California earthquakes

M1.8 earthquake 32 km W of Three Rocks, California

A magnitude 1.8 earthquake struck 32 km W of Three Rocks, California on Mon, Apr 8, 1985, 8:31 PM PST (04:31 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M2.1 33 km W of Three Rocks, 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
1.8 (md), micro
Local time
UTC
1985-04-09 04:31:02 UTC
Depth
9.3 km (5.8 mi), shallow
Epicenter
36.488° N, 120.756° 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 0.4 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
124°
Stations used
22

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 182 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.133 km W of Three Rocks, California · 15142 days ago · 9 km deep · 0 km away
  2. 2.410 km NE of Coalinga, California · 15142 days ago · 8 km deep · 52 km away
  3. 2.211 km NE of Coalinga, California · 15142 days ago · 6 km deep · 52 km away
  4. 1.518 km N of Coalinga, California · 15142 days ago · 7 km deep · 44 km away
  5. 2.722 km NE of Soledad, California · 15141 days ago · 2 km deep · 40 km away
  6. 1.912 km ENE of Shandon, California · 15141 days ago · 9 km deep · 100 km away
  7. 1.812 km ENE of Shandon, California · 15141 days ago · 9 km deep · 100 km away
  8. 1.59 km NNE of Coalinga, California · 15141 days ago · 8 km deep · 51 km away
  9. 1.719 km SSE of Avenal, California · 15140 days ago · 12 km deep · 95 km away
  10. 2.819 km SSE of Avenal, California · 15140 days ago · 12 km deep · 96 km away
  11. 1.98 km ENE of Coalinga, California · 15140 days ago · 11 km deep · 57 km away
  12. 1.711 km S of Tres Pinos, California · 15140 days ago · 10 km deep · 54 km away
  13. 1.610 km NE of Coalinga, California · 15139 days ago · 8 km deep · 52 km away
  14. 2.224 km NE of Greenfield, California · 15139 days ago · 5 km deep · 26 km away
  15. 1.66 km W of Greenfield, California · 15139 days ago · 9 km deep · 54 km away
  16. 1.529 km SSW of Los Banos, California · 15139 days ago · 2 km deep · 38 km away
  17. 1.64 km W of South Dos Palos, California · 15139 days ago · 10 km deep · 53 km away
  18. 1.610 km WSW of Huron, California · 15139 days ago · 9 km deep · 62 km away
  19. 3.123 km ENE of San Lucas, California · 15138 days ago · 6 km deep · 28 km away
  20. 2.324 km NE of King City, California · 15137 days ago · 7 km deep · 21 km away
  21. 1.724 km NE of Greenfield, California · 15137 days ago · 6 km deep · 27 km away
  22. 1.78 km E of Huron, California · 15137 days ago · 25 km deep · 75 km away
  23. 2.224 km NE of King City, California · 15137 days ago · 8 km deep · 21 km away
  24. 1.79 km E of Coalinga, California · 15137 days ago · 10 km deep · 58 km away
  25. 1.98 km NNW of Avenal, California · 15137 days ago · 0 km deep · 70 km away
  26. 1.927 km E of Tres Pinos, California · 15137 days ago · 4 km deep · 38 km away
  27. 1.98 km NNW of Avenal, California · 15136 days ago · 5 km deep · 71 km away
  28. 2.325 km NW of San Simeon, California · 15136 days ago · 9 km deep · 93 km away
  29. 2.126 km NE of Soledad, California · 15136 days ago · 8 km deep · 30 km away
  30. 2.29 km NNE of Coalinga, California · 15135 days ago · 9 km deep · 51 km away
  31. 2.5Central California · 15135 days ago · 9 km deep · 48 km away
  32. 1.713 km NNE of Coalinga, California · 15135 days ago · 9 km deep · 48 km away
  33. 1.99 km SSW of Ridgemark, California · 15134 days ago · 7 km deep · 64 km away
  34. 1.722 km NE of San Lucas, California · 15134 days ago · 6 km deep · 25 km away
  35. 2.03 km ESE of Aromas, California · 15133 days ago · 7 km deep · 87 km away
  36. 2.4Northern California · 15133 days ago · 8 km deep · 88 km away
  37. 1.610 km E of Coalinga, California · 15133 days ago · 0 km deep · 60 km away
  38. 2.012 km E of Coalinga, California · 15133 days ago · 8 km deep · 62 km away
  39. 1.612 km E of Coalinga, California · 15133 days ago · 9 km deep · 62 km away
  40. 1.65 km S of Three Rocks, California · 15132 days ago · 3 km deep · 33 km away
  41. 2.111 km NNW of Whitley Gardens, California · 15131 days ago · 12 km deep · 84 km away
  42. 2.59 km S of Tres Pinos, California · 15131 days ago · 2 km deep · 57 km away
  43. 2.39 km S of Tres Pinos, California · 15131 days ago · 3 km deep · 57 km away
  44. 1.826 km NE of Greenfield, California · 15130 days ago · 6 km deep · 23 km away
  45. 1.516 km SSE of Tres Pinos, California · 15130 days ago · 5 km deep · 49 km away
  46. 1.625 km NW of San Simeon, California · 15130 days ago · 7 km deep · 93 km away
  47. 2.010 km S of Tres Pinos, California · 15130 days ago · 3 km deep · 56 km away
  48. 1.84 km N of Coalinga, California · 15129 days ago · 12 km deep · 50 km away
  49. 2.318 km SSE of Tres Pinos, California · 15129 days ago · 6 km deep · 47 km away
  50. 1.629 km SE of Big Sur, California · 15128 days ago · 6 km deep · 82 km away
  51. 3.08 km NE of San Martin, California · 15128 days ago · 7 km deep · 99 km away
  52. 1.629 km SE of Big Sur, California · 15128 days ago · 7 km deep · 82 km away
  53. 1.817 km NW of Parkfield, California · 15128 days ago · 5 km deep · 55 km away
  54. 1.98 km ENE of San Martin, California · 15128 days ago · 7 km deep · 97 km away
  55. 2.923 km ENE of Soledad, California · 15128 days ago · 4 km deep · 29 km away
  56. 2.58 km ENE of San Martin, California · 15128 days ago · 7 km deep · 99 km away
  57. 3.08 km ENE of San Martin, California · 15127 days ago · 7 km deep · 99 km away
  58. 2.09 km NE of San Martin, California · 15127 days ago · 7 km deep · 100 km away
  59. 2.010 km NNW of Coalinga, California · 15127 days ago · 8 km deep · 44 km away
  60. 1.523 km ENE of Soledad, California · 15127 days ago · 4 km deep · 30 km away

The first 60 of 182.

Before

  1. 1.712 km ENE of Shandon, California · 15142 days ago · 9 km deep · 100 km away
  2. 1.610 km NE of Coalinga, California · 15142 days ago · 7 km deep · 52 km away
  3. 1.610 km NE of Coalinga, California · 15142 days ago · 8 km deep · 52 km away
  4. 3.210 km NE of Coalinga, California · 15142 days ago · 8 km deep · 52 km away
  5. 2.910 km NE of Coalinga, California · 15142 days ago · 7 km deep · 52 km away
  6. 3.710 km NE of Coalinga, California · 15142 days ago · 9 km deep · 51 km away
  7. 1.711 km NE of Coalinga, California · 15142 days ago · 7 km deep · 51 km away
  8. 1.610 km NE of Coalinga, California · 15142 days ago · 9 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc45694. Read Tue, Sep 22, 2026, 11:28 PM UTC.