Overall Orange alert Flood for China
in China

Flood impact summary

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

GDACS ID: 1101109
Deaths: 8
Displaced: 179300
Region: Shanxi, Lüliang City, Hanzhong City, Linfen City
Countries: China
From - To 24 Sep - 08 Oct
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 11-10-2021

SENDAI Indicator A N Country Location Info
death 1 China Lüliang City
death 4 China Linfen City
death 2 China Tianquan County
death 1 China Nanzhao
missing 2 China Jiyuan
missing 12 China Tianquan County
SENDAI Indicator B N Country Location Info
affected 1760000 China Shanxi
displaced 50000 China Hanzhong City
displaced 1300 China Lüliang City
displaced 120000 China Shanxi
displaced 8000 China Henan
SENDAI Indicator C N Country Location Info
houses 17000 China Shanxi

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2021-09-17 / 2021-10-15  

Friday 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 02/10Sunday 03/10Monday 04/10Tuesday 05/10Wednesday 06/10Thursday 07/10Friday 08/10Saturday 09/10Sunday 10/10Monday 11/10Tuesday 12/10Wednesday 13/10Thursday 14/10Friday 15/10

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 2 deaths 26 Sep 2021 27 Sep 2021 GLOFAS
2 1 deaths and 8000 displaced 24 Sep 2021 26 Sep 2021 GLOFAS
3 5 deaths and 171300 displaced 02 Oct 2021 08 Oct 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.