M4.3 earthquake 40 km SW of Coquimbo, Chile
A magnitude 4.3 earthquake struck 40 km SW of Coquimbo, Chile on Mon, May 21, 2018, 9:44 AM GMT-4 (13:44 UTC), 21 km (13 mi) below the surface.
A larger quake followed: M4.7 50 km WNW of Ovalle, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 2018-05-21 13:44:59 UTC
- Depth
- 21.5 km (13.3 mi), shallow
- Epicenter
- 30.249° S, 71.590° 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 3.9 km horizontally, 9.2 km in depth
- Magnitude uncertainty
- ±0.27
- Depth from
- From location
- Station coverage gap
- 187°, poorly surrounded by stations
- Stations used
- 30
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.340 km NNW of La Serena, Chile · 3027 days ago · 50 km deep · 77 km away
- 4.222 km WSW of Ovalle, Chile · 3022 days ago · 43 km deep · 53 km away
- 4.345 km NW of Ovalle, Chile · 3021 days ago · 29 km deep · 10 km away
- 4.750 km WNW of Ovalle, Chile · 3016 days ago · 30 km deep · 14 km away
- 4.315 km WSW of Ovalle, Chile · 3012 days ago · 35 km deep · 51 km away
- 4.247 km W of Ovalle, Chile · 3007 days ago · 33 km deep · 38 km away
- 4.476 km WSW of Coquimbo, Chile · 3006 days ago · 15 km deep · 43 km away
- 4.140 km SW of Ovalle, Chile · 2997 days ago · 48 km deep · 65 km away
- 4.148 km SW of Ovalle, Chile · 2996 days ago · 44 km deep · 77 km away
Before
- 4.251 km W of Ovalle, Chile · 3054 days ago · 33 km deep · 45 km away
- 4.3101 km W of Ovalle, Chile · 3060 days ago · 10 km deep · 69 km away
- 4.817 km NNW of Coquimbo, Chile · 3069 days ago · 38 km deep · 51 km away · felt by 13
- 4.711 km WSW of Ovalle, Chile · 3077 days ago · 56 km deep · 52 km away · felt by 6
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000e9b8. Read Mon, Sep 28, 2026, 9:15 AM UTC.