California earthquakes

M1.7 earthquake 41 km W of Three Rocks, California

A magnitude 1.7 earthquake struck 41 km W of Three Rocks, California on Sat, Aug 8, 1987, 9:42 AM PDT (16:42 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M1.8 9 km NNW of Huron, 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
1987-08-08 16:42:27 UTC
Depth
5.3 km (3.3 mi), shallow
Epicenter
36.542° N, 120.856° 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, 4.0 km in depth
Magnitude uncertainty
±0.22
Depth from
From location
Station coverage gap
95°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 127 in the 60 days after this one and 58 in the 30 days before it.

After

  1. 1.54 km NNE of Coalinga, California · 14289 days ago · 13 km deep · 62 km away
  2. 1.89 km NNW of Huron, California · 14289 days ago · 8 km deep · 70 km away
  3. 2.319 km S of Big Sur, California · 14289 days ago · 16 km deep · 100 km away
  4. 1.610 km SW of Ridgemark, California · 14289 days ago · 7 km deep · 57 km away
  5. 1.726 km SW of Firebaugh, California · 14289 days ago · 10 km deep · 24 km away
  6. 1.76 km ESE of San Lucas, California · 14288 days ago · 9 km deep · 48 km away
  7. 1.93 km S of San Juan Bautista, California · 14288 days ago · 6 km deep · 68 km away
  8. 2.027 km WSW of Lockwood, California · 14288 days ago · 10 km deep · 86 km away
  9. 1.610 km NNW of Hollister, California · 14288 days ago · 4 km deep · 68 km away
  10. 2.11 km SSE of Tres Pinos, California · 14287 days ago · 8 km deep · 49 km away
  11. 1.617 km NW of Coalinga, California · 14286 days ago · 8 km deep · 46 km away
  12. 2.60 km WNW of Sand City, California · 14285 days ago · 2 km deep · 90 km away
  13. 1.813 km NE of Coalinga, California · 14285 days ago · 9 km deep · 64 km away
  14. 1.913 km NE of Coalinga, California · 14285 days ago · 8 km deep · 64 km away
  15. 2.413 km NE of Coalinga, California · 14285 days ago · 8 km deep · 63 km away
  16. 1.821 km NE of Soledad, California · 14285 days ago · 6 km deep · 26 km away
  17. 2.311 km NNE of Coalinga, California · 14284 days ago · 9 km deep · 58 km away
  18. 2.68 km NE of Interlaken, California · 14284 days ago · 7 km deep · 88 km away
  19. 1.611 km SW of Huron, California · 14283 days ago · 11 km deep · 75 km away
  20. 1.95 km SE of Tres Pinos, California · 14283 days ago · 8 km deep · 44 km away
  21. 2.125 km NE of Greenfield, California · 14283 days ago · 9 km deep · 17 km away
  22. 2.221 km NE of Soledad, California · 14282 days ago · 5 km deep · 28 km away
  23. 2.021 km NE of Soledad, California · 14282 days ago · 5 km deep · 28 km away
  24. 1.917 km WSW of Soledad, California · 14282 days ago · 9 km deep · 61 km away
  25. 1.65 km SSW of Huron, California · 14281 days ago · 5 km deep · 79 km away
  26. 2.923 km NE of Soledad, California · 14281 days ago · 5 km deep · 25 km away
  27. 2.122 km NE of San Lucas, California · 14281 days ago · 9 km deep · 31 km away
  28. 1.824 km NE of Greenfield, California · 14280 days ago · 1 km deep · 18 km away
  29. 1.68 km NNW of Huron, California · 14280 days ago · 5 km deep · 72 km away
  30. 1.623 km NE of Soledad, California · 14280 days ago · 4 km deep · 24 km away
  31. 2.06 km ENE of Coalinga, California · 14278 days ago · 7 km deep · 66 km away
  32. 2.021 km NE of Soledad, California · 14278 days ago · 2 km deep · 26 km away
  33. 1.712 km E of Coalinga, California · 14278 days ago · 11 km deep · 73 km away
  34. 1.53 km WSW of Hollister, California · 14277 days ago · 9 km deep · 61 km away
  35. 2.120 km SSW of Three Rocks, California · 14277 days ago · 9 km deep · 45 km away
  36. 1.57 km NNE of Avenal, California · 14277 days ago · 8 km deep · 88 km away
  37. 1.65 km ENE of Hollister, California · 14276 days ago · 5 km deep · 57 km away
  38. 1.824 km NE of Greenfield, California · 14276 days ago · 6 km deep · 19 km away
  39. 2.022 km NNE of Soledad, California · 14275 days ago · 8 km deep · 33 km away
  40. 2.62 km NW of Avenal, California · 14274 days ago · 15 km deep · 86 km away
  41. 1.81 km WNW of Avenal, California · 14273 days ago · 13 km deep · 87 km away
  42. 3.818 km SW of Gustine, California · 14273 days ago · 0 km deep · 73 km away
  43. 2.023 km NE of San Lucas, California · 14273 days ago · 7 km deep · 30 km away
  44. 2.810 km N of Coalinga, California · 14272 days ago · 10 km deep · 55 km away
  45. 2.38 km S of Huron, California · 14272 days ago · 6 km deep · 81 km away
  46. 1.62 km SW of Ridgemark, California · 14272 days ago · 8 km deep · 55 km away
  47. 1.912 km S of Tres Pinos, California · 14272 days ago · 3 km deep · 42 km away
  48. 2.38 km W of Huron, California · 14272 days ago · 15 km deep · 70 km away
  49. 1.518 km SW of Gustine, California · 14271 days ago · 0 km deep · 73 km away
  50. 2.09 km SE of Avenal, California · 14271 days ago · -1 km deep · 98 km away
  51. 2.312 km NW of Parkfield, California · 14270 days ago · 10 km deep · 69 km away
  52. 3.26 km ENE of Big Sur, California · 14270 days ago · 13 km deep · 83 km away
  53. 1.512 km SW of Huron, California · 14270 days ago · 13 km deep · 75 km away
  54. 1.7Central California · 14270 days ago · 11 km deep · 42 km away
  55. 2.04 km S of San Juan Bautista, California · 14269 days ago · 7 km deep · 67 km away
  56. 2.9Central California · 14269 days ago · 6 km deep · 33 km away
  57. 1.94 km S of San Juan Bautista, California · 14269 days ago · 7 km deep · 67 km away
  58. 2.311 km SSW of Three Rocks, California · 14269 days ago · 10 km deep · 41 km away
  59. 1.92 km S of Oak Shores, California · 14267 days ago · 8 km deep · 89 km away
  60. 2.032 km WNW of Three Rocks, California · 14267 days ago · 7 km deep · 14 km away

