M 5.7 in Tonga on 09 Mar 2018 16:23 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: 5.7M
Depth: 538.67 Km
Lat/Lon: -21.0896 , -178.5464
Event Date: 09 Mar 2018 16:23 UTC
Exposed Population: About 900 people within 100km
Source: NEIC us1000d2bk
Inserted at: 09 Mar 2018 16:37 UTC
INFORM Coping capacity: 1.1 (Tonga)

Gdacs Score

For more info on GDACS alert score click here.

Episode Timeline

IDAlertScoreDateMag, DepthMax Intensity (MMI*)Pop [100 km or MMI 9-7]Tsunami risk (max height)Delay (hh:mm)Source
1202464 0 09 Mar 2018 16:23 5.7M, 538.67km N/A Few people affected 00:13 NEIC

Exposed population

The earthquake happened in Tonga , of Tonga (population 98,000) .

Radius Population
100 km <1000 people
75 km <1000 people
50 km <1000 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
Fiji Fiji 750000 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
Ono-I-Lau ONU unknown 0 51 km

More information

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