California earthquakes

M1.6 earthquake 15 km WSW of Volta, California

A magnitude 1.6 earthquake struck 15 km WSW of Volta, California on Sun, Mar 26, 1989, 4:59 AM PST (12:59 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.5 6 km NE 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
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1989-03-26 12:59:23 UTC
Depth
5.1 km (3.2 mi), shallow
Epicenter
37.036° N, 121.084° 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 1.4 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
262°, poorly surrounded by stations
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 117 in the 60 days after this one and 61 in the 30 days before it.

After

  1. 1.916 km N of Morgan Hill, California · 13704 days ago · 5 km deep · 57 km away
  2. 1.521 km NE of Soledad, California · 13704 days ago · 8 km deep · 55 km away
  3. 1.62 km S of Los Altos Hills, California · 13704 days ago · 5 km deep · 100 km away
  4. 2.28 km SSW of Tres Pinos, California · 13704 days ago · 1 km deep · 43 km away
  5. 1.916 km SSE of Livermore, California · 13704 days ago · 7 km deep · 78 km away
  6. 1.62 km SW of San Juan Bautista, California · 13703 days ago · 6 km deep · 48 km away
  7. 3.322 km NE of San Lucas, California · 13703 days ago · 6 km deep · 91 km away
  8. 1.97 km NNE of Hollister, California · 13702 days ago · 7 km deep · 28 km away
  9. 1.87 km NNE of Hollister, California · 13702 days ago · 7 km deep · 28 km away
  10. 1.53 km NE of East Foothills, California · 13702 days ago · 2 km deep · 75 km away
  11. 1.922 km NE of Soledad, California · 13702 days ago · 3 km deep · 56 km away
  12. 1.53 km NNE of East Foothills, California · 13702 days ago · 2 km deep · 76 km away
  13. 1.910 km S of Davenport, California · 13700 days ago · 7 km deep · 98 km away
  14. 2.36 km ESE of Sunol, California · 13700 days ago · 10 km deep · 89 km away
  15. 1.84 km ESE of Pleasanton, California · 13699 days ago · 11 km deep · 95 km away
  16. 1.637 km NE of Greenfield, California · 13699 days ago · 0 km deep · 57 km away
  17. 1.615 km SSE of Livermore, California · 13698 days ago · 7 km deep · 78 km away
  18. 1.86 km NE of Ridgemark, California · 13698 days ago · 6 km deep · 29 km away
  19. 4.56 km NE of East Foothills, California · 13697 days ago · 11 km deep · 75 km away
  20. 2.16 km NE of East Foothills, California · 13697 days ago · 10 km deep · 74 km away
  21. 2.85 km SE of Tres Pinos, California · 13697 days ago · 6 km deep · 35 km away
  22. 1.56 km NE of East Foothills, California · 13697 days ago · 9 km deep · 75 km away
  23. 1.69 km ESE of East Foothills, California · 13697 days ago · 7 km deep · 67 km away
  24. 2.514 km N of Morgan Hill, California · 13696 days ago · 6 km deep · 55 km away
  25. 1.95 km NNE of East Foothills, California · 13696 days ago · 4 km deep · 77 km away
  26. 1.610 km SSW of Ridgemark, California · 13695 days ago · 5 km deep · 45 km away
  27. 2.324 km NE of Soledad, California · 13694 days ago · 4 km deep · 54 km away
  28. 2.18 km ENE of Gilroy, California · 13694 days ago · 7 km deep · 35 km away
  29. 1.68 km NE of Milpitas, California · 13694 days ago · 7 km deep · 84 km away
  30. 1.523 km ENE of Soledad, California · 13694 days ago · 3 km deep · 58 km away
  31. 2.524 km ENE of Soledad, California · 13693 days ago · 3 km deep · 60 km away
  32. 1.931 km ENE of Soledad, California · 13692 days ago · 4 km deep · 54 km away
  33. 1.623 km ENE of San Lucas, California · 13691 days ago · 6 km deep · 92 km away
  34. 2.037 km NE of Greenfield, California · 13691 days ago · 0 km deep · 57 km away
  35. 3.36 km NNE of East Foothills, California · 13691 days ago · 9 km deep · 76 km away
  36. 2.421 km NE of Soledad, California · 13691 days ago · 2 km deep · 54 km away
  37. 1.66 km NNE of East Foothills, California · 13691 days ago · 8 km deep · 76 km away
  38. 2.421 km NE of Soledad, California · 13691 days ago · 5 km deep · 51 km away
  39. 2.014 km NE of East Foothills, California · 13690 days ago · 8 km deep · 71 km away
  40. 1.55 km SE of Tres Pinos, California · 13689 days ago · 6 km deep · 35 km away
  41. 3.16 km NNE of East Foothills, California · 13687 days ago · 8 km deep · 75 km away
  42. 2.224 km ENE of San Lucas, California · 13687 days ago · 8 km deep · 95 km away
  43. 1.530 km ENE of Soledad, California · 13686 days ago · 7 km deep · 53 km away
  44. 3.321 km NE of Soledad, California · 13686 days ago · 8 km deep · 52 km away
  45. 1.922 km NE of Soledad, California · 13686 days ago · 2 km deep · 55 km away
  46. 2.5Central California · 13684 days ago · 3 km deep · 93 km away
  47. 2.622 km NNE of Soledad, California · 13684 days ago · 6 km deep · 50 km away
  48. 2.622 km NNE of Soledad, California · 13684 days ago · 5 km deep · 50 km away
  49. 2.722 km NNE of Soledad, California · 13684 days ago · 5 km deep · 50 km away
  50. 1.51 km E of Ridgemark, California · 13684 days ago · 3 km deep · 34 km away
  51. 2.422 km NNE of Soledad, California · 13684 days ago · 5 km deep · 49 km away
  52. 1.921 km NW of Coalinga, California · 13684 days ago · 8 km deep · 98 km away
  53. 1.825 km NE of Soledad, California · 13681 days ago · 8 km deep · 52 km away
  54. 1.56 km NNE of East Foothills, California · 13680 days ago · 7 km deep · 77 km away
  55. 2.023 km ENE of Soledad, California · 13680 days ago · 4 km deep · 60 km away
  56. 3.114 km N of Morgan Hill, California · 13680 days ago · 5 km deep · 55 km away
  57. 2.221 km NE of Soledad, California · 13679 days ago · 6 km deep · 54 km away
  58. 1.69 km NNE of East Foothills, California · 13678 days ago · 8 km deep · 77 km away
  59. 1.525 km NE of Greenfield, California · 13677 days ago · 8 km deep · 65 km away
  60. 1.79 km NNE of East Foothills, California · 13676 days ago · 8 km deep · 77 km away

