California earthquakes

M2.3 earthquake 11 km SSE of Tres Pinos, California

A magnitude 2.3 earthquake struck 11 km SSE of Tres Pinos, California on Wed, Oct 7, 1987, 9:45 PM PDT (04:45 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M4.0 21 km NNE 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
2.3 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1987-10-08 04:45:55 UTC
Depth
16.1 km (10.0 mi), shallow
Epicenter
36.694° N, 121.289° 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 0.2 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
66°
Stations used
59

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 173 in the 60 days after this one and 61 in the 30 days before it.

After

  1. 2.217 km NE of East Foothills, California · 14241 days ago · 7 km deep · 97 km away
  2. 1.621 km NE of Soledad, California · 14240 days ago · 6 km deep · 18 km away
  3. 1.513 km WNW of Diablo Grande, California · 14240 days ago · 6 km deep · 83 km away
  4. 1.614 km NNW of Coalinga, California · 14240 days ago · 10 km deep · 92 km away
  5. 1.725 km NE of King City, California · 14240 days ago · 1 km deep · 44 km away
  6. 2.713 km ENE of East Foothills, California · 14239 days ago · 5 km deep · 89 km away
  7. 1.75 km NNE of Tres Pinos, California · 14239 days ago · 4 km deep · 15 km away
  8. 1.715 km NNW of Coalinga, California · 14239 days ago · 8 km deep · 91 km away
  9. 1.519 km SSE of Livermore, California · 14238 days ago · 6 km deep · 98 km away
  10. 2.719 km SSE of Tres Pinos, California · 14237 days ago · 10 km deep · 8 km away
  11. 2.813 km N of Morgan Hill, California · 14236 days ago · 4 km deep · 69 km away
  12. 1.624 km ENE of Soledad, California · 14236 days ago · 3 km deep · 30 km away
  13. 2.112 km NE of East Foothills, California · 14235 days ago · 7 km deep · 95 km away
  14. 1.911 km N of Coalinga, California · 14235 days ago · 12 km deep · 95 km away
  15. 2.03 km WSW of San Juan Bautista, California · 14234 days ago · 8 km deep · 30 km away
  16. 1.624 km WSW of Lockwood, California · 14233 days ago · 10 km deep · 90 km away
  17. 2.521 km SSE of Tres Pinos, California · 14233 days ago · 6 km deep · 11 km away
  18. 1.821 km SSE of Tres Pinos, California · 14233 days ago · 5 km deep · 11 km away
  19. 1.715 km E of Seven Trees, California · 14233 days ago · 6 km deep · 74 km away
  20. 2.04 km SE of Aromas, California · 14232 days ago · 7 km deep · 33 km away
  21. 2.116 km NNW of Coalinga, California · 14232 days ago · 11 km deep · 90 km away
  22. 1.79 km E of San Martin, California · 14232 days ago · 9 km deep · 49 km away
  23. 2.918 km SSE of Livermore, California · 14231 days ago · 7 km deep · 100 km away
  24. 2.821 km NE of Soledad, California · 14231 days ago · 9 km deep · 22 km away
  25. 1.621 km NE of Soledad, California · 14231 days ago · 8 km deep · 22 km away
  26. 1.621 km SSE of Tres Pinos, California · 14231 days ago · 6 km deep · 11 km away
  27. 1.521 km SSE of Tres Pinos, California · 14231 days ago · 6 km deep · 11 km away
  28. 2.319 km WSW of Three Rocks, California · 14230 days ago · 16 km deep · 68 km away
  29. 1.721 km NW of San Simeon, California · 14229 days ago · 6 km deep · 99 km away
  30. 2.02 km SE of San Ardo, California · 14229 days ago · 10 km deep · 85 km away
  31. 1.65 km SE of Tres Pinos, California · 14228 days ago · 7 km deep · 8 km away
  32. 2.17 km S of Three Rocks, California · 14228 days ago · 9 km deep · 85 km away
  33. 1.67 km W of Gilroy, California · 14227 days ago · 6 km deep · 46 km away
  34. 1.614 km E of Seven Trees, California · 14227 days ago · 2 km deep · 74 km away
  35. 2.018 km NE of East Foothills, California · 14226 days ago · 5 km deep · 96 km away
  36. 1.65 km SW of Gilroy, California · 14225 days ago · 4 km deep · 43 km away
  37. 1.68 km SE of Los Banos, California · 14224 days ago · 4 km deep · 57 km away
  38. 1.8Central California · 14224 days ago · 9 km deep · 11 km away
  39. 1.636 km ESE of Tres Pinos, California · 14223 days ago · 0 km deep · 32 km away
  40. 1.66 km N of East Foothills, California · 14223 days ago · 1 km deep · 94 km away
  41. 2.215 km N of Morgan Hill, CA · 14223 days ago · 3 km deep · 71 km away
  42. 1.85 km SE of Tres Pinos, California · 14222 days ago · 9 km deep · 7 km away
  43. 1.55 km SW of Gilroy, California · 14222 days ago · 3 km deep · 41 km away
  44. 2.015 km N of Coalinga, California · 14222 days ago · 14 km deep · 93 km away
  45. 3.210 km S of Tres Pinos, California · 14221 days ago · 3 km deep · 2 km away
  46. 2.021 km S of Big Sur, California · 14221 days ago · 17 km deep · 84 km away
  47. 1.726 km ENE of Soledad, California · 14221 days ago · 7 km deep · 24 km away
  48. 2.122 km WSW of Greenfield, California · 14221 days ago · 13 km deep · 55 km away
  49. 2.02 km SSE of Alum Rock, California · 14221 days ago · 7 km deep · 86 km away
  50. 3.322 km NNE of Soledad, California · 14221 days ago · 9 km deep · 13 km away
  51. 1.522 km NNE of Soledad, California · 14221 days ago · 8 km deep · 12 km away
  52. 2.511 km ESE of East Foothills, California · 14219 days ago · 8 km deep · 80 km away
  53. 2.38 km N of East Foothills, California · 14218 days ago · 6 km deep · 96 km away
  54. 1.822 km NE of Soledad, California · 14218 days ago · 4 km deep · 16 km away
  55. 1.526 km NE of Greenfield, California · 14218 days ago · 7 km deep · 36 km away
  56. 1.618 km SSE of Tres Pinos, California · 14217 days ago · 8 km deep · 8 km away
  57. 3.215 km E of Seven Trees, California · 14217 days ago · 6 km deep · 74 km away
  58. 1.615 km E of Seven Trees, California · 14217 days ago · 5 km deep · 74 km away
  59. 1.615 km E of Seven Trees, California · 14217 days ago · 5 km deep · 74 km away
  60. 1.61 km NNW of Cambrian Park, California · 14217 days ago · 4 km deep · 86 km away

