California earthquakes

M1.6 earthquake 21 km NE of Soledad, California

A magnitude 1.6 earthquake struck 21 km NE of Soledad, California on Mon, Jul 31, 1978, 2:54 PM PDT (21:54 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M3.9 10 km S of Tres Pinos, 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
1.6 (md), micro
Local time
UTC
1978-07-31 21:54:57 UTC
Depth
7.3 km (4.6 mi), shallow
Epicenter
36.557° N, 121.156° 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 0.3 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
54°
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 149 in the 60 days after this one and 47 in the 30 days before it.

After

  1. 2.025 km NE of Soledad, California · 17592 days ago · 12 km deep · 5 km away
  2. 1.72 km SW of Ridgemark, California · 17592 days ago · 7 km deep · 33 km away
  3. 1.98 km WSW of San Miguel, California · 17592 days ago · 5 km deep · 97 km away
  4. 2.818 km NW of Parkfield, California · 17591 days ago · 5 km deep · 79 km away
  5. 1.818 km SSE of Tres Pinos, California · 17590 days ago · 7 km deep · 12 km away
  6. 1.926 km ESE of Tres Pinos, California · 17590 days ago · 0 km deep · 22 km away
  7. 1.632 km E of Tres Pinos, California · 17589 days ago · 1 km deep · 27 km away
  8. 1.621 km NW of Parkfield, California · 17589 days ago · 4 km deep · 76 km away
  9. 1.821 km NW of Parkfield, California · 17588 days ago · 2 km deep · 76 km away
  10. 1.64 km NE of Bradley, California · 17588 days ago · 10 km deep · 81 km away
  11. 1.65 km SSW of Gilroy, California · 17587 days ago · 6 km deep · 59 km away
  12. 2.330 km NE of Soledad, California · 17586 days ago · 6 km deep · 9 km away
  13. 2.023 km SSW of Volta, California · 17586 days ago · 5 km deep · 41 km away
  14. 1.824 km SE of Tres Pinos, California · 17585 days ago · 9 km deep · 9 km away
  15. 1.62 km SSE of Parkfield, California · 17585 days ago · 10 km deep · 100 km away
  16. 2.121 km NE of Soledad, California · 17585 days ago · 3 km deep · 1 km away
  17. 1.624 km SE of Tres Pinos, California · 17584 days ago · 8 km deep · 9 km away
  18. 2.114 km SSE of Tres Pinos, California · 17583 days ago · 4 km deep · 17 km away
  19. 2.510 km SW of Ridgemark, California · 17582 days ago · 6 km deep · 35 km away
  20. 2.617 km SSE of Tres Pinos, California · 17582 days ago · 3 km deep · 13 km away
  21. 1.821 km NW of Parkfield, California · 17581 days ago · 4 km deep · 76 km away
  22. 1.83 km NNW of Hollister, California · 17581 days ago · 7 km deep · 43 km away
  23. 1.929 km ENE of Soledad, California · 17581 days ago · 6 km deep · 11 km away
  24. 3.211 km S of Tres Pinos, California · 17580 days ago · 3 km deep · 21 km away
  25. 1.929 km ENE of Soledad, California · 17579 days ago · 6 km deep · 10 km away
  26. 1.71 km WSW of Tres Pinos, California · 17578 days ago · 6 km deep · 30 km away
  27. 1.523 km NNE of San Lucas, California · 17578 days ago · 4 km deep · 36 km away
  28. 1.624 km E of Tres Pinos, California · 17577 days ago · 0 km deep · 25 km away
  29. 2.421 km NE of Soledad, California · 17576 days ago · 5 km deep · 2 km away
  30. 1.67 km NNE of Corralitos, California · 17576 days ago · 13 km deep · 78 km away
  31. 1.69 km NW of Hollister, California · 17576 days ago · 4 km deep · 49 km away
  32. 2.3Central California · 17576 days ago · 2 km deep · 14 km away
  33. 2.323 km NNE of San Lucas, California · 17576 days ago · 6 km deep · 38 km away
  34. 2.330 km SSW of South Dos Palos, California · 17576 days ago · 6 km deep · 35 km away
  35. 2.6Central California · 17576 days ago · 7 km deep · 48 km away
  36. 1.86 km NNE of Ridgemark, California · 17575 days ago · 6 km deep · 37 km away
  37. 2.237 km SE of Big Sur, California · 17574 days ago · 10 km deep · 72 km away
  38. 1.922 km NE of San Lucas, California · 17573 days ago · 6 km deep · 41 km away
  39. 2.024 km E of Tres Pinos, California · 17573 days ago · 0 km deep · 26 km away
  40. 2.124 km E of Tres Pinos, California · 17573 days ago · 1 km deep · 26 km away
  41. 1.821 km NE of Soledad, California · 17571 days ago · 5 km deep · 2 km away
  42. 1.68 km N of Morgan Hill, California · 17571 days ago · 4 km deep · 84 km away
  43. 1.72 km SW of San Juan Bautista, California · 17571 days ago · 7 km deep · 47 km away
  44. 1.723 km ENE of Soledad, California · 17570 days ago · 6 km deep · 11 km away
  45. 1.64 km SW of Tres Pinos, California · 17568 days ago · 6 km deep · 28 km away
  46. 1.78 km NE of Gilroy, California · 17566 days ago · 8 km deep · 63 km away
  47. 2.23 km NNW of Hollister, California · 17566 days ago · 7 km deep · 43 km away
  48. 1.53 km W of Ridgemark, California · 17565 days ago · 7 km deep · 36 km away
  49. 1.721 km NE of Soledad, California · 17565 days ago · 5 km deep · 3 km away
  50. 2.32 km ESE of Tres Pinos, California · 17565 days ago · 9 km deep · 28 km away
  51. 1.92 km ESE of Aromas, California · 17565 days ago · 7 km deep · 55 km away
  52. 3.021 km NE of Soledad, California · 17564 days ago · 7 km deep · 3 km away
  53. 3.810 km ESE of East Foothills, California · 17564 days ago · 8 km deep · 100 km away
  54. 1.510 km ESE of East Foothills, California · 17564 days ago · 8 km deep · 100 km away
  55. 2.616 km SSE of Tres Pinos, California · 17563 days ago · 6 km deep · 15 km away
  56. 1.816 km SSE of Tres Pinos, California · 17563 days ago · 6 km deep · 15 km away
  57. 2.016 km SSE of Tres Pinos, California · 17563 days ago · 6 km deep · 14 km away
  58. 2.216 km SSE of Tres Pinos, California · 17563 days ago · 6 km deep · 15 km away
  59. 2.415 km SSE of Tres Pinos, California · 17563 days ago · 6 km deep · 15 km away
  60. 2.0Central California · 17562 days ago · 2 km deep · 7 km away

