M 5.5 in South Georgia and the South Sandwich Islands on 15 Sep 2017 18:48 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: 5.5M
Depth: 9 Km
Lat/Lon: -55.4644 , -28.3292
Event Date: 15 Sep 2017 18:48 UTC
15 Sep 2017 16:48 Local
Exposed Population: No people within 100km
Source: NEIC us2000anjp
Inserted at: 16 Sep 2017 15:35 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
us2000anjp 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
1180742 0 15 Sep 2017 18:48 5.8M, 10km 3.38 N/A (in MMI>=VII) 00:16 NEIC
1180854 0 15 Sep 2017 18:48 5.5M, 9km 2.96 N/A (in MMI>=VII) 20:47 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
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1180742 -55.452/-28.316 5.8 10 3.38 15 Sep 2017 19:05 00:17 (new episode)
2 0 1180742 -55.452/-28.316 5.8 10 3.38 15 Sep 2017 20:50 02:02 (upd of #1)
3 0 1180854 -55.452/-28.316 5.8 10 3.38 16 Sep 2017 15:35 20:47 (new episode)
4 0 1180854 -55.464/-28.329 5.5 9 2.96 16 Sep 2017 15:36 20:48 (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.