M2.5 earthquake 10 km SW of Ridgemark, California

Magnitude

2.5 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Thu, Aug 10, 1978, 10:47 AM PDT

UTC

1978-08-10 17:47:16 UTC

Depth

6.4 km (4.0 mi), shallow

Epicenter

36.761° N, 121.458° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.4 km in depth

Magnitude uncertainty

±0.14

Depth from

From location

Station coverage gap

42°

Stations used

47

• Ridgemark, CaliforniaPopulation 3,016. Forecast10 kmSW
• Hollister, CaliforniaPopulation 37,462. Forecast11 kmSSW
• Salinas, CaliforniaPopulation 157,380. Forecast20 kmENE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast419 kmNW

After

1. 2.617 km SSE of Tres Pinos, CaliforniaThu, Aug 10, 9:29 PM PDT · 17584 days ago · 3 km deep · 22 km away
2. 2.32 km NE of East Foothills, CaliforniaFri, Aug 11, 5:35 AM PDT · 17584 days ago · 0 km deep · 77 km away
3. 2.46 km NE of East Foothills, CaliforniaFri, Aug 11, 3:48 PM PDT · 17583 days ago · 8 km deep · 78 km away
4. 1.83 km NNW of Hollister, CaliforniaFri, Aug 11, 8:03 PM PDT · 17583 days ago · 7 km deep · 14 km away
5. 1.929 km ENE of Soledad, CaliforniaSat, Aug 12, 12:46 AM PDT · 17583 days ago · 6 km deep · 45 km away
6. 3.211 km S of Tres Pinos, CaliforniaSat, Aug 12, 7:58 PM PDT · 17582 days ago · 3 km deep · 15 km away
7. 1.929 km ENE of Soledad, CaliforniaMon, Aug 14, 3:30 AM PDT · 17581 days ago · 6 km deep · 43 km away
8. 1.71 km WSW of Tres Pinos, CaliforniaMon, Aug 14, 2:21 PM PDT · 17580 days ago · 6 km deep · 11 km away
9. 1.523 km NNE of San Lucas, CaliforniaMon, Aug 14, 7:59 PM PDT · 17580 days ago · 4 km deep · 71 km away
10. 1.810 km SE of Sunol, CaliforniaMon, Aug 14, 8:14 PM PDT · 17580 days ago · 5 km deep · 91 km away
11. 1.624 km E of Tres Pinos, CaliforniaTue, Aug 15, 7:06 PM PDT · 17579 days ago · 0 km deep · 37 km away
12. 2.421 km NE of Soledad, CaliforniaWed, Aug 16, 11:07 AM PDT · 17579 days ago · 5 km deep · 33 km away
13. 1.67 km NNE of Corralitos, CaliforniaWed, Aug 16, 7:16 PM PDT · 17578 days ago · 13 km deep · 43 km away
14. 1.69 km NW of Hollister, CaliforniaWed, Aug 16, 8:28 PM PDT · 17578 days ago · 4 km deep · 18 km away
15. 2.3Central CaliforniaWed, Aug 16, 9:10 PM PDT · 17578 days ago · 2 km deep · 49 km away
16. 2.323 km NNE of San Lucas, CaliforniaWed, Aug 16, 10:43 PM PDT · 17578 days ago · 6 km deep · 73 km away
17. 2.330 km SSW of South Dos Palos, CaliforniaThu, Aug 17, 12:04 AM PDT · 17578 days ago · 6 km deep · 56 km away
18. 2.6Central CaliforniaThu, Aug 17, 7:21 AM PDT · 17578 days ago · 7 km deep · 12 km away
19. 1.86 km NNE of Ridgemark, CaliforniaFri, Aug 18, 5:03 AM PDT · 17577 days ago · 6 km deep · 16 km away
20. 2.237 km SE of Big Sur, CaliforniaFri, Aug 18, 8:14 PM PDT · 17576 days ago · 10 km deep · 85 km away
21. 1.922 km NE of San Lucas, CaliforniaSat, Aug 19, 3:33 PM PDT · 17575 days ago · 6 km deep · 76 km away
22. 2.024 km E of Tres Pinos, CaliforniaSat, Aug 19, 8:40 PM PDT · 17575 days ago · 0 km deep · 37 km away
23. 2.124 km E of Tres Pinos, CaliforniaSat, Aug 19, 8:41 PM PDT · 17575 days ago · 1 km deep · 37 km away
24. 1.821 km NE of Soledad, CaliforniaMon, Aug 21, 11:20 AM PDT · 17574 days ago · 5 km deep · 33 km away
25. 1.68 km N of Morgan Hill, CaliforniaMon, Aug 21, 1:59 PM PDT · 17573 days ago · 4 km deep · 52 km away
26. 1.72 km SW of San Juan Bautista, CaliforniaTue, Aug 22, 2:44 AM PDT · 17573 days ago · 7 km deep · 12 km away
27. 1.723 km ENE of Soledad, CaliforniaTue, Aug 22, 9:46 AM PDT · 17573 days ago · 6 km deep · 46 km away
28. 2.31 km SW of Los Altos Hills, CaliforniaTue, Aug 22, 5:07 PM PDT · 17572 days ago · 4 km deep · 92 km away
