California earthquakes

M2.1 earthquake 24 km WSW of Volta, California

A magnitude 2.1 earthquake struck 24 km WSW of Volta, California on Thu, Sep 29, 1983, 12:03 AM PDT (07:03 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.6 12 km ESE of East Foothills, 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
1983-09-29 07:03:06 UTC
Depth
0.1 km (0.1 mi), shallow
Epicenter
37.032° N, 121.189° 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, 3.2 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
97°
Stations used
58

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 107 in the 60 days after this one and 61 in the 30 days before it.

After

  1. 2.638 km SSW of South Dos Palos, California · 15709 days ago · 4 km deep · 55 km away
  2. 3.237 km SSW of South Dos Palos, California · 15709 days ago · -1 km deep · 56 km away
  3. 2.138 km SSW of South Dos Palos, California · 15709 days ago · 5 km deep · 55 km away
  4. 2.539 km SSW of South Dos Palos, California · 15709 days ago · 3 km deep · 55 km away
  5. 2.139 km SSW of South Dos Palos, California · 15709 days ago · 4 km deep · 55 km away
  6. 1.724 km NE of Greenfield, California · 15709 days ago · 7 km deep · 64 km away
  7. 1.99 km ESE of East Foothills, California · 15708 days ago · 0 km deep · 58 km away
  8. 1.536 km WSW of Mendota, California · 15707 days ago · 3 km deep · 57 km away
  9. 1.636 km SSW of South Dos Palos, California · 15707 days ago · 6 km deep · 53 km away
  10. 3.112 km W of Three Rocks, California · 15706 days ago · 10 km deep · 82 km away
  11. 1.538 km SSW of South Dos Palos, California · 15706 days ago · 4 km deep · 55 km away
  12. 1.514 km SSE of Livermore, California · 15705 days ago · 8 km deep · 74 km away
  13. 3.24 km SSE of San Juan Bautista, California · 15704 days ago · 6 km deep · 39 km away
  14. 2.54 km SSE of San Juan Bautista, California · 15704 days ago · 5 km deep · 39 km away
  15. 1.612 km S of Tres Pinos, California · 15704 days ago · 3 km deep · 41 km away
  16. 1.9Central California · 15704 days ago · 4 km deep · 37 km away
  17. 1.515 km W of Three Rocks, California · 15702 days ago · 7 km deep · 82 km away
  18. 2.39 km S of Tres Pinos, California · 15702 days ago · 4 km deep · 39 km away
  19. 1.99 km W of Volta, California · 15701 days ago · 6 km deep · 16 km away
  20. 2.58 km NE of Morgan Hill, California · 15701 days ago · 3 km deep · 39 km away
  21. 1.537 km SSW of South Dos Palos, California · 15700 days ago · 5 km deep · 54 km away
  22. 1.57 km NE of Livermore, California · 15698 days ago · 9 km deep · 89 km away
  23. 1.88 km ENE of Livermore, California · 15698 days ago · 8 km deep · 89 km away
  24. 2.521 km NE of Soledad, California · 15698 days ago · 5 km deep · 50 km away
  25. 3.17 km E of East Foothills, California · 15698 days ago · 8 km deep · 61 km away
  26. 2.67 km E of East Foothills, California · 15698 days ago · 8 km deep · 61 km away
  27. 1.637 km ENE of Greenfield, California · 15698 days ago · 14 km deep · 64 km away
  28. 3.012 km WSW of Byron, California · 15698 days ago · 12 km deep · 100 km away
  29. 1.68 km SSW of Tres Pinos, California · 15697 days ago · 7 km deep · 37 km away
  30. 2.422 km NE of Soledad, California · 15697 days ago · 4 km deep · 49 km away
  31. 2.421 km NE of Soledad, California · 15696 days ago · 5 km deep · 50 km away
  32. 1.8Central California · 15696 days ago · 6 km deep · 44 km away
  33. 2.314 km S of Mountain House, California · 15695 days ago · 9 km deep · 77 km away
  34. 2.522 km NE of Soledad, California · 15695 days ago · 7 km deep · 54 km away
  35. 1.67 km SSE of San Juan Bautista, California · 15695 days ago · 9 km deep · 41 km away
  36. 1.621 km NE of Soledad, California · 15694 days ago · 3 km deep · 53 km away
  37. 1.921 km NE of Soledad, California · 15694 days ago · 4 km deep · 53 km away
  38. 2.0Central California · 15694 days ago · 4 km deep · 64 km away
  39. 1.727 km ENE of Soledad, California · 15694 days ago · 6 km deep · 57 km away
  40. 1.74 km SW of Tres Pinos, California · 15693 days ago · 8 km deep · 33 km away
  41. 1.5Central California · 15693 days ago · 9 km deep · 33 km away
  42. 2.111 km NNE of Livermore, California · 15692 days ago · 13 km deep · 97 km away
  43. 1.93 km NE of Fremont, California · 15690 days ago · 4 km deep · 91 km away
  44. 1.921 km SW of Los Banos, California · 15690 days ago · 0 km deep · 23 km away
  45. 1.814 km E of Seven Trees, California · 15689 days ago · 7 km deep · 53 km away
  46. 1.725 km ENE of Soledad, California · 15689 days ago · 7 km deep · 55 km away
  47. 2.27 km NE of San Juan Bautista, California · 15687 days ago · 5 km deep · 30 km away
  48. 1.98 km ENE of Morgan Hill, California · 15686 days ago · 2 km deep · 37 km away
  49. 3.612 km ESE of East Foothills, California · 15685 days ago · 7 km deep · 55 km away
  50. 2.23 km W of Livermore, California · 15685 days ago · 14 km deep · 90 km away
  51. 2.43 km W of Livermore, California · 15685 days ago · 16 km deep · 91 km away
  52. 1.68 km NE of Milpitas, California · 15685 days ago · 6 km deep · 77 km away
  53. 1.91 km WSW of Dublin, California · 15685 days ago · 8 km deep · 100 km away
  54. 1.71 km WSW of Dublin, California · 15685 days ago · 8 km deep · 100 km away
  55. 1.931 km ENE of Soledad, California · 15684 days ago · 7 km deep · 53 km away
  56. 1.822 km NE of Soledad, California · 15683 days ago · 8 km deep · 53 km away
  57. 2.723 km ENE of Soledad, California · 15683 days ago · 5 km deep · 58 km away
  58. 1.931 km ENE of Soledad, California · 15682 days ago · 8 km deep · 52 km away
  59. 2.08 km SW of Ridgemark, California · 15681 days ago · 7 km deep · 37 km away
  60. 1.625 km ENE of Greenfield, California · 15681 days ago · 2 km deep · 68 km away

