M4.1 earthquake 49 km SSW of Calama, Chile
A magnitude 4.1 earthquake struck 49 km SSW of Calama, Chile on Tue, Sep 23, 2025, 1:31 PM GMT-3 (16:31 UTC), 85 km (53 mi) below the surface.
A larger quake followed: M4.7 39 km N of Calama, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2025-09-23 16:31:01 UTC
- Depth
- 84.8 km (52.7 mi), intermediate-depth
- Epicenter
- 22.834° S, 69.176° W
- Region
- Chile
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
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
- 4.1 Mwr
- Nodal plane 1
- Strike 335°, dip 80°, rake -85°
- Nodal plane 2
- Strike 131°, dip 11°, rake -114°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.0 km horizontally, 3.3 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 89°
- Stations used
- 37
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.739 km N of Calama, Chile · 372 days ago · 102 km deep · 83 km away
- 4.341 km N of Calama, Chile · 372 days ago · 103 km deep · 86 km away
- 4.251 km NNE of Calama, Chile · 367 days ago · 108 km deep · 100 km away
- 4.662 km SW of San Pedro de Atacama, Chile · 338 days ago · 99 km deep · 86 km away
- 4.135 km WSW of San Pedro de Atacama, Chile · 338 days ago · 108 km deep · 74 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000rccs. Read Thu, Oct 1, 2026, 7:25 AM UTC.