California earthquakes

M3.0 earthquake 8 km NE of Ridgemark, California

A magnitude 3.0 earthquake struck 8 km NE of Ridgemark, California on Thu, May 8, 1986, 7:29 PM PDT (02:29 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.7 18 km SSE of Tres Pinos, 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
3.0 (ml), minor
Local time
UTC
1986-05-09 02:29:42 UTC
Depth
7.7 km (4.8 mi), shallow
Epicenter
36.875° N, 121.305° 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, 0.2 km in depth
Depth from
From location
Station coverage gap
40°
Stations used
79

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 184 in the 60 days after this one and 181 in the 30 days before it.

After

  1. 1.62 km W of San Juan Bautista, California · 14753 days ago · 5 km deep · 24 km away
  2. 1.59 km NNE of East Foothills, California · 14753 days ago · 5 km deep · 77 km away
  3. 2.119 km SSE of Livermore, California · 14753 days ago · 7 km deep · 79 km away
  4. 2.65 km SE of Tres Pinos, California · 14753 days ago · 9 km deep · 13 km away
  5. 1.817 km NE of East Foothills, California · 14753 days ago · 8 km deep · 78 km away
  6. 1.85 km ESE of Tres Pinos, California · 14752 days ago · 8 km deep · 13 km away
  7. 2.29 km NNE of East Foothills, California · 14752 days ago · 5 km deep · 77 km away
  8. 2.610 km NNE of East Foothills, California · 14752 days ago · 9 km deep · 78 km away
  9. 1.711 km ESE of East Foothills, California · 14752 days ago · 7 km deep · 62 km away
  10. 1.57 km NE of Ridgemark, California · 14752 days ago · 3 km deep · 2 km away
  11. 1.918 km NE of East Foothills, California · 14752 days ago · 5 km deep · 78 km away
  12. 2.48 km NE of Ridgemark, California · 14751 days ago · 6 km deep · 1 km away
  13. 1.812 km N of Morgan Hill, California · 14751 days ago · 3 km deep · 50 km away
  14. 2.117 km SSE of Tres Pinos, California · 14751 days ago · 5 km deep · 26 km away
  15. 1.617 km SSE of Tres Pinos, California · 14751 days ago · 5 km deep · 26 km away
  16. 2.05 km SE of Tres Pinos, California · 14751 days ago · 7 km deep · 13 km away
  17. 1.613 km N of Morgan Hill, California · 14751 days ago · 3 km deep · 51 km away
  18. 2.69 km NNE of East Foothills, California · 14750 days ago · 5 km deep · 76 km away
  19. 1.94 km NE of Interlaken, California · 14750 days ago · 10 km deep · 37 km away
  20. 2.318 km NE of East Foothills, California · 14750 days ago · 8 km deep · 78 km away
  21. 3.114 km NE of East Foothills, California · 14750 days ago · 7 km deep · 73 km away
  22. 1.818 km NE of East Foothills, California · 14749 days ago · 7 km deep · 79 km away
  23. 1.613 km ENE of East Foothills, California · 14749 days ago · 7 km deep · 72 km away
  24. 3.26 km NNE of Tres Pinos, California · 14749 days ago · 6 km deep · 4 km away
  25. 1.813 km ENE of East Foothills, California · 14749 days ago · 7 km deep · 71 km away
  26. 1.717 km NE of East Foothills, California · 14749 days ago · 6 km deep · 78 km away
  27. 1.711 km ENE of East Foothills, California · 14749 days ago · 7 km deep · 69 km away
  28. 1.613 km ENE of East Foothills, California · 14748 days ago · 7 km deep · 72 km away
  29. 1.925 km NNE of King City, California · 14748 days ago · 1 km deep · 60 km away
  30. 1.719 km NNW of Coalinga, California · 14748 days ago · 9 km deep · 99 km away
  31. 2.031 km NE of Soledad, California · 14748 days ago · 9 km deep · 39 km away
  32. 2.313 km NE of East Foothills, California · 14748 days ago · 7 km deep · 73 km away
  33. 2.45 km ENE of Tres Pinos, California · 14747 days ago · 7 km deep · 8 km away
  34. 1.717 km SSE of Livermore, California · 14747 days ago · 3 km deep · 82 km away
  35. 2.010 km S of Tres Pinos, California · 14747 days ago · 3 km deep · 20 km away
  36. 1.71 km SSW of Alum Rock, California · 14747 days ago · 7 km deep · 71 km away
  37. 1.813 km ENE of East Foothills, California · 14747 days ago · 5 km deep · 67 km away
  38. 3.315 km NE of East Foothills, California · 14747 days ago · 8 km deep · 74 km away
  39. 2.313 km ENE of East Foothills, California · 14747 days ago · 6 km deep · 72 km away
  40. 1.718 km NE of East Foothills, California · 14746 days ago · 7 km deep · 79 km away
  41. 2.021 km WSW of Three Rocks, California · 14746 days ago · 7 km deep · 78 km away
  42. 1.913 km ENE of East Foothills, California · 14746 days ago · 6 km deep · 71 km away
  43. 2.3Northern California · 14745 days ago · 6 km deep · 79 km away
  44. 1.66 km NNE of Tres Pinos, California · 14745 days ago · 5 km deep · 4 km away
  45. 2.518 km NE of East Foothills, California · 14745 days ago · 6 km deep · 78 km away
  46. 1.918 km NE of East Foothills, California · 14744 days ago · 6 km deep · 78 km away
  47. 2.013 km ENE of East Foothills, California · 14744 days ago · 7 km deep · 72 km away
  48. 2.06 km SE of Tres Pinos, California · 14744 days ago · 9 km deep · 14 km away
  49. 2.04 km SE of Tres Pinos, California · 14744 days ago · 9 km deep · 12 km away
  50. 1.717 km NE of East Foothills, California · 14744 days ago · 6 km deep · 78 km away
  51. 1.624 km ENE of Soledad, California · 14744 days ago · 7 km deep · 43 km away
  52. 2.118 km NE of East Foothills, California · 14744 days ago · 7 km deep · 79 km away
  53. 1.814 km NE of East Foothills, California · 14743 days ago · 9 km deep · 73 km away
  54. 1.717 km NE of East Foothills, California · 14743 days ago · 5 km deep · 78 km away
  55. 1.713 km ENE of East Foothills, California · 14743 days ago · 7 km deep · 72 km away
  56. 1.522 km NNE of Soledad, California · 14743 days ago · 4 km deep · 32 km away
  57. 1.818 km ENE of Gonzales, California · 14742 days ago · 7 km deep · 32 km away
  58. 2.89 km NNE of East Foothills, California · 14742 days ago · 7 km deep · 77 km away
  59. 3.024 km NNE of San Ardo, California · 14742 days ago · 7 km deep · 89 km away
  60. 1.713 km ENE of East Foothills, California · 14741 days ago · 7 km deep · 70 km away

