Overall Green alert Flood
in Papua New Guinea

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: 1102022
Deaths: 0
Displaced: 1250
Region: Wapenamanda, West New Britain Province, South Fly District
Countries: Papua New Guinea
From - To 05 May - 07 May
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 23-05-2023

SENDAI Indicator B N Country Location Info
affected 1500 Papua New Guinea Wapenamanda
affected 2000 Papua New Guinea South Fly District
displaced 1250 Papua New Guinea West New Britain Province

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2023-04-28 / 2023-05-14  

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

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 1250 displaced 05 May 2023 07 May 2023 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.