M 6.4 Off-shore on 27 Mar 2024 01:28 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: 6.4M
Depth: 10 Km
Lat/Lon: -21.0295 , 173.7692
Event Date: 27 Mar 2024 01:28 UTC
27 Mar 2024 13:28 Local
Exposed Population:
Source: NEIC us7000m86i
Inserted at: 27 Mar 2024 01:46 UTC
INFORM Coping capacity of the alert score: 1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)
Tsunami GDACS score
NEIC 0 0 0
us7000m86i Scaled population (raster) 0 Max wave alert 0m  
  C1 shakemap 0 Max wave realtime 0m  
  C2 shakemap 0      
  Country Vulnerability 0      
  INFORM_normalised 0      
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
1561313 0 27 Mar 2024 01:28 6.7M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:11 PTWC
1561314 0 27 Mar 2024 01:28 6.7M, 10km 7.08 No people affected (in 100km) 0m (at 00:00) 00:12 NTWC
1561315 0 27 Mar 2024 01:28 6.4M, 10km 8.12 N/A (in MMI>=VII) 0m (at 00:00) 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 1561315 173.769/-21.03 6.4 10 3.903 27 Mar 2024 01:50 00:22 (new episode)
2 0 1561315 173.769/-21.03 6.4 10 3.903 27 Mar 2024 03:31 02:03 (upd of #1)
3 0 1561315 173.75/-21.069 6.4 10 3.912 27 Mar 2024 23:40 22:12 (upd of #2)
4 0 1561315 173.75/-21.069 6.4 10 3.912 28 Mar 2024 01:40 1d 00:12 (upd of #3)

Affected Provinces



Critical infrastructure

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

More information

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