California earthquakes

M2.5 earthquake 17 km SW of Volta, California

A magnitude 2.5 earthquake struck 17 km SW of Volta, California on Fri, Oct 31, 1975, 10:13 PM PST (06:13 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M4.4 9 km NNW of Hollister, California. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1975-11-01 06:13:28 UTC
Depth
0.4 km (0.2 mi), shallow
Epicenter
36.983° N, 121.062° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.3 km horizontally, 7.7 km in depth
Magnitude uncertainty
±0.27
Depth from
From location
Station coverage gap
139°
Stations used
41

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 184 in the 60 days after this one and 136 in the 30 days before it.

After

  1. 2.56 km ENE of Interlaken, California · 18600 days ago · 6 km deep · 53 km away
  2. 2.422 km ENE of Soledad, California · 18600 days ago · 3 km deep · 52 km away
  3. 2.29 km NW of Hollister, California · 18600 days ago · 9 km deep · 37 km away
  4. 1.518 km SSE of Tres Pinos, California · 18600 days ago · 5 km deep · 42 km away
  5. 1.97 km W of Gilroy, California · 18599 days ago · 3 km deep · 53 km away
  6. 1.99 km NW of Hollister, California · 18599 days ago · 4 km deep · 36 km away
  7. 2.024 km NE of Greenfield, California · 18599 days ago · 7 km deep · 56 km away
  8. 2.213 km NNE of Soledad, California · 18599 days ago · 14 km deep · 52 km away
  9. 2.411 km S of Tres Pinos, California · 18599 days ago · 4 km deep · 40 km away
  10. 3.61 km SW of San Juan Bautista, California · 18599 days ago · 4 km deep · 46 km away
  11. 2.311 km S of Tres Pinos, California · 18599 days ago · 4 km deep · 40 km away
  12. 3.029 km NE of Soledad, California · 18599 days ago · 9 km deep · 44 km away
  13. 1.921 km NE of Soledad, California · 18599 days ago · 7 km deep · 47 km away
  14. 1.86 km E of Tres Pinos, California · 18598 days ago · 8 km deep · 27 km away
  15. 2.58 km NE of San Martin, California · 18598 days ago · 8 km deep · 44 km away
  16. 1.520 km SSE of Livermore, California · 18598 days ago · 0 km deep · 80 km away
  17. 2.75 km NE of Interlaken, California · 18598 days ago · 4 km deep · 56 km away
  18. 4.010 km NNW of Hollister, California · 18597 days ago · 7 km deep · 35 km away
  19. 2.910 km NNW of Hollister, California · 18597 days ago · 6 km deep · 35 km away
  20. 2.610 km NNW of Hollister, California · 18597 days ago · 5 km deep · 35 km away
  21. 1.810 km NNW of Hollister, California · 18597 days ago · 4 km deep · 35 km away
  22. 3.215 km SSE of Tres Pinos, California · 18597 days ago · 7 km deep · 41 km away
  23. 1.515 km SSE of Tres Pinos, California · 18597 days ago · 6 km deep · 42 km away
  24. 3.110 km NNW of Hollister, California · 18597 days ago · 5 km deep · 35 km away
  25. 2.310 km NNW of Hollister, California · 18597 days ago · 5 km deep · 35 km away
  26. 1.721 km NE of East Foothills, California · 18597 days ago · 3 km deep · 77 km away
  27. 1.88 km NE of San Martin, California · 18597 days ago · 3 km deep · 47 km away
  28. 2.517 km SSE of Tres Pinos, California · 18596 days ago · 9 km deep · 40 km away
  29. 3.19 km NW of Hollister, California · 18596 days ago · 4 km deep · 37 km away
  30. 2.121 km NE of Soledad, California · 18596 days ago · 3 km deep · 47 km away
  31. 2.69 km NW of Hollister, California · 18596 days ago · 5 km deep · 37 km away
  32. 3.69 km NW of Hollister, California · 18595 days ago · 6 km deep · 37 km away
  33. 1.76 km E of Tres Pinos, California · 18595 days ago · 7 km deep · 27 km away
  34. 2.314 km E of Seven Trees, California · 18595 days ago · 1 km deep · 64 km away
  35. 2.425 km ENE of Greenfield, California · 18594 days ago · 4 km deep · 64 km away
  36. 2.910 km NNW of Hollister, California · 18594 days ago · 5 km deep · 35 km away
  37. 1.615 km SSE of Tres Pinos, California · 18594 days ago · 6 km deep · 41 km away
  38. 2.214 km SSE of Tres Pinos, California · 18594 days ago · 6 km deep · 41 km away
  39. 1.629 km NE of Soledad, California · 18594 days ago · 6 km deep · 45 km away
  40. 2.224 km NE of Greenfield, California · 18593 days ago · 4 km deep · 56 km away
  41. 1.727 km ENE of Soledad, California · 18593 days ago · 0 km deep · 48 km away
  42. 2.621 km NE of Soledad, California · 18593 days ago · 6 km deep · 49 km away
  43. 2.010 km NNW of Hollister, California · 18593 days ago · 5 km deep · 35 km away
  44. 1.612 km SSE of Livermore, California · 18592 days ago · 4 km deep · 88 km away
  45. 3.021 km NE of East Foothills, California · 18592 days ago · 4 km deep · 77 km away
  46. 3.38 km SSE of San Juan Bautista, California · 18592 days ago · 9 km deep · 46 km away
  47. 2.512 km SE of Sunol, California · 18592 days ago · 7 km deep · 88 km away
  48. 2.215 km E of Seven Trees, California · 18592 days ago · 8 km deep · 64 km away
  49. 2.52 km S of San Juan Bautista, California · 18591 days ago · 6 km deep · 46 km away
  50. 2.19 km NE of San Juan Bautista, California · 18591 days ago · 4 km deep · 38 km away
  51. 2.921 km NE of Soledad, California · 18591 days ago · 6 km deep · 45 km away
  52. 2.118 km NE of East Foothills, California · 18590 days ago · 9 km deep · 78 km away
  53. 1.86 km SE of Cambrian Park, California · 18590 days ago · 9 km deep · 77 km away
  54. 2.213 km S of Tres Pinos, California · 18590 days ago · 4 km deep · 41 km away
  55. 2.818 km NE of East Foothills, California · 18590 days ago · 9 km deep · 78 km away
  56. 2.330 km ENE of Soledad, California · 18590 days ago · 7 km deep · 45 km away
  57. 2.68 km NW of Hollister, California · 18590 days ago · 6 km deep · 37 km away
  58. 1.929 km NE of Soledad, California · 18590 days ago · 9 km deep · 44 km away
  59. 2.210 km NNW of Hollister, California · 18589 days ago · 5 km deep · 35 km away
  60. 1.823 km NNE of San Lucas, California · 18589 days ago · 7 km deep · 76 km away

