M4.0 earthquake 59 km SW of Arica, Chile
A magnitude 4.0 earthquake struck 59 km SW of Arica, Chile on Fri, Mar 4, 2016, 9:28 AM GMT-3 (12:28 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M4.7 15 km WSW of Tacna, Peru. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mb), light
- Local time
- UTC
- 2016-03-04 12:28:14 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 18.917° S, 70.618° 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 6.5 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.21
- Depth from
- Operator assigned
- Station coverage gap
- 142°
- Stations used
- 38
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
- 4.715 km WSW of Tacna, Peru · 3860 days ago · 99 km deep · 96 km away
- 4.0Tarapaca, Chile · 3856 days ago · 98 km deep · 98 km away
- 4.088 km NW of Iquique, Chile · 3842 days ago · 38 km deep · 87 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10004un1. Read Wed, Sep 30, 2026, 10:23 PM UTC.