M 6.3 in South Georgia and the South Sandwich Islands on 26 Jul 2020 00:53 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: 6.3M
Depth: 10 Km
Lat/Lon: -60.783 , -25.3145
Event Date: 26 Jul 2020 00:53 UTC
25 Jul 2020 22:53 Local
Exposed Population: No people affected in MMI V
No people within 100km
Source: NEIC us6000b46r
Inserted at: 26 Jul 2020 01:14 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)
Tsunami GDACS score
NEIC 0 0 0
us6000b46r Scaled population (raster) 0 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0m  
  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
1323305 0 26 Jul 2020 00:54 6.5M, 33km N/A No people affected 0m (at 00:00) 00:12 PTWC
1323310 0 26 Jul 2020 00:53 6.3M, 10km 3.23 No people affected 0m (at 00:00) 00:20 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 1323310 -60.783/-25.314 6.3 10.0 3.231 26 Jul 2020 01:14 00:20 (new episode)
2 0 1323310 -60.783/-25.314 6.3 10.0 3.231 26 Jul 2020 02:57 02:03 (upd of #1)
3 0 1323310 -60.783/-25.314 6.3 10.0 3.231 27 Jul 2020 00:56 1d 00:02 (upd of #2)

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.