Overall Green alert Flood for Thailand
in Thailand

Flood impact summary

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

GDACS ID: 1100690
Deaths: 24
Displaced: 421
Region: Betong, Yala Province, Pattani Province, Narathiwat Province
Countries: Thailand
From - To 20 Nov - 21 Dec
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 16-12-2020

SENDAI Indicator A N Country Location Info
death 1 Thailand Trang Province
death 2 Thailand Surat Thani Province
death 1 Thailand Songkhla Province
death 19 Thailand Nakhon Si Thammarat Province
death 1 Thailand Betong
SENDAI Indicator B N Country Location Info
affected 1500 Thailand Yala Province
affected 280000 Thailand Songkhla Province
affected 240000 Thailand Phatthalung
affected 10000 Thailand Trang
affected 350 Thailand Krabi
affected 80000 Thailand Surat Thani Province
affected 900000 Thailand Nakhon Si Thammarat Province
affected 3500 Thailand Yala Province
affected 10000 Thailand Pattani Province
affected 110000 Thailand Narathiwat Province
displaced 421 Thailand Narathiwat Province

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2020-11-13 / 2020-12-28  

Friday 13/11Saturday 14/11Sunday 15/11Monday 16/11Tuesday 17/11Wednesday 18/11Thursday 19/11Friday 20/11Saturday 21/11Sunday 22/11Monday 23/11Tuesday 24/11Wednesday 25/11Thursday 26/11Friday 27/11Saturday 28/11Sunday 29/11Monday 30/11Tuesday 01/12Wednesday 02/12Thursday 03/12Friday 04/12Saturday 05/12Sunday 06/12Monday 07/12Tuesday 08/12Wednesday 09/12Thursday 10/12Friday 11/12Saturday 12/12Sunday 13/12Monday 14/12Tuesday 15/12Wednesday 16/12Thursday 17/12Friday 18/12Saturday 19/12Sunday 20/12Monday 21/12Tuesday 22/12Wednesday 23/12Thursday 24/12Friday 25/12Saturday 26/12Sunday 27/12Monday 28/12

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 23 deaths 20 Nov 2020 10 Dec 2020 GLOFAS
2 1 deaths and 421 displaced 16 Dec 2020 21 Dec 2020 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.