M 6.4 in Tonga Islands on 24 Sep 2016 21:07 UTC

Hazard models

EQ parameters
Shakemap
Tsunami

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: 6.4M
Depth: 183.37 Km
Lat/Lon: -18.1267 , -175.039
Event Date: 24 Sep 2016 21:07 UTC
24 Sep 2016 09:07 Local
Exposed Population: Few people within 100km
Source: NEIC us10006scl
Inserted at: 24 Sep 2016 21:54 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC n.a. n.a
us10006scl Scaled population (vector) 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.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1141086 n.a 24 Sep 2016 21:07 6.3M, 179.01km 3.72 Few people (in 100km) 00:19 NEIC
1141092 n.a 24 Sep 2016 21:07 6.4M, 183.37km 3.85 Few people (in 100km) 00:46 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 12,735) . The alertlevel for this event is Green

Intensity Population


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1141086 -18.094/-175.004 6.3 179.01 3.72 24 Sep 2016 21:31 00:24 (new episode)
2 0 1141092 -18.127/-175.039 6.4 183.37 3.85 24 Sep 2016 21:55 00:48 (new episode)

Affected Provinces

Intensity Region Province Country Population
Tonga Tonga 13000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Neiafu Tonga Village 4300 people 126 km

see full list


Critical infrastructure

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

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Vavau International VAV 72 Civ. Unpaved Yes 5500 125 km

Ports

Intensity Name LOCODE Country Distance
Neiafu TONEI Tonga 126 km

More information

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