Chile earthquakes

M4.1 earthquake 174 km N of Calama, Chile

A magnitude 4.1 earthquake struck 174 km N of Calama, Chile on Tue, Feb 27, 1973, 1:36 AM GMT-3 (04:36 UTC), 120 km (75 mi) below the surface.

A larger quake followed: M5.6 112 km ESE of Iquique, Chile. This one was a foreshock.

Pozo Almonte 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
4.1 (mb), light
Local time
UTC
1973-02-27 04:36:49 UTC
Depth
120.0 km (74.6 mi), intermediate-depth
Epicenter
20.901° S, 68.636° 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.

Stations used
8

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 4 in the 30 days before it.

After

  1. 5.6112 km ESE of Iquique, Chile · 19531 days ago · 95 km deep · 63 km away
  2. 4.5160 km NNE of Calama, Chile · 19530 days ago · 125 km deep · 36 km away
  3. 4.2Chile-Bolivia border region · 19520 days ago · 126 km deep · 83 km away
  4. 4.0124 km NNE of Calama, Chile · 19517 days ago · 124 km deep · 64 km away

Before

  1. 4.8144 km E of Iquique, Chile · 19572 days ago · 110 km deep · 56 km away
  2. 3.994 km ESE of Iquique, Chile · 19585 days ago · 122 km deep · 87 km away
  3. 3.9133 km ESE of Iquique, Chile · 19592 days ago · 112 km deep · 44 km away
  4. 4.6116 km NNE of Calama, Chile · 19596 days ago · 122 km deep · 66 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00000r8. Read Sun, Sep 27, 2026, 11:01 PM UTC.