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Chile · Antofagasta Region

M3.1 Earthquake near Mejillones, Antofagasta Region (Chile)

UTC time: 2026-10-31 06:41:43 UTC Local time: —
Magnitude
M3.1
Depth
45.3 km
Source
EMSC

Antofagasta Region · Mejillones

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About this earthquake

On October 31, 2026 at 06:41 UTC, a magnitude M3.1 earthquake occurred near Mejillones, Antofagasta Region (Chile). The hypocenter lay relatively close to the surface at around 45 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The event was recorded by EMSC. Chile: 37 earthquakes were recorded in the past 24 hours, the strongest reaching M4.5.

Depth profile

Depth profile Depth: 45.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 45.3 km
Shallow
45.3 km
45.3 km — shallower than the regional average (100 km)
Regional average: 100 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Volcanoes nearby

  • Negrillar, La
    Distance: 211 km ·Pyroclastic cone(s) ·Elevation: 4'220 m ·Chile
  • Tilocalar
    Distance: 230 km ·Lava cone(es) ·Elevation: 3'109 m ·Chile
  • Licancabur
    Distance: 237 km ·Stratovolcano ·Elevation: 5'916 m ·Chile-Bolivia
  • Sairecabur
    Distance: 238 km ·Stratovolcano(es) ·Elevation: 5'961 m ·Chile-Bolivia
  • Tujle, Cerro
    Distance: 242 km ·Maar ·Elevation: 3'550 m ·Chile
  • Socompa
    Distance: 244 km ·Stratovolcano ·Elevation: 6'031 m ·Last eruption: -5250 ·Chile-Argentina

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Andrés Sabella Gálvez International AirportChile · ANF · SCFA
    47.0 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-11-01

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Antofagasta Region

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 3.0 · 527 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

Historic earthquake map · Chile

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · Chile

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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