M4.1 earthquake 91 km WSW of San Antonio, Chile

Magnitude

4.1 (mb, body-wave), light

Magnitude from

USGS National Earthquake Information Center

Local time

Thu, Apr 22, 2021, 8:47 PM GMT-4

UTC

2021-04-23 00:47:42 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

34.024° S, 72.447° W

Region

Chile

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 3.8 km horizontally, 1.9 km in depth

Magnitude uncertainty

±0.26

Depth from

Operator assigned

Station coverage gap

192°, poorly surrounded by stations

Stations used

29

• San Antonio, ChilePopulation 87,675. Forecast91 kmWSW
• Valparaíso, ChilePopulation 282,448. Forecast133 kmSW
• Santiago, ChilePopulation 4,837,295. Forecast178 kmWSW

After

1. 4.287 km SW of San Antonio, ChileThu, Apr 22, 11:53 PM GMT-4 · 1990 days ago · 10 km deep · 10 km away · felt by 1
2. 4.187 km SW of San Antonio, ChileThu, Apr 22, 11:56 PM GMT-4 · 1990 days ago · 10 km deep · 9 km away
3. 4.082 km SW of San Antonio, ChileFri, Apr 23, 12:13 AM GMT-4 · 1990 days ago · 10 km deep · 12 km away · felt by 1
4. 4.7Near the coast of Libertador O'Higgins, ChileWed, Apr 28, 2:25 PM GMT-4 · 1984 days ago · 13 km deep · 7 km away
5. 4.288 km WSW of San Antonio, ChileWed, Apr 28, 2:34 PM GMT-4 · 1984 days ago · 10 km deep · 4 km away
6. 4.178 km SW of San Antonio, ChileWed, Apr 28, 5:50 PM GMT-4 · 1984 days ago · 23 km deep · 14 km away
7. 4.1103 km NW of Constitución, ChileTue, May 4, 4:54 AM GMT-4 · 1978 days ago · 19 km deep · 87 km away
8. 4.579 km WSW of San Antonio, ChileTue, May 4, 11:18 AM GMT-4 · 1978 days ago · 10 km deep · 15 km away · felt by 1
9. 4.332 km W of San Antonio, ChileSun, Jun 6, 3:42 PM GMT-4 · 1945 days ago · 31 km deep · 66 km away
10. 4.354 km WSW of San Antonio, ChileFri, Jun 11, 10:55 PM GMT-4 · 1940 days ago · 23 km deep · 41 km away · felt by 3
11. 5.157 km WSW of San Antonio, ChileFri, Jun 11, 11:36 PM GMT-4 · 1940 days ago · 15 km deep · 39 km away · felt by 26
12. 4.566 km SW of San Antonio, ChileTue, Jun 15, 9:57 AM GMT-4 · 1936 days ago · 18 km deep · 27 km away · felt by 2
13. 4.389 km WSW of San Antonio, ChileFri, Jun 18, 2:33 PM GMT-4 · 1933 days ago · 10 km deep · 15 km away · felt by 1

Before

1. 4.284 km WSW of San Antonio, ChileThu, Apr 22, 5:57 PM GMT-4 · 1990 days ago · 10 km deep · 7 km away · felt by 2
2. 4.184 km WSW of San Antonio, ChileThu, Apr 22, 5:45 PM GMT-4 · 1990 days ago · 10 km deep · 6 km away
3. 4.286 km SW of San Antonio, ChileThu, Apr 22, 8:46 AM GMT-4 · 1990 days ago · 10 km deep · 9 km away
4. 4.484 km SW of San Antonio, ChileThu, Apr 22, 6:29 AM GMT-4 · 1990 days ago · 10 km deep · 9 km away · felt by 5
5. 5.582 km WSW of San Antonio, ChileWed, Apr 21, 8:17 PM GMT-4 · 1991 days ago · 13 km deep · 9 km away · felt by 37
6. 4.479 km SW of San Antonio, ChileWed, Apr 21, 4:15 AM GMT-4 · 1991 days ago · 10 km deep · 18 km away
7. 4.583 km SW of San Antonio, ChileWed, Apr 21, 4:08 AM GMT-4 · 1991 days ago · 10 km deep · 10 km away
8. 4.478 km WSW of San Antonio, ChileMon, Apr 19, 11:02 AM GMT-4 · 1993 days ago · 10 km deep · 13 km away · felt by 5
9. 4.281 km WSW of San Antonio, ChileMon, Apr 19, 9:47 AM GMT-4 · 1993 days ago · 10 km deep · 10 km away · felt by 1
10. 4.281 km WSW of San Antonio, ChileMon, Apr 19, 9:31 AM GMT-4 · 1993 days ago · 3 km deep · 9 km away
11. 5.079 km WSW of San Antonio, ChileMon, Apr 19, 9:05 AM GMT-4 · 1993 days ago · 10 km deep · 11 km away · felt by 17
12. 5.181 km WSW of San Antonio, ChileMon, Apr 19, 7:13 AM GMT-4 · 1993 days ago · 10 km deep · 9 km away · felt by 17
13. 5.285 km WSW of San Antonio, ChileMon, Apr 19, 12:11 AM GMT-4 · 1994 days ago · 9 km deep · 6 km away · felt by 23
14. 5.185 km WSW of San Antonio, ChileSun, Apr 18, 11:18 PM GMT-4 · 1994 days ago · 13 km deep · 7 km away · felt by 42

From the USGS Earthquake Hazards Program and its partner networks, event us6000e3u0. Read Sat, Oct 3, 2026, 4:02 PM UTC.