M2.8 earthquake 41 km W of Three Rocks, California

Magnitude

2.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, Apr 9, 1975, 11:26 AM PDT

UTC

1975-04-09 18:26:53 UTC

Depth

6.6 km (4.1 mi), shallow

Epicenter

36.523° N, 120.851° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 7.3 km in depth

Magnitude uncertainty

±0.16

Depth from

From location

Station coverage gap

152°

Stations used

6

• Greenfield, CaliforniaPopulation 17,184. Forecast42 kmENE
• Salinas, CaliforniaPopulation 157,380. Forecast74 kmESE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast363 kmNW

After

1. 1.6Northern CaliforniaWed, Apr 9, 10:48 PM PDT · 18804 days ago · 4 km deep · 94 km away
2. 3.78 km ENE of San Martin, CaliforniaThu, Apr 10, 5:24 AM PDT · 18804 days ago · 8 km deep · 90 km away
3. 2.4Northern CaliforniaThu, Apr 10, 3:53 PM PDT · 18803 days ago · 7 km deep · 89 km away
4. 2.512 km NNE of Tres Pinos, CaliforniaThu, Apr 10, 6:51 PM PDT · 18803 days ago · 6 km deep · 55 km away
5. 2.319 km SSE of Tres Pinos, CaliforniaThu, Apr 10, 9:35 PM PDT · 18803 days ago · 3 km deep · 37 km away
6. 2.822 km NE of San Lucas, CaliforniaFri, Apr 11, 12:13 AM PDT · 18803 days ago · 5 km deep · 28 km away
7. 1.927 km NE of Soledad, CaliforniaFri, Apr 11, 5:06 AM PDT · 18803 days ago · 9 km deep · 22 km away
8. 2.516 km E of Tres Pinos, CaliforniaSat, Apr 12, 3:17 AM PDT · 18802 days ago · 4 km deep · 40 km away
9. 3.731 km W of Lockwood, CaliforniaSat, Apr 12, 4:53 AM PDT · 18802 days ago · 14 km deep · 87 km away
10. 2.729 km NE of San Ardo, CaliforniaSat, Apr 12, 5:00 AM PDT · 18802 days ago · 7 km deep · 33 km away
11. 3.525 km ENE of Greenfield, CaliforniaSat, Apr 12, 6:23 AM PDT · 18802 days ago · 1 km deep · 16 km away
12. 3.45 km SW of Gilroy, CaliforniaSat, Apr 12, 10:42 AM PDT · 18802 days ago · 4 km deep · 84 km away
13. 2.58 km NW of Hollister, CaliforniaSat, Apr 12, 11:35 AM PDT · 18802 days ago · 6 km deep · 70 km away
14. 2.95 km SW of Gilroy, CaliforniaSat, Apr 12, 12:17 PM PDT · 18802 days ago · 2 km deep · 84 km away
15. 3.0Central CaliforniaSat, Apr 12, 1:20 PM PDT · 18802 days ago · 5 km deep · 84 km away
16. 3.05 km SW of Gilroy, CaliforniaSat, Apr 12, 1:41 PM PDT · 18802 days ago · 4 km deep · 84 km away
17. 2.721 km NE of Soledad, CaliforniaSat, Apr 12, 3:44 PM PDT · 18801 days ago · 3 km deep · 28 km away
18. 3.18 km NW of Hollister, CaliforniaSat, Apr 12, 11:33 PM PDT · 18801 days ago · 4 km deep · 70 km away
19. 2.421 km NE of Soledad, CaliforniaSun, Apr 13, 3:26 AM PDT · 18801 days ago · 7 km deep · 26 km away
20. 4.28 km SSE of San Juan Bautista, CaliforniaSun, Apr 13, 6:06 AM PDT · 18801 days ago · 9 km deep · 64 km away
21. 2.222 km NNE of Soledad, CaliforniaSun, Apr 13, 10:54 AM PDT · 18801 days ago · 8 km deep · 33 km away
22. 3.022 km NE of Soledad, CaliforniaSun, Apr 13, 12:30 PM PDT · 18801 days ago · 3 km deep · 24 km away
23. 3.023 km ENE of Soledad, CaliforniaSun, Apr 13, 2:27 PM PDT · 18801 days ago · 3 km deep · 22 km away
24. 3.021 km NE of Soledad, CaliforniaSun, Apr 13, 4:01 PM PDT · 18800 days ago · 7 km deep · 27 km away
25. 2.55 km SW of Gilroy, CaliforniaSun, Apr 13, 4:03 PM PDT · 18800 days ago · 4 km deep · 84 km away
26. 2.39 km NNW of Hollister, CaliforniaSun, Apr 13, 7:04 PM PDT · 18800 days ago · 5 km deep · 71 km away
27. 2.224 km SE of Tres Pinos, CaliforniaSun, Apr 13, 11:38 PM PDT · 18800 days ago · 7 km deep · 29 km away