The first 60 of 117.

Before

  1. 1.721 km NE of Soledad, California · 13705 days ago · 3 km deep · 53 km away
  2. 2.04 km W of San Juan Bautista, California · 13706 days ago · 6 km deep · 49 km away
  3. 2.121 km NE of Soledad, California · 13706 days ago · 6 km deep · 55 km away
  4. 2.321 km NE of Soledad, California · 13706 days ago · 6 km deep · 54 km away
  5. 2.221 km NE of Soledad, California · 13706 days ago · 6 km deep · 54 km away
  6. 1.916 km SSE of Livermore, California · 13707 days ago · 7 km deep · 78 km away
  7. 1.624 km NE of King City, California · 13707 days ago · 5 km deep · 73 km away
  8. 2.123 km NE of Soledad, California · 13709 days ago · 4 km deep · 52 km away
  9. 2.316 km SSE of Livermore, California · 13709 days ago · 7 km deep · 78 km away
  10. 2.216 km SSE of Livermore, California · 13709 days ago · 7 km deep · 78 km away
  11. 1.910 km ESE of East Foothills, California · 13709 days ago · 7 km deep · 65 km away
  12. 1.523 km SE of Tres Pinos, California · 13710 days ago · 10 km deep · 42 km away
  13. 2.47 km N of San Juan Bautista, California · 13710 days ago · 5 km deep · 43 km away
  14. 2.114 km N of Morgan Hill, California · 13710 days ago · 6 km deep · 56 km away
  15. 1.63 km ESE of Livermore, California · 13711 days ago · 4 km deep · 90 km away
  16. 1.719 km NNW of Coalinga, California · 13712 days ago · 10 km deep · 100 km away
  17. 1.718 km NE of East Foothills, California · 13712 days ago · 11 km deep · 70 km away
  18. 1.813 km ESE of Alum Rock, California · 13712 days ago · 7 km deep · 62 km away
  19. 2.313 km ESE of Alum Rock, California · 13712 days ago · 7 km deep · 62 km away
  20. 1.616 km SSE of Tres Pinos, California · 13712 days ago · 5 km deep · 46 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc133453. Read Sat, Oct 3, 2026, 3:34 PM UTC.