107 km ESE of Antofagasta, Chile

71 days ago

USGS

A magnitude 4.3 earthquake struck 107 km ESE of Antofagasta, Chile on 28 Aug 2026, 23:48 UTC. The hypocentre was 78.7 km below the surface — intermediate by seismological convention.

Depth: 78.7 km
Latitude: 23.95°S
Time: 23:48 UTC
Magnitude: M4.3

EPICENTRE

View the official report↗

MAGNITUDE 4.3

Noticeable shaking of indoor objects. Damage is unlikely.

The scale is logarithmic: this released about 89 times the energy of a magnitude 3.0, roughly the energy of 43 tonnes of TNT.

78.7 KM DEEP

At this depth the energy spreads before it reaches the surface. Shaking is usually weaker than a shallow earthquake of the same size, but it can be felt across a wider area.