M 5.4 in Antarctica on 23 Jan 2021 23:48 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: 5.4M
Depth: 10 Km
Lat/Lon: -61.7055 , -55.2091
Event Date: 23 Jan 2021 23:48 UTC
23 Jan 2021 19:48 Local
Exposed Population: No people within 100km
Source: NEIC us7000d2s3
Inserted at: 24 Jan 2021 00:34 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us7000d2s3 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
1354512 0 23 Jan 2021 23:48 5.4M, 10km 3.73 No people affected (in 100km) 00:46 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 Antarctica ,of Antarctica. The alertlevel for this event is GREEN

Intensity Population


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1354512 -61.706/-55.209 5.4 10.0 3.727 24 Jan 2021 00:38 00:50 (new episode)
2 0 1354512 -61.706/-55.209 5.4 10.0 3.727 24 Jan 2021 01:53 02:04 (upd of #1)
3 0 1354512 -61.706/-55.209 5.4 10.0 3.727 24 Jan 2021 23:54 1d 00:05 (upd of #2)

Affected Provinces

Intensity Region Province Country Population
Antarctica Antarctica 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.