California earthquakes

M1.7 earthquake 26 km WSW of Three Rocks, California

A magnitude 1.7 earthquake struck 26 km WSW of Three Rocks, California on Sat, Aug 15, 1981, 11:40 AM PDT (18:40 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M2.1 23 km ENE of Soledad, 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
1.7 (md), micro
Local time
UTC
1981-08-15 18:40:18 UTC
Depth
9.2 km (5.7 mi), shallow
Epicenter
36.450° N, 120.683° 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 0.7 km horizontally, 1.5 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
180°
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: 143 in the 60 days after this one and 44 in the 30 days before it.

After

  1. 1.52 km ESE of Tres Pinos, California · 16474 days ago · 8 km deep · 66 km away
  2. 1.511 km S of Tres Pinos, California · 16474 days ago · 2 km deep · 63 km away
  3. 2.123 km ENE of Soledad, California · 16473 days ago · 5 km deep · 35 km away
  4. 1.92 km NE of Ridgemark, California · 16472 days ago · 7 km deep · 73 km away
  5. 1.922 km ENE of Soledad, California · 16471 days ago · 3 km deep · 40 km away
  6. 2.027 km E of Tres Pinos, California · 16470 days ago · 7 km deep · 48 km away
  7. 1.824 km ENE of Soledad, California · 16470 days ago · 3 km deep · 35 km away
  8. 1.727 km W of Coalinga, California · 16470 days ago · 6 km deep · 32 km away
  9. 1.922 km NW of Parkfield, California · 16470 days ago · -1 km deep · 46 km away
  10. 3.19 km SW of Tres Pinos, CA · 16470 days ago · 2 km deep · 70 km away
  11. 1.9Central California · 16469 days ago · 4 km deep · 80 km away
  12. 1.68 km SE of San Juan Bautista, California · 16469 days ago · 5 km deep · 81 km away
  13. 1.738 km SSW of South Dos Palos, California · 16469 days ago · 8 km deep · 25 km away
  14. 3.22 km SW of San Juan Bautista, California · 16469 days ago · 5 km deep · 89 km away
  15. 1.73 km NNW of Hollister, California · 16469 days ago · 7 km deep · 81 km away
  16. 2.124 km ENE of San Ardo, California · 16467 days ago · 7 km deep · 38 km away
  17. 1.5Near the coast of Central California · 16466 days ago · 15 km deep · 88 km away
  18. 2.18 km SW of Tres Pinos, California · 16466 days ago · 3 km deep · 71 km away
  19. 1.830 km ENE of Soledad, California · 16466 days ago · 7 km deep · 34 km away
  20. 2.33 km S of San Juan Bautista, California · 16466 days ago · 6 km deep · 86 km away
  21. 1.524 km NE of Greenfield, California · 16466 days ago · 5 km deep · 34 km away
  22. 2.137 km W of Three Rocks, California · 16465 days ago · 5 km deep · 16 km away
  23. 1.524 km NE of Greenfield, California · 16465 days ago · 2 km deep · 32 km away
  24. 2.237 km W of Three Rocks, California · 16465 days ago · 5 km deep · 16 km away
  25. 1.518 km NW of Parkfield, California · 16465 days ago · 4 km deep · 49 km away
  26. 2.36 km W of Soledad, California · 16463 days ago · 11 km deep · 64 km away
  27. 1.715 km ESE of Tres Pinos, California · 16463 days ago · 10 km deep · 53 km away
  28. 1.924 km NE of King City, California · 16461 days ago · 1 km deep · 26 km away
  29. 1.89 km ENE of Gilroy, California · 16460 days ago · 9 km deep · 96 km away
  30. 2.424 km NE of Greenfield, California · 16459 days ago · 2 km deep · 34 km away
  31. 2.011 km S of Tres Pinos, California · 16458 days ago · 4 km deep · 62 km away
  32. 1.84 km W of Gonzales, California · 16458 days ago · 10 km deep · 73 km away
  33. 1.99 km SSW of Tres Pinos, California · 16456 days ago · 2 km deep · 66 km away
  34. 2.724 km ENE of Soledad, California · 16456 days ago · 3 km deep · 35 km away
  35. 1.840 km W of Lockwood, California · 16455 days ago · 12 km deep · 98 km away
  36. 2.541 km W of Lockwood, California · 16455 days ago · 10 km deep · 98 km away
  37. 2.535 km ENE of Soledad, California · 16454 days ago · 5 km deep · 27 km away
  38. 2.221 km NE of Soledad, California · 16454 days ago · 8 km deep · 41 km away
  39. 1.929 km W of Three Rocks, California · 16454 days ago · 7 km deep · 10 km away
  40. 1.65 km SSW of Tres Pinos, California · 16453 days ago · 9 km deep · 67 km away
  41. 2.324 km NE of Greenfield, California · 16452 days ago · 6 km deep · 32 km away
  42. 1.524 km ENE of Soledad, California · 16451 days ago · 4 km deep · 35 km away
  43. 1.55 km ESE of Aromas, California · 16451 days ago · 7 km deep · 93 km away
  44. 2.424 km NE of Greenfield, California · 16451 days ago · 0 km deep · 31 km away
  45. 1.524 km NE of Greenfield, California · 16451 days ago · 1 km deep · 31 km away
  46. 3.121 km NE of Soledad, California · 16451 days ago · 5 km deep · 41 km away
  47. 1.62 km SSW of San Juan Bautista, California · 16450 days ago · 6 km deep · 87 km away
  48. 3.26 km S of San Juan Bautista, California · 16450 days ago · 11 km deep · 85 km away
  49. 2.96 km S of San Juan Bautista, California · 16449 days ago · 10 km deep · 84 km away
  50. 2.815 km SSW of Lockwood, California · 16449 days ago · 5 km deep · 82 km away
  51. 2.128 km SW of South Dos Palos, CA · 16448 days ago · 4 km deep · 42 km away
  52. 2.737 km W of Three Rocks, California · 16448 days ago · 7 km deep · 16 km away
  53. 2.338 km W of Three Rocks, California · 16448 days ago · 0 km deep · 16 km away
  54. 1.638 km W of Three Rocks, California · 16448 days ago · 5 km deep · 16 km away
  55. 2.237 km W of Three Rocks, California · 16448 days ago · 6 km deep · 16 km away
  56. 2.7Central California · 16448 days ago · 11 km deep · 5 km away
  57. 1.530 km E of Tres Pinos, California · 16447 days ago · 5 km deep · 46 km away
  58. 1.69 km NW of Parkfield, California · 16447 days ago · 3 km deep · 57 km away
  59. 1.737 km W of Three Rocks, California · 16447 days ago · 3 km deep · 16 km away
  60. 2.541 km W of Lockwood, California · 16446 days ago · 10 km deep · 98 km away

