California earthquakes

M2.4 earthquake 7 km NE of Ridgemark, California

A magnitude 2.4 earthquake struck 7 km NE of Ridgemark, California on Wed, Sep 13, 1989, 5:12 AM PDT (12:12 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M6.9 The 1989 Loma Prieta, California Earthquake. 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
1989-09-13 12:12:23 UTC
Depth
5.7 km (3.5 mi), shallow
Epicenter
36.867° N, 121.318° 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
±0.12
Depth from
From location
Station coverage gap
61°
Stations used
76

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 187 in the 60 days after this one and 78 in the 30 days before it.

After

  1. 2.17 km NE of Hollister, California · 13534 days ago · 4 km deep · 5 km away
  2. 1.94 km NE of Big Sur, California · 13533 days ago · 15 km deep · 75 km away
  3. 1.530 km WNW of Coalinga, California · 13532 days ago · 10 km deep · 91 km away
  4. 1.88 km NNE of East Foothills, California · 13531 days ago · 7 km deep · 77 km away
  5. 2.122 km NE of Soledad, California · 13531 days ago · 7 km deep · 38 km away
  6. 1.522 km NE of Soledad, California · 13531 days ago · 8 km deep · 38 km away
  7. 2.711 km ESE of East Foothills, California · 13531 days ago · 7 km deep · 62 km away
  8. 1.611 km ESE of East Foothills, California · 13531 days ago · 7 km deep · 62 km away
  9. 2.011 km ESE of East Foothills, California · 13531 days ago · 7 km deep · 62 km away
  10. 1.628 km SE of Big Sur, California · 13530 days ago · 7 km deep · 89 km away
  11. 1.69 km NNE of East Foothills, California · 13529 days ago · 6 km deep · 77 km away
  12. 2.221 km NE of Soledad, California · 13529 days ago · 5 km deep · 35 km away
  13. 1.936 km ENE of Soledad, California · 13529 days ago · 1 km deep · 42 km away
  14. 1.911 km ESE of East Foothills, California · 13528 days ago · 7 km deep · 62 km away
  15. 1.925 km NE of San Ardo, California · 13528 days ago · 0 km deep · 90 km away
  16. 1.57 km NNW of Hollister, California · 13528 days ago · 8 km deep · 11 km away
  17. 1.75 km WNW of San Juan Bautista, California · 13527 days ago · 6 km deep · 24 km away
  18. 2.26 km NE of San Martin, California · 13527 days ago · 6 km deep · 35 km away
  19. 2.18 km NNE of Interlaken, California · 13527 days ago · 8 km deep · 37 km away
  20. 1.87 km NE of Hollister, California · 13526 days ago · 5 km deep · 5 km away
  21. 1.525 km ENE of Greenfield, California · 13525 days ago · -1 km deep · 54 km away
  22. 2.228 km SE of Big Sur, California · 13525 days ago · 7 km deep · 89 km away
  23. 1.624 km NE of Greenfield, California · 13524 days ago · 5 km deep · 51 km away
  24. 1.914 km E of Seven Trees, California · 13523 days ago · 6 km deep · 58 km away
  25. 2.221 km NE of Soledad, California · 13522 days ago · 5 km deep · 39 km away
  26. 2.56 km NE of East Foothills, California · 13522 days ago · 8 km deep · 72 km away
  27. 2.011 km S of Tres Pinos, California · 13521 days ago · 4 km deep · 20 km away
  28. 1.56 km NE of East Foothills, California · 13520 days ago · 7 km deep · 73 km away
  29. 2.327 km E of Tres Pinos, California · 13519 days ago · 1 km deep · 29 km away
  30. 1.68 km NNE of East Foothills, California · 13519 days ago · 7 km deep · 77 km away
  31. 3.225 km NE of Soledad, California · 13519 days ago · 9 km deep · 38 km away
  32. 1.66 km SSW of Ridgemark, California · 13518 days ago · 9 km deep · 13 km away
  33. 2.520 km NE of East Foothills, California · 13517 days ago · 6 km deep · 74 km away
  34. 4.011 km W of Three Rocks, California · 13517 days ago · 11 km deep · 82 km away
  35. 1.923 km NE of San Lucas, California · 13516 days ago · 7 km deep · 82 km away
  36. 2.06 km SE of Tres Pinos, California · 13516 days ago · 10 km deep · 13 km away
  37. 1.531 km WNW of Three Rocks, California · 13516 days ago · 6 km deep · 61 km away
  38. 1.915 km E of Seven Trees, California · 13516 days ago · 5 km deep · 57 km away
  39. 3.121 km NE of Soledad, California · 13516 days ago · 3 km deep · 37 km away
  40. 3.122 km NE of Soledad, California · 13516 days ago · 3 km deep · 38 km away
  41. 2.121 km NE of Soledad, California · 13516 days ago · 3 km deep · 37 km away
  42. 2.121 km NE of Soledad, California · 13516 days ago · 2 km deep · 37 km away
  43. 1.921 km NE of Soledad, California · 13515 days ago · 2 km deep · 37 km away
  44. 2.124 km NE of Greenfield, California · 13515 days ago · 5 km deep · 50 km away
  45. 1.724 km NE of Greenfield, California · 13515 days ago · 5 km deep · 50 km away
  46. 1.724 km NE of Greenfield, California · 13515 days ago · 5 km deep · 51 km away
  47. 2.025 km ENE of Greenfield, California · 13515 days ago · 1 km deep · 56 km away
  48. 2.027 km NE of Soledad, California · 13514 days ago · 8 km deep · 39 km away
  49. 1.633 km SW of Greenfield, California · 13514 days ago · 6 km deep · 88 km away
  50. 2.321 km NE of Soledad, California · 13513 days ago · 6 km deep · 33 km away
  51. 1.61 km E of Aromas, California · 13513 days ago · 8 km deep · 27 km away
  52. 1.624 km NE of Greenfield, California · 13512 days ago · 7 km deep · 52 km away
  53. 1.714 km E of Seven Trees, California · 13512 days ago · 2 km deep · 57 km away
  54. 1.810 km NNE of East Foothills, California · 13512 days ago · 6 km deep · 79 km away
  55. 1.623 km ENE of Soledad, California · 13512 days ago · 4 km deep · 45 km away
  56. 2.028 km SE of Big Sur, California · 13511 days ago · 6 km deep · 89 km away
  57. 1.629 km SE of Big Sur, California · 13511 days ago · 6 km deep · 90 km away
  58. 2.48 km SSW of Tres Pinos, California · 13511 days ago · 2 km deep · 17 km away
  59. 2.63 km S of Loyola, California · 13511 days ago · 6 km deep · 86 km away
  60. 1.723 km ENE of Soledad, California · 13511 days ago · 4 km deep · 44 km away

