California earthquakes

M1.9 earthquake 14 km E of Seven Trees, California

A magnitude 1.9 earthquake struck 14 km E of Seven Trees, California on Tue, Jun 23, 1987, 4:30 PM PDT (23:30 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.3 6 km NE of East Foothills, California. This one was a foreshock.

Seven Trees forecastMore in California

Map

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

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The earthquake

Magnitude
1.9 (md), micro
Local time
UTC
1987-06-23 23:30:33 UTC
Depth
1.4 km (0.8 mi), shallow
Epicenter
37.294° N, 121.677° 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 0.1 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
29°
Stations used
42

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 120 in the 60 days after this one and 28 in the 30 days before it.

After

  1. 1.65 km NNE of Tres Pinos, California · 14336 days ago · 4 km deep · 61 km away
  2. 2.36 km NE of East Foothills, California · 14336 days ago · 10 km deep · 16 km away
  3. 2.021 km NE of Soledad, California · 14335 days ago · 3 km deep · 93 km away
  4. 1.619 km SSE of Livermore, California · 14334 days ago · 3 km deep · 26 km away
  5. 1.722 km NNE of Soledad, California · 14333 days ago · 4 km deep · 89 km away
  6. 2.68 km ENE of Morgan Hill, California · 14333 days ago · 3 km deep · 18 km away
  7. 2.327 km E of Tres Pinos, California · 14333 days ago · 5 km deep · 84 km away
  8. 1.813 km ENE of East Foothills, California · 14333 days ago · 7 km deep · 12 km away
  9. 2.518 km SE of Tres Pinos, California · 14333 days ago · 7 km deep · 82 km away
  10. 1.85 km NNE of Tres Pinos, California · 14332 days ago · 6 km deep · 62 km away
  11. 1.812 km NNE of East Foothills, California · 14332 days ago · 4 km deep · 21 km away
  12. 1.65 km NNE of Tres Pinos, California · 14330 days ago · 6 km deep · 61 km away
  13. 1.819 km SSE of Tres Pinos, California · 14328 days ago · 9 km deep · 83 km away
  14. 1.612 km E of Blackhawk, California · 14328 days ago · 16 km deep · 59 km away
  15. 3.31 km NNE of Waldon, California · 14327 days ago · 11 km deep · 78 km away
  16. 1.521 km NE of Soledad, California · 14327 days ago · 3 km deep · 93 km away
  17. 3.120 km SSE of Tres Pinos, California · 14327 days ago · 5 km deep · 85 km away
  18. 2.33 km NNE of Pittsburg, California · 14327 days ago · 19 km deep · 86 km away
  19. 2.03 km SSE of Concord, California · 14326 days ago · 10 km deep · 78 km away
  20. 2.510 km SW of Ridgemark, California · 14326 days ago · 7 km deep · 64 km away
  21. 1.67 km ENE of Hollister, California · 14326 days ago · 4 km deep · 55 km away
  22. 2.05 km SE of Tres Pinos, California · 14325 days ago · 6 km deep · 70 km away
  23. 1.55 km SE of Tres Pinos, California · 14324 days ago · 7 km deep · 70 km away
  24. 1.627 km NE of Soledad, California · 14324 days ago · 9 km deep · 97 km away
  25. 1.613 km N of Morgan Hill, California · 14324 days ago · 6 km deep · 5 km away
  26. 1.514 km NNE of Morgan Hill, California · 14324 days ago · 3 km deep · 9 km away
  27. 1.99 km E of San Martin, California · 14324 days ago · 8 km deep · 27 km away
  28. 2.113 km N of Morgan Hill, California · 14323 days ago · 5 km deep · 5 km away
  29. 1.54 km NE of Tres Pinos, California · 14323 days ago · 9 km deep · 64 km away
  30. 3.613 km N of Morgan Hill, California · 14322 days ago · 6 km deep · 6 km away
  31. 1.612 km N of Morgan Hill, California · 14322 days ago · 7 km deep · 7 km away
  32. 1.67 km ENE of Gilroy, California · 14322 days ago · 6 km deep · 33 km away
  33. 1.95 km SW of Gilroy, California · 14322 days ago · 7 km deep · 37 km away
  34. 2.013 km N of Morgan Hill, California · 14322 days ago · 5 km deep · 6 km away
  35. 1.615 km SSE of Livermore, California · 14321 days ago · 3 km deep · 29 km away
  36. 2.412 km E of Blackhawk, California · 14321 days ago · 10 km deep · 59 km away
  37. 2.515 km SSE of Livermore, California · 14320 days ago · 2 km deep · 29 km away
  38. 1.715 km SSE of Livermore, California · 14320 days ago · 2 km deep · 29 km away
  39. 2.115 km SSE of Livermore, California · 14320 days ago · 2 km deep · 29 km away
  40. 1.88 km NE of San Juan Bautista, California · 14320 days ago · 8 km deep · 47 km away
  41. 2.03 km ESE of Berkeley, California · 14319 days ago · 11 km deep · 81 km away
  42. 1.522 km NE of Soledad, California · 14319 days ago · 2 km deep · 98 km away
  43. 2.221 km SSE of Tres Pinos, California · 14318 days ago · 4 km deep · 85 km away
  44. 2.412 km ESE of East Foothills, California · 14318 days ago · 6 km deep · 4 km away
  45. 1.519 km SSE of Livermore, California · 14318 days ago · 3 km deep · 26 km away
  46. 1.65 km SW of Ridgemark, California · 14317 days ago · 11 km deep · 62 km away
  47. 2.917 km NW of Diablo Grande, California · 14315 days ago · 5 km deep · 36 km away
  48. 1.814 km E of Seven Trees, California · 14315 days ago · 3 km deep · 1 km away
  49. 1.814 km N of Morgan Hill, California · 14315 days ago · 6 km deep · 5 km away
  50. 2.22 km NNE of Pittsburg, California · 14314 days ago · 17 km deep · 86 km away
  51. 1.716 km NE of Gonzales, California · 14314 days ago · 11 km deep · 85 km away
  52. 1.59 km NE of Gilroy, California · 14313 days ago · 8 km deep · 32 km away
  53. 2.49 km NE of San Martin, California · 14312 days ago · 7 km deep · 20 km away
  54. 2.58 km NE of Morgan Hill, California · 14312 days ago · 3 km deep · 15 km away
  55. 1.73 km N of Interlaken, California · 14312 days ago · 13 km deep · 35 km away
  56. 1.78 km NE of Morgan Hill, California · 14312 days ago · 3 km deep · 15 km away
  57. 1.812 km N of Morgan Hill, California · 14311 days ago · 4 km deep · 7 km away
  58. 1.914 km NE of East Foothills, California · 14311 days ago · 9 km deep · 18 km away
  59. 1.5Northern California · 14311 days ago · 0 km deep · 42 km away
  60. 2.521 km NE of Soledad, California · 14311 days ago · 7 km deep · 90 km away

