M4.9 earthquake 157 km WSW of Colchani, Bolivia
A magnitude 4.9 earthquake struck 157 km WSW of Colchani, Bolivia on Fri, Aug 15, 1975, 4:22 AM GMT-4 (08:22 UTC), 87 km (54 mi) below the surface.
A larger quake followed: M5.1 152 km N 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
- 4.9 (mb), light
- Local time
- UTC
- 1975-08-15 08:22:05 UTC
- Depth
- 87.0 km (54.1 mi), intermediate-depth
- Epicenter
- 20.875° S, 68.312° 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
- 25
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 1 in the 60 days after this one and 1 in the 30 days before it.
After
Before
Earthquakes todayBolivia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000cfx. Read Wed, Sep 30, 2026, 6:15 PM UTC.