The first 60 of 143.

Before

  1. 1.74 km SSE of Parkfield, California · 16474 days ago · 4 km deep · 70 km away
  2. 2.94 km W of San Juan Bautista, California · 16475 days ago · 6 km deep · 92 km away
  3. 2.63 km ESE of Tres Pinos, California · 16476 days ago · 8 km deep · 65 km away
  4. 4.22 km ESE of Tres Pinos, California · 16476 days ago · 9 km deep · 65 km away
  5. 2.411 km W of Huron, California · 16476 days ago · 8 km deep · 49 km away
  6. 1.911 km W of Huron, California · 16476 days ago · 8 km deep · 49 km away
  7. 2.810 km W of Huron, California · 16476 days ago · 9 km deep · 50 km away
  8. 1.710 km WNW of Avenal, California · 16477 days ago · 9 km deep · 61 km away
  9. 1.521 km NE of Soledad, California · 16477 days ago · 8 km deep · 42 km away
  10. 1.610 km E of Gilroy, California · 16478 days ago · 5 km deep · 92 km away
  11. 1.97 km N of Hollister, California · 16479 days ago · 8 km deep · 81 km away
  12. 1.97 km N of Hollister, California · 16479 days ago · 7 km deep · 81 km away
  13. 1.55 km SSW of Gilroy, California · 16480 days ago · 7 km deep · 100 km away
  14. 1.538 km W of Three Rocks, California · 16481 days ago · 7 km deep · 16 km away
  15. 1.611 km ESE of Tres Pinos, California · 16481 days ago · 10 km deep · 57 km away
  16. 1.829 km NW of San Simeon, California · 16481 days ago · 0 km deep · 93 km away
  17. 1.730 km WSW of Lockwood, California · 16481 days ago · 8 km deep · 92 km away
  18. 1.539 km W of Three Rocks, California · 16481 days ago · 11 km deep · 16 km away
  19. 1.619 km E of Tres Pinos, California · 16481 days ago · 5 km deep · 53 km away
  20. 2.519 km NW of Parkfield, California · 16482 days ago · 5 km deep · 48 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1066784. Read Wed, Sep 23, 2026, 12:52 AM UTC.