M 6.6 in Antarctica on 21 Feb 2022 23:24 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: 6.6M
Depth: 10 Km
Lat/Lon: -69.7688 , 165.4105
Event Date: 21 Feb 2022 23:24 UTC
22 Feb 2022 12:24 Local
Exposed Population: No people affected in 100km
Source: NEIC us7000gmtt
Inserted at: 21 Feb 2022 23:43 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0 0 0
us7000gmtt 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
1427615 0 21 Feb 2022 23:24 6.6M, 10km 4.1 No people affected (in 100km) 0m (at 00:00) 00:19 NEIC
1427617 0 21 Feb 2022 23:24 6.3M, 10km 3.91 N/A (in MMI>=VII) 0m (at 00:00) 00:46 NEIC
1428817 0 21 Feb 2022 23:24 6.3M, 14km 3.93 No people affected (in 100km) 0m (at 00:00) 6d 22:38 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 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 1427615 -69.769/165.41 6.6 10.0 4.1 21 Feb 2022 23:46 00:22 (new episode)
2 0 1427617 -69.76/165.432 6.3 10.0 3.906 22 Feb 2022 00:10 00:46 (new episode)
3 0 1427617 -69.76/165.432 6.3 10.0 3.906 22 Feb 2022 01:29 02:04 (upd of #2)
4 0 1427617 -69.76/165.432 6.3 10.0 3.906 22 Feb 2022 23:40 1d 00:16 (upd of #3)
5 0 1428817 -69.782/165.41 6.3 14.0 3.932 01 Mar 2022 07:51 7d 08:26 (new episode)

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.