Chile earthquakes

M4.7 earthquake 86 km WNW of Copiapó, Chile

A magnitude 4.7 earthquake struck 86 km WNW of Copiapó, Chile on Tue, Jul 31, 1973, 9:34 AM GMT-4 (13:34 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M6.3 83 km NW of Copiapó, Chile. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
4.7 (mb), light
Local time
UTC
1973-07-31 13:34:07 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
27.055° S, 71.134° 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
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.7 and up: 25 in the 60 days after this one and 53 in the 30 days before it.

After

  1. 5.149 km WSW of Diego de Almagro, Chile · 19418 days ago · 33 km deep · 84 km away
  2. 4.9102 km NW of Copiapó, Chile · 19417 days ago · 33 km deep · 30 km away
  3. 5.275 km WNW of Copiapó, Chile · 19417 days ago · 33 km deep · 13 km away
  4. 5.288 km WNW of Copiapó, Chile · 19417 days ago · 33 km deep · 9 km away
  5. 4.788 km NW of Copiapó, Chile · 19417 days ago · 33 km deep · 19 km away
  6. 5.789 km NW of Copiapó, Chile · 19417 days ago · 16 km deep · 29 km away
  7. 4.185 km WNW of Copiapó, Chile · 19416 days ago · 33 km deep · 9 km away
  8. 4.599 km NW of Copiapó, Chile · 19412 days ago · 19 km deep · 30 km away
  9. 4.695 km NW of Copiapó, Chile · 19412 days ago · 33 km deep · 25 km away
  10. 6.184 km NW of Copiapó, Chile · 19411 days ago · 25 km deep · 40 km away
  11. 4.691 km NW of Copiapó, Chile · 19411 days ago · 34 km deep · 25 km away
  12. 4.080 km NW of Copiapó, Chile · 19411 days ago · 38 km deep · 36 km away
  13. 5.989 km NW of Copiapó, Chile · 19411 days ago · 34 km deep · 43 km away
  14. 5.184 km NW of Copiapó, Chile · 19411 days ago · 13 km deep · 38 km away
  15. 4.384 km NW of Copiapó, Chile · 19411 days ago · 36 km deep · 40 km away
  16. 4.998 km WSW of Diego de Almagro, Chile · 19411 days ago · 19 km deep · 45 km away
  17. 6.383 km NW of Copiapó, Chile · 19411 days ago · 14 km deep · 33 km away
  18. 4.387 km W of Diego de Almagro, Chile · 19410 days ago · 33 km deep · 78 km away
  19. 4.591 km WSW of Diego de Almagro, Chile · 19410 days ago · 17 km deep · 46 km away
  20. 5.782 km WSW of Diego de Almagro, Chile · 19404 days ago · 29 km deep · 57 km away
  21. 4.961 km WSW of Diego de Almagro, Chile · 19404 days ago · 25 km deep · 71 km away
  22. 4.883 km WSW of Diego de Almagro, Chile · 19404 days ago · 28 km deep · 61 km away
  23. 3.951 km NW of Copiapó, Chile · 19393 days ago · 33 km deep · 50 km away
  24. 5.083 km NW of Copiapó, Chile · 19369 days ago · 33 km deep · 25 km away
  25. 5.273 km WNW of Copiapó, Chile · 19363 days ago · 33 km deep · 15 km away

Before

  1. 5.387 km NW of Copiapó, Chile · 19418 days ago · 33 km deep · 38 km away
  2. 4.695 km NW of Copiapó, Chile · 19418 days ago · 33 km deep · 26 km away
  3. 5.184 km NW of Copiapó, Chile · 19418 days ago · 33 km deep · 40 km away
  4. 4.692 km NW of Copiapó, Chile · 19418 days ago · 33 km deep · 18 km away
  5. 6.3120 km WNW of Copiapó, Chile · 19418 days ago · 33 km deep · 38 km away
  6. 4.097 km WNW of Copiapó, Chile · 19422 days ago · 33 km deep · 16 km away
  7. 5.287 km WNW of Copiapó, Chile · 19423 days ago · 33 km deep · 3 km away
  8. 4.8105 km NW of Copiapó, Chile · 19435 days ago · 35 km deep · 31 km away
  9. 4.896 km WNW of Copiapó, Chile · 19436 days ago · 33 km deep · 10 km away
  10. 4.9105 km WNW of Copiapó, Chile · 19436 days ago · 33 km deep · 25 km away
  11. 4.291 km WNW of Copiapó, Chile · 19437 days ago · 31 km deep · 11 km away
  12. 5.186 km WNW of Copiapó, Chile · 19437 days ago · 33 km deep · 9 km away
  13. 5.4111 km W of Copiapó, Chile · 19437 days ago · 15 km deep · 38 km away
  14. 4.280 km NW of Copiapó, Chile · 19437 days ago · 33 km deep · 43 km away
  15. 5.594 km WNW of Copiapó, Chile · 19437 days ago · 20 km deep · 9 km away
  16. 4.767 km WSW of Diego de Almagro, Chile · 19438 days ago · 35 km deep · 66 km away
  17. 5.579 km WNW of Copiapó, Chile · 19438 days ago · 33 km deep · 10 km away
  18. 4.288 km WNW of Copiapó, Chile · 19439 days ago · 28 km deep · 2 km away
  19. 5.491 km WNW of Copiapó, Chile · 19439 days ago · 22 km deep · 6 km away
  20. 3.496 km NW of Copiapó, Chile · 19439 days ago · 25 km deep · 21 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00002xw. Read Tue, Sep 29, 2026, 8:47 AM UTC.