Chile earthquakes

M4.2 earthquake 88 km WSW of San Antonio, Chile

A magnitude 4.2 earthquake struck 88 km WSW of San Antonio, Chile on Wed, Apr 28, 2021, 2:34 PM GMT-4 (18:34 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.1 57 km WSW of San Antonio, Chile. This one was a foreshock.

San Antonio 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
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2021-04-28 18:34:12 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
34.025° S, 72.406° 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.

Location uncertainty
About 4.0 km horizontally, 1.7 km in depth
Magnitude uncertainty
±0.23
Depth from
Operator assigned
Station coverage gap
189°, poorly surrounded by stations
Stations used
37

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 19 in the 30 days before it.

After

  1. 4.178 km SW of San Antonio, Chile · 1984 days ago · 23 km deep · 10 km away
  2. 4.1103 km NW of Constitución, Chile · 1979 days ago · 19 km deep · 90 km away
  3. 4.579 km WSW of San Antonio, Chile · 1979 days ago · 10 km deep · 14 km away · felt by 1
  4. 4.332 km W of San Antonio, Chile · 1946 days ago · 31 km deep · 63 km away
  5. 4.354 km WSW of San Antonio, Chile · 1940 days ago · 23 km deep · 39 km away · felt by 3
  6. 5.157 km WSW of San Antonio, Chile · 1940 days ago · 15 km deep · 37 km away · felt by 26
  7. 4.566 km SW of San Antonio, Chile · 1937 days ago · 18 km deep · 24 km away · felt by 2
  8. 4.389 km WSW of San Antonio, Chile · 1934 days ago · 10 km deep · 17 km away · felt by 1

Before

  1. 4.7Near the coast of Libertador O'Higgins, Chile · 1985 days ago · 13 km deep · 3 km away
  2. 4.082 km SW of San Antonio, Chile · 1990 days ago · 10 km deep · 8 km away · felt by 1
  3. 4.187 km SW of San Antonio, Chile · 1990 days ago · 10 km deep · 6 km away
  4. 4.287 km SW of San Antonio, Chile · 1990 days ago · 10 km deep · 7 km away · felt by 1
  5. 4.191 km WSW of San Antonio, Chile · 1990 days ago · 10 km deep · 4 km away
  6. 4.284 km WSW of San Antonio, Chile · 1990 days ago · 10 km deep · 4 km away · felt by 2
  7. 4.184 km WSW of San Antonio, Chile · 1990 days ago · 10 km deep · 4 km away
  8. 4.286 km SW of San Antonio, Chile · 1991 days ago · 10 km deep · 6 km away
  9. 4.484 km SW of San Antonio, Chile · 1991 days ago · 10 km deep · 6 km away · felt by 5
  10. 5.582 km WSW of San Antonio, Chile · 1991 days ago · 13 km deep · 6 km away · felt by 37
  11. 4.479 km SW of San Antonio, Chile · 1992 days ago · 10 km deep · 14 km away
  12. 4.583 km SW of San Antonio, Chile · 1992 days ago · 10 km deep · 7 km away
  13. 4.478 km WSW of San Antonio, Chile · 1994 days ago · 10 km deep · 11 km away · felt by 5
  14. 4.281 km WSW of San Antonio, Chile · 1994 days ago · 10 km deep · 7 km away · felt by 1
  15. 4.281 km WSW of San Antonio, Chile · 1994 days ago · 3 km deep · 7 km away
  16. 5.079 km WSW of San Antonio, Chile · 1994 days ago · 10 km deep · 9 km away · felt by 17
  17. 5.181 km WSW of San Antonio, Chile · 1994 days ago · 10 km deep · 7 km away · felt by 17
  18. 5.285 km WSW of San Antonio, Chile · 1994 days ago · 9 km deep · 5 km away · felt by 23
  19. 5.185 km WSW of San Antonio, Chile · 1994 days ago · 13 km deep · 6 km away · felt by 42

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000dyau. Read Sun, Oct 4, 2026, 7:36 AM UTC.