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Green Earthquake alert in Tonga on 28/04/2012 10:08 UTC
Summary
Earthquake impact
Media analysis
Data Resources
GDACS Event Report - Earthquake impact

Summary

Population map close up
Population map close up. (Source: JRC)
 Interactive map: Open

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Updated: this report is based on episode 1.

  • Earthquake Magnitude 6.7M, Depth:117.8km
  • on 28/04/2012 10:08 UTC
  • About 18000 people within 100km

Earthquake event

  • Magnitude: 6.7 M
  • Depth: 117.8 km (very deep)
  • Source: NEIC NEIC usc0009e33
  • Location (latitude/longitude): -18.676, -174.45
  • Time (UTC): 28/04/2012 10:08:06
  • Time (ECT): 28/04/2012 12:08:06

Earthquake impact details

The earthquake happened in Tonga , of Tonga (population 98,000) . The maximum altitude nearby is 468m .

Population

Population near epicenter
Radius Population
100 km 17000 people
75 km 17000 people
50 km 12000 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected provinces

Country Region/Province Population
Tonga Tonga 98000 people

Affected cities

Critical infrastructure

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

Nearby and affected airports
Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Vavau International VAV 72 Civ. Unpaved Yes 5500 53 km
Major ports
Name LOCODE Country Distance
Neiafu TONEI Tonga 50 km
Not calculated

Event time line

For accessing reports of previous advisories, please click on the advisory number in the table below.

IDAlert colorDateMagnitude and depthPopulation within 100 kmTsunami risk (max height)Delay Source
1165514/28/2012 10:08:06 AM 6.7M, 117.8km 20 thousand 00:08 NEICNEIC
1165524/28/2012 10:08:07 AM 6.4M, 129.4km 20 thousand 00:18 NEICNEIC
1165534/28/2012 10:08:07 AM 6.7M, 129.4km 20 thousand 01:36 NEICNEIC

More information

Data resources

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

About the data

Disclaimer

While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information. The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.