California earthquakes

M1.9 earthquake 23 km ENE of Soledad, California

A magnitude 1.9 earthquake struck 23 km ENE of Soledad, California on Mon, Oct 31, 1977, 8:23 AM PST (16:23 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.6 7 km NNE of Interlaken, California. This one was a foreshock.

Soledad 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
1.9 (md), micro
Local time
UTC
1977-10-31 16:23:07 UTC
Depth
4.6 km (2.9 mi), shallow
Epicenter
36.499° N, 121.082° 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 0.2 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
94°
Stations used
19

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 5 in the 30 days before it.

After

  1. 1.625 km ENE of Greenfield, California · 17857 days ago · 5 km deep · 13 km away
  2. 1.518 km NW of Parkfield, California · 17857 days ago · 3 km deep · 71 km away
  3. 1.724 km ENE of Soledad, California · 17857 days ago · 4 km deep · 1 km away
  4. 2.67 km NNE of Interlaken, California · 17856 days ago · 9 km deep · 81 km away
  5. 1.623 km NE of Greenfield, California · 17856 days ago · 5 km deep · 5 km away
  6. 2.410 km S of Tres Pinos, California · 17856 days ago · 5 km deep · 32 km away
  7. 2.122 km NW of Coalinga, California · 17856 days ago · 8 km deep · 55 km away
  8. 3.317 km SW of Lockwood, California · 17856 days ago · 11 km deep · 74 km away
  9. 1.524 km NW of Parkfield, California · 17855 days ago · 4 km deep · 64 km away
  10. 1.912 km N of Morgan Hill, California · 17855 days ago · 4 km deep · 97 km away
  11. 2.924 km ENE of Greenfield, California · 17855 days ago · 7 km deep · 10 km away
  12. 1.626 km ENE of Greenfield, California · 17855 days ago · 7 km deep · 12 km away
  13. 3.025 km ENE of Greenfield, California · 17855 days ago · 7 km deep · 11 km away
  14. 2.025 km ENE of Greenfield, California · 17855 days ago · 6 km deep · 11 km away
  15. 1.825 km ENE of Greenfield, California · 17855 days ago · 7 km deep · 11 km away
  16. 1.825 km ENE of Greenfield, California · 17855 days ago · 6 km deep · 11 km away
  17. 1.625 km ENE of Greenfield, California · 17855 days ago · 6 km deep · 11 km away
  18. 1.99 km NW of Hollister, California · 17854 days ago · 7 km deep · 58 km away
  19. 2.425 km ENE of Greenfield, California · 17854 days ago · 7 km deep · 11 km away
  20. 1.523 km ENE of Soledad, California · 17854 days ago · 5 km deep · 1 km away
  21. 2.232 km WSW of Three Rocks, California · 17854 days ago · 11 km deep · 38 km away
  22. 2.622 km NE of Soledad, California · 17854 days ago · 6 km deep · 13 km away
  23. 1.521 km NE of Soledad, California · 17854 days ago · 6 km deep · 13 km away
  24. 3.322 km NE of Soledad, California · 17854 days ago · 6 km deep · 14 km away
  25. 3.421 km NE of Soledad, California · 17854 days ago · 6 km deep · 13 km away
  26. 3.418 km NNE of Soledad, California · 17854 days ago · 7 km deep · 14 km away
  27. 1.921 km NE of Soledad, California · 17854 days ago · 6 km deep · 14 km away
  28. 1.621 km NE of Soledad, California · 17854 days ago · 6 km deep · 11 km away
  29. 1.621 km NE of Soledad, California · 17854 days ago · 6 km deep · 13 km away
  30. 2.421 km NE of Soledad, California · 17854 days ago · 6 km deep · 12 km away
  31. 3.221 km NE of Soledad, California · 17854 days ago · 7 km deep · 14 km away
  32. 2.021 km NE of Soledad, California · 17854 days ago · 5 km deep · 12 km away
  33. 2.522 km NE of Soledad, California · 17854 days ago · 6 km deep · 14 km away
  34. 1.821 km NE of Soledad, California · 17854 days ago · 6 km deep · 12 km away
  35. 2.321 km NE of Soledad, California · 17854 days ago · 5 km deep · 12 km away
  36. 1.521 km NE of Soledad, California · 17854 days ago · 6 km deep · 12 km away
  37. 2.025 km ENE of Greenfield, California · 17853 days ago · 6 km deep · 11 km away
  38. 2.221 km NE of Soledad, California · 17853 days ago · 3 km deep · 10 km away
  39. 1.721 km NE of Soledad, California · 17853 days ago · 5 km deep · 11 km away
  40. 2.021 km NE of Soledad, California · 17853 days ago · 6 km deep · 11 km away
  41. 2.14 km SSE of San Juan Bautista, California · 17853 days ago · 6 km deep · 53 km away
  42. 2.59 km NW of Hollister, California · 17853 days ago · 7 km deep · 58 km away
  43. 1.625 km ENE of Greenfield, California · 17852 days ago · 6 km deep · 11 km away
  44. 2.022 km NNE of Soledad, California · 17852 days ago · 2 km deep · 16 km away
  45. 1.720 km ESE of Tres Pinos, California · 17851 days ago · 0 km deep · 24 km away
  46. 2.321 km NE of Soledad, California · 17851 days ago · 5 km deep · 12 km away
  47. 2.021 km NE of Soledad, California · 17851 days ago · 5 km deep · 12 km away
  48. 2.025 km E of Tres Pinos, California · 17851 days ago · 0 km deep · 32 km away
  49. 2.419 km NW of Parkfield, California · 17850 days ago · 5 km deep · 69 km away
  50. 2.36 km NW of Parkfield, California · 17849 days ago · 12 km deep · 82 km away
  51. 1.823 km ENE of Soledad, California · 17849 days ago · 6 km deep · 1 km away
  52. 2.321 km NE of Soledad, California · 17847 days ago · 6 km deep · 9 km away
  53. 1.710 km NW of Hollister, California · 17847 days ago · 0 km deep · 59 km away
  54. 2.725 km ENE of Greenfield, California · 17847 days ago · 7 km deep · 11 km away
  55. 2.210 km NNE of San Juan Bautista, California · 17847 days ago · 0 km deep · 59 km away
  56. 2.37 km WSW of Coalinga, California · 17846 days ago · 7 km deep · 72 km away
  57. 1.525 km ENE of Greenfield, California · 17845 days ago · -1 km deep · 9 km away
  58. 2.08 km NNE of Interlaken, California · 17844 days ago · 8 km deep · 81 km away
  59. 1.62 km NE of Ridgemark, California · 17844 days ago · 6 km deep · 43 km away
  60. 1.68 km SSW of Tres Pinos, California · 17843 days ago · 3 km deep · 35 km away

The first 60 of 183.

Before

  1. 1.917 km N of San Simeon, California · 17858 days ago · 11 km deep · 78 km away
  2. 2.321 km NE of Soledad, California · 17858 days ago · 2 km deep · 7 km away
  3. 2.521 km NW of Parkfield, California · 17859 days ago · 4 km deep · 67 km away
  4. 2.123 km ENE of Soledad, California · 17859 days ago · 3 km deep · 0 km away
  5. 2.215 km SSE of Tres Pinos, California · 17859 days ago · 3 km deep · 25 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1037491. Read Tue, Sep 22, 2026, 12:15 PM UTC.