California earthquakes

M1.6 earthquake 6 km NE of Ridgemark, California

A magnitude 1.6 earthquake struck 6 km NE of Ridgemark, California on Sat, Nov 15, 1986, 2:07 AM PST (10:07 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M1.7 22 km ENE of Soledad, California. This one was a foreshock.

Ridgemark 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
1.6 (md), micro
Local time
UTC
1986-11-15 10:07:06 UTC
Depth
4.5 km (2.8 mi), shallow
Epicenter
36.851° N, 121.314° 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
±0.15
Depth from
From location
Station coverage gap
55°
Stations used
49

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 167 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.722 km ENE of Soledad, California · 14539 days ago · 2 km deep · 39 km away
  2. 1.522 km ENE of Soledad, California · 14538 days ago · 3 km deep · 39 km away
  3. 1.922 km SSE of Tres Pinos, California · 14538 days ago · 7 km deep · 28 km away
  4. 2.415 km N of Morgan Hill, California · 14538 days ago · 6 km deep · 55 km away
  5. 1.624 km NE of Greenfield, California · 14538 days ago · 5 km deep · 49 km away
  6. 2.015 km N of Morgan Hill, California · 14537 days ago · 7 km deep · 55 km away
  7. 1.87 km SW of Ridgemark, California · 14537 days ago · 1 km deep · 14 km away
  8. 1.75 km NNE of Tres Pinos, California · 14536 days ago · 6 km deep · 2 km away
  9. 1.513 km N of Morgan Hill, California · 14536 days ago · 3 km deep · 53 km away
  10. 2.2Northern California · 14536 days ago · 7 km deep · 74 km away
  11. 2.115 km N of Morgan Hill, California · 14536 days ago · 6 km deep · 55 km away
  12. 1.88 km ENE of Tres Pinos, California · 14536 days ago · 8 km deep · 9 km away
  13. 1.79 km NE of San Martin, California · 14535 days ago · 8 km deep · 39 km away
  14. 1.66 km SSW of Tres Pinos, California · 14534 days ago · 4 km deep · 13 km away
  15. 2.325 km NE of Soledad, California · 14534 days ago · 8 km deep · 33 km away
  16. 2.132 km ENE of Soledad, California · 14534 days ago · 7 km deep · 43 km away
  17. 2.124 km NE of Greenfield, California · 14534 days ago · 5 km deep · 49 km away
  18. 2.07 km NNE of Tres Pinos, California · 14534 days ago · 8 km deep · 2 km away
  19. 1.59 km ESE of Tres Pinos, California · 14533 days ago · 0 km deep · 13 km away
  20. 2.08 km ENE of Hollister, California · 14533 days ago · 6 km deep · 4 km away
  21. 1.83 km N of East Foothills, California · 14532 days ago · 0 km deep · 76 km away
  22. 2.112 km NNW of Big Sur, California · 14532 days ago · 4 km deep · 73 km away
  23. 2.824 km NE of Greenfield, California · 14532 days ago · 7 km deep · 50 km away
  24. 2.613 km NE of East Foothills, California · 14532 days ago · 9 km deep · 78 km away
  25. 1.81 km ESE of Davenport, California · 14531 days ago · 4 km deep · 78 km away
  26. 1.624 km NE of Greenfield, California · 14531 days ago · 5 km deep · 50 km away
  27. 1.716 km SSE of Livermore, California · 14531 days ago · 2 km deep · 85 km away
  28. 2.024 km NE of Greenfield, California · 14531 days ago · 5 km deep · 50 km away
  29. 1.69 km NNE of Hollister, California · 14530 days ago · 7 km deep · 9 km away
  30. 3.016 km SSE of Livermore, California · 14530 days ago · 2 km deep · 85 km away
  31. 1.726 km W of Volta, California · 14530 days ago · 4 km deep · 27 km away
  32. 2.218 km NE of East Foothills, California · 14530 days ago · 6 km deep · 81 km away
  33. 1.924 km NE of Greenfield, California · 14530 days ago · 5 km deep · 50 km away
  34. 2.05 km SW of Gilroy, California · 14530 days ago · 4 km deep · 29 km away
  35. 4.116 km SSE of Livermore, California · 14530 days ago · 2 km deep · 85 km away
  36. 1.916 km SE of Livermore, California · 14530 days ago · 2 km deep · 85 km away
  37. 1.816 km SSE of Livermore, California · 14530 days ago · 3 km deep · 85 km away
  38. 2.016 km SSE of Livermore, California · 14530 days ago · 3 km deep · 85 km away
  39. 2.016 km SSE of Livermore, California · 14530 days ago · 2 km deep · 85 km away
  40. 2.715 km SSE of Livermore, California · 14530 days ago · 2 km deep · 85 km away
  41. 2.216 km SSE of Livermore, California · 14530 days ago · 2 km deep · 85 km away
  42. 2.23 km SSE of San Juan Bautista, California · 14530 days ago · 4 km deep · 20 km away
  43. 1.58 km ENE of Hollister, California · 14530 days ago · 6 km deep · 4 km away
  44. 2.616 km SSE of Livermore, California · 14530 days ago · 2 km deep · 85 km away
  45. 3.316 km SE of Livermore, California · 14529 days ago · 3 km deep · 85 km away
  46. 1.916 km SE of Livermore, California · 14529 days ago · 2 km deep · 85 km away
  47. 1.515 km SSE of Livermore, California · 14529 days ago · 3 km deep · 85 km away
  48. 2.316 km SE of Livermore, California · 14529 days ago · 2 km deep · 85 km away
  49. 1.616 km SSE of Livermore, California · 14529 days ago · 3 km deep · 85 km away
  50. 2.05 km NNE of Tres Pinos, California · 14529 days ago · 6 km deep · 3 km away
  51. 1.816 km SE of Livermore, California · 14529 days ago · 2 km deep · 85 km away
  52. 1.516 km SE of Livermore, California · 14529 days ago · 3 km deep · 85 km away
  53. 2.213 km N of Morgan Hill, California · 14529 days ago · 4 km deep · 53 km away
  54. 1.616 km SSE of Livermore, California · 14528 days ago · 3 km deep · 85 km away
  55. 2.025 km WNW of Coalinga, California · 14528 days ago · 5 km deep · 94 km away
  56. 1.716 km SE of Livermore, California · 14528 days ago · 2 km deep · 85 km away
  57. 1.616 km SSE of Livermore, California · 14528 days ago · 3 km deep · 85 km away
  58. 3.116 km SSE of Livermore, California · 14528 days ago · 2 km deep · 85 km away
  59. 1.916 km SE of Livermore, California · 14528 days ago · 3 km deep · 85 km away
  60. 2.121 km NE of Soledad, California · 14528 days ago · 3 km deep · 35 km away

The first 60 of 167.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc87998. Read Tue, Sep 22, 2026, 10:29 AM UTC.