Overall Orange alert Flood
in Indonesia

Flood impact summary

This flood is expected to have a medium humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID: 1100810
Deaths: 420
Displaced: 25905
Region: East Timor, Dili, Lembata, Kupang, East Nusa Tenggara
Countries: Indonesia
From - To 03 Apr - 10 Apr
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 07-04-2021

SENDAI Indicator A N Country Location Info
death 34 East Timor East Timor
death 3 Indonesia -
death 6 Indonesia Kupang
death 6 Indonesia -
death 28 Indonesia -
death 46 East Timor East Timor
death 46 Indonesia -
death 71 Indonesia -
death 42 East Timor East Timor
death 138 Indonesia East Nusa Tenggara
missing 61 Indonesia East Nusa Tenggara
SENDAI Indicator B N Country Location Info
affected 100000 East Timor East Timor
affected 4384 East Timor East Timor
affected 22 Indonesia -
affected 5 Indonesia -
affected 13 Indonesia -
displaced 9779 East Timor East Timor
displaced 284 Indonesia -
displaced 7000 East Timor Dili
displaced 958 Indonesia Lembata
displaced 672 Indonesia -
displaced 7212 Indonesia -
SENDAI Indicator C N Country Location Info
houses damaged 1114 Indonesia East Nusa Tenggara

Satellite Observation

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Timeline of revisions

For accessing reports of previous advisories, please click on the advisory number in the table below.

IDAlert ColorPopulation affectedStart DateEnd DateSource
1 420 deaths and 25905 displaced 03 Apr 2021 10 Apr 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.