The first 60 of 149.

Before

  1. 2.217 km WSW of Lockwood, California · 17594 days ago · 12 km deep · 76 km away
  2. 2.03 km ESE of Tres Pinos, California · 17595 days ago · 9 km deep · 27 km away
  3. 2.024 km NE of Greenfield, California · 17595 days ago · 4 km deep · 14 km away
  4. 2.318 km SSE of Tres Pinos, California · 17595 days ago · 6 km deep · 12 km away
  5. 1.719 km NW of Parkfield, California · 17596 days ago · 5 km deep · 79 km away
  6. 2.340 km SSW of South Dos Palos, California · 17596 days ago · 4 km deep · 27 km away
  7. 2.09 km NNW of Hollister, California · 17596 days ago · 5 km deep · 48 km away
  8. 1.92 km W of Tres Pinos, California · 17597 days ago · 2 km deep · 31 km away
  9. 2.08 km ENE of San Martin, California · 17597 days ago · 7 km deep · 71 km away
  10. 1.99 km NW of Parkfield, California · 17601 days ago · 7 km deep · 88 km away
  11. 3.29 km NW of Parkfield, California · 17601 days ago · 7 km deep · 88 km away
  12. 1.616 km NW of Parkfield, California · 17603 days ago · 4 km deep · 82 km away
  13. 2.120 km NW of Parkfield, California · 17603 days ago · 8 km deep · 77 km away
  14. 2.225 km NE of Soledad, California · 17603 days ago · 8 km deep · 4 km away
  15. 1.622 km ENE of Soledad, California · 17603 days ago · 4 km deep · 8 km away
  16. 2.413 km N of Morgan Hill, California · 17603 days ago · 5 km deep · 88 km away
  17. 1.822 km NE of San Lucas, California · 17604 days ago · 7 km deep · 43 km away
  18. 1.925 km ESE of Tres Pinos, California · 17604 days ago · 4 km deep · 18 km away
  19. 1.711 km ESE of Seven Trees, California · 17605 days ago · 4 km deep · 92 km away
  20. 3.28 km NE of Interlaken, California · 17605 days ago · 5 km deep · 68 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1041307. Read Wed, Sep 30, 2026, 3:13 AM UTC.