29. 2.08 km WSW of Saratoga, CaliforniaWed, Aug 23, 6:16 AM PDT · 17572 days ago · 10 km deep · 77 km away
30. 3.126 km WNW of Diablo Grande, CaliforniaThu, Aug 24, 2:04 PM PDT · 17570 days ago · 5 km deep · 82 km away
31. 1.64 km SW of Tres Pinos, CaliforniaThu, Aug 24, 4:46 PM PDT · 17570 days ago · 6 km deep · 10 km away
32. 1.78 km NE of Gilroy, CaliforniaSun, Aug 27, 3:23 AM PDT · 17568 days ago · 8 km deep · 33 km away
33. 2.23 km NNW of Hollister, CaliforniaSun, Aug 27, 7:30 AM PDT · 17568 days ago · 7 km deep · 14 km away
34. 1.53 km W of Ridgemark, CaliforniaSun, Aug 27, 5:21 PM PDT · 17567 days ago · 7 km deep · 8 km away
35. 1.721 km NE of Soledad, CaliforniaSun, Aug 27, 5:24 PM PDT · 17567 days ago · 5 km deep · 38 km away
36. 2.32 km ESE of Tres Pinos, CaliforniaSun, Aug 27, 7:40 PM PDT · 17567 days ago · 9 km deep · 15 km away
37. 3.26 km SE of Sunol, CaliforniaSun, Aug 27, 8:32 PM PDT · 17567 days ago · 10 km deep · 94 km away
38. 1.92 km ESE of Aromas, CaliforniaSun, Aug 27, 10:33 PM PDT · 17567 days ago · 7 km deep · 20 km away
39. 3.021 km NE of Soledad, CaliforniaMon, Aug 28, 12:57 PM PDT · 17567 days ago · 7 km deep · 38 km away
40. 2.115 km SE of Livermore, CaliforniaMon, Aug 28, 1:42 PM PDT · 17566 days ago · 2 km deep · 92 km away
41. 2.39 km ESE of East Foothills, CaliforniaMon, Aug 28, 4:38 PM PDT · 17566 days ago · 7 km deep · 69 km away
42. 1.79 km ESE of East Foothills, CaliforniaMon, Aug 28, 4:47 PM PDT · 17566 days ago · 8 km deep · 69 km away
43. 4.19 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:14 PM PDT · 17566 days ago · 8 km deep · 70 km away
44. 2.010 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:16 PM PDT · 17566 days ago · 8 km deep · 69 km away
45. 1.89 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:18 PM PDT · 17566 days ago · 8 km deep · 70 km away
46. 3.810 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:18 PM PDT · 17566 days ago · 8 km deep · 68 km away
47. 1.59 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:22 PM PDT · 17566 days ago · 7 km deep · 69 km away
48. 2.210 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:23 PM PDT · 17566 days ago · 7 km deep · 69 km away
49. 2.69 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:27 PM PDT · 17566 days ago · 8 km deep · 70 km away
50. 2.59 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:27 PM PDT · 17566 days ago · 5 km deep · 70 km away
51. 1.510 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:40 PM PDT · 17566 days ago · 8 km deep · 68 km away
52. 2.110 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:42 PM PDT · 17566 days ago · 7 km deep · 68 km away
53. 1.810 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:54 PM PDT · 17566 days ago · 7 km deep · 69 km away
54. 1.610 km ESE of East Foothills, CaliforniaMon, Aug 28, 7:02 PM PDT · 17566 days ago · 7 km deep · 69 km away
55. 2.010 km ESE of East Foothills, CaliforniaTue, Aug 29, 5:43 AM PDT · 17566 days ago · 8 km deep · 68 km away
56. 2.410 km ESE of East Foothills, CaliforniaTue, Aug 29, 6:47 AM PDT · 17566 days ago · 8 km deep · 69 km away
57. 1.510 km ESE of East Foothills, CaliforniaTue, Aug 29, 3:42 PM PDT · 17565 days ago · 8 km deep · 69 km away
58. 2.616 km SSE of Tres Pinos, CaliforniaTue, Aug 29, 5:24 PM PDT · 17565 days ago · 6 km deep · 21 km away
59. 1.816 km SSE of Tres Pinos, CaliforniaTue, Aug 29, 5:31 PM PDT · 17565 days ago · 6 km deep · 20 km away
60. 2.016 km SSE of Tres Pinos, CaliforniaTue, Aug 29, 5:32 PM PDT · 17565 days ago · 6 km deep · 21 km away

