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M3.3 Depth: 38.0 km

M3.3 Earthquake near BIO-BIO, CHILE (Chile)

UTC time: 2025-10-18 02:49:36 UTC Local time: —

About this earthquake

On October 18, 2025 at 02:49 UTC, a magnitude M3.3 earthquake occurred near BIO-BIO, CHILE (Chile). The hypocenter lay relatively close to the surface at around 38 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The event was recorded by EMSC. Chile: 34 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

Magnitude
M3.3
Depth
38.0 km
UTC time
2025-10-18 02:49:36 UTC
Local time
—
Country
Chile
City
Región del Biobío
Source
emsc
Coordinates
-37.55000, -72.23000
Temperature
9.1°C

Map

Depth profile

Depth profile Depth: 38 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 38 km
Shallow
38 km
38 km — shallower than the regional average (99.1 km)
Regional average: 99.1 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

  • Antuco
    Distance: 79 km ·Stratovolcano ·Elevation: 2'979 m ·Last eruption: 1869 ·Chile
  • Callaqui
    Distance: 81 km ·Stratovolcano ·Elevation: 3'099 m ·Last eruption: 1980 ·Chile
  • Copahue
    Distance: 98 km ·Stratovolcano ·Elevation: 2'953 m ·Last eruption: 2024 ·Chile-Argentina
  • Tolhuaca
    Distance: 99 km ·Stratovolcano ·Elevation: 2'739 m ·Last eruption: -4000 ·Chile
  • Chillan, Nevados de
    Distance: 107 km ·Stratovolcano ·Elevation: 3'180 m ·Last eruption: 2022 ·Chile
  • Lonquimay
    Distance: 108 km ·Stratovolcano ·Elevation: 2'832 m ·Last eruption: 1990 ·Chile

Historic earthquake map · Chile

Open history map
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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