California earthquakes

M2.3 earthquake 18 km W of Three Rocks, California

A magnitude 2.3 earthquake struck 18 km W of Three Rocks, California on Mon, Aug 12, 1991, 6:58 PM PDT (01:58 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M4.0 9 km ENE 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
2.3 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1991-08-13 01:58:43 UTC
Depth
-0.5 km (-0.3 mi), shallow
Epicenter
36.525° N, 120.601° 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 1.0 km horizontally, 3.9 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
135°
Stations used
33

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 154 in the 60 days after this one and 71 in the 30 days before it.

After

  1. 2.122 km NW of Parkfield, California · 12837 days ago · 3 km deep · 53 km away
  2. 2.814 km SSE of Tres Pinos, California · 12837 days ago · 6 km deep · 63 km away
  3. 2.616 km SSE of Tres Pinos, California · 12836 days ago · 6 km deep · 61 km away
  4. 1.57 km SSW of Huron, California · 12836 days ago · 6 km deep · 59 km away
  5. 1.923 km NE of San Ardo, California · 12836 days ago · 3 km deep · 40 km away
  6. 1.94 km ENE of Tres Pinos, California · 12836 days ago · 9 km deep · 68 km away
  7. 1.86 km WSW of San Ardo, California · 12836 days ago · 23 km deep · 67 km away
  8. 2.114 km N of Coalinga, California · 12836 days ago · 9 km deep · 35 km away
  9. 2.211 km S of Tres Pinos, California · 12834 days ago · 5 km deep · 66 km away
  10. 1.630 km ENE of Soledad, California · 12834 days ago · 7 km deep · 39 km away
  11. 2.04 km WNW of San Juan Bautista, California · 12833 days ago · 6 km deep · 95 km away
  12. 1.925 km NNE of King City, California · 12833 days ago · 1 km deep · 36 km away
  13. 1.624 km NE of Greenfield, California · 12832 days ago · 5 km deep · 41 km away
  14. 2.311 km WNW of Avenal, California · 12832 days ago · 5 km deep · 62 km away
  15. 2.311 km SSE of Tres Pinos, California · 12831 days ago · 4 km deep · 64 km away
  16. 1.73 km WNW of San Juan Bautista, California · 12831 days ago · 5 km deep · 94 km away
  17. 1.82 km E of San Ardo, California · 12831 days ago · 13 km deep · 61 km away
  18. 2.510 km SSW of Cantua Creek, California · 12830 days ago · 10 km deep · 27 km away
  19. 2.321 km NE of Soledad, California · 12830 days ago · 5 km deep · 52 km away
  20. 2.1Central California · 12829 days ago · 4 km deep · 52 km away
  21. 1.715 km SSE of Tres Pinos, California · 12829 days ago · 7 km deep · 62 km away
  22. 2.023 km ENE of San Lucas, California · 12828 days ago · 8 km deep · 38 km away
  23. 1.79 km NW of Avenal, California · 12827 days ago · 13 km deep · 63 km away
  24. 2.023 km SE of Tres Pinos, California · 12825 days ago · 8 km deep · 51 km away
  25. 1.610 km S of Tres Pinos, California · 12825 days ago · 4 km deep · 68 km away
  26. 2.111 km W of Huron, California · 12823 days ago · 15 km deep · 50 km away
  27. 1.711 km W of Huron, California · 12823 days ago · 15 km deep · 50 km away
  28. 1.59 km NNW of Avenal, California · 12823 days ago · 5 km deep · 63 km away
  29. 2.610 km WSW of Huron, California · 12820 days ago · 5 km deep · 54 km away
  30. 2.611 km WSW of Huron, California · 12820 days ago · 8 km deep · 53 km away
  31. 1.610 km WSW of Huron, California · 12820 days ago · 8 km deep · 54 km away
  32. 2.311 km WSW of Huron, California · 12820 days ago · 9 km deep · 53 km away
  33. 1.726 km SE of Tres Pinos, California · 12820 days ago · 10 km deep · 45 km away
  34. 1.727 km SE of Tres Pinos, California · 12819 days ago · 13 km deep · 45 km away
  35. 1.619 km SE of Tres Pinos, California · 12819 days ago · 7 km deep · 53 km away
  36. 1.521 km NE of Soledad, California · 12819 days ago · 3 km deep · 52 km away
  37. 1.524 km NE of Greenfield, California · 12819 days ago · 5 km deep · 38 km away
  38. 1.816 km SSE of Tres Pinos, California · 12819 days ago · 6 km deep · 61 km away
  39. 1.924 km ENE of Soledad, California · 12819 days ago · 2 km deep · 42 km away
  40. 1.610 km E of Coalinga, California · 12819 days ago · 10 km deep · 52 km away
  41. 1.76 km SW of Huron, California · 12819 days ago · 10 km deep · 56 km away
  42. 1.88 km NW of Avenal, California · 12819 days ago · 16 km deep · 63 km away
  43. 2.416 km NW of Parkfield, California · 12817 days ago · 4 km deep · 58 km away
  44. 2.614 km SSW of Ridgemark, California · 12817 days ago · 7 km deep · 77 km away
  45. 1.924 km NE of Greenfield, California · 12816 days ago · 2 km deep · 40 km away
  46. 2.511 km NW of Parkfield, California · 12816 days ago · 11 km deep · 62 km away
  47. 1.714 km SSW of Ridgemark, California · 12816 days ago · 7 km deep · 77 km away
  48. 2.214 km SSW of Ridgemark, California · 12816 days ago · 7 km deep · 77 km away
  49. 2.030 km ENE of Soledad, California · 12815 days ago · 7 km deep · 38 km away
  50. 1.63 km SSE of San Ardo, California · 12815 days ago · 11 km deep · 65 km away
  51. 1.69 km NE of Coalinga, California · 12814 days ago · 9 km deep · 47 km away
  52. 1.622 km ENE of San Ardo, California · 12813 days ago · 3 km deep · 47 km away
  53. 1.513 km SE of Tres Pinos, California · 12813 days ago · 1 km deep · 57 km away
  54. 2.116 km SSE of Tres Pinos, California · 12811 days ago · 5 km deep · 61 km away
  55. 1.516 km SSE of Tres Pinos, California · 12811 days ago · 5 km deep · 61 km away
  56. 1.514 km NNW of Coalinga, California · 12810 days ago · 6 km deep · 34 km away
  57. 2.424 km ENE of Soledad, California · 12810 days ago · 2 km deep · 41 km away
  58. 1.64 km WNW of Parkfield, California · 12810 days ago · 5 km deep · 68 km away
  59. 2.29 km NW of Avenal, California · 12806 days ago · 14 km deep · 63 km away
  60. 1.911 km S of Tres Pinos, California · 12806 days ago · 4 km deep · 66 km away

