California earthquakes

M2.4 earthquake 5 km S of Ridgemark, California

A magnitude 2.4 earthquake struck 5 km S of Ridgemark, California on Sat, Aug 13, 1988, 11:15 AM PDT (18:15 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M3.5 7 km ESE of East Foothills, 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1988-08-13 18:15:48 UTC
Depth
8.7 km (5.4 mi), shallow
Epicenter
36.768° N, 121.375° 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
±0.17
Depth from
From location
Station coverage gap
37°
Stations used
59

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 169 in the 60 days after this one and 193 in the 30 days before it.

After

  1. 1.925 km NE of Soledad, California · 13928 days ago · 9 km deep · 33 km away
  2. 1.722 km NE of Soledad, California · 13927 days ago · 3 km deep · 28 km away
  3. 1.910 km ESE of East Foothills, California · 13927 days ago · 7 km deep · 71 km away
  4. 1.71 km SW of Tres Pinos, California · 13927 days ago · 6 km deep · 4 km away
  5. 1.818 km NE of East Foothills, California · 13926 days ago · 6 km deep · 87 km away
  6. 1.721 km NE of Soledad, California · 13926 days ago · 3 km deep · 29 km away
  7. 1.722 km NE of Soledad, California · 13926 days ago · 3 km deep · 29 km away
  8. 1.824 km ENE of Greenfield, California · 13926 days ago · 6 km deep · 52 km away
  9. 2.924 km ENE of Greenfield, California · 13926 days ago · 6 km deep · 52 km away
  10. 1.57 km E of East Foothills, California · 13926 days ago · 7 km deep · 75 km away
  11. 2.61 km SSW of San Juan Bautista, California · 13925 days ago · 2 km deep · 17 km away
  12. 2.524 km NE of Soledad, California · 13925 days ago · 4 km deep · 28 km away
  13. 1.624 km NE of Soledad, California · 13925 days ago · 3 km deep · 29 km away
  14. 2.77 km W of Gilroy, California · 13925 days ago · 9 km deep · 35 km away
  15. 2.322 km NE of Soledad, California · 13925 days ago · 3 km deep · 29 km away
  16. 3.221 km NE of Soledad, California · 13924 days ago · 2 km deep · 29 km away
  17. 1.822 km NE of Soledad, California · 13924 days ago · 3 km deep · 28 km away
  18. 1.622 km NE of Soledad, California · 13924 days ago · 3 km deep · 29 km away
  19. 2.122 km NE of Soledad, California · 13924 days ago · 3 km deep · 29 km away
  20. 1.625 km ENE of Greenfield, California · 13924 days ago · 1 km deep · 50 km away
  21. 1.725 km ENE of Greenfield, California · 13924 days ago · 0 km deep · 50 km away
  22. 1.623 km NE of Soledad, California · 13924 days ago · 3 km deep · 28 km away
  23. 1.822 km NE of Soledad, California · 13923 days ago · 3 km deep · 28 km away
  24. 1.626 km ENE of Soledad, California · 13923 days ago · 8 km deep · 36 km away
  25. 1.723 km NE of Soledad, California · 13922 days ago · 4 km deep · 28 km away
  26. 2.87 km E of East Foothills, California · 13921 days ago · 9 km deep · 76 km away
  27. 1.715 km NW of Coalinga, California · 13921 days ago · 4 km deep · 100 km away
  28. 1.613 km SSE of San Juan Bautista, California · 13920 days ago · 12 km deep · 12 km away
  29. 1.74 km ESE of Lexington Hills, California · 13920 days ago · 12 km deep · 65 km away
  30. 1.523 km NE of Soledad, California · 13920 days ago · 3 km deep · 29 km away
  31. 1.624 km NE of Greenfield, California · 13920 days ago · 7 km deep · 45 km away
  32. 2.66 km NE of East Foothills, California · 13918 days ago · 9 km deep · 82 km away
  33. 1.925 km ENE of Soledad, California · 13918 days ago · 5 km deep · 39 km away
  34. 2.112 km ESE of Gilroy, California · 13917 days ago · 5 km deep · 22 km away
  35. 1.622 km NE of Soledad, California · 13917 days ago · 3 km deep · 30 km away
  36. 1.722 km NE of Soledad, California · 13917 days ago · 4 km deep · 30 km away
  37. 3.222 km NE of Soledad, California · 13917 days ago · 2 km deep · 30 km away
  38. 1.621 km NE of Soledad, California · 13917 days ago · 3 km deep · 30 km away
  39. 2.922 km NE of Soledad, California · 13917 days ago · 2 km deep · 30 km away
  40. 1.821 km NE of Soledad, California · 13917 days ago · 3 km deep · 30 km away
  41. 1.822 km NE of Soledad, California · 13917 days ago · 2 km deep · 29 km away
  42. 2.622 km NE of Soledad, California · 13917 days ago · 2 km deep · 30 km away
  43. 1.721 km NE of Soledad, California · 13916 days ago · 2 km deep · 30 km away
  44. 1.6Central California · 13916 days ago · 2 km deep · 30 km away
  45. 2.121 km NE of Soledad, California · 13916 days ago · 2 km deep · 30 km away
  46. 2.622 km NE of Soledad, California · 13916 days ago · 2 km deep · 30 km away
  47. 2.111 km ESE of East Foothills, California · 13916 days ago · 6 km deep · 69 km away
  48. 1.57 km E of East Foothills, California · 13916 days ago · 6 km deep · 75 km away
  49. 1.68 km ENE of Morgan Hill, California · 13916 days ago · 3 km deep · 47 km away
  50. 2.04 km NE of Tres Pinos, California · 13916 days ago · 4 km deep · 9 km away
  51. 2.422 km NE of Soledad, California · 13915 days ago · 3 km deep · 30 km away
  52. 2.322 km NE of Soledad, California · 13914 days ago · 2 km deep · 30 km away
  53. 2.012 km ENE of East Foothills, California · 13914 days ago · 7 km deep · 77 km away
  54. 1.719 km NE of East Foothills, California · 13914 days ago · 6 km deep · 87 km away
  55. 1.922 km NE of Soledad, California · 13914 days ago · 2 km deep · 28 km away
  56. 1.68 km NE of Hollister, California · 13914 days ago · 5 km deep · 15 km away
  57. 1.625 km SE of Tres Pinos, California · 13914 days ago · 11 km deep · 28 km away
  58. 2.125 km SE of Tres Pinos, California · 13914 days ago · 10 km deep · 28 km away
  59. 1.525 km SE of Tres Pinos, California · 13913 days ago · 10 km deep · 28 km away
  60. 1.621 km NE of Soledad, California · 13913 days ago · 3 km deep · 30 km away

