M 5.7 in South Georgia and the South Sandwich Islands on 09 Apr 2018 00:20 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: 5.7M
Depth: 239.78 Km
Lat/Lon: -57.6528 , -27.8383
Event Date: 09 Apr 2018 00:20 UTC
08 Apr 2018 22:20 Local
Exposed Population: No people within 100km
Source: NEIC us2000dwpi
Inserted at: 09 Apr 2018 00:40 UTC
INFORM Coping capacity of the alert score: 1.1 (South Georgia & the South Sandwich Is.)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us2000dwpi Scaled population (vector) -8  
  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
1206054 0 09 Apr 2018 00:20 5.7M, 239.78km 2.69 N/A (in MMI>=VII) 00:19 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 South Georgia and the South Sandwich Islands ,of South Georgia & the South Sandwich Is.. The alertlevel for this event is GREEN

Intensity Population
no people
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1206054 -57.653/-27.838 5.7 239.78 2.69 09 Apr 2018 00:41 00:20 (new episode)
2 0 1206054 -57.653/-27.838 5.7 239.78 2.69 09 Apr 2018 02:23 02:02 (upd of #1)

Affected Provinces

Intensity Region Province Country Population
South Georgia & the South Sandwich Is. South Georgia and the South Sandwich Islands no people


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.