The first 60 of 184.

Before

  1. 1.78 km E of San Martin, California · 14753 days ago · 3 km deep · 31 km away
  2. 1.719 km SSE of Livermore, California · 14753 days ago · 7 km deep · 79 km away
  3. 1.98 km ENE of Gilroy, California · 14754 days ago · 8 km deep · 24 km away
  4. 3.05 km ESE of Tres Pinos, California · 14754 days ago · 9 km deep · 13 km away
  5. 1.89 km NNE of East Foothills, California · 14754 days ago · 5 km deep · 77 km away
  6. 2.26 km ENE of Interlaken, California · 14754 days ago · 10 km deep · 35 km away
  7. 2.513 km ENE of East Foothills, California · 14754 days ago · 8 km deep · 71 km away
  8. 2.310 km NW of Bonny Doon, California · 14755 days ago · 16 km deep · 87 km away
  9. 1.74 km SE of Tres Pinos, California · 14755 days ago · 7 km deep · 12 km away
  10. 2.013 km ENE of East Foothills, California · 14755 days ago · 5 km deep · 72 km away
  11. 2.05 km NNE of Tres Pinos, California · 14755 days ago · 4 km deep · 4 km away
  12. 1.917 km NE of East Foothills, California · 14755 days ago · 6 km deep · 77 km away
  13. 1.69 km SE of Seven Trees, California · 14755 days ago · 6 km deep · 56 km away
  14. 1.922 km NE of Soledad, California · 14755 days ago · 3 km deep · 41 km away
  15. 1.95 km NNE of Tres Pinos, California · 14755 days ago · 4 km deep · 4 km away
  16. 1.54 km E of Tres Pinos, California · 14756 days ago · 8 km deep · 9 km away
  17. 1.812 km ENE of East Foothills, California · 14756 days ago · 7 km deep · 69 km away
  18. 1.521 km NE of Soledad, California · 14756 days ago · 7 km deep · 35 km away
  19. 1.56 km NE of Ridgemark, California · 14756 days ago · 4 km deep · 2 km away
  20. 2.06 km NE of Ridgemark, California · 14756 days ago · 4 km deep · 2 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc72247 (also filed as usp0002tsw). Read Tue, Sep 29, 2026, 8:20 AM UTC.