M4.2 earthquake 44 km WSW of Atocha, Bolivia
A magnitude 4.2 earthquake struck 44 km WSW of Atocha, Bolivia on Sat, Oct 21, 2017, 6:37 PM GMT-4 (22:37 UTC), 233 km (145 mi) below the surface.
A larger quake followed: M4.4 74 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
- 2017-10-21 22:37:02 UTC
- Depth
- 232.7 km (144.6 mi), intermediate-depth
- Epicenter
- 21.015° S, 66.637° 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 8.1 km horizontally, 7.5 km in depth
- Magnitude uncertainty
- ±0.13
- Depth from
- From location
- Station coverage gap
- 41°
- Stations used
- 50
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
- 4.199 km SW of Uyuni, Bolivia · 3242 days ago · 217 km deep · 84 km away
- 4.364 km SW of Atocha, Bolivia · 3231 days ago · 224 km deep · 40 km away
- 4.474 km SW of Atocha, Bolivia · 3215 days ago · 217 km deep · 52 km away
Before
Earthquakes todayBolivia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000avd6. Read Fri, Oct 2, 2026, 3:05 AM UTC.