California earthquakes

M2.9 earthquake 4 km WSW of Ridgemark, California

A magnitude 2.9 earthquake struck 4 km WSW of Ridgemark, California on Mon, May 27, 1974, 10:10 AM PDT (17:10 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M4.4 24 km ENE of Greenfield, 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
2.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1974-05-27 17:10:11 UTC
Depth
4.3 km (2.7 mi), shallow
Epicenter
36.803° N, 121.413° 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 0.4 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
103°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 195 in the 60 days after this one and 126 in the 30 days before it.

After

  1. 2.924 km ENE of Soledad, California · 19123 days ago · 3 km deep · 45 km away
  2. 2.231 km NE of Soledad, California · 19123 days ago · 7 km deep · 41 km away
  3. 2.423 km ENE of Soledad, California · 19123 days ago · 8 km deep · 43 km away
  4. 2.834 km ESE of Tres Pinos, California · 19123 days ago · 1 km deep · 42 km away
  5. 2.7Central California · 19123 days ago · 3 km deep · 34 km away
  6. 3.521 km ENE of San Lucas, California · 19123 days ago · 6 km deep · 82 km away
  7. 2.621 km NE of Soledad, California · 19123 days ago · 9 km deep · 36 km away
  8. 2.124 km NE of Greenfield, California · 19122 days ago · 5 km deep · 50 km away
  9. 4.223 km NNE of San Ardo, California · 19122 days ago · 7 km deep · 89 km away
  10. 2.04 km SSW of Gilroy, California · 19122 days ago · 7 km deep · 25 km away
  11. 2.721 km NE of Soledad, California · 19122 days ago · 3 km deep · 34 km away
  12. 2.424 km NE of Greenfield, California · 19122 days ago · 2 km deep · 49 km away
  13. 4.424 km ENE of Greenfield, California · 19122 days ago · 5 km deep · 54 km away
  14. 2.421 km NE of Soledad, California · 19122 days ago · 3 km deep · 35 km away
  15. 2.824 km ENE of Greenfield, California · 19122 days ago · 6 km deep · 54 km away
  16. 2.724 km ENE of Greenfield, California · 19122 days ago · 7 km deep · 54 km away
  17. 2.022 km SE of Tres Pinos, California · 19122 days ago · 8 km deep · 29 km away
  18. 3.723 km ENE of Soledad, California · 19122 days ago · 9 km deep · 41 km away
  19. 3.123 km NNE of San Lucas, California · 19122 days ago · 4 km deep · 73 km away
  20. 2.426 km NE of Soledad, California · 19121 days ago · 9 km deep · 39 km away
  21. 3.129 km W of Three Rocks, California · 19121 days ago · 8 km deep · 71 km away
  22. 2.324 km ENE of Greenfield, California · 19121 days ago · 6 km deep · 54 km away
  23. 1.512 km SSW of Pescadero, California · 19121 days ago · 11 km deep · 97 km away
  24. 2.56 km WSW of Gilroy, California · 19121 days ago · 4 km deep · 28 km away
  25. 2.624 km ENE of Soledad, California · 19121 days ago · 4 km deep · 46 km away
  26. 2.323 km ENE of San Lucas, California · 19121 days ago · 8 km deep · 86 km away
  27. 1.823 km NE of Greenfield, California · 19121 days ago · 7 km deep · 50 km away
  28. 1.711 km SE of Gilroy, California · 19120 days ago · 13 km deep · 16 km away
  29. 1.821 km NE of Soledad, California · 19120 days ago · 4 km deep · 34 km away
  30. 1.822 km ENE of Soledad, California · 19120 days ago · 7 km deep · 42 km away
  31. 2.627 km W of Three Rocks, California · 19119 days ago · 10 km deep · 74 km away
  32. 3.32 km W of San Juan Bautista, California · 19119 days ago · 6 km deep · 15 km away
  33. 1.523 km NE of King City, California · 19118 days ago · 6 km deep · 62 km away
  34. 2.721 km NE of Soledad, California · 19118 days ago · 3 km deep · 36 km away
  35. 2.025 km NE of Soledad, California · 19118 days ago · 4 km deep · 36 km away
  36. 2.58 km SW of Tres Pinos, California · 19118 days ago · 2 km deep · 9 km away
  37. 2.022 km ENE of Soledad, California · 19118 days ago · 9 km deep · 44 km away
  38. 2.511 km SE of Seven Trees, California · 19118 days ago · 4 km deep · 55 km away
  39. 1.75 km S of Gilroy, California · 19117 days ago · 6 km deep · 23 km away
  40. 1.61 km SSE of Tres Pinos, California · 19117 days ago · 5 km deep · 9 km away
  41. 2.129 km NE of Soledad, California · 19117 days ago · 0 km deep · 37 km away
  42. 1.921 km NE of Soledad, California · 19116 days ago · 6 km deep · 34 km away
  43. 2.55 km ESE of Aromas, California · 19116 days ago · 6 km deep · 18 km away
  44. 2.34 km ESE of Aromas, California · 19116 days ago · 6 km deep · 18 km away
  45. 2.322 km ENE of Soledad, California · 19116 days ago · 4 km deep · 44 km away
  46. 2.514 km SSE of Tres Pinos, California · 19116 days ago · 3 km deep · 19 km away
  47. 2.79 km SW of Ridgemark, California · 19115 days ago · 6 km deep · 6 km away
  48. 2.427 km NE of Soledad, California · 19115 days ago · 9 km deep · 40 km away
  49. 2.328 km ENE of Soledad, California · 19115 days ago · 10 km deep · 43 km away
  50. 1.917 km SSE of Tres Pinos, California · 19115 days ago · 3 km deep · 22 km away
  51. 3.113 km NE of Hollister, California · 19115 days ago · 7 km deep · 18 km away
  52. 2.58 km W of Gilroy, California · 19115 days ago · 9 km deep · 32 km away
  53. 2.812 km SE of Tres Pinos, California · 19114 days ago · 10 km deep · 20 km away
  54. 2.119 km SSE of Tres Pinos, California · 19114 days ago · 5 km deep · 25 km away
  55. 1.616 km ESE of Tres Pinos, California · 19114 days ago · 12 km deep · 25 km away
  56. 1.910 km N of Boulder Creek, California · 19114 days ago · 10 km deep · 79 km away
  57. 2.122 km ENE of Soledad, California · 19114 days ago · 5 km deep · 44 km away
  58. 3.128 km SW of South Dos Palos, California · 19113 days ago · 2 km deep · 46 km away
  59. 2.57 km ESE of East Foothills, California · 19113 days ago · 6 km deep · 69 km away
  60. 2.822 km NE of Soledad, California · 19113 days ago · 21 km deep · 32 km away

