M 5.8 in Kermadec Islands Region on 27 Apr 2021 16:33 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: 5.8M
Depth: 10 Km
Lat/Lon: -29.1146 , -176.8353
Event Date: 27 Apr 2021 16:33 UTC
27 Apr 2021 04:33 Local
Exposed Population: No people within 100km
Source: NEIC us7000dxxy
Inserted at: 27 Apr 2021 18:27 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
us7000dxxy Scaled population (vector) 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
1372385 0 27 Apr 2021 16:33 5.9M, 10km 3.46 No people affected (in 100km) 00:20 NEIC
1372388 0 27 Apr 2021 16:33 5.9M, 10km 3.24 No people affected (in 100km) 00:27 NEIC
1372419 0 27 Apr 2021 16:33 5.8M, 10km 3.25 N/A (in MMI>=VII) 01:53 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
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1372385 -29.204/-176.817 5.9 10.0 3.464 27 Apr 2021 16:59 00:25 (new episode)
2 0 1372388 -29.135/-176.825 5.9 10.0 3.244 27 Apr 2021 17:33 01:00 (new episode)
3 0 1372419 -29.115/-176.835 5.8 10.0 3.207 27 Apr 2021 18:38 02:05 (new episode)
4 0 1372419 -29.123/-176.84 5.9 10.0 3.248 27 Apr 2021 22:14 05:40 (upd of #3)
5 0 1372419 -29.123/-176.84 5.9 10.0 3.25 28 Apr 2021 16:38 1d 00:04 (upd of #4)

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.