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: 1102360
Deaths: 2
Displaced: 359
Region: Rio de Janeiro
Countries: Brazil
From - To 28 Nov - 10 Dec
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 10-12-2023

SENDAI Indicator A N Country Location Info
death 2 Brazil Rio de Janeiro
SENDAI Indicator B N Country Location Info
affected 1 Brazil Botucatu
displaced 297 Brazil Rio de Janeiro
displaced 60 Brazil Natal
displaced 2 Brazil Minas Gerais
rescued 1 Brazil Cazeca
rescued 1 Brazil Tabajaras
SENDAI Indicator C N Country Location Info
houses damaged 20 Brazil Natal

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2023-11-21 / 2023-12-17  

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

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 60 displaced 28 Nov 2023 30 Nov 2023 GLOFAS
2 0 deaths and 2 displaced 04 Dec 2023 05 Dec 2023 GLOFAS
3 0 deaths 05 Dec 2023 06 Dec 2023 GLOFAS
4 2 deaths and 297 displaced 08 Dec 2023 10 Dec 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.