Chile earthquakes

M4.0 earthquake 55 km W of Valparaíso, Chile

A magnitude 4.0 earthquake struck 55 km W of Valparaíso, Chile on Mon, Oct 8, 1973, 1:07 AM GMT-3 (04:07 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.5 40 km SW of Valparaíso, 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
4.0 (mb), light
Local time
UTC
1973-10-08 04:07:34 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
33.070° S, 72.220° W
Region
Chile
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Depth from
OPERATOR_ASSIGNED
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 28 in the 30 days before it.

After

  1. 4.540 km SW of Valparaíso, Chile · 19340 days ago · 46 km deep · 30 km away
  2. 5.134 km WSW of Valparaíso, Chile · 19338 days ago · 29 km deep · 22 km away
  3. 4.933 km SW of Valparaíso, Chile · 19330 days ago · 38 km deep · 34 km away
  4. 4.147 km NW of Valparaíso, Chile · 19323 days ago · 27 km deep · 44 km away
  5. 4.544 km W of Valparaíso, Chile · 19319 days ago · 24 km deep · 11 km away
  6. 4.857 km NNW of Valparaíso, Chile · 19311 days ago · 33 km deep · 67 km away
  7. 3.948 km WSW of Valparaíso, Chile · 19302 days ago · 24 km deep · 15 km away
  8. 4.831 km SW of Valparaíso, Chile · 19302 days ago · 33 km deep · 39 km away

Before

  1. 4.259 km WSW of Valparaíso, Chile · 19344 days ago · 33 km deep · 14 km away
  2. 4.348 km WSW of Valparaíso, Chile · 19344 days ago · 33 km deep · 21 km away
  3. 5.045 km W of Valparaíso, Chile · 19344 days ago · 21 km deep · 9 km away
  4. 4.624 km WNW of Valparaíso, Chile · 19344 days ago · 33 km deep · 35 km away
  5. 4.741 km WSW of Valparaíso, Chile · 19344 days ago · 35 km deep · 17 km away
  6. 4.942 km W of Valparaíso, Chile · 19345 days ago · 29 km deep · 13 km away
  7. 4.845 km WSW of Valparaíso, Chile · 19345 days ago · 23 km deep · 17 km away
  8. 4.554 km WSW of Valparaíso, Chile · 19345 days ago · 33 km deep · 10 km away
  9. 4.435 km WSW of Valparaíso, Chile · 19345 days ago · 33 km deep · 21 km away
  10. 4.453 km W of Valparaíso, Chile · 19345 days ago · 33 km deep · 4 km away
  11. 4.543 km NNW of Valparaíso, Chile · 19345 days ago · 33 km deep · 54 km away
  12. 4.458 km W of Cartagena, Chile · 19345 days ago · 33 km deep · 44 km away
  13. 4.7Off the coast of Valparaiso, Chile · 19345 days ago · 33 km deep · 21 km away
  14. 4.335 km WSW of Valparaíso, Chile · 19345 days ago · 33 km deep · 22 km away
  15. 4.444 km W of Valparaíso, Chile · 19345 days ago · 33 km deep · 12 km away
  16. 4.543 km WSW of Valparaíso, Chile · 19345 days ago · 33 km deep · 19 km away
  17. 4.639 km WNW of Valparaíso, Chile · 19345 days ago · 33 km deep · 27 km away
  18. 4.05 km NW of Cartagena, Chile · 19345 days ago · 84 km deep · 73 km away
  19. 4.838 km WSW of Valparaíso, Chile · 19345 days ago · 39 km deep · 19 km away
  20. 5.625 km WNW of Valparaíso, Chile · 19345 days ago · 24 km deep · 35 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00003rg. Read Tue, Sep 22, 2026, 10:51 AM UTC.