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Green Earthquake alert in Indonesia on 21 Apr 2012 01:16 UTC
GDACS Event Report - Earthquake impact


Population map close up
Population map close up. (Source: JRC)
Interactive map: Open

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

Updated: this report is based on episode 1.

  • Earthquake Magnitude 6.6M, Depth:16km
  • on 21 Apr 2012 01:16 UTC
  • 160000 people within 100km
  • inserted at 21 Apr 2012 04:40:43


No content available ..

Earthquake event

  • Magnitude: 6.6 M
  • Depth: 16 km (shallow)
  • Area affected by light damage (estimated radius): 68 km (MMI VI)
  • Source: NEIC usc00098nl
  • Location (latitude/longitude): -1.6032, 134.274
  • Time (UTC): 21 Apr 2012 01:16:52
  • Time (ECT): 21 Apr 2012 03:16:52

Earthquake impact details

The earthquake happened in Indonesia , Province of Irian Jaya (population 1,752,571) .


Population near epicenter
Radius Population
100 km 150000 people
75 km 29000 people
50 km 16000 people
20 km 5200 people
10 km <1000 people
5 km no people
2 km no people

Affected provinces

Country Region Province Population
Indonesia Irian Jaya 1.7 million people

Affected Populated Places

See complete report

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
Ransiki RSK unknown 11 km
Anggi AGD unknown 50 km
Name LOCODE Country Distance
Manokwari IDMKW Indonesia 82 km
Kampung Muturi Indonesia 94 km
Modan Indonesia 98 km

Event time line

For accessing reports of previous advisories, please click on the advisory number in the table below.

event calculation detail

Event calculation detail

Reference Id Level Score Type Date Added Population
100km                      20km
Max Height(m)
IDAlert Color Date (UTC)Mag. and depthMax Intensity (mmi*)Pop. within 100 kmTsunami risk (max height)Delay (hh:mm) Source
116343 21 Apr 2012 01:16 6.9M, 33km N/A 40 thousand 0.1m (at 01:46) 00:11 NEIC NEIC
116344 21 Apr 2012 01:16 6.6M, 29.8km N/A 160 thousand 0m (at 02:45) 00:18 NEIC NEIC
116355 21 Apr 2012 01:16 6.6M, 16km N/A 160 thousand 0.1m (at 01:26) 03:23 NEIC NEIC

(*) Modified Mercalli Intensity Scale

More information

Data resources

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

About the data


While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information. The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.