M 4.7 in Papua New Guinea on 31 Jul 2020 16:17 UTC
EQ parameters

Event summary

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

Earthquake Magnitude: 4.7M
Depth: 10 Km
Lat/Lon: -8.794 , 152.9219
Event Date: 31 Jul 2020 16:17 UTC
01 Aug 2020 02:17 Local
Exposed Population:
About 9000 people within 100km
Source: NEIC us6000b7hq
Inserted at: 31 Jul 2020 16:30 UTC
INFORM Coping capacity of the alert score
7.6 (Papua New Guinea)


For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us6000b7hq Scaled population (vector) 4.07  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 1.3  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1324238 0 31 Jul 2020 16:17 4.7M, 10km N/A 10 thousand (in 100km) 00:13 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in Papua New Guinea , Province of Milne Bay (population 160,000) . The nearest places are Kaurai, Kulumadau, Guasapa, Bonagai, Wabunuma, Madau I, Digdagela, and Boagis.

Radius Population
100 km 9700 people
75 km 9600 people
50 km 4700 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Milne Bay Papua New Guinea 160000 people

Affected populated places

Name Region Province Country City class Population Distance
Kaurai Milne Bay Papua New Guinea Village - 30 km
Kulumadau Milne Bay Papua New Guinea Village - 40 km
Guasapa Milne Bay Papua New Guinea Village - 41 km
Bonagai Milne Bay Papua New Guinea Village - 43 km
Wabunuma Milne Bay Papua New Guinea Village - 51 km
Madau I Milne Bay Papua New Guinea Village - 54 km
Digdagela Milne Bay Papua New Guinea Village - 61 km
Boagis Milne Bay Papua New Guinea Village - 63 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.


Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Guasopa GAZ -1 0 49 km


Name LOCODE Country Distance
Suloga Harbor Papua New Guinea 49 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.