The first 60 of 195.

Before

  1. 2.88 km NE of Corralitos, California · 19124 days ago · 13 km deep · 39 km away
  2. 2.730 km SE of Tres Pinos, California · 19124 days ago · 6 km deep · 39 km away
  3. 1.822 km NNE of Soledad, California · 19125 days ago · 3 km deep · 29 km away
  4. 2.0Central California · 19125 days ago · 8 km deep · 92 km away
  5. 3.016 km NE of East Foothills, California · 19126 days ago · 7 km deep · 80 km away
  6. 2.624 km NE of Greenfield, California · 19126 days ago · 5 km deep · 47 km away
  7. 2.422 km NE of San Lucas, California · 19126 days ago · 7 km deep · 81 km away
  8. 4.322 km NE of San Lucas, California · 19126 days ago · 5 km deep · 81 km away
  9. 3.021 km NE of Soledad, California · 19127 days ago · 5 km deep · 35 km away
  10. 2.221 km NE of Soledad, California · 19127 days ago · 6 km deep · 35 km away
  11. 4.124 km NE of Greenfield, California · 19127 days ago · 1 km deep · 50 km away
  12. 1.922 km NNE of Soledad, California · 19127 days ago · 3 km deep · 30 km away
  13. 2.131 km ENE of Soledad, California · 19127 days ago · 15 km deep · 42 km away
  14. 2.55 km ENE of Zayante, California · 19127 days ago · 12 km deep · 61 km away
  15. 2.15 km ENE of Zayante, California · 19127 days ago · 12 km deep · 61 km away
  16. 1.59 km NW of Hollister, California · 19128 days ago · 4 km deep · 14 km away
  17. 2.214 km ENE of Seven Trees, California · 19128 days ago · 7 km deep · 61 km away
  18. 1.83 km NNW of Big Sur, California · 19128 days ago · 5 km deep · 67 km away
  19. 2.25 km SE of Tres Pinos, California · 19128 days ago · 7 km deep · 13 km away
  20. 1.84 km E of Hollister, California · 19128 days ago · 5 km deep · 8 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1019731. Read Sun, Oct 4, 2026, 9:40 PM UTC.