M 5.9 in Tonga on 15 Feb 2016 15:02 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: 5.9M
Depth: 10 Km
Lat/Lon: -20.9773 , -175.4802
Event Date: 15 Feb 2016 15:02 UTC
Exposed Population: About 82000 people within 100km
Source: NEIC
Inserted at: 15 Feb 2016 16:48 UTC


For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.1 0.1
Scaled population n.a  
  C1 earthquake n.a  
  C2 earthquake n.a  
  Country Vulnerability n.a  
  INFORM_normalised n.a  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1119544 0.1 15 Feb 2016 15:02 5.7M, 10km 5.37 80 thousand 00:27 NEIC
1119549 0.1 15 Feb 2016 15:02 5.9M, 10km 5.87 80 thousand 01:45 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) . The nearest places are Nuku'alofa, Fatumu, Pea, Kolonga, Fuaamotu, Foui, Ohonua, Niutoua, Mua, Nukunuku, and Houma.

Radius Population
100 km 82000 people
75 km 82000 people
50 km 77000 people
20 km 1000 people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Tonga Tonga 98000 people

Affected populated places

Name Region Province Country City class Population Distance
Foui Tonga Village5 - 21 km
Nukunuku Tonga Village5 - 26 km
Houma Tonga Village5 - 28 km
Nuku'alofa Tonga Capital 24000 people 33 km
Pea Tonga Village5 - 33 km
Mua Tonga Village5 - 44 km
Kolonga Tonga Village5 - 45 km
Fatumu Tonga Village5 - 46 km
Fuaamotu Tonga Village5 - 47 km
Niutoua Tonga Village5 - 49 km
Ohonua Tonga Village5 1200 people 69 km

see full list

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
Fua'amotu International TBU 38 Civ. Paved Yes 8700 46 km
Eua Kaufana EUA unknown 70 km


Name LOCODE Country Distance
Nuku'alofa TOTBU Tonga 33 km
Eua Island Tonga 73 km

More information

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