M5.1 earthquake 145 km WNW of Coquimbo, Chile
A magnitude 5.1 earthquake struck 145 km WNW of Coquimbo, Chile on Wed, Feb 7, 2018, 9:36 AM GMT-3 (12:36 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (Mww, W-phase moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-02-07 12:36:18 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 29.247° S, 72.604° W
- Region
- Chile
- Felt reports
- 8
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 5.1 | Mww, W-phase moment | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.047 · 44 stations |
| 5.09 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 4.9 | Mwr, regional moment | USGS National Earthquake Information Center | Moment tensor · Reviewed |
Did you feel it?
8 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Normal
- Moment magnitude
- 5.1 Mww
- Nodal plane 1
- Strike 199°, dip 44°, rake -102°
- Nodal plane 2
- Strike 35°, dip 47°, rake -79°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.6 km horizontally, 1.7 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- Operator assigned
- Station coverage gap
- 72°
- Stations used
- 132
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 4 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.3154 km NW of Coquimbo, Chile · 3150 days ago · 10 km deep · 9 km away
- 4.0160 km WNW of Coquimbo, Chile · 3149 days ago · 10 km deep · 16 km away
- 4.4176 km WNW of Coquimbo, Chile · 3144 days ago · 10 km deep · 31 km away
- 4.3176 km WNW of Coquimbo, Chile · 3144 days ago · 10 km deep · 31 km away
Before
- 4.189 km NW of Coquimbo, Chile · 3163 days ago · 38 km deep · 63 km away
- 5.2118 km WSW of Vallenar, Chile · 3180 days ago · 35 km deep · 76 km away · felt by 9
- 4.6179 km W of Vallenar, Chile · 3182 days ago · 10 km deep · 94 km away
- 4.4110 km W of Vallenar, Chile · 3186 days ago · 22 km deep · 92 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000ci7u (also filed as iscgem611681321). Read Mon, Oct 5, 2026, 3:27 AM UTC.