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: 1101178
Deaths: 11
Displaced: 6535
Region: Balusu
Countries: Indonesia
From - To 18 Nov - 17 Dec
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 06-12-2021

SENDAI Indicator A N Country Location Info
death 5 Indonesia West Lombok Regency
death 1 Indonesia -
death 1 Indonesia Balusu
SENDAI Indicator B N Country Location Info
affected 470 Indonesia East Lombok Regency
affected 39075 Indonesia Bima
affected 294 Indonesia Sumbawa
affected 704 Indonesia -
affected 18430 Indonesia Tebing Tinggi City
affected 1440 Indonesia -
affected 5952 Indonesia -
affected 2873 Indonesia Pulau Punjung
affected 100 Indonesia Balusu
affected 5 Indonesia Balusu
affected 11515 Indonesia South Kalimantan
affected 26220 Indonesia West Lombok Regency
displaced 6535 Indonesia West Lombok Regency
SENDAI Indicator C N Country Location Info
houses 300 Indonesia -
houses 230 Indonesia -
houses damaged 800 Indonesia Pulau Punjung
houses damaged 448 Indonesia West Lombok Regency
houses damaged 94 Indonesia East Lombok Regency
houses damaged 7815 Indonesia Bima
houses destroyed 2 Indonesia Balusu
houses destroyed 2 Indonesia -

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 1 deaths 01 Dec 2021 04 Dec 2021 FloodList
2 1 deaths 18 Nov 2021 20 Nov 2021 FloodList
3 0 deaths 26 Nov 2021 02 Dec 2021 FloodList
4 5 deaths and 6535 displaced 05 Dec 2021 07 Dec 2021 FloodList
5 0 deaths 13 Dec 2021 17 Dec 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.