California earthquakes

M1.8 earthquake 21 km W of Three Rocks, California

A magnitude 1.8 earthquake struck 21 km W of Three Rocks, California on Sun, Oct 22, 1989, 10:35 AM PDT (17:35 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.4 Central California. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1989-10-22 17:35:37 UTC
Depth
8.4 km (5.2 mi), shallow
Epicenter
36.475° N, 120.631° 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
±0.25
Depth from
From location
Station coverage gap
113°
Stations used
20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 196 in the 60 days after this one and 107 in the 30 days before it.

After

  1. 2.025 km ENE of Soledad, California · 13494 days ago · 7 km deep · 41 km away
  2. 1.813 km S of Tres Pinos, California · 13494 days ago · 4 km deep · 63 km away
  3. 1.74 km W of Hollister, California · 13494 days ago · 4 km deep · 85 km away
  4. 2.19 km NNE of San Juan Bautista, California · 13494 days ago · 4 km deep · 92 km away
  5. 2.44 km ESE of Aromas, California · 13493 days ago · 6 km deep · 97 km away
  6. 2.431 km ENE of Soledad, California · 13493 days ago · 8 km deep · 38 km away
  7. 2.65 km NNW of Biola, California · 13493 days ago · 2 km deep · 66 km away
  8. 2.24 km ESE of Aromas, California · 13493 days ago · 5 km deep · 97 km away
  9. 1.631 km ENE of Soledad, California · 13493 days ago · 8 km deep · 38 km away
  10. 1.54 km W of Hollister, California · 13493 days ago · 4 km deep · 85 km away
  11. 1.8Central California · 13492 days ago · 2 km deep · 84 km away
  12. 1.9Central California · 13492 days ago · 4 km deep · 52 km away
  13. 2.42 km S of San Juan Bautista, California · 13492 days ago · 4 km deep · 90 km away
  14. 1.533 km ESE of Tres Pinos, California · 13491 days ago · 0 km deep · 37 km away
  15. 2.813 km SSE of Parkfield, California · 13491 days ago · 10 km deep · 80 km away
  16. 3.21 km SSW of San Juan Bautista, California · 13491 days ago · 3 km deep · 91 km away
  17. 1.76 km NE of Aromas, California · 13490 days ago · 15 km deep · 100 km away
  18. 1.611 km ESE of Coalinga, California · 13490 days ago · 10 km deep · 55 km away
  19. 1.85 km SSE of San Juan Bautista, California · 13489 days ago · 5 km deep · 86 km away
  20. 2.026 km NW of San Simeon, California · 13489 days ago · 6 km deep · 99 km away
  21. 2.121 km NE of Soledad, California · 13489 days ago · 7 km deep · 51 km away
  22. 2.012 km SW of Ridgemark, California · 13489 days ago · 14 km deep · 81 km away
  23. 1.78 km SSW of Tres Pinos, California · 13489 days ago · 1 km deep · 69 km away
  24. 1.68 km ENE of Coalinga, California · 13488 days ago · 11 km deep · 47 km away
  25. 2.53 km W of Hollister, California · 13488 days ago · 3 km deep · 84 km away
  26. 2.98 km SE of San Juan Bautista, California · 13488 days ago · 4 km deep · 83 km away
  27. 2.34 km NNW of Hollister, California · 13488 days ago · 8 km deep · 84 km away
  28. 1.51 km E of Aromas, California · 13488 days ago · 7 km deep · 100 km away
  29. 1.68 km SE of San Juan Bautista, California · 13487 days ago · 4 km deep · 83 km away
  30. 1.55 km WNW of San Juan Bautista, California · 13487 days ago · 6 km deep · 96 km away
  31. 1.89 km SSW of Tres Pinos, California · 13487 days ago · 2 km deep · 70 km away
  32. 2.011 km NE of San Simeon, California · 13487 days ago · 5 km deep · 95 km away
  33. 2.25 km WNW of San Juan Bautista, California · 13487 days ago · 7 km deep · 96 km away
  34. 1.511 km SW of Ridgemark, California · 13487 days ago · 16 km deep · 81 km away
  35. 2.312 km SW of Ridgemark, California · 13487 days ago · 14 km deep · 81 km away
  36. 1.812 km SE of Kettleman City, California · 13487 days ago · 20 km deep · 92 km away
  37. 1.82 km ESE of Aromas, California · 13487 days ago · 6 km deep · 99 km away
  38. 1.85 km S of Gilroy, California · 13487 days ago · 4 km deep · 100 km away
  39. 1.94 km ESE of Aromas, California · 13487 days ago · 5 km deep · 97 km away
  40. 2.94 km SE of Aromas, California · 13487 days ago · 7 km deep · 96 km away
  41. 2.64 km SE of Aromas, California · 13487 days ago · 7 km deep · 97 km away
  42. 1.923 km NE of King City, California · 13485 days ago · 7 km deep · 31 km away
  43. 2.511 km SW of Ridgemark, California · 13485 days ago · 15 km deep · 80 km away
  44. 1.812 km SW of Ridgemark, California · 13485 days ago · 14 km deep · 80 km away
  45. 1.74 km SE of Aromas, California · 13485 days ago · 7 km deep · 97 km away
  46. 2.512 km E of Le Grand, California · 13484 days ago · 13 km deep · 96 km away
  47. 1.91 km ENE of San Juan Bautista, California · 13484 days ago · 6 km deep · 89 km away
  48. 2.12 km SSW of San Juan Bautista, California · 13484 days ago · 5 km deep · 90 km away
  49. 1.724 km NE of Greenfield, California · 13484 days ago · 6 km deep · 36 km away
  50. 2.26 km NE of Ridgemark, California · 13484 days ago · 4 km deep · 73 km away
  51. 1.75 km W of Hollister, California · 13484 days ago · 4 km deep · 85 km away
  52. 2.111 km SW of Ridgemark, California · 13484 days ago · 15 km deep · 80 km away
  53. 1.71 km E of Aromas, California · 13484 days ago · 8 km deep · 100 km away
  54. 1.66 km NE of Ridgemark, California · 13484 days ago · 4 km deep · 73 km away
  55. 2.37 km NE of Ridgemark, California · 13483 days ago · 6 km deep · 73 km away
  56. 2.311 km NE of San Simeon, California · 13483 days ago · 5 km deep · 95 km away
  57. 1.510 km N of Coalinga, California · 13483 days ago · 8 km deep · 37 km away
  58. 2.23 km W of San Juan Bautista, California · 13483 days ago · 6 km deep · 94 km away
  59. 1.824 km ENE of Soledad, California · 13483 days ago · 2 km deep · 39 km away
  60. 1.522 km NE of Soledad, California · 13482 days ago · 4 km deep · 48 km away

