M 5.5 Off-shore on 04 Mar 2021 23:34 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: 10 Km
Lat/Lon: -28.5079 , -176.2193
Event Date: 04 Mar 2021 23:34 UTC
04 Mar 2021 11:34 Local
Exposed Population: No people within 100km
Source: NEIC us7000dfqg
Inserted at: 05 Mar 2021 01:31 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
us7000dfqg 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
1362251 0 04 Mar 2021 23:34 5.4M, 10km N/A No people affected (in 100km) 00:28 NEIC
1362298 0 04 Mar 2021 23:34 5.5M, 10km 2.65 No people affected (in 100km) 01:56 NEIC
1363174 0 04 Mar 2021 23:34 5.5M, 10km 2.64 No people affected (in 100km) 2d 05:22 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 1362251 -28.871/-175.719 5.4 10.0 None 05 Mar 2021 00:05 00:30 (new episode)
2 0 1362298 -28.508/-176.219 5.5 10.0 2.65 05 Mar 2021 01:39 02:04 (new episode)
3 0 1362298 -28.508/-176.219 5.5 10.0 2.65 05 Mar 2021 23:38 1d 00:03 (upd of #2)
4 0 1363174 -28.525/-176.169 5.5 10.0 2.635 07 Mar 2021 04:56 2d 05:21 (new episode)

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.