California earthquakes

M2.1 earthquake 34 km W of Three Rocks, California

A magnitude 2.1 earthquake struck 34 km W of Three Rocks, California on Mon, May 20, 2002, 4:15 AM PDT (11:15 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M3.8 22 km NE of Soledad, 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
2.1 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2002-05-20 11:15:30 UTC
Depth
12.8 km (7.9 mi), shallow
Epicenter
36.461° N, 120.779° 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
±0.09
Depth from
From location
Station coverage gap
112°
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: 194 in the 60 days after this one and 90 in the 30 days before it.

After

  1. 1.611 km WSW of Huron, California · 8904 days ago · 8 km deep · 61 km away
  2. 3.312 km S of Tres Pinos, California · 8904 days ago · 5 km deep · 53 km away
  3. 2.611 km S of Tres Pinos, California · 8904 days ago · 4 km deep · 54 km away
  4. 1.817 km SSE of Tres Pinos, California · 8903 days ago · 4 km deep · 47 km away
  5. 1.64 km NNW of Aromas, California · 8903 days ago · 10 km deep · 95 km away
  6. 2.412 km S of Tres Pinos, California · 8903 days ago · 4 km deep · 53 km away
  7. 1.624 km NE of Greenfield, California · 8903 days ago · 5 km deep · 25 km away
  8. 3.14 km E of Interlaken, California · 8902 days ago · 6 km deep · 98 km away
  9. 1.712 km S of Tres Pinos, California · 8902 days ago · 5 km deep · 52 km away
  10. 1.5Central California · 8902 days ago · 0 km deep · 21 km away
  11. 1.813 km SW of Tres Pinos, California · 8901 days ago · 10 km deep · 62 km away
  12. 2.113 km WSW of Gonzales, California · 8901 days ago · 29 km deep · 72 km away
  13. 1.621 km NE of Soledad, California · 8901 days ago · 6 km deep · 37 km away
  14. 2.123 km NE of King City, California · 8901 days ago · 6 km deep · 19 km away
  15. 2.718 km SSE of Tres Pinos, California · 8900 days ago · 7 km deep · 44 km away
  16. 3.822 km NE of Soledad, California · 8900 days ago · 2 km deep · 33 km away
  17. 1.722 km NE of Soledad, California · 8899 days ago · 2 km deep · 33 km away
  18. 1.910 km S of Tres Pinos, California · 8899 days ago · 5 km deep · 56 km away
  19. 2.322 km NE of Soledad, California · 8898 days ago · 2 km deep · 33 km away
  20. 2.422 km NE of Soledad, California · 8898 days ago · 2 km deep · 33 km away
  21. 1.924 km NE of Soledad, California · 8896 days ago · 3 km deep · 32 km away
  22. 1.8Central California · 8896 days ago · 3 km deep · 20 km away
  23. 2.025 km ENE of Greenfield, California · 8895 days ago · 1 km deep · 20 km away
  24. 1.826 km ENE of Greenfield, California · 8895 days ago · 0 km deep · 19 km away
  25. 2.37 km SSE of Lanare, California · 8895 days ago · 0 km deep · 78 km away
  26. 2.422 km NE of Soledad, California · 8895 days ago · 2 km deep · 33 km away
  27. 1.76 km SSE of San Juan Bautista, California · 8895 days ago · 8 km deep · 75 km away
  28. 1.525 km ENE of Greenfield, California · 8895 days ago · -1 km deep · 20 km away
  29. 2.19 km E of Gilroy, California · 8895 days ago · 5 km deep · 85 km away
  30. 1.57 km NE of Ridgemark, California · 8895 days ago · 5 km deep · 66 km away
  31. 2.45 km SSW of Gilroy, California · 8895 days ago · 6 km deep · 92 km away
  32. 2.422 km NNE of Soledad, California · 8895 days ago · 2 km deep · 41 km away
  33. 1.95 km SSW of Gilroy, California · 8895 days ago · 6 km deep · 92 km away
  34. 1.74 km SSE of Gilroy, California · 8895 days ago · 0 km deep · 89 km away
  35. 1.714 km SW of Tres Pinos, California · 8895 days ago · 8 km deep · 63 km away
  36. 2.223 km NE of San Lucas, California · 8895 days ago · 5 km deep · 20 km away
  37. 1.613 km SW of Tres Pinos, California · 8894 days ago · 10 km deep · 62 km away
  38. 1.810 km NNW of Avenal, California · 8894 days ago · 7 km deep · 68 km away
  39. 2.48 km NE of Ridgemark, California · 8894 days ago · 5 km deep · 66 km away
  40. 2.95 km E of Interlaken, California · 8894 days ago · 6 km deep · 97 km away
  41. 2.222 km NE of Soledad, California · 8894 days ago · 1 km deep · 33 km away
  42. 1.910 km NNW of Avenal, California · 8894 days ago · 8 km deep · 68 km away
  43. 2.47 km NE of Ridgemark, California · 8894 days ago · 5 km deep · 66 km away
  44. 1.911 km NNW of Avenal, California · 8893 days ago · 8 km deep · 68 km away
  45. 2.810 km NNW of Avenal, California · 8892 days ago · 8 km deep · 68 km away
  46. 1.911 km NNW of Avenal, California · 8891 days ago · 6 km deep · 67 km away
  47. 2.310 km NNW of Avenal, California · 8891 days ago · 7 km deep · 68 km away
  48. 1.629 km ESE of Tres Pinos, California · 8890 days ago · 0 km deep · 34 km away
  49. 1.515 km NW of Parkfield, California · 8890 days ago · 4 km deep · 55 km away
  50. 2.020 km SSE of Tres Pinos, California · 8890 days ago · 5 km deep · 44 km away
  51. 1.727 km ESE of Tres Pinos, California · 8890 days ago · 4 km deep · 34 km away
  52. 1.82 km ENE of San Ardo, California · 8890 days ago · 10 km deep · 49 km away
  53. 2.017 km SSE of Tres Pinos, California · 8889 days ago · 4 km deep · 47 km away
  54. 1.729 km SSW of South Dos Palos, California · 8889 days ago · 0 km deep · 28 km away
  55. 1.723 km NE of Soledad, California · 8889 days ago · 2 km deep · 31 km away
  56. 2.313 km ENE of Bradley, California · 8889 days ago · 11 km deep · 60 km away
  57. 2.313 km ENE of Bradley, California · 8889 days ago · 11 km deep · 60 km away
  58. 1.85 km SW of Gilroy, California · 8888 days ago · 6 km deep · 93 km away
  59. 1.75 km WSW of Ridgemark, California · 8887 days ago · 5 km deep · 69 km away
  60. 2.14 km NE of Coalinga, California · 8886 days ago · 14 km deep · 52 km away

