Chile earthquakes

M4.2 earthquake 79 km SW of San Antonio, Chile

A magnitude 4.2 earthquake struck 79 km SW of San Antonio, Chile on Wed, Nov 21, 2012, 7:51 PM GMT-3 (22:51 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.2 50 km SW of San Antonio, Chile. This one was a foreshock.

San Antonio 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
2012-11-21 22:51:23 UTC
Depth
34.9 km (21.7 mi), shallow
Epicenter
34.012° S, 72.305° W
Region
Chile
Tsunami flag
No
Status
Reviewed by a seismologist

What happened

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

no people dead or missing; no people injured; no buildings damaged or destroyed

From the USGS event page for usp000jvxp. 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
151°
Stations used
36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 5.250 km SW of San Antonio, Chile · 5063 days ago · 16 km deep · 31 km away · felt by 10
  2. 3.921 km SW of Melipilla, Chile · 5041 days ago · 59 km deep · 89 km away
  3. 4.621 km SW of Melipilla, Chile · 5038 days ago · 63 km deep · 86 km away · felt by 18
  4. 4.851 km SW of San Antonio, Chile · 5031 days ago · 12 km deep · 34 km away · felt by 10

Before

  1. 5.945 km SSW of San Antonio, Chile · 5063 days ago · 18 km deep · 41 km away · felt by 73
  2. 5.158 km SW of San Antonio, Chile · 5064 days ago · 19 km deep · 21 km away · felt by 19
  3. 5.469 km WSW of San Antonio, Chile · 5065 days ago · 16 km deep · 11 km away · felt by 28
  4. 5.163 km SW of San Antonio, Chile · 5066 days ago · 11 km deep · 16 km away · felt by 9
  5. 4.2Off the coast of Valparaiso, Chile · 5066 days ago · 1 km deep · 15 km away
  6. 4.474 km SW of San Antonio, Chile · 5074 days ago · 38 km deep · 5 km away
  7. 4.868 km SW of San Antonio, Chile · 5074 days ago · 16 km deep · 12 km away · felt by 3
  8. 4.663 km SW of San Antonio, Chile · 5074 days ago · 13 km deep · 17 km away · felt by 5
  9. 4.016 km N of Cartagena, Chile · 5088 days ago · 34 km deep · 93 km away
  10. 4.437 km W of San Antonio, Chile · 5089 days ago · 47 km deep · 50 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000jvxp. Read Sat, Oct 3, 2026, 8:15 AM UTC.