M 5.6 in Indonesia on 23 Apr 2018 08:13 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: 5.6M
Depth: 10 Km
Lat/Lon: -1.2887 , 138.4283
Event Date: 23 Apr 2018 08:13 UTC
Exposed Population: About 60000 people within 100km
Source: NEIC us1000dqk1
Inserted at: 23 Apr 2018 08:35 UTC
INFORM Coping capacity of the alert score: 4.8 (Indonesia)


For more info on GDACS alert score click here.
GDACS score
NEIC 0 0
us1000dqk1 Scaled population -8  
  C1 shakemap -1.73  
  C2 shakemap 0.79  
  Country Vulnerability 0  
  INFORM_normalised 0.96  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1207755 0 23 Apr 2018 08:13 5.6M, 10km 4.27 60 thousand 00:21 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
* 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 Indonesia , Province of Irian Jaya (population 1,752,571) . The nearest places are Isjuma, Apaoewar, Soebokontrai, Jobi, Teba, Nioegi, Atinowaniwa, Yobi, Awawah, and Jauke.

Radius Population
100 km 60000 people
75 km 24000 people
50 km 1500 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Irian Jaya Indonesia 1.7 million people
West Sepik Papua New Guinea 140000 people
East Sepik Papua New Guinea 280000 people
Western Papua New Guinea 100000 people

Affected populated places

Name Region Province Country City class Population Distance
Isjuma Papua Indonesia Village6 - 47 km
Apaoewar Papua Indonesia Village5 - 48 km
Soebokontrai Papua Indonesia Village5 - 55 km
Jobi Papua Indonesia Village6 - 62 km
Teba Papua Indonesia Village5 - 63 km
Nioegi Papua Indonesia Village5 - 64 km
Atinowaniwa Papua Indonesia Village5 - 66 km
Yobi Papua Indonesia Village5 - 67 km
Awawah Papua Indonesia Village5 - 67 km
Jauke Papua Indonesia Village6 - 68 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
Sarmi ZRM unknown 0 76 km


Name LOCODE Country Distance
Mataboor Indonesia 57 km

More information

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