Extratropical Cyclone in southern Brazil

Torrential rain and winds caused by an extratropical cyclone left 27 people dead in southern Brazil at the start of September. The death toll is the highest recorded in the state for a climate event.

Several municipalities in Rio Grande do Sul were affected after more than 300mm (11 inches) of rain hit the state in less than 24 hours, triggering floods as rivers overflowed their banks and landslides. A total of 60 cities were battered by the storm and at least 1,650 people made homeless.

In the days following the disaster, rescuers searched for people stranded in flooded areas and the police and military deployed aircraft, helicopters and boats to help with the search and rescue operation.

This extreme flood event comes after Rio Grande do Sul was slammed by another cyclone in June that claimed the lives of at least 11 people. One of the many weather-related disasters to have recently struck Brazil.

Type d'événement: Inondation
Lieu de l'événement: Brazil
Date d'activation de la Charte: 2023-09-06
Heure d’activation de la location: 23:46
Fuseau horaire d'activation de la Charte: UTC-03:00
Demandeur de charte: CENAD
Identifiant d'activation: 837
Gestion de projet: Pedro Youssef (CENAD)
Valeur ajoutée: Laercio Massaru Namikawa (INPE),
UFRGS,
Alisson Oliveira (INPE),
Luiza Rosa (UFRGS),
SGB,
Artur Jose Soares Matos (SGB),
Denilson Jesus (CPRM),
NOAA VA (NOAA),
Sergio Molano (UFRGS),
INPE,
Rodrigo Augusto Stabile (CEMADEN),
Thales Korting (INPE)

Extratropical Cyclone in southern Brazil

Urban Areas Impacted by Flood in Montenegro, State of Rio Grande do Sul, Brazil

Urban Areas Impacted by Flooding in São Sebastião do Caí, State of Rio Grande do Sul, Brazil

Areas affected by flooding in Montenegro, State of Rio Grande do Sul, Brazil

Areas affected by flooding in Montenegro and Pareci Novo, State of Rio Grande do Sul, Brazil

Areas affected by Flooding in São Sebastião do Caí, Rio Grande do Sul, Brazil

Areas affected by flooding in Cruzeiro do Sul, State of Rio Grande do Sul, Brazil

Urban Areas Impacted by Flooding in Pareci Novo, State of Rio Grande do Sul, Brazil

Areas affected by flooding around Pareci Novo, State of Rio Grande do Sul, Brazil

Areas affected by flooding in and around Colinas, State of Rio Grande do Sul, Brazil

Water Depth in Areas affected by Flooding in Colinas, State of Rio Grande do Sul, Brazil

Areas affected by the flooding of the Caí River in São Sebastião do Caí, Rio Grande do Sul, Brazil

Areas affected by the flooding of the Caí River in Pareci Novo, Rio Grande do Sul, Brazil

Affected areas by flooding in Pareci Novo and São Sebastião do Caí, Rio Grande do Sul, Brazil

Areas affected by the flooding of the Caí River near Capela de Santana, Rio Grande do Sul, Brazil

Areas affected by the flooding of the Caí River in Montenegro, Rio Grande do Sul, Brazil

Areas affected by the flooding of the Caí River near urban areas in Montenegro, Rio Grande do Sul, Brazil

Areas affected by flooding from Muçum to Bom Retiro do Sul, State of Rio Grande do Sul, Brazil

Areas affected by the flooding of the Caí River near Montenegro and Capela de Santana, Rio Grande do Sul, Brazil

Areas affected by Flooding in Montenegro and Capela de Sanatana, Rio Grande do Sul, Brazil

Urban areas affected by flooding in Montenegro city, Rio Grande do Sul, Brazil

Areas affected by flooding in Montenegro and Capela de Santana, Rio Grande do Sul, Brazil

Urban areas affected by floods in Muçum, Rio Grande do Sul, Brazil

Areas affected by the flooding of the Arroio do Meio in Muçum, Rio Grande do Sul, Brazil

Floods near urban areas in Colinas, Rio Grande do Sul, Brazil

Floods near urban areas in Arroio do Meio, Rio Grande do Sul, Brazil

Floods near urban areas in Roca Sales, Rio Grande do Sul, Brazil

Urban areas affected by floods in Encantado, Rio Grande do Sul, Brazil

Areas affected by flooding in and around Montenegro, State of Rio Grande do Sul, Brazil

Areas affected by flooding in Roca Sales, Rio Grande do Sul, Brazil

Areas affected by floods in Colinas, Rio Grande do Sul, Brazil

Areas affected by flooding in Lajeado and Estrela, Rio Grande do Sul, Brazil

Urban areas affected by floods in Estrela, Rio Grande do Sul, Brazil

Water depth of floods in Muçum, Rio Grande do Sul, Brazil

Flooded buildings and water depth in Roca Sales, State of Rio Grande do Sul, Brazil

Flooded buildings and water depth in Muçum, State of Rio Grande do Sul, Brazil

Flooded buildings and water depth in Encantado, State of Rio Grande do Sul, Brazil

Flooded buildings and water depth in Arroio do Meio, State of Rio Grande do Sul, Brazil

Flooded buildings and water depth in Santa Tereza, State of Rio Grande do Sul, Brazil

Areas affected by flooding of the Taquari and Antas rivers from Muçum to Triunfo, State of Rio Grande do Sul, Brazil

Flooded buildings and water depth in Colinas, State of Rio Grande do Sul, Brazil

Areas affected by flooding in Montenegro, State of Rio Grande do Sul, Brazil

Areas affected by flooding in south-western Rio Grande do Sul, Brazil

Post-Flooding Impacts and Geomorphological Features at the Taquari River Basin - Upstream of Muçum, Rio Grande do Sul, Brazil

Areas affected by flooding in Bom Retiro do Sul, Brazil

Flood Mapping in the Guaiba Hydrographic Region and the Camaqua Watershed, Rio Grande do Sul, Brazil

Dam Break Scenario based on Height Above Nearest Drainage point

The Depth of Water along the Taquari and Antas rivers in Encantado, State of Rio Grande do Sul, Brazil

Impacts of Flooding and Post-Flood Geomorphological Features at the Taquari River Basin, North East of Encantado, Brazil

Areas affected by the flooding of the Ibicuí River in Manoel Viana, Rio Grande do Sul, Brazil

Areas affected by the flooding of the Uruguai River in São Borja, Retiro do Sul, Brazil

Flooded Areas in Muçum Compared With Risk Areas From a Geological Survey of Brazil

Flooded Areas in Encantado Compared with Risk Areas from a Geological Survey of Brazil

Probable Affected Extents based on Copernicus Global Digital Elevation Model and HAND model in the municipality of Uruguaiana, Brazil

Probable Affected Extents based on Copernicus Global Digital Elevation Model and HAND model in the municipality of Uruguaiana, Brazil

Increased water extents of the Capingui Dam, Brazil

Extent of Flooding compared to Dry Season Water Extents in the Rio Grande do Sul state, Brazil

Flooded areas in Porto Alegre Islands, Rio Grande do Sul, Brazil

Areas affected by flooding in Uruguaiana, Rio Grande do Sul, Brazil

Areas affected by Flooding near Muçum and Encantado, State of Rio Grande do Sul, Brazil

Flooding, shown as Height Above the Nearest Drainage, around Montenegro, State of Rio Grande do Sul, Brazil

Flooding in Brazil

Flooding in Brazil

Flooding in Brazil

Extratropical Cyclone in southern Brazil