M5.0 earthquake 145 km N of Calama, Chile
A magnitude 5.0 earthquake struck 145 km N of Calama, Chile on Mon, Oct 20, 1975, 12:34 AM GMT-3 (03:34 UTC), 132 km (82 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
- 5.0 (mb), moderate
- Local time
- UTC
- 1975-10-20 03:34:07 UTC
- Depth
- 132.0 km (82.0 mi), intermediate-depth
- Epicenter
- 21.165° S, 68.671° 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.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
- Stations used
- 36
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.0 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.197 km NNE of Calama, Chile · 18607 days ago · 95 km deep · 64 km away
- 5.1160 km NNE of Calama, Chile · 18588 days ago · 77 km deep · 28 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000d6z. Read Wed, Sep 30, 2026, 10:31 PM UTC.