M4.0 earthquake 94 km NW of Coquimbo, Chile
A magnitude 4.0 earthquake struck 94 km NW of Coquimbo, Chile on Fri, Aug 10, 2018, 7:04 AM GMT-4 (11:04 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.3 93 km W of Vallenar, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mwr), light
- Local time
- UTC
- 2018-08-10 11:04:21 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 29.336° S, 72.012° 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
- Reverse (thrust)
- Moment magnitude
- 4.0 Mwr
- Nodal plane 1
- Strike 14°, dip 49°, rake 88°
- Nodal plane 2
- Strike 198°, dip 42°, rake 93°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.1 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- Operator assigned
- Station coverage gap
- 98°
- Stations used
- 68
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.2102 km W of Vallenar, Chile · 2973 days ago · 11 km deep · 69 km away
- 4.125 km NNW of La Serena, Chile · 2972 days ago · 45 km deep · 74 km away
- 4.427 km WSW of Coquimbo, Chile · 2967 days ago · 35 km deep · 94 km away
- 5.032 km NW of Coquimbo, Chile · 2957 days ago · 55 km deep · 62 km away · felt by 14
- 5.226 km NNW of La Serena, Chile · 2956 days ago · 35 km deep · 74 km away · felt by 18
- 4.029 km NNW of La Serena, Chile · 2955 days ago · 34 km deep · 69 km away
- 4.092 km SW of Vallenar, Chile · 2952 days ago · 11 km deep · 56 km away
- 4.660 km NNW of La Serena, Chile · 2951 days ago · 45 km deep · 61 km away · felt by 2
- 5.393 km W of Vallenar, Chile · 2943 days ago · 35 km deep · 73 km away · felt by 3
- 4.141 km W of Coquimbo, Chile · 2924 days ago · 23 km deep · 77 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000g6a3. Read Wed, Sep 30, 2026, 11:12 PM UTC.