M4.2 earthquake 39 km S of Tocopilla, Chile
A magnitude 4.2 earthquake struck 39 km S of Tocopilla, Chile on Wed, Jul 28, 2021, 12:44 AM GMT-4 (04:44 UTC), 65 km (40 mi) below the surface.
A larger quake followed: M4.7 47 km SSW of Tocopilla, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-07-28 04:44:21 UTC
- Depth
- 65.0 km (40.4 mi), shallow
- Epicenter
- 22.442° S, 70.249° W
- Region
- Chile
- Felt reports
- 1
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
1 person reported to the USGS what they felt; the strongest reported shaking was I, not felt shaking.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.2 km horizontally, 5.1 km in depth
- Magnitude uncertainty
- ±0.17
- Depth from
- From location
- Station coverage gap
- 176°
- Stations used
- 29
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000ezpx. Read Sun, Oct 4, 2026, 12:34 PM UTC.