28. 1.921 km NE of Soledad, CaliforniaMon, Apr 14, 2:05 AM PDT · 18800 days ago · 7 km deep · 27 km away
29. 2.623 km ENE of Soledad, CaliforniaMon, Apr 14, 3:18 AM PDT · 18800 days ago · 3 km deep · 22 km away
30. 2.322 km NE of Soledad, CaliforniaMon, Apr 14, 3:35 AM PDT · 18800 days ago · 4 km deep · 25 km away
31. 2.68 km NW of Hollister, CaliforniaMon, Apr 14, 10:38 AM PDT · 18800 days ago · 6 km deep · 70 km away
32. 3.421 km NE of Soledad, CaliforniaMon, Apr 14, 2:15 PM PDT · 18800 days ago · 8 km deep · 27 km away
33. 2.610 km NNW of Hollister, CaliforniaMon, Apr 14, 8:42 PM PDT · 18799 days ago · 5 km deep · 71 km away
34. 3.425 km ENE of Greenfield, CaliforniaTue, Apr 15, 12:48 AM PDT · 18799 days ago · 3 km deep · 16 km away
35. 3.38 km ENE of San Martin, CaliforniaTue, Apr 15, 9:50 AM PDT · 18799 days ago · 7 km deep · 90 km away
36. 2.69 km NW of Hollister, CaliforniaTue, Apr 15, 4:48 PM PDT · 18798 days ago · 4 km deep · 70 km away
37. 3.122 km NNE of Soledad, CaliforniaTue, Apr 15, 9:10 PM PDT · 18798 days ago · 9 km deep · 33 km away
38. 3.05 km SE of Tres Pinos, CaliforniaTue, Apr 15, 9:51 PM PDT · 18798 days ago · 9 km deep · 46 km away
39. 2.221 km NE of Soledad, CaliforniaWed, Apr 16, 1:03 AM PDT · 18798 days ago · 3 km deep · 28 km away
40. 2.47 km ENE of Morgan Hill, CaliforniaWed, Apr 16, 7:56 AM PDT · 18798 days ago · 4 km deep · 96 km away
41. 3.122 km NNE of Soledad, CaliforniaWed, Apr 16, 4:24 PM PDT · 18797 days ago · 8 km deep · 34 km away
42. 1.97 km ENE of Morgan Hill, CaliforniaWed, Apr 16, 10:57 PM PDT · 18797 days ago · 4 km deep · 96 km away
43. 1.78 km ENE of San Martin, CaliforniaThu, Apr 17, 2:34 AM PDT · 18797 days ago · 7 km deep · 88 km away
44. 2.527 km NE of Soledad, CaliforniaThu, Apr 17, 4:19 AM PDT · 18797 days ago · 9 km deep · 20 km away
45. 2.527 km ENE of Soledad, CaliforniaThu, Apr 17, 5:04 AM PDT · 18797 days ago · 9 km deep · 20 km away
46. 3.03 km SSE of Big Sur, CaliforniaThu, Apr 17, 11:58 AM PDT · 18797 days ago · 5 km deep · 90 km away
47. 2.422 km NNE of Soledad, CaliforniaThu, Apr 17, 1:34 PM PDT · 18797 days ago · 2 km deep · 33 km away
48. 3.523 km NE of San Lucas, CaliforniaThu, Apr 17, 3:07 PM PDT · 18796 days ago · 7 km deep · 30 km away
49. 2.812 km NNW of Hollister, CaliforniaThu, Apr 17, 8:24 PM PDT · 18796 days ago · 7 km deep · 72 km away
50. 2.68 km NE of San Juan Bautista, CaliforniaFri, Apr 18, 2:26 AM PDT · 18796 days ago · 5 km deep · 70 km away
51. 2.521 km NE of Soledad, CaliforniaFri, Apr 18, 3:01 AM PDT · 18796 days ago · 6 km deep · 25 km away
52. 2.010 km NW of Hollister, CaliforniaFri, Apr 18, 9:14 AM PDT · 18796 days ago · 4 km deep · 71 km away
53. 2.59 km NW of Hollister, CaliforniaFri, Apr 18, 9:53 AM PDT · 18796 days ago · 0 km deep · 70 km away
54. 3.224 km NE of Greenfield, CaliforniaFri, Apr 18, 12:23 PM PDT · 18796 days ago · 7 km deep · 19 km away
55. 2.410 km NNW of Hollister, CaliforniaFri, Apr 18, 4:01 PM PDT · 18795 days ago · 5 km deep · 71 km away
56. 2.824 km NE of Greenfield, CaliforniaSat, Apr 19, 4:42 AM PDT · 18795 days ago · 7 km deep · 18 km away
57. 2.55 km S of Gilroy, CaliforniaSat, Apr 19, 5:44 AM PDT · 18795 days ago · 6 km deep · 81 km away
58. 2.526 km NE of Soledad, CaliforniaSat, Apr 19, 5:23 PM PDT · 18794 days ago · 7 km deep · 26 km away
59. 2.414 km SW of Gustine, CaliforniaSat, Apr 19, 6:43 PM PDT · 18794 days ago · 2 km deep · 76 km away
60. 1.99 km NE of San Juan Bautista, CaliforniaSat, Apr 19, 11:56 PM PDT · 18794 days ago · 2 km deep · 71 km away

