M4.3 earthquake 101 km WSW of Coquimbo, Chile
A magnitude 4.3 earthquake struck 101 km WSW of Coquimbo, Chile on Sun, Oct 22, 2017, 10:54 AM GMT-3 (13:54 UTC), 8 km (5 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
- 4.3 (mwr), light
- Local time
- UTC
- 2017-10-22 13:54:54 UTC
- Depth
- 8.4 km (5.2 mi), shallow
- Epicenter
- 30.348° S, 72.287° W
- Region
- Chile
- Felt reports
- 2
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
2 people reported to the USGS what they felt; the strongest reported shaking was I, not felt 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
- 4.3 Mwr
- Nodal plane 1
- Strike 13°, dip 37°, rake 100°
- Nodal plane 2
- Strike 181°, dip 54°, rake 83°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 2.6 km horizontally, 5.0 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 191°, poorly surrounded by stations
- Stations used
- 36
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 5 in the 30 days before it.
After
- 4.093 km WSW of Coquimbo, Chile · 3262 days ago · 10 km deep · 9 km away
- 4.271 km W of Ovalle, Chile · 3260 days ago · 18 km deep · 40 km away
- 4.2138 km WSW of Coquimbo, Chile · 3258 days ago · 10 km deep · 39 km away
- 4.236 km WSW of Ovalle, Chile · 3255 days ago · 43 km deep · 81 km away
- 4.467 km WSW of Coquimbo, Chile · 3250 days ago · 13 km deep · 36 km away
- 4.923 km WSW of Ovalle, Chile · 3247 days ago · 45 km deep · 92 km away · felt by 27
- 4.2103 km WNW of Coquimbo, Chile · 3239 days ago · 25 km deep · 88 km away
- 4.144 km SW of Coquimbo, Chile · 3236 days ago · 36 km deep · 66 km away
- 4.368 km W of Coquimbo, Chile · 3218 days ago · 22 km deep · 57 km away
- 4.470 km W of Coquimbo, Chile · 3218 days ago · 27 km deep · 56 km away
- 4.249 km W of Ovalle, Chile · 3210 days ago · 36 km deep · 65 km away
Before
- 4.178 km SW of Ovalle, Chile · 3275 days ago · 21 km deep · 95 km away · felt by 3
- 4.46 km SSW of Coquimbo, Chile · 3278 days ago · 51 km deep · 96 km away · felt by 8
- 4.221 km WSW of Ovalle, Chile · 3283 days ago · 43 km deep · 94 km away
- 4.435 km W of Coquimbo, Chile · 3288 days ago · 24 km deep · 72 km away
- 4.427 km SW of Coquimbo, Chile · 3292 days ago · 37 km deep · 75 km away · felt by 5
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000avng. Read Wed, Sep 30, 2026, 2:55 PM UTC.