M 5.5 in Kermadec Islands Region on 29 Apr 2021 06:53 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: -29.0731 , -176.9923
Event Date: 29 Apr 2021 06:53 UTC
28 Apr 2021 18:53 Local
Exposed Population: No people within 100km
Source: NEIC us7000dyh1
Inserted at: 29 Apr 2021 08:05 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
us7000dyh1 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
1372702 0 29 Apr 2021 06:53 5.5M, 10km 2.94 No people affected (in 100km) 01:11 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 1372702 -29.073/-176.992 5.5 10.0 3.187 29 Apr 2021 08:07 01:13 (new episode)
2 0 1372702 -29.073/-176.992 5.5 10.0 2.942 29 Apr 2021 08:56 02:02 (upd of #1)
3 0 1372702 -29.073/-176.992 5.5 10.0 2.942 30 Apr 2021 06:58 1d 00:04 (upd of #2)

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.