M3.3 earthquake 4km E of Carson, CA

Magnitude

3.3 (ml), minor

Local time

Tue, Mar 20, 1973, 8:11 PM PST

UTC

1973-03-21 04:11:49 UTC

Depth

7.7 km (4.8 mi), shallow

Epicenter

33.825° N, 118.241° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.9 km horizontally, 3.2 km in depth

Magnitude uncertainty

±0.17

Depth from

From location

Station coverage gap

164°

Stations used

11

• Carson, CaliforniaPopulation 93,281. Forecast4 kmE
• Long Beach, CaliforniaPopulation 474,140. Forecast8 kmNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast25 kmS

After

1. 1.719km S of Rancho Palos Verdes, CAWed, Mar 21, 1:58 AM PST · 19552 days ago · 6 km deep · 31 km away
2. 1.720km SSW of San Pedro, CAWed, Mar 21, 2:00 AM PST · 19552 days ago · 0 km deep · 30 km away
3. 2.716km S of Rancho Palos Verdes, CAWed, Mar 21, 2:07 AM PST · 19552 days ago · 6 km deep · 29 km away
4. 1.721km SSW of San Pedro, CAWed, Mar 21, 2:45 AM PST · 19552 days ago · 6 km deep · 32 km away
5. 2.321km NNW of Avalon, CAWed, Mar 21, 9:04 AM PST · 19551 days ago · 6 km deep · 39 km away
6. 3.028km NW of Avalon, CAWed, Mar 21, 9:54 AM PST · 19551 days ago · 6 km deep · 46 km away
7. 1.72km W of Agua Dulce, CAWed, Mar 21, 10:55 AM PST · 19551 days ago · 4 km deep · 76 km away
8. 1.78km ENE of Santa Clarita, CAWed, Mar 21, 7:39 PM PST · 19551 days ago · 8 km deep · 70 km away
9. 1.72km NNE of Agua Dulce, CAWed, Mar 21, 8:40 PM PST · 19551 days ago · 6 km deep · 77 km away
10. 2.39km NNW of Rancho Cucamonga, CAFri, Mar 23, 12:26 AM PST · 19550 days ago · 0 km deep · 72 km away
11. 2.418km S of Camarillo, CAFri, Mar 23, 12:32 AM PST · 19550 days ago · 6 km deep · 77 km away
12. 1.724km SW of Newport Beach, CASat, Mar 24, 5:08 AM PST · 19549 days ago · 6 km deep · 44 km away
13. 2.52km NW of Fontana, CASun, Mar 25, 2:13 AM PST · 19548 days ago · 7 km deep · 77 km away
14. 2.524km S of Malibu Beach, CASun, Mar 25, 5:27 PM PST · 19547 days ago · 6 km deep · 39 km away
15. 1.77km SSW of Devore, CASun, Mar 25, 11:32 PM PST · 19547 days ago · 6 km deep · 84 km away
16. 2.015km SW of Malibu, CAMon, Mar 26, 1:30 AM PST · 19547 days ago · 6 km deep · 65 km away
17. 2.71km NNW of Fontana, CAMon, Mar 26, 1:57 AM PST · 19547 days ago · 3 km deep · 78 km away
18. 2.77km E of Camarillo, CAMon, Mar 26, 7:13 AM PST · 19546 days ago · 6 km deep · 80 km away
19. 2.313km W of Malibu, CAMon, Mar 26, 4:39 PM PST · 19546 days ago · 8 km deep · 68 km away
20. 1.71km SW of Cudahy, CAWed, Mar 28, 12:22 AM PST · 19545 days ago · 6 km deep · 15 km away
21. 3.31km ENE of Rialto, CAWed, Mar 28, 9:52 AM PST · 19544 days ago · 14 km deep · 87 km away
22. 3.03km ESE of Century City, CAThu, Mar 29, 1:35 PM PST · 19543 days ago · 0 km deep · 29 km away
23. 1.79km NNE of Pacoima, CAFri, Mar 30, 4:47 AM PST · 19543 days ago · 7 km deep · 62 km away
24. 2.74km SSE of Loma Linda, CAFri, Mar 30, 7:50 AM PST · 19542 days ago · 0 km deep · 94 km away
25. 1.71km SSE of Santa Monica, CAFri, Mar 30, 1:35 PM PST · 19542 days ago · 5 km deep · 31 km away
26. 1.77km ESE of Wrightwood, CAFri, Mar 30, 6:59 PM PST · 19542 days ago · 8 km deep · 84 km away
27. 2.43km SSW of Loma Linda, CAFri, Mar 30, 7:51 PM PST · 19542 days ago · 4 km deep · 92 km away
