Overall Green alert Flood for Thailand, Vietnam
in Thailand, Vietnam

Flood impact summary

Flood Thailand, Vietnam is expected to have a medium humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID: 1101113
Deaths: 6
Displaced: -
Region: Lop Buri Province, Lopburi, Phetchabun, Nghe An, Nghe An province
Countries: Thailand, Vietnam
From - To 23 Sep - 25 Sep
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 30-09-2021

SENDAI Indicator A N Country Location Info
death 5 Thailand Lopburi
death 1 Thailand Phetchabun
SENDAI Indicator B N Country Location Info
affected 355465 Thailand Lop Buri Province
affected 14225 Vietnam Nghe An province
SENDAI Indicator C N Country Location Info
houses 2725 Vietnam Nghe An

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2021-09-16 / 2021-10-02  

Thursday 16/09Friday 17/09Saturday 18/09Sunday 19/09Monday 20/09Tuesday 21/09Wednesday 22/09Thursday 23/09Friday 24/09Saturday 25/09Sunday 26/09Monday 27/09Tuesday 28/09Wednesday 29/09Thursday 30/09Friday 01/10Saturday 02/10

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 6 deaths 23 Sep 2021 25 Sep 2021 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.