California earthquakes

M3.4 earthquake 24 km NE of Greenfield, California

A magnitude 3.4 earthquake struck 24 km NE of Greenfield, California on Fri, May 9, 1975, 3:47 PM PDT (22:47 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.3 7 km SSE of Gustine, California. This one was a foreshock.

Greenfield 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
3.4 (Md, duration), minor
Magnitude from
Northern California Seismic System
Local time
UTC
1975-05-09 22:47:28 UTC
Depth
4.7 km (2.9 mi), shallow
Epicenter
36.483° 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, 0.5 km in depth
Magnitude uncertainty
±0.36
Depth from
From location
Station coverage gap
71°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 195 in the 60 days after this one and 170 in the 30 days before it.

After

  1. 2.334 km NE of San Lucas, California · 18773 days ago · 10 km deep · 35 km away
  2. 2.37 km WSW of Ridgemark, California · 18772 days ago · 6 km deep · 47 km away
  3. 2.29 km NW of Hollister, California · 18772 days ago · 5 km deep · 60 km away
  4. 3.45 km S of Gilroy, California · 18772 days ago · 7 km deep · 70 km away
  5. 2.823 km NE of Greenfield, California · 18772 days ago · 2 km deep · 2 km away
  6. 2.410 km S of Tres Pinos, California · 18772 days ago · 4 km deep · 34 km away
  7. 2.916 km SSE of Tres Pinos, California · 18772 days ago · 4 km deep · 26 km away
  8. 3.923 km NE of Soledad, California · 18771 days ago · 9 km deep · 11 km away
  9. 2.82 km ESE of San Ardo, California · 18771 days ago · 10 km deep · 55 km away
  10. 2.524 km ENE of Soledad, California · 18771 days ago · 3 km deep · 2 km away
  11. 2.31 km SE of San Ardo, California · 18771 days ago · 6 km deep · 54 km away
  12. 2.323 km SSE of Tres Pinos, California · 18771 days ago · 7 km deep · 18 km away
  13. 2.115 km SE of Tres Pinos, California · 18771 days ago · 8 km deep · 27 km away
  14. 3.223 km NW of Parkfield, California · 18770 days ago · 7 km deep · 63 km away
  15. 2.323 km NW of Parkfield, California · 18770 days ago · 6 km deep · 63 km away
  16. 2.523 km ENE of Soledad, California · 18770 days ago · 4 km deep · 3 km away
  17. 1.923 km ENE of Soledad, California · 18770 days ago · 3 km deep · 4 km away
  18. 2.630 km ENE of Soledad, California · 18769 days ago · 7 km deep · 10 km away
  19. 2.330 km ENE of Soledad, California · 18769 days ago · 6 km deep · 10 km away
  20. 2.623 km NW of Parkfield, California · 18769 days ago · 6 km deep · 62 km away
  21. 2.19 km NW of Volta, California · 18769 days ago · 2 km deep · 74 km away
  22. 2.222 km NE of Soledad, California · 18769 days ago · 5 km deep · 9 km away
  23. 2.66 km NW of Parkfield, California · 18768 days ago · 5 km deep · 79 km away
  24. 2.121 km NE of Soledad, California · 18768 days ago · 6 km deep · 9 km away
  25. 3.04 km ESE of Interlaken, California · 18768 days ago · 12 km deep · 75 km away
  26. 1.79 km NE of San Juan Bautista, California · 18768 days ago · 4 km deep · 60 km away
  27. 2.49 km NW of Hollister, California · 18768 days ago · 4 km deep · 60 km away
  28. 2.921 km NE of Soledad, California · 18768 days ago · 1 km deep · 13 km away
  29. 3.34 km W of San Juan Bautista, California · 18768 days ago · 9 km deep · 62 km away
  30. 4.028 km NE of Soledad, California · 18767 days ago · 11 km deep · 12 km away
  31. 2.627 km NE of Soledad, California · 18767 days ago · 10 km deep · 13 km away
  32. 4.121 km NNE of Soledad, California · 18767 days ago · 9 km deep · 18 km away
  33. 1.827 km NE of Soledad, California · 18766 days ago · 11 km deep · 13 km away
  34. 2.49 km ENE of Morgan Hill, California · 18766 days ago · 5 km deep · 87 km away
  35. 2.322 km ENE of Soledad, California · 18766 days ago · 8 km deep · 4 km away
  36. 2.527 km NE of Soledad, California · 18765 days ago · 11 km deep · 11 km away
  37. 3.023 km ENE of San Lucas, California · 18765 days ago · 5 km deep · 38 km away
  38. 2.628 km ENE of Soledad, California · 18765 days ago · 11 km deep · 9 km away
  39. 3.324 km ENE of Soledad, California · 18765 days ago · 3 km deep · 2 km away
  40. 2.421 km ESE of Tres Pinos, California · 18765 days ago · 0 km deep · 26 km away
  41. 2.427 km NE of Soledad, California · 18765 days ago · 10 km deep · 11 km away
  42. 2.411 km N of Morgan Hill, California · 18765 days ago · 6 km deep · 99 km away
  43. 3.314 km WNW of Oak Shores, California · 18764 days ago · 14 km deep · 76 km away
  44. 3.815 km W of Oak Shores, California · 18764 days ago · 6 km deep · 77 km away
  45. 3.17 km SSE of Gustine, California · 18764 days ago · 0 km deep · 80 km away
  46. 1.816 km SSE of Tres Pinos, California · 18763 days ago · 5 km deep · 26 km away
  47. 1.727 km ENE of Soledad, California · 18763 days ago · 8 km deep · 9 km away
  48. 3.513 km NNW of San Simeon, California · 18763 days ago · 9 km deep · 83 km away
  49. 2.97 km NNE of Interlaken, California · 18763 days ago · 10 km deep · 82 km away
  50. 3.06 km NE of Hollister, California · 18763 days ago · 4 km deep · 52 km away
  51. 2.411 km E of Gilroy, California · 18762 days ago · 4 km deep · 66 km away
  52. 2.45 km S of Gilroy, California · 18762 days ago · 6 km deep · 70 km away
  53. 3.58 km NE of San Juan Bautista, California · 18761 days ago · 5 km deep · 60 km away
  54. 2.57 km E of San Lucas, California · 18761 days ago · 0 km deep · 40 km away
  55. 2.521 km ENE of San Lucas, California · 18761 days ago · 3 km deep · 36 km away
  56. 3.712 km NW of Parkfield, California · 18761 days ago · 10 km deep · 74 km away
  57. 3.022 km ENE of San Lucas, California · 18761 days ago · 8 km deep · 38 km away
  58. 1.88 km NW of Hollister, California · 18761 days ago · 3 km deep · 60 km away
  59. 3.921 km NNE of Soledad, California · 18761 days ago · 7 km deep · 17 km away
  60. 2.722 km ENE of San Lucas, California · 18761 days ago · 8 km deep · 38 km away

