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: 1101881
Deaths: 15
Displaced: 25795
Region: Duque de Caxias
Countries: Brazil
From - To 05 Mar - 31 Mar
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 31-03-2023

SENDAI Indicator A N Country Location Info
death 1 Brazil Terra de Areia
death 1 Brazil Moema
death 8 Brazil Manaus
death 3 Brazil Ceará
death 2 Brazil Duque de Caxias
SENDAI Indicator B N Country Location Info
affected - Brazil Maranhão
displaced 100 Brazil Caruaru
displaced 100 Brazil Santa Cruz do Capibaribe
displaced 2000 Brazil Marabá
displaced 100 Brazil Rio Branco
displaced 22000 Brazil Rio Branco
displaced 700 Brazil Bandeirantes
displaced 600 Brazil Manaus
displaced 45 Brazil Ceará
displaced 150 Brazil Ceará
rescued 61 Brazil Moema
SENDAI Indicator C N Country Location Info
houses 15 Brazil Ceará
houses damaged 25 Brazil Rio Branco
houses damaged 250 Brazil Bandeirantes
houses damaged 130 Brazil Manaus
houses destroyed 11 Brazil Manaus

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2023-02-26 / 2023-04-07  

Sunday 26/02Monday 27/02Tuesday 28/02Wednesday 01/03Thursday 02/03Friday 03/03Saturday 04/03Sunday 05/03Monday 06/03Tuesday 07/03Wednesday 08/03Thursday 09/03Friday 10/03Saturday 11/03Sunday 12/03Monday 13/03Tuesday 14/03Wednesday 15/03Thursday 16/03Friday 17/03Saturday 18/03Sunday 19/03Monday 20/03Tuesday 21/03Wednesday 22/03Thursday 23/03Friday 24/03Saturday 25/03Sunday 26/03Monday 27/03Tuesday 28/03Wednesday 29/03Thursday 30/03Friday 31/03Saturday 01/04Sunday 02/04Monday 03/04Tuesday 04/04Wednesday 05/04Thursday 06/04Friday 07/04

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 and 700 displaced 05 Mar 2023 07 Mar 2023 GLOFAS
2 1 deaths 05 Mar 2023 07 Mar 2023 GLOFAS
3 1 deaths 08 Mar 2023 09 Mar 2023 GLOFAS
4 8 deaths and 600 displaced 12 Mar 2023 14 Mar 2023 GLOFAS
5 3 deaths and 195 displaced 16 Mar 2023 18 Mar 2023 GLOFAS
6 0 deaths 16 Mar 2023 18 Mar 2023 GLOFAS
7 0 deaths and 200 displaced 18 Mar 2023 20 Mar 2023 GLOFAS
8 0 deaths and 2000 displaced 21 Mar 2023 23 Mar 2023 GLOFAS
9 0 deaths and 22100 displaced 23 Mar 2023 25 Mar 2023 GLOFAS
10 2 deaths 30 Mar 2023 31 Mar 2023 GLOFAS

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.