M4.2 earthquake 78 km SW of Atocha, Bolivia
A magnitude 4.2 earthquake struck 78 km SW of Atocha, Bolivia on Tue, Jul 31, 2018, 9:38 AM GMT-4 (13:38 UTC), 231 km (143 mi) below the surface.
A larger quake followed: M4.8 146 km SW of Atocha, Bolivia. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-07-31 13:38:31 UTC
- Depth
- 230.7 km (143.4 mi), intermediate-depth
- Epicenter
- 21.409° S, 66.789° 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 9.3 km horizontally, 13.3 km in depth
- Magnitude uncertainty
- ±0.22
- Depth from
- From location
- Station coverage gap
- 68°
- Stations used
- 32
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 4 in the 30 days before it.
After
- 4.4151 km SW of Atocha, Bolivia · 2972 days ago · 189 km deep · 73 km away
- 4.8146 km SW of Atocha, Bolivia · 2964 days ago · 177 km deep · 68 km away
- 4.2108 km SW of Uyuni, Bolivia · 2941 days ago · 187 km deep · 92 km away · felt by 2
- 4.3121 km SSW of Uyuni, Bolivia · 2928 days ago · 198 km deep · 58 km away
Before
- 4.0145 km NE of San Pedro de Atacama, Chile · 3001 days ago · 181 km deep · 75 km away
- 4.588 km SW of Atocha, Bolivia · 3003 days ago · 222 km deep · 10 km away
- 4.5101 km SSW of Uyuni, Bolivia · 3009 days ago · 210 km deep · 45 km away · felt by 1
- 4.1113 km SSW of Uyuni, Bolivia · 3011 days ago · 170 km deep · 52 km away
Earthquakes todayBolivia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000g2mr. Read Thu, Oct 1, 2026, 1:04 PM UTC.