California earthquakes

M2.3 earthquake Central California

A magnitude 2.3 earthquake struck in Central California on Tue, Oct 28, 1975, 10:04 PM PST (06:04 UTC), 5 km (3 mi) below the surface.

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

Hollister forecastMore in California

Map

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

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The earthquake

Magnitude
2.3 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1975-10-29 06:04:57 UTC
Depth
5.2 km (3.3 mi), shallow
Epicenter
36.940° N, 121.450° 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 0.2 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
47°
Stations used
42

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 185 in the 60 days after this one and 134 in the 30 days before it.

After

  1. 1.824 km NE of King City, California · 18601 days ago · 5 km deep · 75 km away
  2. 2.424 km NE of Greenfield, California · 18601 days ago · 1 km deep · 64 km away
  3. 2.010 km NNW of Hollister, California · 18601 days ago · 5 km deep · 0 km away
  4. 2.523 km ENE of King City, California · 18600 days ago · 4 km deep · 84 km away
  5. 2.58 km NE of Interlaken, California · 18600 days ago · 9 km deep · 20 km away
  6. 1.525 km SE of Livermore, California · 18600 days ago · 0 km deep · 64 km away
  7. 1.515 km SSE of Tres Pinos, California · 18600 days ago · 6 km deep · 36 km away
  8. 2.425 km NNE of King City, California · 18599 days ago · 1 km deep · 73 km away
  9. 2.07 km NNE of East Foothills, California · 18599 days ago · 10 km deep · 62 km away
  10. 2.27 km ENE of Interlaken, California · 18599 days ago · 8 km deep · 20 km away
  11. 2.315 km SSE of Tres Pinos, California · 18599 days ago · 7 km deep · 35 km away
  12. 2.815 km SSE of Tres Pinos, California · 18599 days ago · 7 km deep · 35 km away
  13. 1.75 km SE of Tres Pinos, California · 18599 days ago · 6 km deep · 26 km away
  14. 2.39 km NW of Hollister, California · 18598 days ago · 4 km deep · 2 km away
  15. 2.517 km SW of Volta, California · 18598 days ago · 0 km deep · 35 km away
  16. 2.56 km ENE of Interlaken, California · 18598 days ago · 6 km deep · 19 km away
  17. 2.422 km ENE of Soledad, California · 18597 days ago · 3 km deep · 57 km away
  18. 2.29 km NW of Hollister, California · 18597 days ago · 9 km deep · 4 km away
  19. 1.518 km SSE of Tres Pinos, California · 18597 days ago · 5 km deep · 38 km away
  20. 1.97 km W of Gilroy, California · 18597 days ago · 3 km deep · 19 km away
  21. 1.99 km NW of Hollister, California · 18597 days ago · 4 km deep · 2 km away
  22. 2.024 km NE of Greenfield, California · 18597 days ago · 7 km deep · 62 km away
  23. 2.213 km NNE of Soledad, California · 18597 days ago · 14 km deep · 46 km away
  24. 2.411 km S of Tres Pinos, California · 18596 days ago · 4 km deep · 30 km away
  25. 3.61 km SW of San Juan Bautista, California · 18596 days ago · 4 km deep · 15 km away
  26. 2.311 km S of Tres Pinos, California · 18596 days ago · 4 km deep · 30 km away
  27. 1.67 km NW of Livermore, California · 18596 days ago · 12 km deep · 94 km away
  28. 3.029 km NE of Soledad, California · 18596 days ago · 9 km deep · 52 km away
  29. 1.921 km NE of Soledad, California · 18596 days ago · 7 km deep · 49 km away
  30. 1.86 km E of Tres Pinos, California · 18595 days ago · 8 km deep · 25 km away
  31. 2.58 km NE of San Martin, California · 18595 days ago · 8 km deep · 22 km away
  32. 1.520 km SSE of Livermore, California · 18595 days ago · 0 km deep · 68 km away
  33. 2.75 km NE of Interlaken, California · 18595 days ago · 4 km deep · 22 km away
  34. 4.010 km NNW of Hollister, California · 18595 days ago · 7 km deep · 0 km away
  35. 2.910 km NNW of Hollister, California · 18595 days ago · 6 km deep · 0 km away
  36. 2.610 km NNW of Hollister, California · 18595 days ago · 5 km deep · 0 km away
  37. 1.810 km NNW of Hollister, California · 18594 days ago · 4 km deep · 0 km away
  38. 3.215 km SSE of Tres Pinos, California · 18594 days ago · 7 km deep · 35 km away
  39. 1.515 km SSE of Tres Pinos, California · 18594 days ago · 6 km deep · 35 km away
  40. 3.110 km NNW of Hollister, California · 18594 days ago · 5 km deep · 0 km away
  41. 2.310 km NNW of Hollister, California · 18594 days ago · 5 km deep · 0 km away
  42. 1.721 km NE of East Foothills, California · 18594 days ago · 3 km deep · 65 km away
  43. 1.88 km NE of San Martin, California · 18594 days ago · 3 km deep · 24 km away
  44. 2.517 km SSE of Tres Pinos, California · 18594 days ago · 9 km deep · 38 km away
  45. 3.19 km NW of Hollister, California · 18594 days ago · 4 km deep · 4 km away
  46. 2.121 km NE of Soledad, California · 18593 days ago · 3 km deep · 49 km away
  47. 2.43 km W of Livermore, California · 18593 days ago · 16 km deep · 88 km away
  48. 2.69 km NW of Hollister, California · 18593 days ago · 5 km deep · 4 km away
  49. 3.69 km NW of Hollister, California · 18593 days ago · 6 km deep · 4 km away
  50. 1.76 km E of Tres Pinos, California · 18592 days ago · 7 km deep · 25 km away
  51. 2.314 km E of Seven Trees, California · 18592 days ago · 1 km deep · 43 km away
  52. 2.425 km ENE of Greenfield, California · 18592 days ago · 4 km deep · 72 km away
  53. 2.910 km NNW of Hollister, California · 18592 days ago · 5 km deep · 0 km away
  54. 1.615 km SSE of Tres Pinos, California · 18592 days ago · 6 km deep · 35 km away
  55. 2.214 km SSE of Tres Pinos, California · 18591 days ago · 6 km deep · 34 km away
  56. 1.629 km NE of Soledad, California · 18591 days ago · 6 km deep · 54 km away
  57. 2.224 km NE of Greenfield, California · 18591 days ago · 4 km deep · 63 km away
  58. 1.727 km ENE of Soledad, California · 18590 days ago · 0 km deep · 56 km away
  59. 2.621 km NE of Soledad, California · 18590 days ago · 6 km deep · 52 km away
  60. 2.010 km NNW of Hollister, California · 18590 days ago · 5 km deep · 0 km away

