California earthquakes

M2.1 earthquake 23 km W of Three Rocks, California

A magnitude 2.1 earthquake struck 23 km W of Three Rocks, California on Fri, Mar 18, 1983, 12:34 PM PST (20:34 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M6.7 The 1983 Coalinga, California Earthquake. 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
2.1 (md), micro
Local time
UTC
1983-03-18 20:34:24 UTC
Depth
9.0 km (5.6 mi), shallow
Epicenter
36.476° N, 120.651° 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, 1.0 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
175°
Stations used
36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 196 in the 60 days after this one and 72 in the 30 days before it.

After

  1. 1.936 km SSW of South Dos Palos, California · 15900 days ago · 6 km deep · 29 km away
  2. 1.99 km ENE of Gilroy, California · 15899 days ago · 9 km deep · 97 km away
  3. 1.623 km ENE of Soledad, California · 15899 days ago · 6 km deep · 40 km away
  4. 1.922 km NE of Soledad, California · 15899 days ago · 7 km deep · 49 km away
  5. 1.61 km WSW of Hollister, California · 15899 days ago · 5 km deep · 80 km away
  6. 1.73 km SSE of San Juan Bautista, California · 15898 days ago · 3 km deep · 87 km away
  7. 3.012 km S of Stratford, California · 15898 days ago · 13 km deep · 88 km away
  8. 2.910 km SW of Kettleman City, California · 15898 days ago · 13 km deep · 82 km away
  9. 1.71 km E of San Ardo, California · 15897 days ago · 10 km deep · 55 km away
  10. 1.81 km E of San Ardo, California · 15897 days ago · 10 km deep · 55 km away
  11. 1.825 km NE of Greenfield, CA · 15897 days ago · 5 km deep · 32 km away
  12. 1.910 km NE of Coalinga, California · 15896 days ago · 11 km deep · 45 km away
  13. 1.75 km W of Paso Robles, California · 15896 days ago · 4 km deep · 95 km away
  14. 2.122 km NE of Soledad, California · 15896 days ago · 3 km deep · 49 km away
  15. 1.65 km SSW of Ridgemark, California · 15895 days ago · 9 km deep · 74 km away
  16. 1.621 km NW of Parkfield, California · 15894 days ago · 4 km deep · 49 km away
  17. 1.718 km SSE of Tres Pinos, California · 15893 days ago · 7 km deep · 55 km away
  18. 1.516 km SSE of Tres Pinos, California · 15892 days ago · 9 km deep · 59 km away
  19. 1.636 km SSW of South Dos Palos, California · 15892 days ago · 7 km deep · 30 km away
  20. 2.16 km ENE of Big Sur, California · 15892 days ago · 13 km deep · 100 km away
  21. 1.613 km ENE of Shandon, California · 15892 days ago · 10 km deep · 94 km away
  22. 1.537 km SSW of South Dos Palos, California · 15892 days ago · 3 km deep · 29 km away
  23. 2.311 km S of Tres Pinos, California · 15892 days ago · 3 km deep · 64 km away
  24. 3.137 km SSW of South Dos Palos, California · 15892 days ago · 6 km deep · 28 km away
  25. 2.037 km SSW of South Dos Palos, California · 15891 days ago · 6 km deep · 29 km away
  26. 1.610 km S of Tres Pinos, California · 15891 days ago · 2 km deep · 66 km away
  27. 1.937 km SSW of South Dos Palos, California · 15891 days ago · 4 km deep · 28 km away
  28. 1.617 km SSE of Tres Pinos, California · 15891 days ago · 6 km deep · 57 km away
  29. 3.437 km SSW of South Dos Palos, California · 15891 days ago · 7 km deep · 29 km away
  30. 2.237 km SSW of South Dos Palos, California · 15891 days ago · 6 km deep · 29 km away
  31. 2.437 km SSW of South Dos Palos, California · 15891 days ago · 3 km deep · 29 km away
  32. 1.837 km SSW of South Dos Palos, California · 15891 days ago · 7 km deep · 28 km away
  33. 2.027 km NE of Soledad, California · 15888 days ago · 8 km deep · 39 km away
  34. 1.638 km SSW of South Dos Palos, California · 15888 days ago · 6 km deep · 28 km away
  35. 2.321 km SSE of Tres Pinos, California · 15888 days ago · 4 km deep · 54 km away
  36. 2.637 km SSW of South Dos Palos, California · 15887 days ago · 7 km deep · 29 km away
  37. 2.520 km SSE of Tres Pinos, California · 15886 days ago · 8 km deep · 53 km away
  38. 1.637 km SSW of South Dos Palos, California · 15885 days ago · 1 km deep · 27 km away
  39. 2.033 km NE of San Lucas, California · 15885 days ago · 9 km deep · 17 km away
  40. 2.211 km WSW of Three Rocks, California · 15885 days ago · 12 km deep · 12 km away
  41. 1.820 km WSW of Greenfield, California · 15884 days ago · 20 km deep · 76 km away
  42. 2.323 km NE of San Lucas, California · 15884 days ago · 6 km deep · 28 km away
  43. 2.922 km NW of Parkfield, California · 15882 days ago · 5 km deep · 48 km away
  44. 1.634 km SW of South Dos Palos, California · 15881 days ago · 4 km deep · 34 km away
  45. 1.712 km WNW of Huron, California · 15881 days ago · 11 km deep · 45 km away
  46. 1.911 km NW of Avenal, California · 15880 days ago · 10 km deep · 59 km away
  47. 2.024 km ENE of Soledad, California · 15880 days ago · 2 km deep · 38 km away
  48. 2.112 km S of Tres Pinos, California · 15880 days ago · 4 km deep · 62 km away
  49. 1.86 km SSW of Selma, California · 15880 days ago · 6 km deep · 91 km away
  50. 1.811 km NE of Coalinga, California · 15880 days ago · 10 km deep · 45 km away
  51. 1.914 km WNW of Huron, California · 15879 days ago · 12 km deep · 44 km away
  52. 2.017 km SSE of Tres Pinos, California · 15879 days ago · 5 km deep · 57 km away
  53. 2.410 km NW of Avenal, California · 15879 days ago · 8 km deep · 60 km away
  54. 2.211 km NW of Avenal, California · 15879 days ago · 10 km deep · 59 km away
  55. 2.07 km NNW of Avenal, California · 15879 days ago · 9 km deep · 63 km away
  56. 2.07 km NE of Ridgemark, California · 15879 days ago · 3 km deep · 72 km away
  57. 1.65 km SSW of Coalinga, California · 15877 days ago · 4 km deep · 48 km away
  58. 1.911 km S of Tres Pinos, California · 15877 days ago · 5 km deep · 62 km away
  59. 1.612 km SSE of Tres Pinos, California · 15876 days ago · 4 km deep · 60 km away
  60. 1.714 km SSE of Tres Pinos, California · 15876 days ago · 4 km deep · 60 km away