The first 60 of 195.

Before

  1. 1.925 km NE of Soledad, California · 18773 days ago · 8 km deep · 13 km away
  2. 2.318 km NW of Parkfield, California · 18774 days ago · 3 km deep · 68 km away
  3. 3.42 km SW of San Juan Bautista, California · 18774 days ago · 7 km deep · 59 km away
  4. 2.68 km NE of San Juan Bautista, California · 18774 days ago · 5 km deep · 60 km away
  5. 2.524 km NE of Greenfield, California · 18774 days ago · 5 km deep · 1 km away
  6. 3.07 km WSW of Gilroy, California · 18774 days ago · 5 km deep · 77 km away
  7. 2.723 km ENE of Soledad, California · 18775 days ago · 5 km deep · 4 km away
  8. 2.45 km SW of Gilroy, California · 18775 days ago · 6 km deep · 73 km away
  9. 2.724 km NE of Greenfield, California · 18775 days ago · 7 km deep · 1 km away
  10. 2.211 km NNW of Hollister, California · 18775 days ago · 5 km deep · 62 km away
  11. 2.1Central California · 18776 days ago · 2 km deep · 61 km away
  12. 1.6Central California · 18776 days ago · 8 km deep · 12 km away
  13. 2.924 km NE of Soledad, California · 18776 days ago · 9 km deep · 11 km away
  14. 1.823 km NE of Soledad, California · 18776 days ago · 8 km deep · 11 km away
  15. 2.824 km NE of Soledad, California · 18776 days ago · 12 km deep · 12 km away
  16. 2.623 km NE of Soledad, California · 18776 days ago · 9 km deep · 9 km away
  17. 2.2Central California · 18776 days ago · 2 km deep · 10 km away
  18. 2.421 km NE of Soledad, California · 18776 days ago · 3 km deep · 10 km away
  19. 1.923 km ENE of Soledad, California · 18776 days ago · 3 km deep · 1 km away
  20. 1.623 km ENE of Soledad, California · 18776 days ago · 5 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1023821. Read Fri, Oct 2, 2026, 8:10 AM UTC.