Overall Green alert Flood
in Indonesia

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: 1101824
Deaths: 4
Displaced: 1021
Region: Manado City
Countries: Indonesia
From - To 27 Jan - 29 Jan
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 29-01-2023

SENDAI Indicator A N Country Location Info
death 4 Indonesia Manado City
SENDAI Indicator B N Country Location Info
affected 9471 Indonesia Manado City
displaced 1021 Indonesia Manado City
SENDAI Indicator C N Country Location Info
houses 400 Indonesia Manado City
SENDAI Indicator D N Country Location Info
bridges 1 Indonesia -

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2023-01-14 / 2023-02-13  

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 3 deaths and 10053 displaced 21 Jan 2023 23 Jan 2023 GLOFAS
2 4 deaths and 1021 displaced 27 Jan 2023 29 Jan 2023 GLOFAS
3 0 deaths 26 Jan 2023 31 Jan 2023 GLOFAS
4 2 deaths 01 Feb 2023 03 Feb 2023 GLOFAS
5 3 deaths 04 Feb 2023 06 Feb 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.