M4.6 earthquake 153 km SW of Uyuni, Bolivia
A magnitude 4.6 earthquake struck 153 km SW of Uyuni, Bolivia on Sat, Jul 28, 1973, 1:59 AM GMT-4 (05:59 UTC), 159 km (99 mi) below the surface.
A larger quake followed: M4.8 141 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
- 4.6 (mb), light
- Local time
- UTC
- 1973-07-28 05:59:46 UTC
- Depth
- 159.0 km (98.8 mi), intermediate-depth
- Epicenter
- 21.431° S, 67.874° 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
- 16
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 3 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.8141 km NE of Calama, Chile · 19417 days ago · 89 km deep · 18 km away
- 4.8141 km NNE of Calama, Chile · 19390 days ago · 113 km deep · 71 km away
- 4.799 km NNE of Calama, Chile · 19367 days ago · 120 km deep · 87 km away
Before
Earthquakes todayBolivia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00002wc. Read Tue, Sep 29, 2026, 10:51 AM UTC.