Chile earthquakes

M4.2 earthquake 52 km SW of Coquimbo, Chile

A magnitude 4.2 earthquake struck 52 km SW of Coquimbo, Chile on Wed, Oct 21, 2015, 9:02 PM GMT-3 (00:02 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M6.9 81 km NW of Coquimbo, Chile. This one was a foreshock.

Coquimbo forecastMore in Chile

Map

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

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The earthquake

Magnitude
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2015-10-22 00:02:55 UTC
Depth
22.1 km (13.7 mi), shallow
Epicenter
30.305° S, 71.700° W
Region
Chile
Tsunami flag
No
Status
Reviewed by a seismologist

What happened

The USGS’s account of the effects of this earthquake.

Felt (IV) at Coquimbo and La Serena.

From the USGS event page for us10003qiw. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.9 km horizontally, 6.4 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
90°
Stations used
44

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 128 in the 60 days after this one and 154 in the 30 days before it.

After

The first 60 of 128.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10003qiw. Read Sat, Oct 3, 2026, 6:44 AM UTC.