California earthquakes

M1.8 earthquake 14 km E of Seven Trees, California

A magnitude 1.8 earthquake struck 14 km E of Seven Trees, California on Tue, Dec 31, 1985, 7:50 AM PST (15:50 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M5.5 3 km ENE of Tres Pinos, California. This one was a foreshock.

Seven Trees forecastMore in California

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), micro
Local time
UTC
1985-12-31 15:50:52 UTC
Depth
2.9 km (1.8 mi), shallow
Epicenter
37.289° N, 121.670° 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 0.1 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
42°
Stations used
57

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 185 in the 60 days after this one and 76 in the 30 days before it.

After

  1. 1.714 km E of Seven Trees, California · 14882 days ago · 3 km deep · 0 km away
  2. 1.67 km NE of Interlaken, California · 14882 days ago · 11 km deep · 33 km away
  3. 2.57 km E of East Foothills, California · 14882 days ago · 3 km deep · 11 km away
  4. 1.516 km E of Seven Trees, California · 14881 days ago · 6 km deep · 1 km away
  5. 1.97 km WSW of Gilroy, California · 14880 days ago · 6 km deep · 33 km away
  6. 2.06 km E of East Foothills, California · 14880 days ago · 9 km deep · 13 km away
  7. 1.513 km ESE of Alum Rock, California · 14880 days ago · 2 km deep · 4 km away
  8. 2.69 km ESE of East Foothills, California · 14880 days ago · 8 km deep · 9 km away
  9. 1.78 km ESE of East Foothills, California · 14880 days ago · 8 km deep · 9 km away
  10. 2.13 km ESE of Diablo Grande, California · 14880 days ago · 2 km deep · 39 km away
  11. 2.030 km ENE of Soledad, California · 14879 days ago · 7 km deep · 99 km away
  12. 2.11 km E of Pacheco, California · 14878 days ago · 21 km deep · 84 km away
  13. 2.713 km N of Morgan Hill, California · 14877 days ago · 5 km deep · 5 km away
  14. 1.714 km N of Morgan Hill, California · 14877 days ago · 6 km deep · 4 km away
  15. 2.014 km N of Morgan Hill, California · 14877 days ago · 3 km deep · 4 km away
  16. 1.821 km NE of Soledad, California · 14876 days ago · 6 km deep · 96 km away
  17. 1.727 km NE of Soledad, California · 14876 days ago · 8 km deep · 97 km away
  18. 1.72 km ESE of Tres Pinos, California · 14876 days ago · 8 km deep · 65 km away
  19. 3.79 km E of Gilroy, California · 14876 days ago · 9 km deep · 36 km away
  20. 2.16 km WSW of Gilroy, California · 14875 days ago · 5 km deep · 35 km away
  21. 1.92 km W of Country Club, California · 14875 days ago · 16 km deep · 80 km away
  22. 1.715 km W of Volta, CA · 14875 days ago · 3 km deep · 55 km away
  23. 2.421 km NE of Soledad, California · 14873 days ago · 2 km deep · 93 km away
  24. 1.916 km NE of East Foothills, California · 14873 days ago · 7 km deep · 22 km away
  25. 1.67 km SSW of Sunol, California · 14873 days ago · 6 km deep · 34 km away
  26. 1.87 km NE of Interlaken, California · 14872 days ago · 9 km deep · 32 km away
  27. 1.72 km N of San Martin, California · 14870 days ago · 4 km deep · 20 km away
  28. 1.917 km SSE of Tres Pinos, California · 14870 days ago · 5 km deep · 81 km away
  29. 1.914 km NNE of East Foothills, California · 14870 days ago · 6 km deep · 23 km away
  30. 2.822 km NE of Soledad, California · 14870 days ago · 3 km deep · 90 km away
  31. 2.813 km ESE of Alum Rock, California · 14870 days ago · 7 km deep · 3 km away
  32. 1.614 km E of Seven Trees, California · 14870 days ago · 2 km deep · 1 km away
  33. 2.029 km NE of Soledad, California · 14870 days ago · 5 km deep · 95 km away
  34. 1.921 km SW of Diablo Grande, California · 14870 days ago · 4 km deep · 18 km away
  35. 2.230 km ENE of Soledad, California · 14870 days ago · 7 km deep · 98 km away
  36. 1.511 km S of Pescadero, California · 14869 days ago · 15 km deep · 65 km away
  37. 1.82 km SSW of Morgan Hill, California · 14869 days ago · 16 km deep · 20 km away
  38. 1.918 km SSE of Tres Pinos, California · 14869 days ago · 10 km deep · 82 km away
  39. 3.421 km NE of Soledad, California · 14868 days ago · 7 km deep · 90 km away
  40. 4.822 km NE of Soledad, California · 14868 days ago · 6 km deep · 90 km away
  41. 2.522 km NNE of Soledad, California · 14868 days ago · 6 km deep · 88 km away
  42. 2.221 km NE of Soledad, California · 14868 days ago · 5 km deep · 91 km away
  43. 1.821 km NE of Soledad, California · 14868 days ago · 5 km deep · 91 km away
  44. 2.721 km NE of Soledad, California · 14868 days ago · 5 km deep · 90 km away
  45. 1.622 km NNE of Soledad, California · 14868 days ago · 5 km deep · 88 km away
  46. 1.622 km NE of Soledad, California · 14868 days ago · 5 km deep · 89 km away
  47. 3.022 km NE of Soledad, California · 14868 days ago · 6 km deep · 90 km away
  48. 3.021 km NNE of Soledad, California · 14868 days ago · 6 km deep · 89 km away
  49. 2.121 km NE of Soledad, California · 14868 days ago · 6 km deep · 89 km away
  50. 1.721 km NNE of Soledad, California · 14868 days ago · 6 km deep · 89 km away
  51. 1.621 km NE of Soledad, California · 14868 days ago · 6 km deep · 89 km away
  52. 2.021 km NE of Soledad, California · 14868 days ago · 5 km deep · 90 km away
  53. 2.621 km NE of Soledad, California · 14868 days ago · 4 km deep · 91 km away
  54. 1.721 km NE of Soledad, California · 14868 days ago · 5 km deep · 91 km away
  55. 1.521 km NE of Soledad, California · 14868 days ago · 6 km deep · 92 km away
  56. 2.121 km NE of Soledad, California · 14868 days ago · 5 km deep · 92 km away
  57. 2.721 km NE of Soledad, California · 14868 days ago · 7 km deep · 89 km away
  58. 2.221 km NE of Soledad, California · 14868 days ago · 6 km deep · 89 km away
  59. 1.622 km NNE of Soledad, California · 14868 days ago · 4 km deep · 88 km away
  60. 1.621 km NE of Soledad, California · 14868 days ago · 6 km deep · 91 km away

