Overall Green alert Flood for Sri Lanka
in Sri Lanka

Flood impact summary

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

GDACS ID: 1101565
Deaths: 3
Displaced: 2374
Region: Nuwara Eliya District, Sri Lanka
Countries: Sri Lanka
From - To 01 Aug - 03 Aug
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 03-08-2022

SENDAI Indicator A N Country Location Info
death 3 Sri Lanka Nuwara Eliya District
SENDAI Indicator B N Country Location Info
affected 12289 Sri Lanka Sri Lanka
displaced 2374 Sri Lanka Sri Lanka

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2022-07-25 / 2022-08-10  

Monday 25/07Tuesday 26/07Wednesday 27/07Thursday 28/07Friday 29/07Saturday 30/07Sunday 31/07Monday 01/08Tuesday 02/08Wednesday 03/08Thursday 04/08Friday 05/08Saturday 06/08Sunday 07/08Monday 08/08Tuesday 09/08Wednesday 10/08

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 3 deaths and 2374 displaced 01 Aug 2022 03 Aug 2022 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.