California earthquakes

M1.9 earthquake 23 km WSW of Volta, California

A magnitude 1.9 earthquake struck 23 km WSW of Volta, California on Wed, Dec 10, 1975, 7:28 PM PST (03:28 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.9 30 km NE of Soledad, 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1975-12-11 03:28:50 UTC
Depth
4.0 km (2.5 mi), shallow
Epicenter
37.000° N, 121.161° 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, 1.6 km in depth
Magnitude uncertainty
±0.32
Depth from
From location
Station coverage gap
151°
Stations used
26

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 188 in the 60 days after this one and 121 in the 30 days before it.

After

  1. 1.96 km NE of East Foothills, California · 18558 days ago · 6 km deep · 70 km away
  2. 1.629 km SE of Tres Pinos, California · 18557 days ago · 8 km deep · 43 km away
  3. 3.25 km SW of Three Rocks, California · 18556 days ago · 6 km deep · 88 km away
  4. 2.017 km E of Tres Pinos, California · 18556 days ago · 5 km deep · 21 km away
  5. 1.612 km S of Tres Pinos, California · 18556 days ago · 4 km deep · 38 km away
  6. 3.33 km W of San Juan Bautista, California · 18555 days ago · 7 km deep · 41 km away
  7. 2.73 km S of San Juan Bautista, California · 18555 days ago · 6 km deep · 39 km away
  8. 1.530 km ENE of Soledad, California · 18555 days ago · 7 km deep · 49 km away
  9. 2.121 km NE of Soledad, California · 18555 days ago · 7 km deep · 51 km away
  10. 2.019 km E of East Foothills, California · 18554 days ago · 4 km deep · 57 km away
  11. 2.217 km SW of Gustine, California · 18554 days ago · 5 km deep · 17 km away
  12. 2.221 km ENE of Soledad, California · 18554 days ago · 5 km deep · 53 km away
  13. 2.19 km ESE of East Foothills, California · 18554 days ago · 5 km deep · 63 km away
  14. 2.321 km NNE of Soledad, California · 18554 days ago · 6 km deep · 46 km away
  15. 2.424 km NE of Soledad, California · 18553 days ago · 10 km deep · 46 km away
  16. 1.924 km NE of Soledad, California · 18553 days ago · 10 km deep · 46 km away
  17. 2.324 km NE of Greenfield, California · 18552 days ago · 5 km deep · 58 km away
  18. 1.58 km SSW of Tres Pinos, California · 18552 days ago · 2 km deep · 36 km away
  19. 1.811 km S of Tres Pinos, California · 18552 days ago · 4 km deep · 37 km away
  20. 2.422 km ENE of Soledad, California · 18551 days ago · 3 km deep · 53 km away
  21. 1.812 km N of Morgan Hill, California · 18551 days ago · 6 km deep · 50 km away
  22. 2.824 km NE of Soledad, California · 18550 days ago · 11 km deep · 48 km away
  23. 2.117 km E of Tres Pinos, California · 18550 days ago · 6 km deep · 21 km away
  24. 2.59 km NE of San Martin, California · 18549 days ago · 8 km deep · 37 km away
  25. 2.12 km SW of Monterey, California · 18549 days ago · 10 km deep · 81 km away
  26. 2.12 km NNW of Del Monte Forest, California · 18549 days ago · 2 km deep · 84 km away
  27. 2.00 km ENE of Del Monte Forest, California · 18549 days ago · 3 km deep · 83 km away
  28. 2.35 km WSW of Gilroy, California · 18549 days ago · 3 km deep · 41 km away
  29. 2.37 km NNE of San Juan Bautista, California · 18549 days ago · 5 km deep · 32 km away
  30. 1.812 km S of Tres Pinos, California · 18548 days ago · 5 km deep · 38 km away
  31. 1.69 km NE of San Martin, California · 18548 days ago · 5 km deep · 39 km away
  32. 3.930 km NE of Soledad, California · 18548 days ago · 6 km deep · 46 km away
  33. 1.830 km NE of Soledad, California · 18548 days ago · 6 km deep · 47 km away
  34. 2.222 km ENE of Soledad, California · 18548 days ago · 5 km deep · 55 km away
  35. 2.27 km SSW of Tres Pinos, California · 18547 days ago · 5 km deep · 35 km away
  36. 3.83 km S of Three Rocks, California · 18547 days ago · 7 km deep · 90 km away
  37. 2.39 km S of Tres Pinos, California · 18547 days ago · 4 km deep · 37 km away
  38. 1.814 km N of Morgan Hill, California · 18546 days ago · 7 km deep · 51 km away
  39. 2.624 km NE of Greenfield, California · 18546 days ago · 5 km deep · 58 km away
  40. 2.123 km NE of King City, California · 18546 days ago · 3 km deep · 76 km away
  41. 2.525 km ENE of Greenfield, California · 18546 days ago · 2 km deep · 65 km away
  42. 2.223 km NE of King City, California · 18545 days ago · 2 km deep · 76 km away
  43. 1.924 km NE of Greenfield, California · 18545 days ago · 5 km deep · 60 km away
  44. 2.722 km ESE of Tres Pinos, California · 18544 days ago · 0 km deep · 31 km away
  45. 3.215 km E of Seven Trees, California · 18544 days ago · 6 km deep · 55 km away
  46. 1.99 km NW of Hollister, California · 18543 days ago · 6 km deep · 29 km away
  47. 2.015 km E of Seven Trees, California · 18543 days ago · 6 km deep · 55 km away
  48. 1.611 km ESE of Seven Trees, California · 18543 days ago · 4 km deep · 57 km away
  49. 2.26 km SE of Sunol, California · 18543 days ago · 6 km deep · 85 km away
  50. 2.522 km NNE of Soledad, California · 18543 days ago · 9 km deep · 44 km away
  51. 2.427 km NE of Soledad, California · 18542 days ago · 9 km deep · 49 km away
  52. 2.724 km ENE of Soledad, California · 18542 days ago · 5 km deep · 57 km away
  53. 2.015 km NE of East Foothills, California · 18542 days ago · 6 km deep · 71 km away
  54. 2.124 km ENE of Soledad, California · 18542 days ago · 5 km deep · 57 km away
  55. 3.07 km NW of Hollister, California · 18542 days ago · 8 km deep · 28 km away
  56. 2.415 km SSW of Santa Cruz, California · 18541 days ago · 1 km deep · 85 km away
  57. 1.910 km ESE of Seven Trees, California · 18541 days ago · 3 km deep · 57 km away
  58. 2.924 km NE of King City, California · 18541 days ago · 2 km deep · 71 km away
  59. 3.17 km SSW of Cantua Creek, California · 18541 days ago · 4 km deep · 95 km away
  60. 2.314 km E of Seven Trees, California · 18541 days ago · 7 km deep · 58 km away

