M 5.5 in Chile on 22 Apr 2021 00:17 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: 7.5 Km
Lat/Lon: -33.9901 , -72.3393
Event Date: 22 Apr 2021 00:17 UTC
21 Apr 2021 19:17 Local
Exposed Population: 250000 people within 100km
Source: NEIC us6000e3j6
Inserted at: 22 Apr 2021 00:37 UTC
INFORM Coping capacity of the alert score: 3 (Chile)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us6000e3j6 Scaled population (vector) 0  
  C1 shakemap -1.16  
  C2 shakemap 0.54  
  Country Vulnerability 0  
  INFORM_normalised 0.75  
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
1371390 0 22 Apr 2021 00:17 5.5M, 7.5km 3.93 N/A (in MMI>=VII) 00:19 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 Chile ,of Libertador General Bernardo O'Higgins (population 21,786) . 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 1371390 -33.99/-72.339 5.5 7.5 4.024 22 Apr 2021 00:38 00:21 (new episode)
2 0 1371390 -33.99/-72.339 5.5 7.5 3.931 22 Apr 2021 01:25 01:08 (upd of #1)
3 0 1371390 -33.99/-72.339 5.5 7.5 3.931 22 Apr 2021 02:21 02:03 (upd of #2)
4 0 1371390 -33.99/-72.339 5.5 7.5 3.93 23 Apr 2021 00:22 1d 00:05 (upd of #3)

Affected Provinces

Intensity Region Province Country Population
Libertador General Bernardo O'Higgins Chile 22000 people
Valparaiso Chile 2800 people
Region Metropolitana Chile <1000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Matanzas Libertador General Bernado O'Higgins Chile Village - 44 km
Navidad Libertador General Bernado O'Higgins Chile Village - 48 km
San Vicente Libertador General Bernado O'Higgins Chile Village - 52 km
Pichilemu Libertador General Bernado O'Higgins Chile Village - 53 km
Rapel Libertador General Bernado O'Higgins Chile Village - 56 km
El Rosario Libertador General Bernado O'Higgins Chile Village - 58 km
Ciruelos Libertador General Bernado O'Higgins Chile Village - 61 km

see full list


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.