Overall Red alert Flood
in China

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: 1100113
Deaths: 77
Displaced: 1308000
Region: Sichuan, Wenchuan
Countries: China
From - To 31 Jul - 20 Aug
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 20-08-2019

SENDAI Indicator A N Country Location Info
death 12 Vietnam Kiên Giang, Provincia di Cà Mau, Provincia di Soc Trang, Vietnam
death 56 China Shandong, Zhejiang, Zhejiang and Shandong
death 9 China Wenchuan
missing 35 China Wenchuan
missing 9 China, Vietnam Vietnam
SENDAI Indicator B N Country Location Info
affected 5000000 China Shandong, Zhejiang
displaced 88000 China Shandong, Shandong Province
displaced 1220000 China Zhejiang, Zhejiang Province
SENDAI Indicator C N Country Location Info
houses 6470 Vietnam Vietnam
houses damaged 36000 China Zhejiang, Zhejiang Province

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 12 deaths 31 Jul 2019 06 Aug 2019 FloodList
2 56 deaths and 1308000 displaced 09 Aug 2019 14 Aug 2019 FloodList
3 9 deaths 20 Aug 2019 20 Aug 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.