The first 60 of 188.

Before

  1. 2.822 km ENE of San Lucas, California · 18558 days ago · 7 km deep · 92 km away
  2. 1.94 km WNW of Hollister, California · 18559 days ago · 8 km deep · 29 km away
  3. 2.821 km NE of Soledad, California · 18559 days ago · 3 km deep · 48 km away
  4. 2.416 km E of Tres Pinos, California · 18559 days ago · 5 km deep · 21 km away
  5. 2.011 km SSE of Livermore, California · 18560 days ago · 5 km deep · 81 km away
  6. 3.822 km ENE of Soledad, California · 18560 days ago · 6 km deep · 52 km away
  7. 1.64 km SSW of Gilroy, California · 18560 days ago · 7 km deep · 39 km away
  8. 1.99 km NNE of Hollister, California · 18561 days ago · 3 km deep · 20 km away
  9. 2.523 km ENE of San Lucas, California · 18561 days ago · 8 km deep · 94 km away
  10. 2.021 km SSE of Tres Pinos, California · 18561 days ago · 5 km deep · 43 km away
  11. 1.721 km SSE of Tres Pinos, California · 18561 days ago · 5 km deep · 43 km away
  12. 2.121 km SSE of Tres Pinos, California · 18561 days ago · 5 km deep · 43 km away
  13. 1.99 km ESE of East Foothills, California · 18561 days ago · 2 km deep · 62 km away
  14. 1.621 km SE of Tres Pinos, California · 18561 days ago · 11 km deep · 37 km away
  15. 2.221 km NE of Soledad, California · 18562 days ago · 2 km deep · 46 km away
  16. 1.912 km ESE of Tres Pinos, California · 18562 days ago · 8 km deep · 28 km away
  17. 1.821 km NE of Soledad, California · 18562 days ago · 2 km deep · 46 km away
  18. 2.34 km SSW of Gilroy, California · 18562 days ago · 6 km deep · 38 km away
  19. 2.624 km ENE of San Lucas, California · 18563 days ago · 7 km deep · 92 km away
  20. 2.721 km NE of Soledad, California · 18563 days ago · 6 km deep · 48 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1027895. Read Thu, Oct 1, 2026, 9:52 PM UTC.