M 5.6 in Tonga on 06 Nov 2018 16:11 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: -22.1804 , -174.4942
Event Date: 06 Nov 2018 16:11 UTC
06 Nov 2018 04:11 Local
Exposed Population: Few people within 100km in MMI>=IV
About 700 people within 100km
Source: NEIC us2000i7iz
Inserted at: 06 Nov 2018 17:36 UTC
INFORM Coping capacity of the alert score: 1.1 (Tonga)


For more info on GDACS alert score click here.
GDACS score
NEIC 0 0
us2000i7iz Scaled population (vector) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1235614 0 06 Nov 2018 16:11 5.8M, 10km 3.44 Few people 00:25 NEIC
1235629 0 06 Nov 2018 16:11 5.5M, 10km 3.3 Few people 00:32 NEIC
1235640 0 06 Nov 2018 16:11 5.6M, 10km 3.25 Few people 01:24 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 Tonga , of Tonga (population 98,000) .

Radius Population
100 km <1000 people
75 km no 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

Critical infrastructure

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


Name LOCODE Country Distance
Eua Island Tonga 100 km

More information

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