M 6.6 in Tonga on 26 May 2024 20:47 UTC

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: 6.6M
Depth: 112.2 Km
Lat/Lon: -19.3769 , -174.8692
Event Date: 26 May 2024 20:47 UTC
26 May 2024 08:47 Local
Exposed Population: 2 thousand in MMI VI
Source: NEIC us6000n158
Inserted at: 26 May 2024 21:05 UTC
INFORM Coping capacity of the alert score: 1.1 (Tonga)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)
Tsunami GDACS score
NEIC 0 0 0
us6000n158 Scaled population (raster) 0.3 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0m  
  C2 shakemap 0.53      
  Country Vulnerability 0      
  INFORM_normalised 0.94      
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
1573253 0 26 May 2024 20:47 6.6M, 157.1km N/A 10 thousand (in 100km) 0m (at 00:00) 00:08 PTWC
1573256 0 26 May 2024 20:47 6.6M, 163km N/A 6 thousand (in 100km) 0m (at 00:00) 00:13 NTWC
1573258 0 26 May 2024 20:47 6.6M, 112.2km 6.31 N/A (in MMI>=VII) 0m (at 00:00) 00:17 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) . The alertlevel for this event is GREEN

Intensity Population
16000 people
7400 people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1573258 -174.869/-19.377 6.6 112.2 6.25 26 May 2024 21:09 00:22 (new episode)
2 0 1573258 -174.869/-19.377 6.6 112.2 6.224 26 May 2024 22:52 02:05 (upd of #1)
3 0 1573258 -174.869/-19.377 6.6 112.2 6.219 27 May 2024 21:40 1d 00:53 (upd of #2)

Affected Provinces

Intensity Region Province Country Population
Tonga Tonga 8700 people
Tonga Tonga 2000 people
Tonga Tonga 19000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Pangai Tonga Village 1700 people 73 km
Neiafu Tonga Village 4300 people 123 km
Kolonga Tonga Village - 196 km
Nuku'alofa Tonga Capital 24000 people 198 km
Pea Tonga Village - 202 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
Haapai HPA 12 Civ. Unpaved Yes 3900 71 km
Vavau International VAV 72 Civ. Unpaved Yes 5500 130 km

Ports

Intensity Name LOCODE Country Distance
Pangai TOPAN Tonga 71 km
Neiafu TONEI Tonga 124 km
Nuku'alofa TOTBU Tonga 198 km

More information

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