M4.6 earthquake 47 km WNW of Cartagena, Chile

A magnitude 4.6 earthquake struck 47 km WNW of Cartagena, Chile on Sat, Aug 24, 1985, 11:22 PM GMT-4 (03:22 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.7 3 km SSE of San Antonio, Chile. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.6 and up: 14 in the 60 days after this one and 6 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event usp0002j43. Read Tue, Sep 22, 2026, 8:52 PM UTC.