M4.1 earthquake 99 km W of Illapel, Chile
A magnitude 4.1 earthquake struck 99 km W of Illapel, Chile on Fri, Sep 29, 2017, 7:36 PM GMT-3 (22:36 UTC), 39 km (24 mi) below the surface.
A larger quake followed: M4.7 143 km NW of Valparaíso, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb), light
- Local time
- UTC
- 2017-09-29 22:36:29 UTC
- Depth
- 39.1 km (24.3 mi), shallow
- Epicenter
- 31.701° S, 72.212° W
- Region
- Chile
- Felt reports
- 6
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
6 people reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.5 km horizontally, 18.1 km in depth
- Magnitude uncertainty
- ±0.26
- Depth from
- From location
- Station coverage gap
- 178°
- Stations used
- 48
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 8 in the 30 days before it.
After
- 4.161 km W of La Ligua, Chile · 3274 days ago · 20 km deep · 93 km away · felt by 103
- 4.178 km SW of Ovalle, Chile · 3268 days ago · 21 km deep · 79 km away · felt by 3
- 4.7143 km NW of Valparaíso, Chile · 3266 days ago · 10 km deep · 84 km away · felt by 127
- 4.356 km SSW of Ovalle, Chile · 3251 days ago · 57 km deep · 100 km away · felt by 2
- 4.257 km SW of Ovalle, Chile · 3247 days ago · 56 km deep · 98 km away
- 3.763 km NW of Illapel, Chile · 3244 days ago · 35 km deep · 87 km away
Before
- 4.3103 km W of Illapel, Chile · 3284 days ago · 14 km deep · 9 km away · felt by 21
- 4.0Off the coast of Coquimbo, Chile · 3291 days ago · 10 km deep · 9 km away
- 4.5124 km W of Illapel, Chile · 3291 days ago · 10 km deep · 26 km away · felt by 5
- 4.2113 km W of Illapel, Chile · 3292 days ago · 10 km deep · 18 km away · felt by 1
- 3.9118 km W of Illapel, Chile · 3292 days ago · 10 km deep · 19 km away
- 4.396 km W of Illapel, Chile · 3293 days ago · 10 km deep · 12 km away
- 4.3102 km WSW of Illapel, Chile · 3293 days ago · 10 km deep · 16 km away
- 5.993 km WSW of Illapel, Chile · 3293 days ago · 17 km deep · 16 km away · felt by 115
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000awzq. Read Thu, Sep 24, 2026, 4:54 AM UTC.