Chile earthquakes

M4.0 earthquake 54 km NNE of San Pedro de Atacama, Chile

A magnitude 4.0 earthquake struck 54 km NNE of San Pedro de Atacama, Chile on Mon, Aug 21, 2017, 3:24 PM GMT-3 (18:24 UTC), 171 km (106 mi) below the surface.

A larger quake followed: M5.5 42 km ENE of Calama, Chile. This one was a foreshock.

Calama forecast More in Chile

Map

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

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The earthquake

Magnitude: 4.0 (ML, local (Richter)), light
Magnitude from: USGS National Earthquake Information Center
Local time: Mon, Aug 21, 2017, 3:24 PM GMT-3
UTC: 2017-08-21 18:24:21 UTC
Depth: 170.9 km (106.2 mi), intermediate-depth
Epicenter: 22.480° S, 67.949° 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.

Location uncertainty: About 10.0 km horizontally, 7.1 km in depth
Stations used: 0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 5 in the 30 days before it.

After

Before

Earthquakes today Chile earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000aa9c. Read Thu, Oct 1, 2026, 7:04 PM UTC.