M 5.5 in Papua New Guinea on 23 Jul 2021 06:16 UTC

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: 5.5M
Depth: 54.85 Km
Lat/Lon: -4.6863 , 153.0131
Event Date: 23 Jul 2021 06:16 UTC
23 Jul 2021 16:16 Local
Exposed Population: About 49000 people in MMI>=IV
120000 people within 100km
Source: NEIC us6000ey7r
Inserted at: 24 Jul 2021 04:53 UTC
INFORM Coping capacity of the alert score: 7.6 (Papua New Guinea)


For more info on GDACS alert score click here.
GDACS score
NEIC 0 0
us6000ey7r Scaled population (vector) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 1.3  
Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1387078 0 23 Jul 2021 06:16 5.2M, 59.86km N/A 110 thousand (in 100km) 00:22 NEIC
1387245 0 23 Jul 2021 06:16 5.5M, 54.85km 4.18 less than 100 (in MMI>=VII) 22:37 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 ,of New Ireland (population 90,000) . The alertlevel for this event is GREEN

Intensity Population

Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1387245 -4.686/153.013 5.5 54.9 4.185 24 Jul 2021 04:55 22:39 (new episode)
2 0 1387245 -4.686/153.013 5.5 54.9 4.185 24 Jul 2021 06:19 1d 00:03 (upd of #1)

Affected Provinces

Intensity Region Province Country Population
New Ireland Papua New Guinea 1100 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Natar New Ireland Papua New Guinea Village - 1 km
Matkumlagir New Ireland Papua New Guinea Village - 3 km
Beriota New Ireland Papua New Guinea Village - 6 km
Maliom New Ireland Papua New Guinea Village - 9 km
Bakop New Ireland Papua New Guinea Village - 11 km
Ulam New Ireland Papua New Guinea Village - 13 km
Matatai New Ireland Papua New Guinea Village - 16 km

see full list

Critical infrastructure

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

More information

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