Overall Orange alert Flood
in China, Philippines, Taiwan

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: 1101085
Deaths: 17
Displaced: 378455
Region: Region II, Hualien, Shanghai
Countries: China, Philippines, Taiwan
From - To 06 Sep - 13 Sep
Known identifiers for this event: FL-2021-000083-CHN

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 14-09-2021

SENDAI Indicator A N Country Location Info
death 17 Philippines Philippines
SENDAI Indicator B N Country Location Info
displaced 10976 China, Philippines, Taiwan -
displaced 29830 Philippines Philippines
displaced 5049 Philippines Region II
displaced 2600 Taiwan Hualien
displaced 330000 China Shanghai
SENDAI Indicator C N Country Location Info
houses 432 Philippines Philippines

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 17 deaths and 40806 displaced 06 Sep 2021 13 Sep 2021 FloodList
2 0 deaths and 337649 displaced 11 Sep 2021 13 Sep 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.