M4.0 earthquake 88 km WSW of Atocha, Bolivia
A magnitude 4.0 earthquake struck 88 km WSW of Atocha, Bolivia on Tue, Sep 1, 2015, 6:28 AM GMT-4 (10:28 UTC), 250 km (155 mi) below the surface.
A larger quake followed: M4.4 126 km NE of San Pedro de Atacama, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mb), light
- Local time
- UTC
- 2015-09-01 10:28:49 UTC
- Depth
- 250.2 km (155.5 mi), intermediate-depth
- Epicenter
- 21.372° S, 66.933° 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.
- Location uncertainty
- About 8.8 km horizontally, 8.7 km in depth
- Magnitude uncertainty
- ±0.30
- Depth from
- From location
- Station coverage gap
- 52°
- Stations used
- 41
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.2136 km NNE of San Pedro de Atacama, Chile · 4039 days ago · 193 km deep · 80 km away
- 4.2115 km SW of Uyuni, Bolivia · 4029 days ago · 206 km deep · 53 km away
- 4.4126 km NE of San Pedro de Atacama, Chile · 4018 days ago · 185 km deep · 89 km away
- 4.480 km SW of Atocha, Bolivia · 4011 days ago · 231 km deep · 14 km away
Before
Earthquakes todayBolivia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us20003jch. Read Wed, Sep 30, 2026, 3:16 PM UTC.