M4.6 earthquake 36 km SW of Illapel, Chile
A magnitude 4.6 earthquake struck 36 km SW of Illapel, Chile on Tue, Apr 18, 2017, 9:33 AM GMT-3 (12:33 UTC), 52 km (32 mi) below the surface.
A larger quake followed: M5.7 57 km WNW 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
- 4.6 (mwr), light
- Local time
- UTC
- 2017-04-18 12:33:53 UTC
- Depth
- 51.8 km (32.2 mi), shallow
- Epicenter
- 31.841° S, 71.464° W
- Region
- Chile
- Felt reports
- 4
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
4 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
- 4.6 Mwr
- Nodal plane 1
- Strike 354°, dip 31°, rake 99°
- Nodal plane 2
- Strike 164°, dip 59°, rake 85°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.7 km horizontally, 3.5 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 70°
- Stations used
- 262
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 8 in the 60 days after this one and 8 in the 30 days before it.
After
- 3.794 km W of Illapel, Chile · 3442 days ago · 13 km deep · 66 km away
- 3.969 km NW of Illapel, Chile · 3438 days ago · 28 km deep · 69 km away
- 4.059 km WNW of Illapel, Chile · 3427 days ago · 13 km deep · 50 km away
- 4.556 km SW of Illapel, Chile · 3421 days ago · 43 km deep · 22 km away
- 4.368 km WSW of Illapel, Chile · 3421 days ago · 65 km deep · 33 km away · felt by 1
- 4.167 km WNW of La Ligua, Chile · 3408 days ago · 33 km deep · 50 km away · felt by 1
- 5.757 km WNW of Illapel, Chile · 3394 days ago · 27 km deep · 47 km away · felt by 155
- 4.059 km WNW of Illapel, Chile · 3394 days ago · 34 km deep · 48 km away
Before
- 4.580 km WNW of La Ligua, Chile · 3450 days ago · 16 km deep · 52 km away
- 4.033 km SSW of Salamanca, Chile · 3452 days ago · 100 km deep · 37 km away
- 4.166 km W of Illapel, Chile · 3453 days ago · 58 km deep · 39 km away
- 5.455 km SW of Ovalle, Chile · 3454 days ago · 38 km deep · 93 km away · felt by 14
- 4.168 km SW of Ovalle, Chile · 3475 days ago · 36 km deep · 84 km away
- 3.766 km NW of Illapel, Chile · 3477 days ago · 41 km deep · 78 km away
- 4.084 km WNW of La Ligua, Chile · 3477 days ago · 10 km deep · 66 km away
- 4.091 km WNW of La Ligua, Chile · 3477 days ago · 18 km deep · 73 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10008ikb. Read Sun, Sep 27, 2026, 10:55 AM UTC.