The first 60 of 107.

Before

  1. 1.79 km NE of Gilroy, California · 15710 days ago · 8 km deep · 27 km away
  2. 2.026 km ENE of Soledad, California · 15711 days ago · 4 km deep · 57 km away
  3. 1.55 km SW of Ridgemark, California · 15711 days ago · 10 km deep · 34 km away
  4. 3.58 km ENE of Gilroy, California · 15711 days ago · 7 km deep · 26 km away
  5. 1.937 km SSW of South Dos Palos, California · 15712 days ago · 5 km deep · 50 km away
  6. 1.828 km NE of Greenfield, California · 15712 days ago · 6 km deep · 66 km away
  7. 2.121 km NE of Soledad, California · 15712 days ago · 7 km deep · 52 km away
  8. 1.57 km SSW of Cantua Creek, California · 15712 days ago · 2 km deep · 100 km away
  9. 1.526 km ENE of Soledad, California · 15712 days ago · 6 km deep · 57 km away
  10. 2.219 km SSE of Tres Pinos, California · 15713 days ago · 4 km deep · 45 km away
  11. 1.821 km NE of Soledad, California · 15713 days ago · 6 km deep · 53 km away
  12. 2.521 km NE of Soledad, California · 15713 days ago · 7 km deep · 53 km away
  13. 2.021 km SW of Diablo Grande, California · 15714 days ago · 0 km deep · 38 km away
  14. 1.54 km WSW of Cupertino, California · 15714 days ago · 5 km deep · 85 km away
  15. 1.85 km WSW of Cupertino, California · 15714 days ago · 5 km deep · 85 km away
  16. 1.621 km NE of Soledad, California · 15714 days ago · 2 km deep · 49 km away
  17. 1.57 km NE of Aromas, California · 15715 days ago · 6 km deep · 37 km away
  18. 1.66 km NNE of San Juan Bautista, California · 15715 days ago · 5 km deep · 31 km away
  19. 2.122 km NNE of Soledad, California · 15715 days ago · 8 km deep · 48 km away
  20. 2.232 km SW of Three Rocks, California · 15716 days ago · 13 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1103939. Read Fri, Oct 2, 2026, 11:36 AM UTC.