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: 8
Displaced: 600
Region: Manaus
Countries: Brazil
From - To 12 Mar - 14 Mar
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 15-03-2023

SENDAI Indicator A N Country Location Info
death 8 Brazil Manaus
SENDAI Indicator B N Country Location Info
displaced 600 Brazil Manaus
SENDAI Indicator C N Country Location Info
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  

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.