M 5.5 in New Caledonia on 25 May 2023 10:39 UTC

Hazard models

Rapid Impact
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: 5.5M
Depth: 10 Km
Lat/Lon: -23.2286 , 170.7972
Event Date: 25 May 2023 10:39 UTC
25 May 2023 21:39 Local
Exposed Population: Few people affected in MMI -
Source: NEIC us7000k3ps
Inserted at: 25 May 2023 10:58 UTC
INFORM Coping capacity of the alert score: 1.1 (New Caledonia)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us7000k3ps 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
1507570 0 25 May 2023 10:39 5.5M, 10km N/A N/A (in MMI>=VII) 00:18 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 unknowed a zone. The alertlevel for this event is GREEN

Intensity Population
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1507570 170.797/-23.229 5.5 10 0 25 May 2023 11:00 00:20 (new episode)
2 0 1507570 170.797/-23.229 5.5 10 0 25 May 2023 12:43 02:04 (upd of #1)
3 0 1507570 170.797/-23.229 5.5 10 0 26 May 2023 11:40 1d 01:01 (upd of #2)

Affected Provinces



Critical infrastructure

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

Ports

Intensity Name LOCODE Country Distance
Matthew Island New Caledonia 113 km
Matthew Island New Caledonia 113 km

More information

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