M4.0 earthquake 35 km WSW of Arica, Chile
A magnitude 4.0 earthquake struck 35 km WSW of Arica, Chile on Thu, Nov 8, 2018, 8:57 AM GMT-3 (11:57 UTC), 45 km (28 mi) below the surface.
A larger quake followed: M4.3 21 km ESE of Calana, 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-11-08 11:57:30 UTC
- Depth
- 45.0 km (28.0 mi), shallow
- Epicenter
- 18.578° S, 70.619° 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 8.8 km horizontally, 16.0 km in depth
- Magnitude uncertainty
- ±0.26
- Depth from
- From location
- Station coverage gap
- 185°, poorly surrounded by stations
- Stations used
- 28
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.163 km E of Arica, Chile · 2880 days ago · 149 km deep · 99 km away · felt by 2
- 4.321 km ESE of Calana, Peru · 2853 days ago · 130 km deep · 89 km away
- 4.389 km S of Pacocha, Peru · 2851 days ago · 33 km deep · 88 km away
- 4.172 km S of Pacocha, Peru · 2841 days ago · 35 km deep · 71 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000hp8l. Read Sun, Oct 4, 2026, 2:59 PM UTC.