M4.8 earthquake 5km NNE of Acton, CA

Magnitude

4.8 (ml), light

Local time

Sat, Aug 23, 1952, 3:09 AM GMT-7

UTC

1952-08-23 10:09:06 UTC

Depth

6.0 km (3.7 mi), shallow

Epicenter

34.508° N, 118.174° W

Region

California

Strongest shaking

VI, strong shaking

Tsunami flag

No

Status

Reviewed by a seismologist

Strongest estimated

VI, strong shaking

Map

Automatic

Location uncertainty

About 1.3 km horizontally, 31.6 km in depth

Magnitude uncertainty

±0.18

Depth from

Operator assigned

Station coverage gap

89°

Stations used

12

• Acton, CaliforniaPopulation 7,596. Forecast5 kmNNE
• Vincent, CaliforniaPopulation 15,922. Forecast5 kmW
• Palmdale, CaliforniaPopulation 158,351. Forecast10 kmSW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast51 kmN

After

1. 2.89km NNW of Acton, CASat, Aug 23, 4:03 AM GMT-7 · 27058 days ago · 6 km deep · 7 km away
2. 2.26km NNW of Acton, CASat, Aug 23, 5:28 AM GMT-7 · 27058 days ago · 6 km deep · 4 km away
3. 3.64km NW of Grapevine, CASun, Aug 24, 4:11 PM GMT-7 · 27057 days ago · 6 km deep · 89 km away
4. 4.713km N of Grapevine, CASun, Aug 24, 11:20 PM GMT-7 · 27056 days ago · 6 km deep · 94 km away
5. 4.59km SSE of Tehachapi, CATue, Aug 26, 1:56 PM GMT-7 · 27055 days ago · 6 km deep · 65 km away
6. 4.721km N of Tehachapi, CAFri, Aug 29, 9:55 PM GMT-7 · 27051 days ago · 0 km deep · 94 km away
7. 3.922km NNW of Tehachapi, CAFri, Aug 29, 9:59 PM GMT-7 · 27051 days ago · 0 km deep · 96 km away
8. 4.619km SE of Arvin, CATue, Sep 2, 5:41 AM GMT-7 · 27048 days ago · 6 km deep · 79 km away
9. 4.020km NNW of Tehachapi, CATue, Sep 2, 9:38 AM GMT-7 · 27048 days ago · 6 km deep · 94 km away
10. 4.77km SW of Grapevine, CATue, Sep 2, 1:45 PM GMT-7 · 27048 days ago · 6 km deep · 87 km away
11. 3.224km NNW of Tehachapi, CAThu, Sep 4, 6:51 AM GMT-7 · 27046 days ago · 6 km deep · 97 km away
12. 3.222km NNW of Tehachapi, CAThu, Sep 4, 8:14 AM GMT-7 · 27046 days ago · 6 km deep · 95 km away
13. 4.419km N of Tehachapi, CAThu, Sep 4, 11:06 AM GMT-7 · 27046 days ago · 6 km deep · 92 km away
14. 4.415km WNW of Grapevine, CAFri, Sep 12, 3:35 AM GMT-7 · 27038 days ago · 5 km deep · 98 km away
15. 4.018km WNW of Tehachapi, CASun, Sep 14, 1:43 PM GMT-7 · 27036 days ago · 5 km deep · 89 km away
16. 3.822km N of Tehachapi, CASun, Sep 14, 9:40 PM GMT-7 · 27035 days ago · 8 km deep · 95 km away
17. 2.77km N of Fontana, CATue, Sep 16, 12:03 AM GMT-7 · 27034 days ago · 8 km deep · 76 km away
18. 3.519km NNW of Tehachapi, CASat, Sep 20, 1:13 AM GMT-7 · 27030 days ago · 1 km deep · 93 km away
19. 4.013km NNE of Grapevine, CAThu, Sep 25, 9:21 AM GMT-7 · 27025 days ago · 8 km deep · 89 km away
20. 3.916km SSE of Arvin, CAThu, Sep 25, 8:51 PM GMT-7 · 27024 days ago · 6 km deep · 82 km away
21. 4.016km W of Tehachapi, CAFri, Sep 26, 1:21 PM GMT-7 · 27024 days ago · 6 km deep · 80 km away
22. 3.67km SE of Arvin, CASun, Oct 5, 11:51 PM GMT-8 · 27014 days ago · 6 km deep · 91 km away
23. 3.525km S of Bodfish, CAMon, Oct 13, 1:51 PM GMT-8 · 27007 days ago · 6 km deep · 99 km away
24. 4.33km WNW of Grapevine, CAThu, Oct 16, 4:22 AM GMT-8 · 27004 days ago · 6 km deep · 88 km away
25. 3.03km SSE of Muscoy, CAFri, Oct 17, 4:48 AM GMT-8 · 27003 days ago · 6 km deep · 88 km away
26. 2.12km SSW of Colton, CAFri, Oct 17, 7:23 AM GMT-8 · 27003 days ago · 18 km deep · 93 km away
27. 3.81km N of Acton, CASun, Oct 19, 6:04 AM GMT-8 · 27001 days ago · 6 km deep · 4 km away
28. 4.318km N of Tehachapi, CAMon, Oct 20, 10:14 AM GMT-8 · 27000 days ago · 6 km deep · 91 km away
29. 3.814km NNW of Grapevine, CATue, Oct 21, 3:44 AM GMT-8 · 26999 days ago · 0 km deep · 96 km away

