h, lead to 571 landslides, more than 1000 people displaced and 64 deaths in São Sebastião. Disaster impacts result from the interplay of hazard processes, exposure of human settlements and infrastructures, and their vulnerability; hence, disasters are not natural. In this paper, we present a first event report including an analysis of the rainfall amounts, the warning situation, and the growth of urban areas into hazard-prone areas.