M 5.5 in Chile on 03 Nov 2025 15:51 UTC

Hazard models

Rapid Impact
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: 24.9 Km
Lat/Lon: -27.4457 , -71.4784
Event Date: 03 Nov 2025 15:51 UTC
03 Nov 2025 10:51 Local
Exposed Population: 20 thousand in MMI IV
Source: NEIC us6000rl7b
Inserted at: 03 Nov 2025 16:12 UTC
INFORM Coping capacity of the alert score: 1.1 (Chile)

GDACS Score

For more info on GDACS score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us6000rl7b Scaled population (raster) 0  
  C1 shakemap 0  
  C2 shakemap 0  
  Country Vulnerability 0  
  INFORM_normalised 0  
  Score no CC 0  
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

IDLevelScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1669942 0 03 Nov 2025 15:51 5.5M, 24.9km 4.03 N/A (in MMI>=VII) 00:21 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 Atacama (population 238,212) . The alertlevel for this event is GREEN

Intensity Population
no people


Shakemaps Timeline

LevelShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1669942 -71.478/-27.446 5.5 24.9 4.242 03 Nov 2025 16:17 00:26 (new episode)
2 0 1669942 -71.478/-27.446 5.5 24.9 4.16 03 Nov 2025 16:28 00:36 (upd of #1)
3 0 1669942 -71.478/-27.446 5.5 24.9 4.202 03 Nov 2025 18:18 02:26 (upd of #2)
4 0 1669942 -71.478/-27.446 5.5 24.9 4.16 05 Nov 2025 14:02 1d 22:10 (upd of #3)

Affected Provinces

Intensity Region Province Country Population
Atacama Chile 19000 people
Atacama Chile 210000 people
Antofagasta Chile no people
Coquimbo Chile <1000 people
La Rioja Argentina no people
San Juan Argentina no people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Angostura Atacama Chile Village - 56 km
Quebrada Seca Atacama Chile Village - 63 km
Totoral Atacama Chile Village - 72 km
Calderilla Atacama Chile Village - 73 km
Caldera Atacama Chile Village - 78 km
Carrizal Bajo Atacama Chile Village - 78 km
Caserón Atacama Chile Village - 82 km
Castilla Atacama Chile Village - 98 km
Milla Quince Atacama Chile Village - 103 km
Toledo Atacama Chile Village - 107 km
Punta de Díaz Atacama Chile Village - 108 km
Algarrobal Atacama Chile Village - 112 km
Huasco Atacama Chile Village - 116 km
Paipote Atacama Chile Village - 119 km
Tierra Amarilla Atacama Chile Village - 120 km
Freirina Atacama Chile Village - 124 km
Pabellón Atacama Chile Village - 125 km
Puerto Flamenco Atacama Chile Village - 127 km
Longmilla Atacama Chile Village - 134 km
Perales Atacama Chile Village - 139 km
Vallenar Atacama Chile City 45000 people 143 km

see full list


Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Caldera 55 Civ. Unpaved No 3900 79 km
Chamonate CPO 291 Civ. Paved No 5400 107 km

Ports

Intensity Name LOCODE Country Distance
Caldera CLCLD Chile 77 km
Carrizal Chile 77 km
Huasco CLHSO Chile 115 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.