California earthquakes

M2.4 earthquake 9 km SSW of Ridgemark, California

A magnitude 2.4 earthquake struck 9 km SSW of Ridgemark, California on Thu, Dec 19, 1985, 11:58 AM PST (19:58 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.7 4 km NNE 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
2.4 (md), micro
Local time
UTC
1985-12-19 19:58:42 UTC
Depth
6.1 km (3.8 mi), shallow
Epicenter
36.736° N, 121.403° 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
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
31°
Stations used
71

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 189 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.64 km NE of Tres Pinos, California · 14848 days ago · 4 km deep · 14 km away
  2. 1.84 km NE of Tres Pinos, California · 14848 days ago · 4 km deep · 14 km away
  3. 2.74 km NNE of Tres Pinos, California · 14848 days ago · 4 km deep · 14 km away
  4. 3.05 km NNE of Tres Pinos, California · 14848 days ago · 7 km deep · 14 km away
  5. 2.85 km NNE of Tres Pinos, California · 14848 days ago · 7 km deep · 14 km away
  6. 1.74 km NE of Tres Pinos, California · 14848 days ago · 2 km deep · 14 km away
  7. 2.24 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 14 km away
  8. 2.94 km NE of Tres Pinos, California · 14848 days ago · 10 km deep · 14 km away
  9. 3.45 km ENE of Tres Pinos, California · 14848 days ago · 8 km deep · 14 km away
  10. 2.15 km ENE of Tres Pinos, California · 14848 days ago · 8 km deep · 14 km away
  11. 2.04 km ENE of Tres Pinos, California · 14848 days ago · 8 km deep · 14 km away
  12. 2.05 km ENE of Tres Pinos, California · 14848 days ago · 7 km deep · 14 km away
  13. 2.85 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 15 km away
  14. 2.45 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 14 km away
  15. 1.64 km NE of Tres Pinos, California · 14848 days ago · 7 km deep · 14 km away
  16. 2.95 km NE of Tres Pinos, California · 14848 days ago · 9 km deep · 14 km away
  17. 1.7Central California · 14848 days ago · 7 km deep · 14 km away
  18. 1.64 km ENE of Tres Pinos, California · 14848 days ago · 7 km deep · 14 km away
  19. 1.54 km NE of Tres Pinos, California · 14848 days ago · 7 km deep · 14 km away
  20. 1.522 km NE of Soledad, California · 14848 days ago · 5 km deep · 25 km away
  21. 2.54 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 14 km away
  22. 1.8Central California · 14848 days ago · 8 km deep · 14 km away
  23. 1.64 km ENE of Tres Pinos, California · 14848 days ago · 8 km deep · 14 km away
  24. 1.84 km NE of Tres Pinos, California · 14848 days ago · 4 km deep · 14 km away
  25. 2.16 km NNE of Tres Pinos, California · 14848 days ago · 7 km deep · 16 km away
  26. 2.64 km NNE of Tres Pinos, California · 14848 days ago · 4 km deep · 14 km away
  27. 2.64 km NNE of Tres Pinos, California · 14848 days ago · 4 km deep · 14 km away
  28. 2.25 km NNE of Tres Pinos, California · 14848 days ago · 7 km deep · 14 km away
  29. 2.46 km NNE of Tres Pinos, California · 14848 days ago · 4 km deep · 15 km away
  30. 1.55 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 14 km away
  31. 2.85 km NNE of Tres Pinos, California · 14848 days ago · 5 km deep · 14 km away
  32. 1.66 km NNE of Tres Pinos, California · 14848 days ago · 4 km deep · 15 km away
  33. 2.45 km NE of Tres Pinos, California · 14848 days ago · 9 km deep · 14 km away
  34. 1.54 km NE of Tres Pinos, California · 14848 days ago · 7 km deep · 14 km away
  35. 2.15 km NNE of Tres Pinos, California · 14848 days ago · 5 km deep · 14 km away
  36. 1.84 km NNE of Tres Pinos, California · 14848 days ago · 5 km deep · 14 km away
  37. 2.05 km NE of Tres Pinos, California · 14848 days ago · 8 km deep · 15 km away
  38. 1.89 km ENE of Seven Trees, California · 14848 days ago · 6 km deep · 70 km away
  39. 2.16 km NE of Ridgemark, California · 14848 days ago · 7 km deep · 15 km away
  40. 1.64 km NNE of Tres Pinos, California · 14847 days ago · 4 km deep · 14 km away
  41. 1.64 km NE of Tres Pinos, California · 14847 days ago · 7 km deep · 14 km away
  42. 1.84 km NE of Tres Pinos, California · 14847 days ago · 8 km deep · 14 km away
  43. 2.024 km NE of Greenfield, California · 14847 days ago · 7 km deep · 42 km away
  44. 1.53 km ENE of Tres Pinos, California · 14847 days ago · 4 km deep · 13 km away
  45. 2.1Central California · 14847 days ago · 8 km deep · 13 km away
  46. 2.115 km SE of Carmel Valley Village, California · 14847 days ago · 4 km deep · 42 km away
  47. 1.610 km SSW of Tres Pinos, California · 14847 days ago · 7 km deep · 6 km away
  48. 2.23 km ENE of Tres Pinos, California · 14847 days ago · 8 km deep · 13 km away
  49. 2.0Central California · 14847 days ago · 8 km deep · 15 km away
  50. 1.92 km ENE of Tres Pinos, California · 14847 days ago · 4 km deep · 12 km away
  51. 1.65 km NNE of Tres Pinos, California · 14847 days ago · 6 km deep · 15 km away
  52. 1.85 km NE of Tres Pinos, California · 14846 days ago · 6 km deep · 15 km away
  53. 2.17 km NE of Interlaken, California · 14846 days ago · 10 km deep · 37 km away
  54. 1.512 km NNE of Morgan Hill, California · 14846 days ago · 6 km deep · 60 km away
  55. 2.34 km ENE of Tres Pinos, California · 14846 days ago · 9 km deep · 14 km away
  56. 1.55 km NE of Tres Pinos, California · 14846 days ago · 7 km deep · 15 km away
  57. 1.64 km ENE of Tres Pinos, California · 14846 days ago · 7 km deep · 14 km away
  58. 1.924 km ENE of Greenfield, California · 14846 days ago · 1 km deep · 49 km away
  59. 1.88 km NE of Morgan Hill, California · 14846 days ago · 3 km deep · 52 km away
  60. 1.95 km NNE of Tres Pinos, California · 14845 days ago · 8 km deep · 15 km away

The first 60 of 189.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc61888. Read Tue, Sep 22, 2026, 9:28 PM UTC.