The first 60 of 190.

Before

1. 2.922 km ENE of Soledad, CaliforniaWed, Apr 9, 10:15 AM PDT · 18805 days ago · 9 km deep · 23 km away
2. 3.5Central CaliforniaWed, Apr 9, 8:47 AM PDT · 18805 days ago · 10 km deep · 23 km away
3. 2.722 km ENE of Soledad, CaliforniaWed, Apr 9, 8:32 AM PDT · 18805 days ago · 10 km deep · 23 km away
4. 1.522 km NE of Soledad, CaliforniaWed, Apr 9, 4:02 AM PDT · 18805 days ago · 3 km deep · 24 km away
5. 2.622 km NE of Soledad, CaliforniaWed, Apr 9, 12:03 AM PDT · 18805 days ago · 3 km deep · 24 km away
6. 2.213 km S of Tres Pinos, CaliforniaTue, Apr 8, 11:00 PM PDT · 18805 days ago · 4 km deep · 43 km away
7. 2.05 km SSW of Tres Pinos, CaliforniaTue, Apr 8, 5:17 AM PDT · 18806 days ago · 7 km deep · 51 km away
8. 3.34 km ESE of Tres Pinos, CaliforniaMon, Apr 7, 11:05 AM PDT · 18807 days ago · 9 km deep · 47 km away
9. 3.49 km NE of San Juan Bautista, CaliforniaMon, Apr 7, 4:39 AM PDT · 18807 days ago · 5 km deep · 70 km away
10. 2.123 km NE of King City, CaliforniaMon, Apr 7, 2:43 AM PDT · 18807 days ago · 3 km deep · 20 km away
11. 1.620 km SSE of Tres Pinos, CaliforniaSun, Apr 6, 10:42 PM PDT · 18807 days ago · 6 km deep · 35 km away
12. 2.35 km SSW of Gilroy, CaliforniaSun, Apr 6, 4:01 PM PDT · 18807 days ago · 3 km deep · 82 km away
13. 3.224 km ENE of Soledad, CaliforniaSun, Apr 6, 3:27 PM PDT · 18807 days ago · 3 km deep · 20 km away
14. 2.444 km ENE of Soledad, CaliforniaSun, Apr 6, 9:44 AM PDT · 18808 days ago · 5 km deep · 8 km away
15. 2.78 km ENE of San Martin, CaliforniaSun, Apr 6, 2:40 AM PDT · 18808 days ago · 8 km deep · 88 km away
16. 2.724 km NE of Greenfield, CaliforniaSat, Apr 5, 10:57 PM PDT · 18808 days ago · 6 km deep · 18 km away
17. 2.829 km NE of San Ardo, CaliforniaSat, Apr 5, 11:21 AM PDT · 18809 days ago · 8 km deep · 34 km away
18. 2.423 km NNE of San Lucas, CaliforniaSat, Apr 5, 9:05 AM PDT · 18809 days ago · 4 km deep · 25 km away
19. 2.431 km WNW of Coalinga, CaliforniaSat, Apr 5, 9:03 AM PDT · 18809 days ago · 12 km deep · 32 km away
20. 2.623 km NE of Greenfield, CaliforniaSat, Apr 5, 1:18 AM PDT · 18809 days ago · 0 km deep · 18 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1023484. Read Sat, Oct 3, 2026, 9:20 AM UTC.