The first 60 of 184.

Before

  1. 2.39 km NW of Hollister, California · 18601 days ago · 4 km deep · 36 km away
  2. 1.75 km SE of Tres Pinos, California · 18601 days ago · 6 km deep · 32 km away
  3. 2.815 km SSE of Tres Pinos, California · 18602 days ago · 7 km deep · 41 km away
  4. 2.315 km SSE of Tres Pinos, California · 18602 days ago · 7 km deep · 41 km away
  5. 2.27 km ENE of Interlaken, California · 18602 days ago · 8 km deep · 54 km away
  6. 2.07 km NNE of East Foothills, California · 18602 days ago · 10 km deep · 81 km away
  7. 2.425 km NNE of King City, California · 18602 days ago · 1 km deep · 64 km away
  8. 1.515 km SSE of Tres Pinos, California · 18602 days ago · 6 km deep · 41 km away
  9. 1.525 km SE of Livermore, California · 18603 days ago · 0 km deep · 74 km away
  10. 2.58 km NE of Interlaken, California · 18603 days ago · 9 km deep · 53 km away
  11. 2.523 km ENE of King City, California · 18603 days ago · 4 km deep · 74 km away
  12. 2.010 km NNW of Hollister, California · 18603 days ago · 5 km deep · 35 km away
  13. 2.424 km NE of Greenfield, California · 18604 days ago · 1 km deep · 57 km away
  14. 1.824 km NE of King City, California · 18604 days ago · 5 km deep · 66 km away
  15. 2.3Central California · 18604 days ago · 5 km deep · 35 km away
  16. 2.533 km SE of Tres Pinos, California · 18604 days ago · 5 km deep · 41 km away
  17. 2.521 km NE of Soledad, California · 18604 days ago · 3 km deep · 47 km away
  18. 2.022 km ENE of Soledad, California · 18605 days ago · 2 km deep · 51 km away
  19. 2.110 km E of Tres Pinos, California · 18605 days ago · 10 km deep · 26 km away
  20. 2.436 km NE of King City, California · 18606 days ago · 15 km deep · 59 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1027275. Read Sun, Oct 4, 2026, 11:56 PM UTC.