California earthquakes

M1.6 earthquake Central California

A magnitude 1.6 earthquake struck in Central California on Sun, Oct 16, 1977, 8:17 PM PDT (03:17 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M1.6 24 km NE of Greenfield, California. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.6 (md), micro
Local time
UTC
1977-10-17 03:17:56 UTC
Depth
6.1 km (3.8 mi), shallow
Epicenter
36.750° N, 121.087° 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 0.5 km horizontally, 2.3 km in depth
Magnitude uncertainty
±0.28
Depth from
From location
Station coverage gap
115°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 183 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.616 km NW of Parkfield, California · 17868 days ago · 3 km deep · 96 km away
  2. 1.624 km NE of Greenfield, California · 17868 days ago · 6 km deep · 31 km away
  3. 1.629 km WNW of Coalinga, California · 17867 days ago · 9 km deep · 69 km away
  4. 1.66 km ENE of Coalinga, California · 17867 days ago · 12 km deep · 97 km away
  5. 2.03 km WNW of San Ardo, California · 17866 days ago · 11 km deep · 81 km away
  6. 2.115 km SSE of Tres Pinos, California · 17865 days ago · 3 km deep · 20 km away
  7. 3.115 km SSE of Tres Pinos, California · 17865 days ago · 3 km deep · 20 km away
  8. 2.88 km NW of Hollister, California · 17863 days ago · 8 km deep · 38 km away
  9. 1.914 km E of Seven Trees, California · 17863 days ago · 3 km deep · 79 km away
  10. 1.715 km E of Seven Trees, California · 17863 days ago · 3 km deep · 79 km away
  11. 2.16 km SSE of San Juan Bautista, California · 17863 days ago · 8 km deep · 39 km away
  12. 1.727 km ENE of Soledad, California · 17862 days ago · 9 km deep · 21 km away
  13. 2.218 km E of Tres Pinos, California · 17861 days ago · 0 km deep · 4 km away
  14. 3.321 km NE of Soledad, California · 17861 days ago · 5 km deep · 20 km away
  15. 2.414 km SSE of Tres Pinos, California · 17861 days ago · 4 km deep · 20 km away
  16. 1.614 km SSE of Tres Pinos, California · 17861 days ago · 3 km deep · 20 km away
  17. 1.912 km S of Tres Pinos, California · 17861 days ago · 3 km deep · 21 km away
  18. 1.73 km SE of San Ardo, California · 17861 days ago · 13 km deep · 86 km away
  19. 2.19 km S of Tres Pinos, California · 17860 days ago · 2 km deep · 23 km away
  20. 1.82 km WSW of San Juan Bautista, California · 17860 days ago · 3 km deep · 43 km away
  21. 1.719 km SSE of Tres Pinos, California · 17859 days ago · 10 km deep · 20 km away
  22. 1.622 km NE of San Lucas, California · 17859 days ago · 5 km deep · 54 km away
  23. 2.215 km SSE of Tres Pinos, California · 17859 days ago · 3 km deep · 20 km away
  24. 2.123 km ENE of Soledad, California · 17859 days ago · 3 km deep · 28 km away
  25. 2.521 km NW of Parkfield, California · 17859 days ago · 4 km deep · 90 km away
  26. 2.321 km NE of Soledad, California · 17858 days ago · 2 km deep · 23 km away
  27. 1.923 km ENE of Soledad, California · 17858 days ago · 5 km deep · 28 km away
  28. 2.66 km E of East Foothills, California · 17857 days ago · 6 km deep · 92 km away
  29. 1.625 km ENE of Greenfield, California · 17857 days ago · 5 km deep · 39 km away
  30. 1.518 km NW of Parkfield, California · 17857 days ago · 3 km deep · 94 km away
  31. 1.724 km ENE of Soledad, California · 17856 days ago · 4 km deep · 28 km away
  32. 2.67 km NNE of Interlaken, California · 17856 days ago · 9 km deep · 63 km away
  33. 1.623 km NE of Greenfield, California · 17856 days ago · 5 km deep · 32 km away
  34. 2.410 km S of Tres Pinos, California · 17856 days ago · 5 km deep · 23 km away
  35. 2.122 km NW of Coalinga, California · 17856 days ago · 8 km deep · 71 km away
  36. 1.524 km NW of Parkfield, California · 17855 days ago · 4 km deep · 88 km away
  37. 1.912 km N of Morgan Hill, California · 17855 days ago · 4 km deep · 74 km away
  38. 2.924 km ENE of Greenfield, California · 17855 days ago · 7 km deep · 36 km away
  39. 1.626 km ENE of Greenfield, California · 17855 days ago · 7 km deep · 37 km away
  40. 3.025 km ENE of Greenfield, California · 17855 days ago · 7 km deep · 36 km away
  41. 2.025 km ENE of Greenfield, California · 17855 days ago · 6 km deep · 36 km away
  42. 1.825 km ENE of Greenfield, California · 17855 days ago · 7 km deep · 37 km away
  43. 1.825 km ENE of Greenfield, California · 17855 days ago · 6 km deep · 37 km away
  44. 1.625 km ENE of Greenfield, California · 17855 days ago · 6 km deep · 36 km away
  45. 1.99 km NW of Hollister, California · 17854 days ago · 7 km deep · 39 km away
  46. 2.425 km ENE of Greenfield, California · 17854 days ago · 7 km deep · 36 km away
  47. 1.523 km ENE of Soledad, California · 17854 days ago · 5 km deep · 27 km away
  48. 2.232 km WSW of Three Rocks, California · 17854 days ago · 11 km deep · 56 km away
  49. 2.622 km NE of Soledad, California · 17854 days ago · 6 km deep · 20 km away
  50. 1.521 km NE of Soledad, California · 17854 days ago · 6 km deep · 21 km away
  51. 3.322 km NE of Soledad, California · 17854 days ago · 6 km deep · 20 km away
  52. 3.421 km NE of Soledad, California · 17854 days ago · 6 km deep · 20 km away
  53. 3.418 km NNE of Soledad, California · 17854 days ago · 7 km deep · 23 km away
  54. 1.921 km NE of Soledad, California · 17854 days ago · 6 km deep · 20 km away
  55. 1.621 km NE of Soledad, California · 17854 days ago · 6 km deep · 21 km away
  56. 1.621 km NE of Soledad, California · 17854 days ago · 6 km deep · 21 km away
  57. 2.421 km NE of Soledad, California · 17854 days ago · 6 km deep · 21 km away
  58. 3.221 km NE of Soledad, California · 17854 days ago · 7 km deep · 20 km away
  59. 2.021 km NE of Soledad, California · 17854 days ago · 5 km deep · 21 km away
  60. 2.522 km NE of Soledad, California · 17854 days ago · 6 km deep · 20 km away

The first 60 of 183.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1037300. Read Tue, Sep 22, 2026, 10:59 AM UTC.