California earthquakes

M1.6 earthquake 6 km SW of Ridgemark, California

A magnitude 1.6 earthquake struck 6 km SW of Ridgemark, California on Sat, Nov 23, 1985, 3:53 PM PST (23:53 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M2.9 27 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
1985-11-23 23:53:14 UTC
Depth
11.1 km (6.9 mi), shallow
Epicenter
36.774° N, 121.425° 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 0.2 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
38°
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: 172 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.927 km ENE of Soledad, California · 14905 days ago · 6 km deep · 40 km away
  2. 1.65 km NE of Ridgemark, California · 14905 days ago · 5 km deep · 13 km away
  3. 1.812 km S of Tres Pinos, California · 14904 days ago · 2 km deep · 15 km away
  4. 2.19 km ESE of East Foothills, California · 14904 days ago · 5 km deep · 70 km away
  5. 1.917 km SSE of Tres Pinos, California · 14904 days ago · 4 km deep · 21 km away
  6. 1.53 km N of East Foothills, California · 14903 days ago · 0 km deep · 79 km away
  7. 2.110 km SE of Livermore, California · 14903 days ago · 8 km deep · 97 km away
  8. 2.610 km SE of Livermore, California · 14903 days ago · 9 km deep · 98 km away
  9. 2.017 km SSE of Tres Pinos, California · 14903 days ago · 6 km deep · 21 km away
  10. 1.617 km SSE of Tres Pinos, California · 14903 days ago · 6 km deep · 21 km away
  11. 2.09 km SE of Livermore, California · 14903 days ago · 9 km deep · 98 km away
  12. 2.09 km SE of Livermore, California · 14903 days ago · 9 km deep · 97 km away
  13. 1.97 km NNE of Milpitas, California · 14902 days ago · 6 km deep · 89 km away
  14. 2.19 km SE of Livermore, California · 14902 days ago · 8 km deep · 98 km away
  15. 1.69 km SE of Livermore, California · 14902 days ago · 8 km deep · 97 km away
  16. 3.314 km N of Morgan Hill, California · 14902 days ago · 6 km deep · 58 km away
  17. 1.924 km ENE of Greenfield, California · 14902 days ago · 5 km deep · 56 km away
  18. 1.925 km ENE of Greenfield, California · 14902 days ago · 2 km deep · 53 km away
  19. 1.63 km ENE of San Ardo, California · 14902 days ago · 11 km deep · 96 km away
  20. 2.04 km SSE of San Juan Bautista, California · 14901 days ago · 4 km deep · 9 km away
  21. 1.624 km SE of Big Sur, California · 14901 days ago · 14 km deep · 75 km away
  22. 2.68 km S of Merced, California · 14901 days ago · 16 km deep · 98 km away
  23. 1.91 km NNE of Tres Pinos, California · 14900 days ago · 8 km deep · 10 km away
  24. 2.317 km ENE of East Foothills, California · 14899 days ago · 5 km deep · 74 km away
  25. 1.723 km NE of King City, California · 14899 days ago · 3 km deep · 64 km away
  26. 1.5Central California · 14899 days ago · 5 km deep · 28 km away
  27. 2.04 km SSE of Seven Trees, California · 14898 days ago · 6 km deep · 63 km away
  28. 1.617 km SSE of Tres Pinos, California · 14898 days ago · 6 km deep · 20 km away
  29. 1.512 km N of Morgan Hill, California · 14897 days ago · 6 km deep · 56 km away
  30. 1.93 km N of Aromas, California · 14897 days ago · 5 km deep · 26 km away
  31. 1.816 km E of Seven Trees, California · 14897 days ago · 8 km deep · 60 km away
  32. 2.73 km N of East Foothills, California · 14896 days ago · 1 km deep · 80 km away
  33. 1.524 km NE of Greenfield, California · 14896 days ago · 5 km deep · 48 km away
  34. 2.13 km N of East Foothills, California · 14895 days ago · 0 km deep · 79 km away
  35. 1.926 km W of Volta, California · 14895 days ago · 4 km deep · 39 km away
  36. 3.06 km NNE of Interlaken, California · 14893 days ago · 11 km deep · 37 km away
  37. 3.46 km NNE of Interlaken, California · 14893 days ago · 12 km deep · 37 km away
  38. 2.17 km NNE of Interlaken, California · 14893 days ago · 10 km deep · 37 km away
  39. 1.96 km NNE of Interlaken, California · 14893 days ago · 11 km deep · 37 km away
  40. 1.96 km NE of East Foothills, California · 14893 days ago · 4 km deep · 78 km away
  41. 1.824 km NE of Greenfield, California · 14893 days ago · 5 km deep · 49 km away
  42. 1.78 km ENE of Morgan Hill, California · 14893 days ago · 3 km deep · 46 km away
  43. 1.616 km E of Seven Trees, California · 14892 days ago · 6 km deep · 60 km away
  44. 1.63 km N of East Foothills, California · 14892 days ago · 0 km deep · 79 km away
  45. 1.631 km NE of Soledad, California · 14892 days ago · 8 km deep · 41 km away
  46. 1.823 km WSW of Lockwood, California · 14892 days ago · 4 km deep · 98 km away
  47. 1.77 km W of Gilroy, California · 14892 days ago · 9 km deep · 32 km away
  48. 2.59 km NE of San Martin, California · 14891 days ago · 8 km deep · 44 km away
  49. 2.121 km NE of Soledad, California · 14891 days ago · 5 km deep · 32 km away
  50. 2.86 km NE of East Foothills, California · 14891 days ago · 4 km deep · 78 km away
  51. 2.17 km NE of Interlaken, California · 14890 days ago · 10 km deep · 33 km away
  52. 1.88 km SE of San Juan Bautista, California · 14889 days ago · 4 km deep · 5 km away
  53. 1.88 km SE of San Juan Bautista, California · 14889 days ago · 4 km deep · 5 km away
  54. 2.32 km ESE of San Ardo, California · 14889 days ago · 10 km deep · 98 km away
  55. 1.61 km ESE of San Ardo, California · 14888 days ago · 11 km deep · 97 km away
  56. 2.321 km NE of Soledad, California · 14888 days ago · 7 km deep · 30 km away
  57. 1.97 km NE of Interlaken, California · 14888 days ago · 10 km deep · 32 km away
  58. 2.1Central California · 14887 days ago · 18 km deep · 17 km away
  59. 1.921 km NE of Soledad, California · 14887 days ago · 7 km deep · 30 km away
  60. 2.49 km SSW of Ridgemark, California · 14887 days ago · 6 km deep · 5 km away

The first 60 of 172.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc59765. Read Tue, Sep 22, 2026, 8:35 PM UTC.