The first 60 of 185.

Before

  1. 2.533 km SE of Tres Pinos, California · 18601 days ago · 5 km deep · 53 km away
  2. 2.521 km NE of Soledad, California · 18601 days ago · 3 km deep · 48 km away
  3. 2.022 km ENE of Soledad, California · 18602 days ago · 2 km deep · 54 km away
  4. 2.110 km E of Tres Pinos, California · 18603 days ago · 10 km deep · 28 km away
  5. 2.436 km NE of King City, California · 18603 days ago · 15 km deep · 73 km away
  6. 1.811 km NNE of Morgan Hill, California · 18603 days ago · 1 km deep · 35 km away
  7. 1.821 km SSE of Tres Pinos, California · 18603 days ago · 5 km deep · 41 km away
  8. 2.424 km ENE of Greenfield, California · 18603 days ago · 2 km deep · 68 km away
  9. 1.812 km S of Tres Pinos, California · 18604 days ago · 4 km deep · 31 km away
  10. 1.718 km SSE of Tres Pinos, California · 18604 days ago · 7 km deep · 38 km away
  11. 2.04 km E of Tres Pinos, California · 18604 days ago · 7 km deep · 23 km away
  12. 2.229 km NE of Soledad, California · 18604 days ago · 9 km deep · 51 km away
  13. 2.029 km NE of Soledad, California · 18604 days ago · 9 km deep · 51 km away
  14. 2.724 km NE of Greenfield, California · 18604 days ago · 3 km deep · 63 km away
  15. 3.11 km E of Ridgemark, California · 18604 days ago · 7 km deep · 17 km away
  16. 2.01 km NNE of Hollister, California · 18604 days ago · 8 km deep · 10 km away
  17. 2.28 km NW of Hollister, California · 18604 days ago · 5 km deep · 4 km away
  18. 2.54 km WSW of Gilroy, California · 18605 days ago · 6 km deep · 16 km away
  19. 2.11 km W of Tres Pinos, California · 18605 days ago · 5 km deep · 20 km away
  20. 2.415 km ENE of Gilroy, California · 18605 days ago · 7 km deep · 12 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1027225. Read Fri, Oct 2, 2026, 6:24 AM UTC.