M4.4 earthquake 46 km ENE of Tocopilla, Chile
A magnitude 4.4 earthquake struck 46 km ENE of Tocopilla, Chile on Sat, Oct 28, 2023, 4:17 PM GMT-3 (19:17 UTC), 71 km (44 mi) below the surface.
A larger quake followed: M5.6 21 km N 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
- 4.4 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2023-10-28 19:17:37 UTC
- Depth
- 70.6 km (43.9 mi), intermediate-depth
- Epicenter
- 21.907° S, 69.792° 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 III, weak shaking.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Normal
- Moment magnitude
- 4.4 Mwr
- Nodal plane 1
- Strike 341°, dip 54°, rake -102°
- Nodal plane 2
- Strike 180°, dip 38°, rake -74°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.7 km horizontally, 4.4 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- From location
- Station coverage gap
- 134°
- Stations used
- 75
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 1 in the 30 days before it.
After
- 4.1100 km S of La Tirana, Chile · 1046 days ago · 49 km deep · 75 km away
- 5.621 km N of Tocopilla, Chile · 1018 days ago · 62 km deep · 38 km away · felt by 21
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000l78j. Read Sun, Oct 4, 2026, 7:08 PM UTC.