Before

1. 4.318km ENE of Grapevine, CAFri, Aug 22, 11:03 PM GMT-7 · 27058 days ago · 6 km deep · 77 km away
2. 4.39km WSW of Grapevine, CAWed, Aug 20, 1:47 AM GMT-7 · 27061 days ago · 6 km deep · 88 km away
3. 2.55km NW of Rancho Cucamonga, CATue, Aug 19, 2:15 PM GMT-7 · 27062 days ago · 10 km deep · 64 km away
4. 3.821km NW of Tehachapi, CATue, Aug 19, 2:01 AM GMT-7 · 27062 days ago · 6 km deep · 94 km away
5. 3.911km ENE of Grapevine, CAMon, Aug 18, 12:16 AM GMT-7 · 27063 days ago · 5 km deep · 80 km away
6. 4.211km NE of Grapevine, CASun, Aug 17, 2:04 PM GMT-7 · 27064 days ago · 0 km deep · 85 km away
7. 3.912km NNW of Grapevine, CASun, Aug 17, 4:10 AM GMT-7 · 27064 days ago · 0 km deep · 95 km away
8. 4.010km NNW of Grapevine, CASun, Aug 17, 2:09 AM GMT-7 · 27064 days ago · 0 km deep · 93 km away
9. 3.910km N of Grapevine, CASat, Aug 16, 11:14 PM GMT-7 · 27064 days ago · 6 km deep · 91 km away
10. 3.810km W of Tehachapi, CAFri, Aug 15, 10:57 PM GMT-7 · 27065 days ago · 6 km deep · 79 km away
11. 4.111km NNE of Grapevine, CAThu, Aug 14, 4:41 AM GMT-7 · 27067 days ago · 6 km deep · 87 km away
12. 4.36km WSW of Tehachapi, CAThu, Aug 14, 12:28 AM GMT-7 · 27067 days ago · 6 km deep · 75 km away
13. 4.216km NNW of Tehachapi, CAWed, Aug 13, 2:25 PM GMT-7 · 27068 days ago · 1 km deep · 90 km away
14. 4.719km SE of Arvin, CAWed, Aug 13, 10:39 AM GMT-7 · 27068 days ago · 6 km deep · 79 km away
15. 4.617km N of Tehachapi, CATue, Aug 12, 9:29 PM GMT-7 · 27068 days ago · 0 km deep · 90 km away
16. 4.211km NW of Grapevine, CASun, Aug 10, 12:44 PM GMT-7 · 27071 days ago · 6 km deep · 95 km away
17. 4.621km N of Tehachapi, CASun, Aug 10, 5:23 AM GMT-7 · 27071 days ago · 1 km deep · 93 km away
18. 4.025km NNW of Tehachapi, CASat, Aug 9, 11:01 PM GMT-7 · 27071 days ago · 2 km deep · 99 km away
19. 4.219km N of Tehachapi, CASat, Aug 9, 3:07 AM GMT-7 · 27072 days ago · 1 km deep · 92 km away
20. 2.42km SSE of Loma Linda, CAFri, Aug 8, 6:29 PM GMT-7 · 27072 days ago · 18 km deep · 99 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3306750 (also filed as ushis1857). Read Tue, Sep 22, 2026, 11:20 AM UTC.