The first 60 of 127.

Before

  1. 2.224 km NE of San Ardo, California · 14291 days ago · 8 km deep · 39 km away
  2. 2.02 km S of Oak Shores, California · 14291 days ago · 7 km deep · 89 km away
  3. 2.57 km NW of Parkfield, California · 14292 days ago · 10 km deep · 74 km away
  4. 1.75 km NNE of Tres Pinos, California · 14293 days ago · 4 km deep · 50 km away
  5. 2.68 km NE of San Martin, California · 14293 days ago · 8 km deep · 89 km away
  6. 2.97 km NNE of Coalinga, California · 14294 days ago · 11 km deep · 61 km away
  7. 1.52 km S of Oak Shores, California · 14294 days ago · 7 km deep · 89 km away
  8. 1.921 km NE of Soledad, California · 14294 days ago · 6 km deep · 26 km away
  9. 1.724 km NE of Greenfield, California · 14295 days ago · 7 km deep · 19 km away
  10. 1.813 km N of Coalinga, California · 14296 days ago · 10 km deep · 55 km away
  11. 1.517 km N of Coalinga, California · 14296 days ago · 10 km deep · 50 km away
  12. 2.45 km NNE of Coalinga, California · 14296 days ago · 14 km deep · 61 km away
  13. 1.526 km S of Big Sur, California · 14297 days ago · 12 km deep · 100 km away
  14. 2.29 km N of Coalinga, California · 14298 days ago · 10 km deep · 57 km away
  15. 1.714 km SSE of Big Sur, California · 14298 days ago · 5 km deep · 88 km away
  16. 1.812 km S of Tres Pinos, California · 14299 days ago · 6 km deep · 43 km away
  17. 1.71 km SSE of Oak Shores, California · 14299 days ago · 7 km deep · 88 km away
  18. 1.89 km SE of San Juan Bautista, California · 14299 days ago · 7 km deep · 61 km away
  19. 1.918 km NW of Coalinga, California · 14300 days ago · 7 km deep · 45 km away
  20. 1.618 km NW of Coalinga, California · 14300 days ago · 7 km deep · 45 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc104263. Read Tue, Sep 22, 2026, 9:29 PM UTC.