The first 60 of 173.

Before

1. 2.114 km SSE of Tres Pinos, CaliforniaWed, Aug 9, 2:31 PM PDT · 17585 days ago · 4 km deep · 19 km away
2. 1.624 km SE of Tres Pinos, CaliforniaTue, Aug 8, 7:41 PM PDT · 17586 days ago · 8 km deep · 32 km away
3. 2.05 km SSE of Sunol, CaliforniaTue, Aug 8, 4:19 PM PDT · 17586 days ago · 8 km deep · 95 km away
4. 2.121 km NE of Soledad, CaliforniaTue, Aug 8, 4:21 AM PDT · 17587 days ago · 3 km deep · 35 km away
5. 1.824 km SE of Tres Pinos, CaliforniaMon, Aug 7, 12:21 PM PDT · 17588 days ago · 9 km deep · 33 km away
6. 2.023 km SSW of Volta, CaliforniaMon, Aug 7, 5:34 AM PDT · 17588 days ago · 5 km deep · 39 km away
7. 2.330 km NE of Soledad, CaliforniaSun, Aug 6, 5:11 PM PDT · 17588 days ago · 6 km deep · 41 km away
8. 1.512 km SE of Livermore, CaliforniaSat, Aug 5, 7:14 PM PDT · 17589 days ago · 4 km deep · 96 km away
9. 1.65 km SSW of Gilroy, CaliforniaSat, Aug 5, 5:04 PM PDT · 17589 days ago · 6 km deep · 25 km away
10. 1.632 km E of Tres Pinos, CaliforniaThu, Aug 3, 9:41 PM PDT · 17591 days ago · 1 km deep · 44 km away
11. 1.926 km ESE of Tres Pinos, CaliforniaWed, Aug 2, 5:23 PM PDT · 17592 days ago · 0 km deep · 38 km away
12. 1.818 km SSE of Tres Pinos, CaliforniaWed, Aug 2, 12:32 PM PDT · 17593 days ago · 7 km deep · 23 km away
13. 1.72 km SW of Ridgemark, CaliforniaTue, Aug 1, 1:01 AM PDT · 17594 days ago · 7 km deep · 8 km away
14. 2.025 km NE of Soledad, CaliforniaMon, Jul 31, 6:08 PM PDT · 17594 days ago · 12 km deep · 39 km away
15. 1.621 km NE of Soledad, CaliforniaMon, Jul 31, 2:54 PM PDT · 17594 days ago · 7 km deep · 35 km away
16. 2.217 km WSW of Lockwood, CaliforniaSat, Jul 29, 4:43 PM PDT · 17596 days ago · 12 km deep · 100 km away
17. 2.03 km ESE of Tres Pinos, CaliforniaFri, Jul 28, 11:21 PM PDT · 17597 days ago · 9 km deep · 15 km away
18. 2.024 km NE of Greenfield, CaliforniaFri, Jul 28, 4:38 PM PDT · 17597 days ago · 4 km deep · 49 km away
19. 2.318 km SSE of Tres Pinos, CaliforniaFri, Jul 28, 10:13 AM PDT · 17598 days ago · 6 km deep · 23 km away
20. 2.340 km SSW of South Dos Palos, CaliforniaThu, Jul 27, 3:38 PM PDT · 17598 days ago · 4 km deep · 55 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1041566. Read Fri, Oct 2, 2026, 7:53 AM UTC.