California earthquakes

M1.7 earthquake 26 km W of Volta, California

A magnitude 1.7 earthquake struck 26 km W of Volta, California on Thu, Dec 11, 1986, 2:27 AM PST (10:27 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M4.2 9 km ENE of Morgan Hill, 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
1.7 (md), micro
Local time
UTC
1986-12-11 10:27:18 UTC
Depth
4.1 km (2.5 mi), shallow
Epicenter
37.083° N, 121.219° 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 0.2 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
107°
Stations used
50

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 173 in the 60 days after this one and 78 in the 30 days before it.

After

  1. 2.218 km NE of East Foothills, California · 14536 days ago · 6 km deep · 63 km away
  2. 1.924 km NE of Greenfield, California · 14536 days ago · 5 km deep · 71 km away
  3. 2.05 km SW of Gilroy, California · 14536 days ago · 4 km deep · 37 km away
  4. 4.116 km SSE of Livermore, California · 14536 days ago · 2 km deep · 66 km away
  5. 1.916 km SE of Livermore, California · 14536 days ago · 2 km deep · 66 km away
  6. 1.816 km SSE of Livermore, California · 14536 days ago · 3 km deep · 66 km away
  7. 2.016 km SSE of Livermore, California · 14536 days ago · 3 km deep · 66 km away
  8. 2.016 km SSE of Livermore, California · 14536 days ago · 2 km deep · 66 km away
  9. 2.715 km SSE of Livermore, California · 14536 days ago · 2 km deep · 67 km away
  10. 2.216 km SSE of Livermore, California · 14535 days ago · 2 km deep · 66 km away
  11. 2.23 km SSE of San Juan Bautista, California · 14535 days ago · 4 km deep · 41 km away
  12. 1.58 km ENE of Hollister, California · 14535 days ago · 6 km deep · 24 km away
  13. 2.616 km SSE of Livermore, California · 14535 days ago · 2 km deep · 66 km away
  14. 3.316 km SE of Livermore, California · 14535 days ago · 3 km deep · 66 km away
  15. 1.916 km SE of Livermore, California · 14535 days ago · 2 km deep · 66 km away
  16. 1.515 km SSE of Livermore, California · 14535 days ago · 3 km deep · 66 km away
  17. 2.316 km SE of Livermore, California · 14535 days ago · 2 km deep · 66 km away
  18. 1.616 km SSE of Livermore, California · 14535 days ago · 3 km deep · 66 km away
  19. 2.05 km NNE of Tres Pinos, California · 14535 days ago · 6 km deep · 29 km away
  20. 1.816 km SE of Livermore, California · 14535 days ago · 2 km deep · 66 km away
  21. 1.516 km SE of Livermore, California · 14535 days ago · 3 km deep · 66 km away
  22. 2.213 km N of Morgan Hill, California · 14534 days ago · 4 km deep · 42 km away
  23. 1.616 km SSE of Livermore, California · 14534 days ago · 3 km deep · 66 km away
  24. 1.716 km SE of Livermore, California · 14534 days ago · 2 km deep · 66 km away
  25. 1.616 km SSE of Livermore, California · 14534 days ago · 3 km deep · 66 km away
  26. 3.116 km SSE of Livermore, California · 14534 days ago · 2 km deep · 66 km away
  27. 1.916 km SE of Livermore, California · 14534 days ago · 3 km deep · 66 km away
  28. 2.121 km NE of Soledad, California · 14534 days ago · 3 km deep · 58 km away
  29. 1.915 km SE of Livermore, California · 14533 days ago · 3 km deep · 66 km away
  30. 1.524 km NE of Greenfield, California · 14533 days ago · 5 km deep · 71 km away
  31. 1.624 km NE of Soledad, California · 14533 days ago · 8 km deep · 58 km away
  32. 1.922 km NNE of Soledad, California · 14533 days ago · 2 km deep · 53 km away
  33. 1.822 km SSE of Tres Pinos, California · 14533 days ago · 2 km deep · 53 km away
  34. 1.516 km SE of Livermore, California · 14533 days ago · 3 km deep · 66 km away
  35. 1.816 km SSE of Livermore, California · 14533 days ago · 2 km deep · 66 km away
  36. 1.616 km SSE of Livermore, California · 14533 days ago · 2 km deep · 66 km away
  37. 2.35 km SSW of Gilroy, California · 14532 days ago · 4 km deep · 35 km away
  38. 1.716 km SE of Livermore, California · 14532 days ago · 3 km deep · 66 km away
  39. 1.75 km N of Morgan Hill, California · 14532 days ago · 5 km deep · 40 km away
  40. 1.724 km NE of Greenfield, California · 14532 days ago · 5 km deep · 71 km away
  41. 1.85 km N of Morgan Hill, California · 14532 days ago · 4 km deep · 40 km away
  42. 2.016 km SE of Livermore, California · 14532 days ago · 2 km deep · 66 km away
  43. 1.731 km ENE of Soledad, California · 14532 days ago · 9 km deep · 61 km away
  44. 1.55 km SSE of Byron, California · 14531 days ago · 10 km deep · 89 km away
  45. 1.822 km SSW of Los Banos, California · 14531 days ago · 0 km deep · 34 km away
  46. 1.59 km SSW of Davenport, California · 14531 days ago · 1 km deep · 90 km away
  47. 1.519 km SSE of Tres Pinos, California · 14530 days ago · 8 km deep · 51 km away
  48. 2.815 km SSE of Tres Pinos, California · 14530 days ago · 3 km deep · 48 km away
  49. 2.56 km NNE of Interlaken, California · 14530 days ago · 11 km deep · 44 km away
  50. 1.94 km SSE of Byron, California · 14529 days ago · 10 km deep · 90 km away
  51. 1.623 km ENE of Soledad, California · 14529 days ago · 4 km deep · 66 km away
  52. 1.716 km SSE of Livermore, California · 14527 days ago · 3 km deep · 66 km away
  53. 3.68 km N of East Foothills, California · 14527 days ago · 7 km deep · 66 km away
  54. 2.26 km NNE of Interlaken, California · 14527 days ago · 10 km deep · 44 km away
  55. 1.715 km SE of Livermore, California · 14527 days ago · 4 km deep · 66 km away
  56. 2.017 km WSW of Three Rocks, California · 14526 days ago · 6 km deep · 89 km away
  57. 1.729 km ENE of Soledad, California · 14526 days ago · 11 km deep · 60 km away
  58. 1.816 km SE of Livermore, California · 14526 days ago · 2 km deep · 66 km away
  59. 2.016 km SSE of Livermore, California · 14525 days ago · 2 km deep · 66 km away
  60. 1.816 km SSE of Livermore, California · 14525 days ago · 2 km deep · 66 km away

