Chile earthquakes

M4.3 earthquake 51 km W of Valparaíso, Chile

A magnitude 4.3 earthquake struck 51 km W of Valparaíso, Chile on Mon, Sep 28, 2015, 11:56 PM GMT-3 (02:56 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M4.6 Off the coast of Valparaiso, Chile. This one was a foreshock.

Valparaíso 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
4.3 (mwr), light
Local time
UTC
2015-09-29 02:56:33 UTC
Depth
18.6 km (11.6 mi), shallow
Epicenter
33.020° S, 72.185° 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 II, weak 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
Normal
Moment magnitude
4.3 Mwr
Nodal plane 1
Strike 327°, dip 23°, rake -115°
Nodal plane 2
Strike 174°, dip 69°, rake -80°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 3.0 km horizontally, 3.8 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
149°
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: 13 in the 60 days after this one and 58 in the 30 days before it.

After

  1. 4.145 km W of Valparaíso, Chile · 4011 days ago · 23 km deep · 7 km away · felt by 1
  2. 4.6Off the coast of Valparaiso, Chile · 4011 days ago · 15 km deep · 1 km away · felt by 1
  3. 4.553 km WNW of Valparaíso, Chile · 4009 days ago · 10 km deep · 26 km away
  4. 4.148 km WNW of Valparaíso, Chile · 4009 days ago · 13 km deep · 26 km away
  5. 4.336 km SW of San Antonio, Chile · 4007 days ago · 36 km deep · 90 km away · felt by 1
  6. 4.054 km WNW of Valparaíso, Chile · 4007 days ago · 14 km deep · 23 km away · felt by 1
  7. 4.387 km WNW of La Ligua, Chile · 4007 days ago · 6 km deep · 87 km away
  8. 4.272 km WNW of Cartagena, Chile · 3998 days ago · 20 km deep · 45 km away
  9. 4.4102 km WNW of Cartagena, Chile · 3996 days ago · 10 km deep · 60 km away
  10. 4.579 km W of La Ligua, Chile · 3987 days ago · 10 km deep · 72 km away
  11. 4.429 km N of Valparaíso, Chile · 3983 days ago · 27 km deep · 56 km away
  12. 4.181 km WNW of Cartagena, Chile · 3972 days ago · 17 km deep · 41 km away
  13. 4.442 km NNW of Valparaíso, Chile · 3967 days ago · 19 km deep · 50 km away

Before

  1. 4.375 km WNW of Valparaíso, Chile · 4014 days ago · 10 km deep · 26 km away
  2. 4.295 km W of La Ligua, Chile · 4015 days ago · 6 km deep · 80 km away
  3. 4.2104 km NW of Valparaíso, Chile · 4015 days ago · 14 km deep · 81 km away
  4. 4.498 km W of La Ligua, Chile · 4015 days ago · 10 km deep · 80 km away · felt by 1
  5. 4.7Off the coast of Valparaiso, Chile · 4016 days ago · 10 km deep · 84 km away
  6. 4.397 km NW of Valparaíso, Chile · 4017 days ago · 10 km deep · 72 km away
  7. 4.063 km WNW of La Ligua, Chile · 4017 days ago · 16 km deep · 86 km away
  8. 4.1109 km WNW of La Ligua, Chile · 4018 days ago · 10 km deep · 93 km away
  9. 4.326 km SSE of Villa Alemana, Chile · 4018 days ago · 49 km deep · 87 km away · felt by 2
  10. 4.4Off the coast of Valparaiso, Chile · 4018 days ago · 16 km deep · 95 km away · felt by 8
  11. 3.993 km WNW of La Ligua, Chile · 4018 days ago · 16 km deep · 99 km away
  12. 4.8110 km WNW of La Ligua, Chile · 4018 days ago · 10 km deep · 98 km away
  13. 4.488 km WNW of La Ligua, Chile · 4018 days ago · 16 km deep · 96 km away
  14. 4.448 km W of Valparaíso, Chile · 4018 days ago · 12 km deep · 6 km away · felt by 1
  15. 4.2106 km WNW of La Ligua, Chile · 4019 days ago · 10 km deep · 95 km away
  16. 4.792 km NW of Valparaíso, Chile · 4019 days ago · 10 km deep · 71 km away · felt by 1
  17. 4.298 km NW of Valparaíso, Chile · 4019 days ago · 29 km deep · 69 km away
  18. 4.040 km W of Valparaíso, Chile · 4019 days ago · 17 km deep · 12 km away
  19. 4.474 km WNW of La Ligua, Chile · 4019 days ago · 8 km deep · 85 km away
  20. 4.480 km W of La Ligua, Chile · 4020 days ago · 6 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10003ipn. Read Tue, Sep 22, 2026, 8:02 AM UTC.