The first 60 of 196.

Before

  1. 1.524 km ENE of Greenfield, California · 15901 days ago · -1 km deep · 32 km away
  2. 2.137 km SSW of South Dos Palos, California · 15901 days ago · 6 km deep · 28 km away
  3. 1.815 km NW of Parkfield, California · 15901 days ago · 5 km deep · 54 km away
  4. 1.513 km S of Tres Pinos, California · 15901 days ago · 3 km deep · 62 km away
  5. 1.611 km SSE of Huron, California · 15902 days ago · 0 km deep · 67 km away
  6. 1.523 km ENE of Soledad, California · 15902 days ago · 3 km deep · 38 km away
  7. 1.723 km ENE of Soledad, California · 15902 days ago · 3 km deep · 38 km away
  8. 1.910 km N of Hollister, California · 15902 days ago · 9 km deep · 86 km away
  9. 1.622 km NE of Soledad, California · 15903 days ago · 6 km deep · 50 km away
  10. 1.731 km ENE of Soledad, California · 15903 days ago · 6 km deep · 32 km away
  11. 2.322 km ENE of Soledad, California · 15904 days ago · 3 km deep · 42 km away
  12. 1.83 km ESE of Tres Pinos, California · 15904 days ago · 7 km deep · 65 km away
  13. 1.937 km SSW of South Dos Palos, California · 15906 days ago · 6 km deep · 28 km away
  14. 2.021 km NE of Soledad, California · 15907 days ago · 7 km deep · 45 km away
  15. 1.525 km SSW of Kettleman City, California · 15907 days ago · 10 km deep · 95 km away
  16. 1.735 km WSW of Three Rocks, California · 15907 days ago · 15 km deep · 13 km away
  17. 1.621 km SSE of Tres Pinos, California · 15908 days ago · 5 km deep · 54 km away
  18. 1.621 km NE of Soledad, California · 15909 days ago · 2 km deep · 48 km away
  19. 3.021 km NE of Soledad, California · 15909 days ago · 2 km deep · 48 km away
  20. 1.74 km W of San Juan Bautista, California · 15910 days ago · 5 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1089331. Read Tue, Sep 29, 2026, 8:46 AM UTC.