28. 1.72km WSW of Santa Monica, CAFri, Mar 30, 9:33 PM PST · 19542 days ago · 3 km deep · 32 km away
29. 2.27km NNW of Pacoima, CAMon, Apr 2, 4:11 PM PST · 19539 days ago · 6 km deep · 62 km away
30. 1.71km SE of Santa Monica, CAMon, Apr 2, 11:09 PM PST · 19539 days ago · 6 km deep · 30 km away
31. 1.73km SSW of San Bernardino, CATue, Apr 3, 9:32 PM PST · 19538 days ago · 5 km deep · 92 km away
32. 1.79km E of Santa Clarita, CAWed, Apr 4, 9:24 AM PST · 19537 days ago · 10 km deep · 68 km away
33. 1.74km NW of Rancho Cucamonga, CAThu, Apr 5, 8:56 PM PST · 19536 days ago · 10 km deep · 69 km away
34. 1.73km NE of Costa Mesa, CAFri, Apr 6, 3:05 AM PST · 19536 days ago · 8 km deep · 36 km away
35. 1.78km SE of Santa Clarita, CASun, Apr 8, 12:52 PM PST · 19533 days ago · 8 km deep · 63 km away
36. 1.76km WSW of Agua Dulce, CASun, Apr 8, 8:11 PM PST · 19533 days ago · 10 km deep · 73 km away
37. 1.72km SSE of Chatsworth, CAMon, Apr 9, 2:41 AM PST · 19533 days ago · 7 km deep · 56 km away
38. 2.59km S of Agua Dulce, CAMon, Apr 9, 12:00 PM PST · 19532 days ago · 2 km deep · 67 km away
39. 1.77km WSW of Devore, CATue, Apr 10, 3:04 AM PST · 19532 days ago · 7 km deep · 82 km away
40. 1.72km N of Silver Lake, CATue, Apr 10, 10:08 AM PST · 19531 days ago · 5 km deep · 32 km away
41. 1.78km N of Devore, CATue, Apr 10, 4:57 PM PST · 19531 days ago · 5 km deep · 94 km away
42. 1.77km N of Lake View Terrace, CATue, Apr 10, 9:40 PM PST · 19531 days ago · 1 km deep · 58 km away
43. 2.81km WSW of Fontana, CAWed, Apr 11, 12:00 AM PST · 19531 days ago · 5 km deep · 77 km away
44. 1.77km N of Lake View Terrace, CAWed, Apr 11, 12:48 AM PST · 19531 days ago · 6 km deep · 58 km away
45. 1.72km SSE of Monterey Park, CAWed, Apr 11, 4:15 PM PST · 19530 days ago · 8 km deep · 27 km away
46. 2.65km SE of Santa Clarita, CAWed, Apr 11, 7:33 PM PST · 19530 days ago · 0 km deep · 66 km away
47. 2.22km E of Canoga Park, CAThu, Apr 12, 6:48 AM PST · 19529 days ago · 2 km deep · 53 km away
48. 1.75km E of Villa Park, CAThu, Apr 12, 4:25 PM PST · 19529 days ago · 5 km deep · 44 km away
49. 1.79km ESE of Santa Clarita, CAThu, Apr 12, 8:40 PM PST · 19529 days ago · 7 km deep · 64 km away
50. 1.712km SSW of Agua Dulce, CAFri, Apr 13, 4:48 AM PST · 19529 days ago · 10 km deep · 64 km away
51. 1.710km ESE of Santa Clarita, CAFri, Apr 13, 4:49 AM PST · 19529 days ago · 10 km deep · 65 km away
52. 1.75km SSW of Huntington Beach, CASat, Apr 14, 1:17 AM PST · 19528 days ago · 6 km deep · 28 km away
53. 1.79km N of Lake View Terrace, CASun, Apr 15, 3:21 AM PST · 19527 days ago · 4 km deep · 60 km away
54. 1.78km N of Lake View Terrace, CATue, Apr 17, 10:23 AM PST · 19524 days ago · 3 km deep · 59 km away
55. 1.78km NNE of Pacoima, CATue, Apr 17, 1:33 PM PST · 19524 days ago · 3 km deep · 59 km away
56. 1.710km ESE of Santa Clarita, CATue, Apr 17, 1:34 PM PST · 19524 days ago · 10 km deep · 65 km away
57. 3.08km ESE of Santa Clarita, CATue, Apr 17, 1:34 PM PST · 19524 days ago · 10 km deep · 65 km away
58. 1.711km N of Lake View Terrace, CAThu, Apr 19, 4:49 AM PST · 19523 days ago · 5 km deep · 62 km away
59. 2.37km S of Las Flores, CAThu, Apr 19, 11:29 AM PST · 19522 days ago · 6 km deep · 39 km away
60. 1.76km NNE of Lake View Terrace, CASun, Apr 22, 2:01 AM PST · 19520 days ago · 8 km deep · 56 km away

