M4.3 earthquake 30 km W of Valparaíso, Chile
A magnitude 4.3 earthquake struck 30 km W of Valparaíso, Chile on Sat, Jul 22, 2017, 3:44 AM GMT-4 (07:44 UTC), 23 km (14 mi) below the surface.
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
- 2017-07-22 07:44:25 UTC
- Depth
- 22.9 km (14.3 mi), shallow
- Epicenter
- 33.052° S, 71.953° W
- Region
- Chile
- Felt reports
- 32
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
32 people reported to the USGS what they felt; the strongest reported shaking was V, moderate 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 353°, dip 18°, rake 83°
- Nodal plane 2
- Strike 181°, dip 72°, rake 92°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.1 km horizontally, 6.3 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 151°
- Stations used
- 44
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.340 km W of Valparaíso, Chile · 3353 days ago · 18 km deep · 11 km away · felt by 17
- 4.330 km WNW of Hacienda La Calera, Chile · 3324 days ago · 28 km deep · 59 km away
- 4.250 km W of Valparaíso, Chile · 3317 days ago · 18 km deep · 20 km away · felt by 31
- 4.058 km W of Valparaíso, Chile · 3310 days ago · 16 km deep · 29 km away
Before
- 5.485 km W of San Antonio, Chile · 3362 days ago · 10 km deep · 91 km away · felt by 17
- 4.695 km W of San Antonio, Chile · 3362 days ago · 12 km deep · 97 km away · felt by 4
- 4.143 km NNW of Valparaíso, Chile · 3366 days ago · 18 km deep · 38 km away
- 4.067 km W of San Antonio, Chile · 3370 days ago · 9 km deep · 81 km away · felt by 5
- 4.960 km WSW of San Antonio, Chile · 3370 days ago · 13 km deep · 80 km away · felt by 33
- 4.442 km W of Valparaíso, Chile · 3375 days ago · 21 km deep · 13 km away · felt by 12
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us20009zn9. Read Sun, Sep 27, 2026, 5:52 PM UTC.