M4.1 earthquake 97 km NNE of Calama, Chile
A magnitude 4.1 earthquake struck 97 km NNE of Calama, Chile on Tue, Oct 21, 1975, 1:27 PM GMT-3 (16:27 UTC), 95 km (59 mi) below the surface.
A larger quake followed: M5.1 160 km NNE of Calama, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb), light
- Local time
- UTC
- 1975-10-21 16:27:45 UTC
- Depth
- 95.0 km (59.0 mi), intermediate-depth
- Epicenter
- 21.700° S, 68.435° 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
- 5
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 2 in the 30 days before it.
After
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000d7n. Read Mon, Sep 28, 2026, 9:01 PM UTC.