The first 60 of 120.

Before

  1. 1.840 km ESE of Tres Pinos, California · 14336 days ago · 5 km deep · 100 km away
  2. 2.09 km SSW of Ridgemark, California · 14336 days ago · 7 km deep · 66 km away
  3. 1.63 km SSW of Hillsborough, California · 14337 days ago · 6 km deep · 69 km away
  4. 1.94 km ESE of Interlaken, California · 14337 days ago · 10 km deep · 39 km away
  5. 1.519 km SSE of Livermore, California · 14337 days ago · 7 km deep · 25 km away
  6. 1.525 km ENE of Tres Pinos, California · 14338 days ago · 2 km deep · 72 km away
  7. 1.99 km SSW of Ridgemark, California · 14338 days ago · 7 km deep · 66 km away
  8. 1.615 km SE of Livermore, California · 14338 days ago · 2 km deep · 30 km away
  9. 1.61 km N of Kensington, California · 14339 days ago · 6 km deep · 88 km away
  10. 2.510 km E of Blackhawk, California · 14339 days ago · 13 km deep · 61 km away
  11. 1.915 km SSE of Tres Pinos, California · 14343 days ago · 5 km deep · 80 km away
  12. 2.218 km NE of East Foothills, California · 14343 days ago · 6 km deep · 24 km away
  13. 2.45 km N of Port Costa, California · 14344 days ago · 10 km deep · 99 km away
  14. 1.511 km ESE of Gilroy, California · 14345 days ago · 4 km deep · 40 km away
  15. 1.922 km NNE of Soledad, California · 14346 days ago · 2 km deep · 89 km away
  16. 1.88 km NE of Interlaken, California · 14346 days ago · 4 km deep · 32 km away
  17. 1.811 km S of Tres Pinos, California · 14347 days ago · 4 km deep · 75 km away
  18. 1.610 km E of Blackhawk, California · 14347 days ago · 18 km deep · 61 km away
  19. 2.116 km SSE of Tres Pinos, California · 14347 days ago · 5 km deep · 80 km away
  20. 3.12 km NNW of Communications Hill, California · 14348 days ago · 10 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc102254. Read Tue, Sep 22, 2026, 10:30 PM UTC.