The first 60 of 169.

Before

  1. 1.922 km NE of Soledad, California · 13928 days ago · 3 km deep · 29 km away
  2. 1.615 km E of Seven Trees, California · 13930 days ago · 2 km deep · 63 km away
  3. 1.914 km E of Seven Trees, California · 13930 days ago · 1 km deep · 65 km away
  4. 2.36 km NNE of Tres Pinos, California · 13931 days ago · 7 km deep · 11 km away
  5. 2.310 km S of Carmel-by-the-Sea, California · 13931 days ago · 8 km deep · 59 km away
  6. 2.0Central California · 13931 days ago · 2 km deep · 29 km away
  7. 2.46 km ENE of East Foothills, California · 13932 days ago · 7 km deep · 79 km away
  8. 2.411 km ESE of East Foothills, California · 13932 days ago · 7 km deep · 70 km away
  9. 2.124 km ENE of Greenfield, California · 13932 days ago · 7 km deep · 52 km away
  10. 2.123 km NE of Soledad, California · 13933 days ago · 3 km deep · 29 km away
  11. 1.723 km NE of Soledad, California · 13933 days ago · 1 km deep · 30 km away
  12. 1.924 km NE of Soledad, California · 13933 days ago · 2 km deep · 30 km away
  13. 1.610 km N of East Foothills, California · 13933 days ago · 7 km deep · 87 km away
  14. 1.524 km NE of Soledad, California · 13933 days ago · 2 km deep · 30 km away
  15. 1.824 km NE of Soledad, California · 13933 days ago · 1 km deep · 31 km away
  16. 1.68 km ENE of Milpitas, California · 13934 days ago · 7 km deep · 88 km away
  17. 1.513 km SE of Tres Pinos, California · 13934 days ago · 3 km deep · 17 km away
  18. 1.723 km NE of Soledad, California · 13934 days ago · 1 km deep · 29 km away
  19. 2.125 km NE of Greenfield, California · 13934 days ago · 2 km deep · 48 km away
  20. 2.39 km SW of Ridgemark, California · 13934 days ago · 6 km deep · 6 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc122239. Read Thu, Oct 1, 2026, 2:21 PM UTC.