M4.0 earthquake 44 km SW of Ovalle, Chile
A magnitude 4.0 earthquake struck 44 km SW of Ovalle, Chile on Sun, Oct 23, 2016, 3:09 AM GMT-3 (06:09 UTC), 37 km (23 mi) below the surface.
A larger quake followed: M5.2 60 km W of Illapel, 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
- 2016-10-23 06:09:17 UTC
- Depth
- 36.9 km (23.0 mi), shallow
- Epicenter
- 30.875° S, 71.533° 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 161°, dip 56°, rake 69°
- Nodal plane 2
- Strike 15°, dip 39°, rake 118°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.6 km horizontally, 5.9 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 81°
- Stations used
- 81
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 19 in the 60 days after this one and 8 in the 30 days before it.
After
- 4.335 km WNW of Ovalle, Chile · 3622 days ago · 22 km deep · 44 km away
- 3.980 km NW of Illapel, Chile · 3621 days ago · 19 km deep · 50 km away
- 3.948 km WNW of Illapel, Chile · 3618 days ago · 42 km deep · 71 km away
- 4.241 km W of Illapel, Chile · 3607 days ago · 48 km deep · 91 km away
- 4.4Near the coast of Coquimbo, Chile · 3606 days ago · 29 km deep · 96 km away
- 4.395 km WSW of Coquimbo, Chile · 3594 days ago · 11 km deep · 91 km away
- 4.5100 km WSW of Coquimbo, Chile · 3594 days ago · 10 km deep · 96 km away · felt by 1
- 4.447 km SW of Ovalle, Chile · 3588 days ago · 51 km deep · 3 km away · felt by 1
- 4.470 km W of Illapel, Chile · 3582 days ago · 10 km deep · 91 km away
- 5.260 km W of Illapel, Chile · 3582 days ago · 41 km deep · 79 km away · felt by 16
- 4.949 km WNW of Illapel, Chile · 3582 days ago · 34 km deep · 69 km away
- 4.445 km WNW of Illapel, Chile · 3581 days ago · 52 km deep · 73 km away
- 4.843 km SSW of Ovalle, Chile · 3579 days ago · 50 km deep · 12 km away · felt by 7
- 4.144 km WNW of Ovalle, Chile · 3577 days ago · 31 km deep · 49 km away
- 5.244 km WNW of Ovalle, Chile · 3574 days ago · 36 km deep · 51 km away · felt by 5
- 4.053 km WNW of Ovalle, Chile · 3574 days ago · 35 km deep · 57 km away
- 4.140 km SSW of Coquimbo, Chile · 3573 days ago · 34 km deep · 69 km away
- 4.013 km SW of Illapel, Chile · 3572 days ago · 54 km deep · 99 km away
- 4.932 km SW of Ovalle, Chile · 3571 days ago · 35 km deep · 13 km away · felt by 2
Before
- 4.329 km WSW of Ovalle, Chile · 3630 days ago · 42 km deep · 19 km away
- 4.238 km W of Ovalle, Chile · 3635 days ago · 32 km deep · 29 km away
- 4.933 km WSW of Ovalle, Chile · 3640 days ago · 38 km deep · 20 km away
- 4.088 km WNW of Ovalle, Chile · 3641 days ago · 18 km deep · 74 km away
- 4.647 km SSW of Ovalle, Chile · 3644 days ago · 67 km deep · 18 km away
- 4.012 km ENE of Ovalle, Chile · 3645 days ago · 83 km deep · 57 km away
- 4.026 km WSW of Ovalle, Chile · 3646 days ago · 40 km deep · 23 km away
- 4.660 km SW of Coquimbo, Chile · 3657 days ago · 30 km deep · 64 km away · felt by 1
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us20007g6q. Read Tue, Sep 29, 2026, 2:57 PM UTC.