The first 60 of 173.

Before

  1. 3.016 km SSE of Livermore, California · 14536 days ago · 2 km deep · 66 km away
  2. 1.69 km NNE of Hollister, California · 14536 days ago · 7 km deep · 21 km away
  3. 2.024 km NE of Greenfield, California · 14537 days ago · 5 km deep · 71 km away
  4. 1.716 km SSE of Livermore, California · 14537 days ago · 2 km deep · 66 km away
  5. 1.624 km NE of Greenfield, California · 14537 days ago · 5 km deep · 71 km away
  6. 1.81 km ESE of Davenport, California · 14537 days ago · 4 km deep · 85 km away
  7. 2.613 km NE of East Foothills, California · 14537 days ago · 9 km deep · 62 km away
  8. 2.824 km NE of Greenfield, California · 14537 days ago · 7 km deep · 71 km away
  9. 2.112 km NNW of Big Sur, California · 14538 days ago · 4 km deep · 98 km away
  10. 1.83 km N of East Foothills, California · 14538 days ago · 0 km deep · 64 km away
  11. 2.08 km ENE of Hollister, California · 14538 days ago · 6 km deep · 24 km away
  12. 1.59 km ESE of Tres Pinos, California · 14539 days ago · 0 km deep · 37 km away
  13. 2.07 km NNE of Tres Pinos, California · 14539 days ago · 8 km deep · 26 km away
  14. 2.124 km NE of Greenfield, California · 14540 days ago · 5 km deep · 70 km away
  15. 2.132 km ENE of Soledad, California · 14540 days ago · 7 km deep · 62 km away
  16. 2.325 km NE of Soledad, California · 14540 days ago · 8 km deep · 55 km away
  17. 1.66 km SSW of Tres Pinos, California · 14540 days ago · 4 km deep · 41 km away
  18. 1.79 km NE of San Martin, California · 14541 days ago · 8 km deep · 29 km away
  19. 1.88 km ENE of Tres Pinos, California · 14541 days ago · 8 km deep · 30 km away
  20. 2.115 km N of Morgan Hill, California · 14541 days ago · 6 km deep · 43 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc89929. Read Mon, Sep 28, 2026, 3:21 AM UTC.