The first 60 of 185.

Before

  1. 2.33 km NNE of Grayson, California · 14882 days ago · 8 km deep · 56 km away
  2. 2.221 km NE of Soledad, California · 14883 days ago · 6 km deep · 94 km away
  3. 1.54 km SSE of San Juan Bautista, California · 14883 days ago · 3 km deep · 55 km away
  4. 2.020 km SSE of Tres Pinos, California · 14884 days ago · 5 km deep · 84 km away
  5. 2.30 km SE of Concord, California · 14885 days ago · 14 km deep · 82 km away
  6. 1.918 km WSW of Volta, California · 14885 days ago · 2 km deep · 54 km away
  7. 3.00 km S of Concord, California · 14885 days ago · 16 km deep · 83 km away
  8. 1.512 km N of Morgan Hill, California · 14885 days ago · 6 km deep · 6 km away
  9. 2.13 km W of San Juan Bautista, California · 14886 days ago · 6 km deep · 49 km away
  10. 1.57 km NE of Interlaken, California · 14886 days ago · 10 km deep · 33 km away
  11. 3.018 km WSW of Volta, California · 14887 days ago · 3 km deep · 54 km away
  12. 1.916 km SSE of Tres Pinos, California · 14887 days ago · 8 km deep · 80 km away
  13. 1.93 km SW of San Bruno, California · 14887 days ago · 11 km deep · 77 km away
  14. 2.613 km N of Hollister, California · 14888 days ago · 6 km deep · 44 km away
  15. 2.728 km ENE of Soledad, California · 14890 days ago · 9 km deep · 98 km away
  16. 2.74 km NNE of Ripon, California · 14890 days ago · 2 km deep · 74 km away
  17. 1.66 km NNE of Ridgemark, California · 14892 days ago · 6 km deep · 56 km away
  18. 2.011 km E of Blackhawk, California · 14893 days ago · 21 km deep · 62 km away
  19. 1.73 km S of San Juan Bautista, California · 14893 days ago · 4 km deep · 54 km away
  20. 1.621 km NE of Soledad, California · 14893 days ago · 3 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc62514. Read Tue, Sep 29, 2026, 12:40 PM UTC.