Chile earthquakes

M3.9 earthquake 48 km WSW of Valparaíso, Chile

A magnitude 3.9 earthquake struck 48 km WSW of Valparaíso, Chile on Sat, Apr 29, 2017, 1:50 AM GMT-3 (04:50 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M5.2 39 km WNW of Valparaíso, Chile. This one was a foreshock.

El Quisco forecastMore in Chile

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.9 (mwr), minor
Local time
UTC
2017-04-29 04:50:34 UTC
Depth
22.3 km (13.9 mi), shallow
Epicenter
33.242° S, 72.084° W
Region
Chile
Felt reports
1
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was V, moderate shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

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
3.9 Mwr
Nodal plane 1
Strike 144°, dip 81°, rake 74°
Nodal plane 2
Strike 25°, dip 18°, rake 150°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.0 km horizontally, 6.8 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
193°, poorly surrounded by stations
Stations used
41

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 138 in the 30 days before it.

After

  1. 4.247 km WSW of Valparaíso, Chile · 3441 days ago · 21 km deep · 3 km away · felt by 2
  2. 4.251 km WSW of Valparaíso, Chile · 3441 days ago · 20 km deep · 5 km away
  3. 3.961 km W of Valparaíso, Chile · 3439 days ago · 16 km deep · 34 km away
  4. 4.154 km W of Valparaíso, Chile · 3438 days ago · 17 km deep · 27 km away · felt by 3
  5. 4.257 km W of Valparaíso, Chile · 3438 days ago · 13 km deep · 26 km away
  6. 4.460 km W of Valparaíso, Chile · 3436 days ago · 18 km deep · 26 km away · felt by 2
  7. 3.971 km W of Valparaíso, Chile · 3435 days ago · 8 km deep · 46 km away
  8. 3.9Off the coast of Valparaiso, Chile · 3431 days ago · 20 km deep · 60 km away
  9. 5.239 km WNW of Valparaíso, Chile · 3426 days ago · 15 km deep · 35 km away · felt by 12
  10. 4.311 km S of Valparaíso, Chile · 3426 days ago · 31 km deep · 43 km away · felt by 2
  11. 4.262 km W of Valparaíso, Chile · 3424 days ago · 13 km deep · 36 km away
  12. 4.273 km W of Valparaíso, Chile · 3422 days ago · 12 km deep · 39 km away · felt by 1
  13. 4.151 km WNW of Valparaíso, Chile · 3417 days ago · 16 km deep · 37 km away · felt by 1
  14. 3.949 km WNW of Valparaíso, Chile · 3410 days ago · 17 km deep · 34 km away · felt by 3
  15. 4.262 km W of Valparaíso, Chile · 3410 days ago · 18 km deep · 39 km away
  16. 4.558 km W of Valparaíso, Chile · 3398 days ago · 10 km deep · 26 km away · felt by 7
  17. 4.321 km W of Valparaíso, Chile · 3397 days ago · 26 km deep · 28 km away · felt by 15

Before

  1. 3.817 km SW of Valparaíso, Chile · 3441 days ago · 22 km deep · 31 km away
  2. 5.136 km WSW of Valparaíso, Chile · 3441 days ago · 19 km deep · 12 km away · felt by 25
  3. 4.444 km WSW of Valparaíso, Chile · 3441 days ago · 20 km deep · 3 km away · felt by 1
  4. 4.439 km WNW of Cartagena, Chile · 3441 days ago · 20 km deep · 18 km away · felt by 1
  5. 3.864 km WSW of Valparaíso, Chile · 3441 days ago · 21 km deep · 20 km away
  6. 4.138 km WSW of Valparaíso, Chile · 3441 days ago · 22 km deep · 10 km away · felt by 1
  7. 3.850 km WSW of Valparaíso, Chile · 3441 days ago · 23 km deep · 2 km away · felt by 1
  8. 4.239 km SW of Valparaíso, Chile · 3441 days ago · 26 km deep · 14 km away · felt by 2
  9. 4.145 km WNW of Cartagena, Chile · 3441 days ago · 20 km deep · 13 km away · felt by 2
  10. 5.340 km SW of Valparaíso, Chile · 3441 days ago · 18 km deep · 13 km away · felt by 10
  11. 4.551 km WSW of Valparaíso, Chile · 3441 days ago · 19 km deep · 5 km away · felt by 1
  12. 3.750 km WNW of Cartagena, Chile · 3441 days ago · 20 km deep · 8 km away · felt by 1
  13. 4.244 km WSW of Valparaíso, Chile · 3441 days ago · 22 km deep · 5 km away
  14. 4.651 km WSW of Valparaíso, Chile · 3441 days ago · 22 km deep · 7 km away · felt by 1
  15. 4.347 km WSW of Valparaíso, Chile · 3441 days ago · 20 km deep · 3 km away · felt by 1
  16. 4.639 km NW of Cartagena, Chile · 3441 days ago · 24 km deep · 16 km away · felt by 1
  17. 3.639 km WSW of Valparaíso, Chile · 3441 days ago · 23 km deep · 8 km away
  18. 4.660 km WSW of Valparaíso, Chile · 3441 days ago · 10 km deep · 14 km away · felt by 1
  19. 5.818 km WSW of Valparaíso, Chile · 3441 days ago · 27 km deep · 29 km away · felt by 52
  20. 5.444 km WSW of Valparaíso, Chile · 3441 days ago · 22 km deep · 4 km away · felt by 2

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10008ly3. Read Tue, Sep 29, 2026, 11:48 PM UTC.