Overall Green alert Flood for South Africa
in South Africa

Flood impact summary

Flood South Africa is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID: 1100350
Deaths: 3
Displaced: -
Region: Gauteng, Alexandra, Soweto, Johannesburg, Johannesburg and surrounding areas
Countries: South Africa
From - To 02 Feb - 09 Feb
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 07-02-2020

SENDAI Indicator A N Country Location Info
death 3 South Africa Gauteng
SENDAI Indicator C N Country Location Info
houses damaged 30 South Africa Alice
houses damaged 200 South Africa Alexandra, Soweto
SENDAI Indicator D N Country Location Info
roads - South Africa Johannesburg, Johannesburg and surrounding areas

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2020-01-26 / 2020-02-16  

Sunday 26/01Monday 27/01Tuesday 28/01Wednesday 29/01Thursday 30/01Friday 31/01Saturday 01/02Sunday 02/02Monday 03/02Tuesday 04/02Wednesday 05/02Thursday 06/02Friday 07/02Saturday 08/02Sunday 09/02Monday 10/02Tuesday 11/02Wednesday 12/02Thursday 13/02Friday 14/02Saturday 15/02Sunday 16/02

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 0 deaths 02 Feb 2020 04 Feb 2020 GLOFAS
2 3 deaths 07 Feb 2020 09 Feb 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.