The first 60 of 187.

Before

  1. 1.73 km S of San Juan Bautista, California · 13534 days ago · 6 km deep · 20 km away
  2. 1.67 km E of East Foothills, California · 13535 days ago · 8 km deep · 67 km away
  3. 2.021 km SSE of Tres Pinos, California · 13535 days ago · 5 km deep · 29 km away
  4. 1.67 km NNE of East Foothills, California · 13536 days ago · 4 km deep · 77 km away
  5. 3.43 km ESE of Lexington Hills, California · 13536 days ago · 14 km deep · 64 km away
  6. 2.27 km E of East Foothills, California · 13536 days ago · 8 km deep · 68 km away
  7. 1.812 km WSW of Saratoga, California · 13537 days ago · 9 km deep · 86 km away
  8. 1.710 km NNE of East Foothills, California · 13538 days ago · 8 km deep · 80 km away
  9. 1.94 km E of San Juan Bautista, California · 13539 days ago · 9 km deep · 16 km away
  10. 1.58 km SE of Livermore, California · 13539 days ago · 6 km deep · 92 km away
  11. 2.18 km SE of Livermore, California · 13539 days ago · 6 km deep · 92 km away
  12. 1.58 km SE of Livermore, California · 13539 days ago · 6 km deep · 92 km away
  13. 2.23 km E of Lexington Hills, California · 13539 days ago · 14 km deep · 64 km away
  14. 2.326 km ENE of Greenfield, California · 13540 days ago · 8 km deep · 55 km away
  15. 2.111 km SSE of Tres Pinos, California · 13540 days ago · 4 km deep · 20 km away
  16. 1.610 km ESE of Gilroy, California · 13541 days ago · 4 km deep · 18 km away
  17. 1.513 km SSE of Davenport, California · 13541 days ago · 10 km deep · 74 km away
  18. 2.817 km SE of Livermore, California · 13541 days ago · 4 km deep · 82 km away
  19. 2.26 km NNE of East Foothills, California · 13542 days ago · 10 km deep · 75 km away
  20. 2.67 km E of East Foothills, California · 13542 days ago · 6 km deep · 67 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc143994. Read Sat, Oct 3, 2026, 11:42 AM UTC.