M 6.6 Off-shore on 03 Apr 2021 01:16 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: -57.9898 , -7.8147
Event Date: 03 Apr 2021 01:16 UTC
03 Apr 2021 00:16 Local
Exposed Population: No people within 100km
Source: NEIC us6000dynd
Inserted at: 03 Apr 2021 01:58 UTC
INFORM Coping capacity of the alert score: 1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0 0 0
us6000dynd 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
1368325 0 03 Apr 2021 01:16 6.4M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:20 NEIC
1368330 0 03 Apr 2021 01:16 6.6M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:41 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 1368330 -57.99/-7.815 6.6 10.0 None 03 Apr 2021 02:09 00:52 (new episode)
2 0 1368330 -57.99/-7.815 6.6 10.0 None 03 Apr 2021 03:20 02:03 (upd of #1)
3 0 1368330 -57.99/-7.815 6.6 10.0 None 04 Apr 2021 01:20 1d 00:03 (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.