The first 60 of 194.

Before

  1. 2.113 km ESE of Coalinga, California · 8904 days ago · 10 km deep · 64 km away
  2. 2.013 km ESE of Coalinga, California · 8904 days ago · 9 km deep · 64 km away
  3. 1.810 km ESE of Coalinga, California · 8905 days ago · 13 km deep · 61 km away
  4. 1.621 km NE of Soledad, California · 8905 days ago · 7 km deep · 39 km away
  5. 2.012 km E of Coalinga, California · 8906 days ago · 10 km deep · 60 km away
  6. 1.813 km S of Tres Pinos, California · 8907 days ago · 4 km deep · 51 km away
  7. 1.621 km NE of Soledad, California · 8907 days ago · 7 km deep · 35 km away
  8. 1.64 km SW of Gilroy, California · 8907 days ago · 5 km deep · 94 km away
  9. 1.65 km SW of Gilroy, California · 8907 days ago · 6 km deep · 94 km away
  10. 1.813 km S of Tres Pinos, California · 8909 days ago · 4 km deep · 52 km away
  11. 1.740 km W of Three Rocks, California · 8909 days ago · 17 km deep · 7 km away
  12. 1.95 km SSW of Gilroy, California · 8910 days ago · 6 km deep · 92 km away
  13. 2.010 km S of Tres Pinos, California · 8910 days ago · 9 km deep · 57 km away
  14. 1.75 km SSW of Gilroy, California · 8910 days ago · 6 km deep · 92 km away
  15. 1.719 km SSE of Tres Pinos, California · 8910 days ago · 7 km deep · 45 km away
  16. 1.85 km SSW of Gilroy, California · 8910 days ago · 11 km deep · 92 km away
  17. 1.75 km SW of Gilroy, California · 8910 days ago · 5 km deep · 93 km away
  18. 1.95 km SSW of Gilroy, California · 8910 days ago · 7 km deep · 92 km away
  19. 3.25 km SSW of Gilroy, California · 8910 days ago · 7 km deep · 92 km away
  20. 2.85 km SW of Gilroy, California · 8910 days ago · 6 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc21226477. Read Mon, Oct 5, 2026, 12:03 PM UTC.