M6.4 earthquake 49 km WNW of La Ligua, Chile
A magnitude 6.4 earthquake struck 49 km WNW of La Ligua, Chile on Sun, Jul 11, 1971, 5:51 AM GMT-4 (09:51 UTC), 40 km (25 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.4 (mw), strong
- Local time
- UTC
- 1971-07-11 09:51:39 UTC
- Depth
- 39.5 km (24.5 mi), shallow
- Epicenter
- 32.299° S, 71.726° W
- Region
- Chile
- Strongest shaking
- VI, strong shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- VI, strong shaking
- Peak ground acceleration
- 14.3% of gravity
- Peak ground velocity
- 2.0 cm/s
- Map
- Automatic

Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Magnitude uncertainty
- ±0.23
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 3.4 and up: 4 in the 60 days after this one and 6 in the 30 days before it.
After
- 5.532 km WSW of Valparaíso, Chile · 20168 days ago · 39 km deep · 93 km away
- 5.469 km WNW of La Ligua, Chile · 20168 days ago · 26 km deep · 20 km away
- 5.130 km WNW of Valparaíso, Chile · 20168 days ago · 15 km deep · 71 km away
- 5.638 km WSW of La Ligua, Chile · 20148 days ago · 40 km deep · 28 km away
Before
- 5.034 km N of Valparaíso, Chile · 20170 days ago · 30 km deep · 48 km away
- 5.432 km NNW of Valparaíso, Chile · 20170 days ago · 37 km deep · 50 km away
- 5.239 km SW of Illapel, Chile · 20171 days ago · 50 km deep · 51 km away
- 5.539 km WNW of La Ligua, Chile · 20171 days ago · 30 km deep · 10 km away
- 5.964 km W of La Ligua, Chile · 20171 days ago · 24 km deep · 19 km away
- 7.819 km NNE of Hacienda La Calera, Chile · 20171 days ago · 61 km deep · 63 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem782093 (also filed as atlas19710711095136). Read Tue, Sep 29, 2026, 8:55 AM UTC.