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: 1101777
Deaths: 2
Displaced: 18809
Region: Serang Regency
Countries: Indonesia
From - To 08 Dec - 09 Jan
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 09-01-2023

SENDAI Indicator A N Country Location Info
death 1 Indonesia East Nusa Tenggara
death 1 Indonesia -
SENDAI Indicator B N Country Location Info
affected 44790 Indonesia North Sumatra
affected 1117 Indonesia -
affected 3195 Indonesia Kepulauan Meranti Regency
affected 5756 Indonesia Tebing Tinggi
affected 11110 Indonesia -
affected 20182 Indonesia -
affected 5925 Indonesia -
affected 68000 Indonesia Central Java
affected 1882 Indonesia -
affected 168 Indonesia -
affected 147 Indonesia -
affected 1500 Indonesia Serang Regency
affected 1260 Indonesia -
displaced 5000 Indonesia Central Java
displaced 1193 Indonesia East Nusa Tenggara
displaced 2694 Indonesia East Nusa Tenggara
displaced 2405 Indonesia -
displaced 7482 Indonesia -
displaced 35 Indonesia -
SENDAI Indicator C N Country Location Info
houses 8958 Indonesia North Sumatra
houses 639 Indonesia Kepulauan Meranti Regency
houses 220 Indonesia -
houses 30 Indonesia -
houses 215 Indonesia Serang Regency
houses damaged 317 Indonesia East Nusa Tenggara
houses destroyed 30 Indonesia East Nusa Tenggara

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 0 deaths 08 Dec 2022 12 Dec 2022 FloodList
2 0 deaths 14 Dec 2022 16 Dec 2022 FloodList
3 0 deaths and 9922 displaced 18 Dec 2022 20 Dec 2022 FloodList
4 0 deaths and 5000 displaced 26 Dec 2022 28 Dec 2022 FloodList
5 1 deaths and 3887 displaced 25 Dec 2022 04 Jan 2023 FloodList
6 2 deaths 03 Jan 2023 09 Jan 2023 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.