M4.2 earthquake 43 km ESE of Calama, Chile
A magnitude 4.2 earthquake struck 43 km ESE of Calama, Chile on Sat, Oct 27, 1973, 4:16 PM GMT-3 (19:16 UTC), 93 km (58 mi) below the surface.
A larger quake followed: M4.7 71 km SSW of San Pedro de Atacama, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb), light
- Local time
- UTC
- 1973-10-27 19:16:01 UTC
- Depth
- 93.0 km (57.8 mi), intermediate-depth
- Epicenter
- 22.632° S, 68.550° 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
- 7
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 0 in the 30 days before it.
After
- 3.8104 km NE of Calama, Chile · 19324 days ago · 130 km deep · 100 km away
- 4.564 km NNW of Calama, Chile · 19287 days ago · 193 km deep · 99 km away
- 4.391 km NE of Calama, Chile · 19286 days ago · 121 km deep · 93 km away
- 4.771 km SSW of San Pedro de Atacama, Chile · 19279 days ago · 106 km deep · 99 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003yp. Read Mon, Sep 28, 2026, 11:26 AM UTC.