California earthquakes

M1.8 earthquake 19 km WSW of Volta, California

A magnitude 1.8 earthquake struck 19 km WSW of Volta, California on Sun, Sep 2, 1990, 8:57 PM PDT (03:57 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M4.4 14 km S 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
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-09-03 03:57:05 UTC
Depth
0.9 km (0.5 mi), shallow
Epicenter
37.043° N, 121.130° 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
±0.09
Depth from
From location
Station coverage gap
149°
Stations used
41

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 183 in the 60 days after this one and 113 in the 30 days before it.

After

  1. 1.713 km S of Tres Pinos, California · 13179 days ago · 5 km deep · 44 km away
  2. 2.314 km SSE of Tres Pinos, California · 13179 days ago · 5 km deep · 44 km away
  3. 1.524 km NE of Greenfield, California · 13179 days ago · 5 km deep · 64 km away
  4. 2.421 km NE of Soledad, California · 13179 days ago · 6 km deep · 54 km away
  5. 2.721 km NE of Soledad, California · 13179 days ago · 6 km deep · 54 km away
  6. 1.79 km SSW of Tres Pinos, California · 13179 days ago · 3 km deep · 42 km away
  7. 1.521 km NNE of Soledad, California · 13178 days ago · 8 km deep · 51 km away
  8. 2.15 km NNE of Corralitos, California · 13178 days ago · 11 km deep · 58 km away
  9. 2.311 km S of Tres Pinos, California · 13178 days ago · 4 km deep · 43 km away
  10. 2.04 km S of San Juan Bautista, California · 13178 days ago · 7 km deep · 44 km away
  11. 1.56 km ENE of Corralitos, California · 13178 days ago · 7 km deep · 54 km away
  12. 2.612 km S of Tres Pinos, California · 13178 days ago · 6 km deep · 44 km away
  13. 1.82 km N of Seacliff, California · 13177 days ago · 4 km deep · 70 km away
  14. 1.72 km N of Seacliff, California · 13177 days ago · 4 km deep · 70 km away
  15. 1.87 km E of East Foothills, California · 13177 days ago · 9 km deep · 66 km away
  16. 1.67 km E of East Foothills, California · 13177 days ago · 9 km deep · 66 km away
  17. 2.26 km E of East Foothills, California · 13177 days ago · 9 km deep · 66 km away
  18. 2.83 km WSW of San Juan Bautista, California · 13177 days ago · 6 km deep · 45 km away
  19. 2.74 km ESE of Aromas, California · 13177 days ago · 6 km deep · 46 km away
  20. 2.121 km NE of Soledad, California · 13177 days ago · 3 km deep · 53 km away
  21. 2.119 km W of Three Rocks, California · 13177 days ago · 3 km deep · 74 km away
  22. 2.12 km WSW of San Juan Bautista, California · 13176 days ago · 7 km deep · 45 km away
  23. 1.88 km SSW of Ridgemark, California · 13176 days ago · 7 km deep · 42 km away
  24. 2.82 km SW of Hollister, California · 13175 days ago · 7 km deep · 35 km away
  25. 2.5Northern California · 13175 days ago · 5 km deep · 63 km away
  26. 2.25 km SE of Sunol, California · 13175 days ago · 6 km deep · 85 km away
  27. 3.021 km NE of Soledad, California · 13175 days ago · 2 km deep · 53 km away
  28. 2.921 km NE of Soledad, California · 13174 days ago · 6 km deep · 54 km away
  29. 2.53 km W of San Juan Bautista, California · 13174 days ago · 5 km deep · 45 km away
  30. 1.76 km SSE of Gilroy, California · 13174 days ago · 5 km deep · 39 km away
  31. 4.112 km S of Tres Pinos, California · 13174 days ago · 7 km deep · 43 km away
  32. 3.712 km S of Tres Pinos, California · 13174 days ago · 6 km deep · 43 km away
  33. 1.712 km S of Tres Pinos, California · 13174 days ago · 6 km deep · 44 km away
  34. 3.011 km S of Tres Pinos, California · 13174 days ago · 6 km deep · 43 km away
  35. 1.712 km S of Tres Pinos, California · 13174 days ago · 6 km deep · 43 km away
  36. 3.112 km S of Tres Pinos, California · 13174 days ago · 6 km deep · 43 km away
  37. 3.712 km S of Tres Pinos, California · 13174 days ago · 7 km deep · 43 km away
  38. 1.911 km S of Tres Pinos, California · 13174 days ago · 6 km deep · 43 km away
  39. 1.912 km S of Tres Pinos, California · 13174 days ago · 6 km deep · 44 km away
  40. 1.811 km S of Tres Pinos, California · 13174 days ago · 5 km deep · 43 km away
  41. 1.612 km S of Tres Pinos, California · 13174 days ago · 5 km deep · 44 km away
  42. 3.112 km S of Tres Pinos, California · 13174 days ago · 6 km deep · 44 km away
  43. 2.812 km S of Tres Pinos, California · 13174 days ago · 6 km deep · 44 km away
  44. 1.613 km S of Tres Pinos, California · 13174 days ago · 6 km deep · 44 km away
  45. 1.611 km S of Tres Pinos, California · 13173 days ago · 6 km deep · 43 km away
  46. 1.95 km SE of Sunol, California · 13173 days ago · 6 km deep · 85 km away
  47. 1.95 km SE of Sunol, California · 13173 days ago · 6 km deep · 85 km away
  48. 1.811 km S of Tres Pinos, California · 13173 days ago · 6 km deep · 43 km away
  49. 1.711 km S of Tres Pinos, California · 13173 days ago · 6 km deep · 43 km away
  50. 2.012 km S of Tres Pinos, California · 13173 days ago · 6 km deep · 44 km away
  51. 2.312 km S of Tres Pinos, California · 13173 days ago · 5 km deep · 44 km away
  52. 1.813 km S of Tres Pinos, California · 13173 days ago · 4 km deep · 44 km away
  53. 2.112 km S of Tres Pinos, California · 13173 days ago · 6 km deep · 44 km away
  54. 2.57 km ENE of Gilroy, California · 13173 days ago · 6 km deep · 32 km away
  55. 3.51 km ENE of Aromas, California · 13173 days ago · 7 km deep · 47 km away
  56. 1.61 km ENE of Aromas, California · 13173 days ago · 6 km deep · 47 km away
  57. 1.62 km E of Aromas, California · 13173 days ago · 6 km deep · 47 km away
  58. 2.11 km ENE of Aromas, California · 13172 days ago · 7 km deep · 47 km away
  59. 1.71 km ENE of Aromas, California · 13172 days ago · 7 km deep · 47 km away
  60. 2.112 km S of Tres Pinos, California · 13172 days ago · 5 km deep · 44 km away

