Overall Green alert Flood for Nigeria
in Nigeria

Flood impact summary

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

GDACS ID: 1100963
Deaths: 0
Displaced: 4000
Region: Eti Osa, Lagos
Countries: Nigeria
From - To 09 Jul - 14 Jul
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 20-07-2021

SENDAI Indicator B N Country Location Info
displaced 4000 Nigeria Jalingo
SENDAI Indicator C N Country Location Info
houses 300 Nigeria Jalingo, Bali
houses destroyed 100 Nigeria Gashua
SENDAI Indicator D N Country Location Info
transport 10 Nigeria Eti Osa, Lagos

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2021-07-02 / 2021-07-21  

Friday 02/07Saturday 03/07Sunday 04/07Monday 05/07Tuesday 06/07Wednesday 07/07Thursday 08/07Friday 09/07Saturday 10/07Sunday 11/07Monday 12/07Tuesday 13/07Wednesday 14/07Thursday 15/07Friday 16/07Saturday 17/07Sunday 18/07Monday 19/07Tuesday 20/07Wednesday 21/07

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 and 4000 displaced 09 Jul 2021 18 Jul 2021 GLOFAS
2 0 deaths 15 Jul 2021 17 Jul 2021 GLOFAS
3 0 deaths 12 Jul 2021 14 Jul 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.