M4.1 earthquake 103 km W of Arica, Chile
A magnitude 4.1 earthquake struck 103 km W of Arica, Chile on Wed, Mar 18, 2015, 2:56 AM GMT-3 (05:56 UTC), 49 km (30 mi) below the surface.
A larger quake followed: M4.6 95 km SSW of Pacocha, Peru. 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 (mb), light
- Local time
- UTC
- 2015-03-18 05:56:14 UTC
- Depth
- 48.8 km (30.3 mi), shallow
- Epicenter
- 18.587° S, 71.268° 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.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 8.2 km horizontally, 2.2 km in depth
- Magnitude uncertainty
- ±0.21
- Depth from
- FROM_LOCATION
- Station coverage gap
- 132°
- 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: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.695 km SSW of Pacocha, Peru · 4213 days ago · 28 km deep · 48 km away
- 4.031 km WSW of Pacocha, Peru · 4212 days ago · 28 km deep · 97 km away
- 4.051 km WSW of Arica, Chile · 4203 days ago · 40 km deep · 58 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10001nds. Read Wed, Sep 30, 2026, 3:15 PM UTC.