California earthquakes

M1.9 earthquake 23 km W of Volta, California

A magnitude 1.9 earthquake struck 23 km W of Volta, California on Mon, Dec 10, 1990, 7:59 AM PST (15:59 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M3.5 31 km SE of Tres Pinos, 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-12-10 15:59:47 UTC
Depth
4.2 km (2.6 mi), shallow
Epicenter
37.059° N, 121.182° 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, 0.9 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
136°
Stations used
38

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 114 in the 60 days after this one and 77 in the 30 days before it.

After

  1. 1.927 km SE of Tres Pinos, California · 13083 days ago · 7 km deep · 49 km away
  2. 2.021 km NE of Soledad, California · 13083 days ago · 3 km deep · 55 km away
  3. 2.030 km W of Three Rocks, California · 13081 days ago · 8 km deep · 71 km away
  4. 1.9Central California · 13081 days ago · 4 km deep · 43 km away
  5. 1.610 km S of Tres Pinos, California · 13081 days ago · 4 km deep · 43 km away
  6. 1.63 km ESE of Union City, California · 13081 days ago · 3 km deep · 92 km away
  7. 2.010 km ESE of East Foothills, California · 13080 days ago · 7 km deep · 56 km away
  8. 2.424 km NE of Greenfield, California · 13079 days ago · 7 km deep · 66 km away
  9. 1.63 km NNW of Aromas, California · 13079 days ago · 8 km deep · 45 km away
  10. 1.935 km W of Three Rocks, California · 13079 days ago · 0 km deep · 68 km away
  11. 1.921 km NNE of Soledad, California · 13077 days ago · 8 km deep · 52 km away
  12. 1.611 km ESE of East Foothills, California · 13076 days ago · 7 km deep · 55 km away
  13. 1.611 km ESE of East Foothills, California · 13076 days ago · 7 km deep · 55 km away
  14. 2.23 km WNW of San Juan Bautista, California · 13075 days ago · 7 km deep · 41 km away
  15. 1.82 km NNE of Day Valley, California · 13075 days ago · 12 km deep · 59 km away
  16. 1.824 km NE of Greenfield, California · 13074 days ago · 5 km deep · 65 km away
  17. 1.524 km NE of Greenfield, California · 13074 days ago · 6 km deep · 66 km away
  18. 1.52 km WSW of San Juan Bautista, California · 13074 days ago · 8 km deep · 42 km away
  19. 1.71 km WSW of San Juan Bautista, California · 13074 days ago · 4 km deep · 41 km away
  20. 2.811 km S of Tres Pinos, California · 13073 days ago · 4 km deep · 43 km away
  21. 1.915 km SSE of Tres Pinos, California · 13073 days ago · 5 km deep · 46 km away
  22. 1.512 km S of Tres Pinos, California · 13073 days ago · 2 km deep · 44 km away
  23. 2.111 km S of Tres Pinos, California · 13073 days ago · 4 km deep · 43 km away
  24. 2.813 km N of Morgan Hill, California · 13072 days ago · 4 km deep · 45 km away
  25. 1.622 km NE of San Lucas, California · 13071 days ago · 7 km deep · 93 km away
  26. 2.82 km SSW of San Juan Bautista, California · 13070 days ago · 4 km deep · 41 km away
  27. 3.02 km SW of San Juan Bautista, California · 13070 days ago · 5 km deep · 42 km away
  28. 2.12 km S of San Juan Bautista, California · 13070 days ago · 4 km deep · 41 km away
  29. 1.613 km N of Morgan Hill, California · 13070 days ago · 3 km deep · 46 km away
  30. 2.76 km E of East Foothills, California · 13069 days ago · 5 km deep · 62 km away
  31. 1.61 km S of Los Altos Hills, California · 13069 days ago · 5 km deep · 91 km away
  32. 1.89 km E of San Martin, California · 13068 days ago · 8 km deep · 29 km away
  33. 2.311 km S of Tres Pinos, California · 13067 days ago · 4 km deep · 43 km away
  34. 2.65 km SE of Aromas, California · 13067 days ago · 7 km deep · 43 km away
  35. 1.524 km NE of Greenfield, California · 13066 days ago · 5 km deep · 66 km away
  36. 1.721 km NE of Soledad, California · 13065 days ago · 7 km deep · 56 km away
  37. 1.911 km S of Tres Pinos, California · 13065 days ago · 4 km deep · 43 km away
  38. 2.24 km ESE of Interlaken, California · 13064 days ago · 10 km deep · 46 km away
  39. 1.624 km NE of Greenfield, California · 13064 days ago · 6 km deep · 65 km away
  40. 1.82 km W of Monte Sereno, California · 13064 days ago · 8 km deep · 77 km away
  41. 1.624 km NE of Soledad, California · 13063 days ago · 9 km deep · 53 km away
  42. 1.84 km SE of Aromas, California · 13063 days ago · 7 km deep · 43 km away
  43. 1.64 km SE of Aromas, California · 13063 days ago · 7 km deep · 43 km away
  44. 1.85 km SE of Aromas, California · 13063 days ago · 7 km deep · 43 km away
  45. 1.94 km WNW of San Juan Bautista, California · 13063 days ago · 5 km deep · 43 km away
  46. 2.213 km N of Morgan Hill, California · 13063 days ago · 4 km deep · 46 km away
  47. 1.915 km SSE of Livermore, California · 13063 days ago · 8 km deep · 71 km away
  48. 3.13 km W of San Juan Bautista, California · 13062 days ago · 5 km deep · 42 km away
  49. 2.112 km ESE of East Foothills, California · 13062 days ago · 6 km deep · 55 km away
  50. 1.94 km ESE of Aromas, California · 13062 days ago · 7 km deep · 43 km away
  51. 1.69 km SSW of Tres Pinos, California · 13061 days ago · 3 km deep · 42 km away
  52. 2.18 km NE of Milpitas, California · 13061 days ago · 8 km deep · 74 km away
  53. 2.024 km ENE of Soledad, California · 13061 days ago · 4 km deep · 63 km away
  54. 2.312 km S of Tres Pinos, California · 13060 days ago · 5 km deep · 44 km away
  55. 2.17 km W of Volta, California · 13060 days ago · 7 km deep · 16 km away
  56. 2.74 km ESE of Aromas, California · 13059 days ago · 6 km deep · 43 km away
  57. 1.95 km NNW of Aromas, California · 13058 days ago · 10 km deep · 46 km away
  58. 1.67 km NNW of Day Valley, California · 13058 days ago · 12 km deep · 63 km away
  59. 2.53 km ESE of Aromas, California · 13058 days ago · 6 km deep · 43 km away
  60. 1.67 km NE of Hollister, California · 13057 days ago · 6 km deep · 23 km away