The first 60 of 183.

Before

  1. 1.614 km E of Seven Trees, California · 13180 days ago · 1 km deep · 55 km away
  2. 1.714 km SSE of Tres Pinos, California · 13180 days ago · 5 km deep · 44 km away
  3. 2.314 km SSE of Tres Pinos, California · 13180 days ago · 5 km deep · 44 km away
  4. 3.313 km SSE of Tres Pinos, California · 13180 days ago · 6 km deep · 44 km away
  5. 1.913 km S of Tres Pinos, California · 13180 days ago · 3 km deep · 44 km away
  6. 2.813 km S of Tres Pinos, California · 13180 days ago · 6 km deep · 44 km away
  7. 3.513 km S of Tres Pinos, California · 13180 days ago · 6 km deep · 44 km away
  8. 1.63 km ESE of Lexington Hills, California · 13181 days ago · 4 km deep · 72 km away
  9. 2.9Central California · 13181 days ago · 9 km deep · 44 km away
  10. 2.26 km NE of Ridgemark, California · 13181 days ago · 6 km deep · 27 km away
  11. 1.85 km NW of Day Valley, California · 13182 days ago · 13 km deep · 68 km away
  12. 1.612 km S of Tres Pinos, California · 13182 days ago · 5 km deep · 44 km away
  13. 1.912 km S of Tres Pinos, California · 13182 days ago · 5 km deep · 44 km away
  14. 1.912 km S of Tres Pinos, California · 13182 days ago · 5 km deep · 44 km away
  15. 1.56 km NE of Ridgemark, California · 13182 days ago · 7 km deep · 27 km away
  16. 2.612 km S of Tres Pinos, California · 13182 days ago · 5 km deep · 43 km away
  17. 2.412 km S of Tres Pinos, California · 13183 days ago · 5 km deep · 43 km away
  18. 3.012 km S of Tres Pinos, California · 13183 days ago · 5 km deep · 43 km away
  19. 1.68 km N of East Foothills, California · 13184 days ago · 6 km deep · 76 km away
  20. 2.46 km SSW of Saratoga, California · 13184 days ago · 12 km deep · 85 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc163595. Read Sat, Oct 3, 2026, 3:00 PM UTC.