Overall Green alert Flood
in Cambodia, Laos, Thailand, Vietnam

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: 1100181
Deaths: 78
Displaced: 72935
Region: Ha Tinh Province, Preah Vihear, Quang Binh province, Quang Tri province, Son La province, Tbong Khmum, Thailand, Cambodia, Laos, Vietnam
Countries: Cambodia, Laos, Thailand, Vietnam
From - To 29 Aug - 04 Sep
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 02-09-2019

SENDAI Indicator A N Country Location Info
death 3 Vietnam Vietnam
death 3 Thailand Phitsanulok Province, Phichit Province, Ubon Ratchathani Province, Thailand
death 1 Cambodia Cambodja, Cambodia
death 2 Laos Laos
death 5 Vietnam Ha Thin, Vietnam
death 33 Thailand Thailand
death 12 Cambodia Cambodia
death 14 Laos Laos
death 5 Vietnam Vietnam
missing 3 Vietnam Lào Cai
missing 2 Laos Laos
SENDAI Indicator B N Country Location Info
affected 180000 Cambodia, Laos, Thailand, Vietnam Thailand
displaced 700 Vietnam Tuyên Hóa District
displaced 3000 Cambodia Stung Treng, Stung Treng province
displaced 15000 Laos Laos
displaced 24235 Thailand Thailand
displaced 30000 Cambodia Cambodia
SENDAI Indicator D N Country Location Info
education 102000 Cambodia, Laos, Thailand, Vietnam Laos

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 6 deaths 29 Aug 2019 04 Sep 2019 FloodList
2 8 deaths and 18700 displaced 02 Sep 2019 02 Sep 2019 FloodList
3 64 deaths and 54235 displaced 02 Sep 2019 02 Sep 2019 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.