M 5.6 in Tonga on 26 Dec 2018 14:11 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: 5.6M
Depth: 83.15 Km
Lat/Lon: -17.2871 , -174.091
Event Date: 26 Dec 2018 14:11 UTC
26 Dec 2018 02:11 Local
Exposed Population: Few people within 100km
Source: NEIC us2000ixpr
Inserted at: 26 Dec 2018 14:33 UTC
INFORM Coping capacity of the alert score: 1.1 (Tonga)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us2000ixpr 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.

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
1242658 0 26 Dec 2018 14:11 6M, 162.8km N/A No people affected (in 100km) 00:08 PTWC
1242663 0 26 Dec 2018 14:11 5.6M, 83.15km 3.36 N/A (in MMI>=VII) 00:22 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 13,748) . The alertlevel for this event is GREEN

Intensity Population
no people
110000 people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1242663 -17.287/-174.091 5.6 83.15 3.36 26 Dec 2018 14:35 00:23 (new episode)
2 0 1242663 -17.287/-174.091 5.6 83.15 3.36 26 Dec 2018 16:13 02:02 (upd of #1)

Affected Provinces

Intensity Region Province Country Population
Tonga Tonga 14000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Hihifo Tonga Village <1000 people 150 km
Neiafu Tonga Village 4300 people 151 km
Falehau Tonga Village - 153 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 144 km

Ports

Intensity Name LOCODE Country Distance
Neiafu TONEI Tonga 151 km

More information

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