Overall Green alert Flood
in Brazil

Flood impact summary

This flood is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID: 1100784
Deaths: 1
Displaced: -
Region: Região Geográfica Imediata de Blumenau
Countries: Brazil
From - To 26 Feb - 25 Mar
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 25-03-2021

SENDAI Indicator A N Country Location Info
death 1 Brazil Região Geográfica Imediata de Blumenau
SENDAI Indicator B N Country Location Info
affected - Brazil Vila Velha - State of Espirito Santo
affected - Brazil Vitoria
affected - Brazil Sao Domingos do Norte
affected - Brazil Pancas
affected 100 Brazil Região Geográfica Imediata de Pedreiras
affected 100 Brazil Região Geográfica Imediata de Pedreiras
affected 100 Brazil Região Geográfica Intermediária de Imperatriz
injured 3 Brazil Região Geográfica Imediata de Blumenau
SENDAI Indicator C N Country Location Info
houses damaged 32 Brazil Lagoa Vermelha
houses damaged 50 Brazil João Pessoa

Satellite Observation


Timeline of revisions

For accessing reports of previous advisories, please click on the advisory number in the table below.

IDAlert ColorPopulation affectedStart DateEnd DateSource
1 0 deaths 01 Mar 2021 03 Mar 2021 FloodList
2 0 deaths 26 Feb 2021 28 Feb 2021 FloodList
3 0 deaths 07 Mar 2021 09 Mar 2021 FloodList
4 0 deaths 06 Mar 2021 18 Mar 2021 FloodList
5 1 deaths 23 Mar 2021 25 Mar 2021 FloodList

Flood polygons

This polygon (translucent blue with a blue border) is drawn by the analysts recording the flood event. It is meant to include all the areas reported as affected, by official source or the media. It does not represent the area actually under water.

Microwave flood detection

Flooded area, as detected in microwaves by the Global Flood Detection System of the JRC, based on NASA TRMM/GPM observations. This system has a rather low resolution (of 5-10km) but is not affected by clouds.
For more details, see http://www.unisdr.org/files/9622_LBNA23303ENC002.pdf.
The areas with a flood signal along the coast are an artefact of the system and should not be considered.

Optical Flood detection

Flooded area as detected in optical wavelengths by NASA/MODIS, known as "MODIS Flood Product". Data are made available by NASA GSFC Flood Mapping Project, http://oas.gsfc.nasa.gov/floodmap/index.html. Resolution of 250m, heavily affected by cloud cover.