The first 60 of 114.

Before

  1. 2.424 km NE of Greenfield, California · 13084 days ago · 2 km deep · 68 km away
  2. 1.914 km SSE of Tres Pinos, California · 13084 days ago · 6 km deep · 45 km away
  3. 2.04 km WNW of San Juan Bautista, California · 13085 days ago · 6 km deep · 42 km away
  4. 1.512 km S of Tres Pinos, California · 13086 days ago · 2 km deep · 44 km away
  5. 1.64 km E of Interlaken, California · 13087 days ago · 11 km deep · 46 km away
  6. 1.95 km NNE of Tres Pinos, California · 13087 days ago · 5 km deep · 27 km away
  7. 1.924 km SE of Tres Pinos, California · 13087 days ago · 7 km deep · 50 km away
  8. 1.92 km SSW of Davenport, California · 13087 days ago · 11 km deep · 91 km away
  9. 1.62 km SSW of Davenport, California · 13087 days ago · 12 km deep · 91 km away
  10. 1.66 km NE of Day Valley, California · 13088 days ago · 7 km deep · 55 km away
  11. 1.521 km NE of Soledad, California · 13088 days ago · 7 km deep · 53 km away
  12. 2.916 km SSE of Tres Pinos, California · 13088 days ago · 3 km deep · 46 km away
  13. 1.622 km ENE of Soledad, California · 13088 days ago · 6 km deep · 61 km away
  14. 1.66 km NE of Day Valley, California · 13088 days ago · 7 km deep · 55 km away
  15. 2.021 km NE of Soledad, California · 13089 days ago · 7 km deep · 56 km away
  16. 1.94 km E of Interlaken, California · 13090 days ago · 9 km deep · 46 km away
  17. 2.014 km SSE of Tres Pinos, California · 13090 days ago · 5 km deep · 45 km away
  18. 1.83 km NNW of Seacliff, California · 13090 days ago · 4 km deep · 66 km away
  19. 1.55 km SW of Davenport, California · 13091 days ago · 5 km deep · 94 km away
  20. 1.814 km N of Morgan Hill, California · 13091 days ago · 5 km deep · 46 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc202144. Read Mon, Oct 5, 2026, 12:54 PM UTC.