M4.4 earthquake 173 km WSW of Colchani, Bolivia
A magnitude 4.4 earthquake struck 173 km WSW of Colchani, Bolivia on Thu, Oct 9, 1986, 6:40 AM GMT-4 (10:40 UTC), 127 km (79 mi) below the surface.
A larger quake followed: M4.9 136 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
- 4.4 (mb), light
- Local time
- UTC
- 1986-10-09 10:40:54 UTC
- Depth
- 126.6 km (78.7 mi), intermediate-depth
- Epicenter
- 20.944° S, 68.454° 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.
- Depth from
- FROM_LOCATION
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.2135 km NNE of Calama, Chile · 14590 days ago · 127 km deep · 39 km away
- 4.0118 km NNE of Calama, Chile · 14576 days ago · 129 km deep · 61 km away
- 4.9136 km NNE of Calama, Chile · 14569 days ago · 134 km deep · 56 km away
Before
Earthquakes todayBolivia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002ytb. Read Tue, Sep 22, 2026, 9:01 PM UTC.