The first 60 of 112.

Before

1. 1.78km SW of Agua Dulce, CATue, Mar 20, 4:14 PM PST · 19552 days ago · 9 km deep · 70 km away
2. 2.318km SSW of Newport Beach, CATue, Mar 20, 5:01 AM PST · 19553 days ago · 6 km deep · 43 km away
3. 1.74km SW of Huntington Beach, CAMon, Mar 19, 6:15 PM PST · 19553 days ago · 5 km deep · 25 km away
4. 1.74km N of Granada Hills, CAMon, Mar 19, 12:11 PM PST · 19553 days ago · 15 km deep · 59 km away
5. 2.414km SW of Huntington Beach, CAMon, Mar 19, 11:58 AM PST · 19553 days ago · 6 km deep · 30 km away
6. 2.322km S of Rancho Palos Verdes, CAMon, Mar 19, 3:14 AM PST · 19554 days ago · 6 km deep · 35 km away
7. 1.77km SSW of Agua Dulce, CAMon, Mar 19, 2:13 AM PST · 19554 days ago · 6 km deep · 70 km away
8. 2.223km NNW of Avalon, CASun, Mar 18, 11:14 PM PST · 19554 days ago · 6 km deep · 39 km away
9. 2.420km S of Rancho Palos Verdes, CASun, Mar 18, 6:37 PM PST · 19554 days ago · 6 km deep · 32 km away
10. 3.312km NW of Avalon, CASun, Mar 18, 6:14 PM PST · 19554 days ago · 6 km deep · 47 km away
11. 3.221km NNW of Avalon, CASun, Mar 18, 6:13 PM PST · 19554 days ago · 6 km deep · 36 km away
12. 1.720km SSW of Rancho Palos Verdes, CASun, Mar 18, 3:20 PM PST · 19554 days ago · 6 km deep · 33 km away
13. 2.55km NW of Newport Beach, CASat, Mar 17, 1:53 AM PST · 19556 days ago · 6 km deep · 32 km away
14. 1.72km E of Panorama City, CAFri, Mar 16, 7:38 PM PST · 19556 days ago · 6 km deep · 48 km away
15. 3.616km WSW of Malibu, CAFri, Mar 16, 4:54 PM PST · 19556 days ago · 6 km deep · 70 km away
16. 3.314km SSE of Camarillo, CAFri, Mar 16, 2:38 PM PST · 19556 days ago · 6 km deep · 75 km away
17. 1.73km ESE of Fountain Valley, CAThu, Mar 15, 12:26 PM PST · 19557 days ago · 3 km deep · 32 km away
18. 1.72km N of Fountain Valley, CAThu, Mar 15, 2:08 AM PST · 19558 days ago · 9 km deep · 29 km away
19. 1.75km WSW of Agua Dulce, CAWed, Mar 14, 6:21 PM PST · 19558 days ago · 5 km deep · 73 km away
20. 1.76km WSW of Agua Dulce, CAWed, Mar 14, 6:14 PM PST · 19558 days ago · 4 km deep · 74 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3320158 (also filed as usp000010h). Read Thu, Oct 1, 2026, 1:18 AM UTC.