The first 60 of 154.

Before

  1. 2.626 km NE of Soledad, California · 12837 days ago · 9 km deep · 46 km away
  2. 1.97 km NE of Coalinga, California · 12838 days ago · 9 km deep · 47 km away
  3. 1.922 km NNE of Soledad, California · 12838 days ago · 2 km deep · 54 km away
  4. 1.92 km SW of San Juan Bautista, California · 12839 days ago · 7 km deep · 92 km away
  5. 1.616 km SSE of Tres Pinos, California · 12839 days ago · 7 km deep · 61 km away
  6. 1.95 km SSW of Ridgemark, California · 12839 days ago · 5 km deep · 76 km away
  7. 3.117 km SSE of Tres Pinos, California · 12840 days ago · 7 km deep · 60 km away
  8. 2.024 km NE of Greenfield, California · 12841 days ago · 4 km deep · 41 km away
  9. 1.79 km SSW of Stratford, California · 12841 days ago · 29 km deep · 79 km away
  10. 1.824 km NW of Parkfield, California · 12844 days ago · 4 km deep · 52 km away
  11. 2.023 km NW of Parkfield, California · 12844 days ago · 5 km deep · 52 km away
  12. 3.023 km NW of Parkfield, California · 12844 days ago · 6 km deep · 52 km away
  13. 1.823 km NW of Parkfield, California · 12844 days ago · 5 km deep · 52 km away
  14. 2.130 km SE of Big Sur, California · 12845 days ago · 13 km deep · 100 km away
  15. 2.721 km SSE of Tres Pinos, California · 12846 days ago · 7 km deep · 56 km away
  16. 1.826 km NE of Soledad, California · 12846 days ago · 5 km deep · 44 km away
  17. 1.812 km ENE of Big Sur, California · 12847 days ago · 15 km deep · 99 km away
  18. 1.917 km SSE of Tres Pinos, California · 12847 days ago · 4 km deep · 60 km away
  19. 1.637 km WNW of Lockwood, California · 12847 days ago · 17 km deep · 98 km away
  20. 2.438 km WNW of Lockwood, California · 12848 days ago · 16 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc227622 (also filed as ci152238). Read Mon, Oct 5, 2026, 9:05 AM UTC.