M4.2 earthquake 161 km NNE of Calama, Chile
A magnitude 4.2 earthquake struck 161 km NNE of Calama, Chile on Tue, Oct 2, 1973, 2:39 PM GMT-3 (17:39 UTC), 110 km (68 mi) below the surface.
A larger quake followed: M5.1 133 km WSW of Colchani, Bolivia. 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
- 1973-10-02 17:39:52 UTC
- Depth
- 110.0 km (68.4 mi), intermediate-depth
- Epicenter
- 21.169° S, 68.198° 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
- 9
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.1133 km WSW of Colchani, Bolivia · 19353 days ago · 107 km deep · 30 km away
- 4.0148 km SE of Iquique, Chile · 19353 days ago · 141 km deep · 90 km away
- 4.7117 km SW of Uyuni, Bolivia · 19352 days ago · 173 km deep · 61 km away
- 4.9150 km SSW of Uyuni, Bolivia · 19328 days ago · 210 km deep · 97 km away
- 3.8104 km NE of Calama, Chile · 19324 days ago · 130 km deep · 70 km away
- 4.1126 km NNE of Calama, Chile · 19311 days ago · 123 km deep · 46 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003na. Read Mon, Sep 28, 2026, 7:07 AM UTC.