M 5.6 in South Georgia and the South Sandwich Islands on 05 Dec 2021 18:26 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: 5.6M
Depth: 39.41 Km
Lat/Lon: -59.8917 , -29.3125
Event Date: 05 Dec 2021 18:26 UTC
05 Dec 2021 16:26 Local
Exposed Population: No people affected in 100km
Source: NEIC us6000g9bb
Inserted at: 06 Dec 2021 17:10 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
us6000g9bb 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
1413945 0 05 Dec 2021 18:26 5.7M, 51.01km 3.26 No people affected (in 100km) 00:19 NEIC
1414117 0 05 Dec 2021 18:26 5.6M, 39.41km 3.23 No people affected (in 100km) 22:43 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 1413945 -59.922/-29.364 5.7 51.0 3.255 05 Dec 2021 18:49 00:22 (new episode)
2 0 1414117 -59.922/-29.364 5.7 51.0 3.255 05 Dec 2021 20:30 02:04 (new episode)
3 0 1414117 -59.892/-29.312 5.6 39.4 3.233 06 Dec 2021 17:12 22:45 (upd of #2)
4 0 1414117 -59.892/-29.312 5.6 39.4 3.233 06 Dec 2021 18:30 1d 00:04 (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.