Chile earthquakes

M4.7 earthquake 69 km WSW of Constitución, Chile

A magnitude 4.7 earthquake struck 69 km WSW of Constitución, Chile on Mon, Oct 31, 2011, 9:02 PM GMT-3 (00:02 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M4.8 78 km NNW of Tomé, Chile. This one was a foreshock.

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Map

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

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The earthquake

Magnitude: 4.7 (mb, body-wave), light
Magnitude from: USGS National Earthquake Information Center
Local time: Mon, Oct 31, 2011, 9:02 PM GMT-3
UTC: 2011-11-01 00:02:14 UTC
Depth: 21.2 km (13.2 mi), shallow
Epicenter: 35.594° S, 73.111° 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 Cauquenes, Chanco, Constitucion and Pelluhue; (III) at Chillan, Cobquecura, Concepcion, Hualpen, Quirihue, San Carlos, San Pedro de la Paz, Talca and Tome; (II) at Longavi, Parral, Pencahue, Romeral, San Clemente, Talcahuano and Villa Alegre.

From the USGS event page for usp000ja67. 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.

Station coverage gap: 149°
Stations used: 32

Nearest places

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

Nearby

Within 100 km, magnitude 1.7 and up: 7 in the 60 days after this one and 1 in the 30 days before it.

After

Before

4.733 km NNW of Constitución, ChileFri, Oct 14, 12:31 PM GMT-3 · 5469 days ago · 20 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000ja67. Read Sun, Oct 4, 2026, 3:13 AM UTC.