Overall Green alert Flood
in Philippines

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: 1100904
Deaths: 1
Displaced: 1004
Region: Davao City, Norala, Davao del Sur, Banga, Matalom, Maasin City
Countries: Philippines
From - To 30 May - 01 Jun
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 02-06-2021

SENDAI Indicator A N Country Location Info
death 1 Philippines Norala
missing 2 Philippines Norala
SENDAI Indicator B N Country Location Info
affected 1 Philippines Norala
affected 500 Philippines Banga
affected 2030 Philippines Banga
displaced 100 Philippines Matalom
displaced 100 Philippines Maasin City
displaced 200 Philippines Davao City
displaced 604 Philippines Davao del Sur

Satellite Observation


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 and 1608 displaced 30 May 2021 01 Jun 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.