M 5.8 in Samoa on 15 May 2020 14:49 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: 5.8M
Depth: 15.88 Km
Lat/Lon: -15.6128 , -172.9734
Event Date: 15 May 2020 14:49 UTC
15 May 2020 02:49 Local
Exposed Population: About 800 people within 100km
Source: NEIC us70009gsj
Inserted at: 15 May 2020 15:11 UTC
INFORM Coping capacity of the alert score: 1.1 (Samoa)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us70009gsj Scaled population (raster) 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
1310528 0 15 May 2020 14:49 6.2M, 41.5km N/A Few people (in 100km) 0m (at 00:00) 00:12 PTWC
1310529 0 15 May 2020 14:49 5.8M, 15.88km 3.77 N/A (in MMI>=VII) 00:22 NEIC
1310762 0 15 May 2020 14:49 5.7M, 12.6km 3.77 N/A (in MMI>=VII) 1d 00:57 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 1310529 -15.613/-172.973 5.8 15.9 3.691 15 May 2020 15:11 00:22 (new episode)
2 0 1310529 -15.613/-172.973 5.8 15.9 3.691 15 May 2020 16:55 02:06 (upd of #1)
3 0 1310529 -15.613/-172.973 5.8 15.9 3.769 16 May 2020 14:56 1d 00:07 (upd of #2)
4 0 1310762 -15.576/-173.047 5.7 12.6 3.722 16 May 2020 15:48 1d 00:59 (new episode)

Affected Provinces


Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Falehau Tonga Village - 89 km

see full list


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.