The first 60 of 196.

Before

  1. 2.32 km E of Aromas, California · 13494 days ago · 7 km deep · 99 km away
  2. 1.628 km W of Volta, California · 13494 days ago · 0 km deep · 87 km away
  3. 1.99 km NE of Coalinga, California · 13495 days ago · 9 km deep · 43 km away
  4. 2.420 km SSE of Tres Pinos, California · 13495 days ago · 5 km deep · 55 km away
  5. 1.64 km N of San Juan Bautista, California · 13495 days ago · 6 km deep · 93 km away
  6. 2.415 km SSE of Tres Pinos, California · 13495 days ago · 7 km deep · 61 km away
  7. 1.69 km NNE of San Juan Bautista, California · 13495 days ago · 3 km deep · 93 km away
  8. 2.74 km ESE of Aromas, California · 13495 days ago · 5 km deep · 97 km away
  9. 2.59 km NNE of San Juan Bautista, California · 13496 days ago · 4 km deep · 92 km away
  10. 1.713 km S of Tres Pinos, California · 13496 days ago · 4 km deep · 63 km away
  11. 1.63 km SW of Ridgemark, California · 13496 days ago · 6 km deep · 77 km away
  12. 1.913 km S of Tres Pinos, California · 13496 days ago · 4 km deep · 63 km away
  13. 3.22 km SW of San Juan Bautista, California · 13496 days ago · 5 km deep · 92 km away
  14. 2.82 km SSW of San Juan Bautista, California · 13496 days ago · 4 km deep · 90 km away
  15. 2.53 km ESE of Aromas, California · 13496 days ago · 7 km deep · 98 km away
  16. 1.711 km SSE of Tres Pinos, California · 13496 days ago · 4 km deep · 63 km away
  17. 2.48 km SSE of Gilroy, California · 13496 days ago · 4 km deep · 94 km away
  18. 2.69 km NNE of San Juan Bautista, California · 13496 days ago · 5 km deep · 94 km away
  19. 2.521 km WSW of Three Rocks, California · 13496 days ago · 13 km deep · 10 km away
  20. 1.76 km SSW of Ridgemark, California · 13496 days ago · 7 km deep · 75 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc251679. Read Fri, Oct 2, 2026, 1:51 PM UTC.