M4.3 earthquake 144 km SW of Uyuni, Bolivia
A magnitude 4.3 earthquake struck 144 km SW of Uyuni, Bolivia on Tue, Apr 12, 1977, 3:32 PM GMT-4 (19:32 UTC), 181 km (112 mi) below the surface.
A larger quake followed: M5.0 74 km NE 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
- 4.3 (mb), light
- Local time
- UTC
- 1977-04-12 19:32:31 UTC
- Depth
- 181.0 km (112.5 mi), intermediate-depth
- Epicenter
- 21.281° S, 67.901° W
- Region
- Bolivia
- 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: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.074 km NE of Calama, Chile · 18033 days ago · 80 km deep · 96 km away
- 4.6153 km NE of Calama, Chile · 18020 days ago · 33 km deep · 24 km away
Before
Earthquakes todayBolivia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000nch. Read Tue, Sep 22, 2026, 12:14 PM UTC.