Chile earthquakes

M3.4 earthquake 96 km NW of Copiapó, Chile

A magnitude 3.4 earthquake struck 96 km NW of Copiapó, Chile on Mon, Jul 9, 1973, 7:50 PM GMT-4 (23:50 UTC), 25 km (16 mi) below the surface.

A larger quake followed: M6.3 120 km WNW of Copiapó, Chile. This one was a foreshock.

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

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The earthquake

Magnitude
3.4 (mb), minor
Local time
UTC
1973-07-09 23:50:50 UTC
Depth
25.0 km (15.5 mi), shallow
Epicenter
26.863° S, 71.123° W
Region
Chile
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 43 in the 60 days after this one and 32 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00002n9. Read Sun, Sep 27, 2026, 12:48 AM UTC.