M 5.7 in South Georgia and the South Sandwich Islands on 04 Dec 2021 14:27 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: 10 Km
Lat/Lon: -59.7143 , -27.9998
Event Date: 04 Dec 2021 14:27 UTC
04 Dec 2021 12:27 Local
Exposed Population: No people affected in 100km
Source: NEIC us6000g90r
Inserted at: 04 Dec 2021 18:05 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
us6000g90r 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
1413748 0 04 Dec 2021 14:27 5.8M, 29.98km 4.56 No people affected (in 100km) 00:20 NEIC
1413752 0 04 Dec 2021 14:27 5.9M, 10km 3.82 No people affected (in 100km) 01:03 NEIC
1413762 0 04 Dec 2021 14:27 5.7M, 10km 3.73 No people affected (in 100km) 03:38 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


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1413752 -59.538/-27.743 5.8 30.0 4.56 04 Dec 2021 14:50 00:23 (new episode)
2 0 1413752 -59.715/-27.992 5.9 10.0 3.817 04 Dec 2021 15:31 01:04 (upd of #1)
3 0 1413762 -59.715/-27.992 5.9 10.0 3.817 04 Dec 2021 16:30 02:03 (new episode)
4 0 1413762 -59.714/-28 5.7 10.0 3.732 04 Dec 2021 18:08 03:41 (upd of #3)
5 0 1413762 -59.714/-28 5.7 10.0 3.732 05 Dec 2021 14:31 1d 00:04 (upd of #4)

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.