M 5.6 in Tonga on 03 Jun 2018 00:48 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: -19.4045 , -173.6821
Event Date: 03 Jun 2018 00:48 UTC
Exposed Population: About 20000 people within 100km
Source: NEIC us1000ehmb
Inserted at: 03 Jun 2018 01:10 UTC
INFORM Coping capacity of the alert score: 4.6 (Tonga)


For more info on GDACS alert score click here.
GDACS score
NEIC 0 0
us1000ehmb Scaled population 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 0.94  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1212911 0 03 Jun 2018 00:48 5.6M, 10km 3.85 20 thousand 00:21 NEIC
* 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 Tonga , of Tonga (population 98,000) .

Radius Population
100 km 20000 people
75 km <1000 people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Tonga Tonga 98000 people
Niue Niue 2000 people

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
Haapai HPA 12 Civ. Unpaved Yes 3900 81 km
Vavau International VAV 72 Civ. Unpaved Yes 5500 95 km


Name LOCODE Country Distance
Pangai TOPAN Tonga 83 km
Neiafu TONEI Tonga 89 km

More information

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