M 5.1 Off-shore on 22 Feb 2021 23:49 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: 5.1M
Depth: 51.53 Km
Lat/Lon: -31.3867 , -178.4518
Event Date: 22 Feb 2021 23:49 UTC
22 Feb 2021 11:49 Local
Exposed Population: No people within 100km
Source: NEIC us6000dkac
Inserted at: 23 Feb 2021 14:55 UTC
INFORM Coping capacity of the alert score: 1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us6000dkac 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
1360077 0 22 Feb 2021 23:49 5.4M, 57.31km 4.03 No people affected (in 100km) 00:25 NEIC
1360086 0 22 Feb 2021 23:49 5.4M, 47.79km 3.73 No people affected (in 100km) 02:14 NEIC
1360195 0 22 Feb 2021 23:49 5.1M, 51.53km 3.73 No people affected (in 100km) 15:06 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 1360077 -31.351/-178.455 5.4 57.3 4.034 23 Feb 2021 00:15 00:26 (new episode)
2 0 1360077 -31.351/-178.455 5.4 57.3 4.034 23 Feb 2021 01:04 01:15 (upd of #1)
3 0 1360077 -31.351/-178.455 5.4 57.3 4.034 23 Feb 2021 01:52 02:03 (upd of #2)
4 0 1360086 -31.392/-178.453 5.4 47.8 3.73 23 Feb 2021 02:35 02:45 (new episode)
5 0 1360195 -31.387/-178.452 5.1 51.5 3.733 23 Feb 2021 14:56 15:06 (new episode)
6 0 1360195 -31.387/-178.452 5.1 51.5 3.733 23 Feb 2021 23:53 1d 00:04 (upd of #5)

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.