California earthquakes

M3.8 earthquake 3 km S of Three Rocks, California

A magnitude 3.8 earthquake struck 3 km S of Three Rocks, California on Sun, Dec 21, 1975, 6:29 PM PST (02:29 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M4.9 12 km ESE of Coalinga, 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
3.8 (md), minor
Local time
UTC
1975-12-22 02:29:35 UTC
Depth
6.6 km (4.1 mi), shallow
Epicenter
36.468° N, 120.395° 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 0.6 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.57
Depth from
From location
Station coverage gap
169°
Stations used
37

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.717 km E of Tres Pinos, California · 18529 days ago · 3 km deep · 76 km away
  2. 2.215 km S of Three Rocks, California · 18529 days ago · 6 km deep · 11 km away
  3. 1.622 km NNE of Soledad, California · 18528 days ago · 2 km deep · 74 km away
  4. 2.216 km E of Tres Pinos, California · 18528 days ago · 5 km deep · 76 km away
  5. 2.717 km E of Tres Pinos, California · 18528 days ago · 6 km deep · 76 km away
  6. 1.722 km NW of Parkfield, California · 18528 days ago · 3 km deep · 51 km away
  7. 3.025 km ENE of Soledad, California · 18526 days ago · 10 km deep · 59 km away
  8. 2.024 km NE of Greenfield, California · 18526 days ago · 4 km deep · 58 km away
  9. 1.924 km ENE of Soledad, California · 18526 days ago · 5 km deep · 60 km away
  10. 2.123 km NW of Parkfield, California · 18525 days ago · 3 km deep · 51 km away
  11. 1.722 km NNE of Soledad, California · 18525 days ago · 8 km deep · 75 km away
  12. 2.8Central California · 18525 days ago · 8 km deep · 51 km away
  13. 2.622 km NNE of San Ardo, California · 18523 days ago · 7 km deep · 46 km away
  14. 1.718 km NW of Parkfield, California · 18523 days ago · 5 km deep · 53 km away
  15. 2.723 km ENE of San Lucas, California · 18523 days ago · 6 km deep · 45 km away
  16. 2.624 km ENE of Soledad, California · 18523 days ago · 5 km deep · 60 km away
  17. 1.821 km NE of Soledad, California · 18523 days ago · 6 km deep · 66 km away
  18. 2.422 km NE of Soledad, California · 18521 days ago · 3 km deep · 71 km away
  19. 1.721 km NE of Soledad, California · 18520 days ago · 3 km deep · 72 km away
  20. 1.927 km ENE of Soledad, California · 18520 days ago · 7 km deep · 60 km away
  21. 1.614 km NNE of Shandon, California · 18519 days ago · 9 km deep · 76 km away
  22. 2.226 km ENE of Soledad, California · 18517 days ago · 8 km deep · 61 km away
  23. 2.224 km ENE of Soledad, California · 18516 days ago · 5 km deep · 60 km away
  24. 1.813 km SSE of Tres Pinos, California · 18516 days ago · 5 km deep · 82 km away
  25. 2.124 km ENE of Soledad, California · 18516 days ago · 5 km deep · 60 km away
  26. 1.912 km NW of Avenal, California · 18515 days ago · 9 km deep · 45 km away
  27. 2.018 km SSE of Tres Pinos, California · 18515 days ago · 6 km deep · 79 km away
  28. 2.213 km SSE of Tres Pinos, California · 18515 days ago · 5 km deep · 82 km away
  29. 1.621 km NE of Soledad, California · 18514 days ago · 7 km deep · 66 km away
  30. 3.612 km NW of Avenal, California · 18514 days ago · 9 km deep · 45 km away
  31. 1.812 km ESE of Coalinga, California · 18514 days ago · 9 km deep · 45 km away
  32. 1.511 km SE of Coalinga, California · 18514 days ago · 9 km deep · 46 km away
  33. 2.32 km WSW of Ridgemark, California · 18514 days ago · 7 km deep · 97 km away
  34. 2.312 km ESE of Coalinga, California · 18514 days ago · 9 km deep · 45 km away
  35. 2.512 km ESE of Coalinga, California · 18514 days ago · 9 km deep · 45 km away
  36. 2.812 km ESE of Coalinga, California · 18514 days ago · 9 km deep · 45 km away
  37. 1.512 km ESE of Coalinga, California · 18514 days ago · 10 km deep · 45 km away
  38. 1.612 km ESE of Coalinga, California · 18513 days ago · 9 km deep · 45 km away
  39. 3.312 km ESE of Coalinga, California · 18513 days ago · 9 km deep · 45 km away
  40. 2.812 km ESE of Coalinga, California · 18513 days ago · 9 km deep · 45 km away
  41. 3.812 km ESE of Coalinga, California · 18513 days ago · 10 km deep · 45 km away
  42. 3.012 km NW of Avenal, California · 18513 days ago · 8 km deep · 46 km away
  43. 4.912 km ESE of Coalinga, California · 18513 days ago · 10 km deep · 45 km away
  44. 2.812 km SE of Coalinga, California · 18513 days ago · 8 km deep · 46 km away
  45. 1.512 km ESE of Coalinga, California · 18513 days ago · 9 km deep · 44 km away
  46. 1.912 km SE of Coalinga, California · 18513 days ago · 8 km deep · 46 km away
  47. 2.011 km SE of Coalinga, California · 18513 days ago · 9 km deep · 45 km away
  48. 2.612 km ESE of Coalinga, California · 18513 days ago · 9 km deep · 44 km away
  49. 2.510 km NW of Avenal, California · 18513 days ago · 9 km deep · 47 km away
  50. 3.212 km ESE of Coalinga, California · 18513 days ago · 9 km deep · 44 km away
  51. 3.411 km ESE of Coalinga, California · 18513 days ago · 11 km deep · 44 km away
  52. 2.312 km ESE of Coalinga, California · 18513 days ago · 8 km deep · 45 km away
  53. 1.711 km ESE of Coalinga, California · 18513 days ago · 9 km deep · 44 km away
  54. 3.611 km ESE of Coalinga, California · 18513 days ago · 11 km deep · 43 km away
  55. 1.911 km ESE of Coalinga, California · 18513 days ago · 9 km deep · 44 km away
  56. 2.212 km ESE of Coalinga, California · 18513 days ago · 10 km deep · 44 km away
  57. 3.121 km NE of Soledad, California · 18513 days ago · 2 km deep · 70 km away
  58. 2.64 km SW of Kettleman City, California · 18513 days ago · 24 km deep · 65 km away
  59. 2.318 km W of Volta, California · 18513 days ago · 7 km deep · 93 km away
  60. 2.521 km S of Kettleman City, California · 18513 days ago · 23 km deep · 84 km away

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1028019. Read Tue, Sep 22, 2026, 8:26 AM UTC.