The first 60 of 173.

Before

  1. 2.213 km ENE of East Foothills, California · 14242 days ago · 5 km deep · 89 km away
  2. 1.613 km ENE of East Foothills, California · 14242 days ago · 7 km deep · 90 km away
  3. 1.616 km E of Seven Trees, California · 14244 days ago · 6 km deep · 74 km away
  4. 1.812 km ESE of East Foothills, California · 14244 days ago · 8 km deep · 78 km away
  5. 2.022 km NE of Soledad, California · 14244 days ago · 4 km deep · 15 km away
  6. 1.613 km N of Morgan Hill, California · 14245 days ago · 5 km deep · 69 km away
  7. 2.621 km NE of Soledad, California · 14247 days ago · 7 km deep · 18 km away
  8. 2.423 km NE of Greenfield, California · 14247 days ago · 7 km deep · 33 km away
  9. 1.8Northern California · 14247 days ago · 12 km deep · 53 km away
  10. 1.823 km NE of King City, California · 14247 days ago · 7 km deep · 51 km away
  11. 1.66 km SE of Tres Pinos, California · 14247 days ago · 5 km deep · 7 km away
  12. 1.86 km ENE of Hollister, California · 14248 days ago · 6 km deep · 20 km away
  13. 4.822 km NE of San Ardo, California · 14248 days ago · 27 km deep · 79 km away
  14. 1.712 km NE of East Foothills, California · 14249 days ago · 7 km deep · 96 km away
  15. 2.612 km NE of East Foothills, California · 14249 days ago · 7 km deep · 95 km away
  16. 2.018 km NE of East Foothills, California · 14250 days ago · 6 km deep · 97 km away
  17. 2.06 km ENE of Hollister, California · 14251 days ago · 7 km deep · 22 km away
  18. 2.08 km S of Davenport, California · 14252 days ago · 6 km deep · 85 km away
  19. 1.614 km WNW of Coalinga, California · 14252 days ago · 6 km deep · 90 km away
  20. 1.616 km N of Coalinga, California · 14252 days ago · 11 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc106964. Read Sun, Oct 4, 2026, 10:53 PM UTC.