M4.4 earthquake 6 km SSW of Coquimbo, Chile
A magnitude 4.4 earthquake struck 6 km SSW of Coquimbo, Chile on Mon, Oct 9, 2017, 7:55 PM GMT-3 (22:55 UTC), 51 km (32 mi) below the surface.
A larger quake followed: M4.9 23 km WSW 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
- 4.4 (mwr), light
- Local time
- UTC
- 2017-10-09 22:55:52 UTC
- Depth
- 51.3 km (31.9 mi), shallow
- Epicenter
- 30.010° S, 71.365° W
- Region
- Chile
- Felt reports
- 8
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
8 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.
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
- 4.4 Mwr
- Nodal plane 1
- Strike 165°, dip 44°, rake 66°
- Nodal plane 2
- Strike 17°, dip 51°, rake 112°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.4 km horizontally, 5.2 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 88°
- Stations used
- 90
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.411 km WSW of Ovalle, Chile · 3262 days ago · 50 km deep · 71 km away
- 4.3101 km WSW of Coquimbo, Chile · 3259 days ago · 8 km deep · 96 km away · felt by 2
- 4.093 km WSW of Coquimbo, Chile · 3256 days ago · 10 km deep · 89 km away
- 4.271 km W of Ovalle, Chile · 3254 days ago · 18 km deep · 82 km away
- 4.236 km WSW of Ovalle, Chile · 3249 days ago · 43 km deep · 80 km away
- 4.467 km WSW of Coquimbo, Chile · 3244 days ago · 13 km deep · 64 km away
- 4.552 km NNW of La Serena, Chile · 3243 days ago · 37 km deep · 63 km away · felt by 14
- 4.923 km WSW of Ovalle, Chile · 3241 days ago · 45 km deep · 77 km away · felt by 27
- 4.144 km SW of Coquimbo, Chile · 3230 days ago · 36 km deep · 38 km away
- 4.368 km W of Coquimbo, Chile · 3212 days ago · 22 km deep · 67 km away
- 4.470 km W of Coquimbo, Chile · 3212 days ago · 27 km deep · 69 km away
Before
- 3.98 km NNW of Coquimbo, Chile · 3275 days ago · 51 km deep · 14 km away
- 4.221 km WSW of Ovalle, Chile · 3277 days ago · 43 km deep · 76 km away
- 4.435 km W of Coquimbo, Chile · 3282 days ago · 24 km deep · 34 km away
- 4.250 km N of La Serena, Chile · 3284 days ago · 39 km deep · 62 km away · felt by 8
- 4.427 km SW of Coquimbo, Chile · 3286 days ago · 37 km deep · 22 km away · felt by 5
- 4.486 km WSW of Coquimbo, Chile · 3293 days ago · 17 km deep · 81 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000b39y. Read Thu, Sep 24, 2026, 10:52 AM UTC.