California earthquakes

M1.7 earthquake 14 km E of Seven Trees, California

A magnitude 1.7 earthquake struck 14 km E of Seven Trees, California on Thu, Apr 30, 1987, 5:08 PM PDT (00:08 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M4.0 4 km ESE of Piedmont, 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
1.7 (md), micro
Local time
UTC
1987-05-01 00:08:15 UTC
Depth
3.5 km (2.1 mi), shallow
Epicenter
37.294° N, 121.674° 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
±0.12
Depth from
From location
Station coverage gap
27°
Stations used
45

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 135 in the 60 days after this one and 77 in the 30 days before it.

After

  1. 2.05 km SE of Pleasanton, California · 14398 days ago · 6 km deep · 40 km away
  2. 1.75 km SE of Pleasanton, California · 14397 days ago · 6 km deep · 40 km away
  3. 1.53 km SSW of Alamo, California · 14397 days ago · 12 km deep · 68 km away
  4. 1.714 km E of Seven Trees, California · 14397 days ago · 2 km deep · 0 km away
  5. 1.618 km SSE of Tres Pinos, California · 14397 days ago · 6 km deep · 82 km away
  6. 1.94 km NE of Tres Pinos, California · 14397 days ago · 8 km deep · 63 km away
  7. 2.05 km NNE of Tres Pinos, California · 14396 days ago · 8 km deep · 62 km away
  8. 1.815 km SSE of Livermore, California · 14396 days ago · 4 km deep · 29 km away
  9. 1.65 km SW of Gilroy, California · 14396 days ago · 3 km deep · 37 km away
  10. 2.30 km E of Walnut Creek, California · 14396 days ago · 5 km deep · 76 km away
  11. 2.34 km SSE of San Juan Bautista, California · 14395 days ago · 7 km deep · 56 km away
  12. 1.622 km SSE of Tres Pinos, California · 14395 days ago · 4 km deep · 87 km away
  13. 1.613 km N of Morgan Hill, California · 14393 days ago · 3 km deep · 6 km away
  14. 1.618 km SSE of Tres Pinos, California · 14392 days ago · 6 km deep · 82 km away
  15. 1.7Northern California · 14392 days ago · 7 km deep · 23 km away
  16. 2.29 km SE of San Juan Bautista, California · 14391 days ago · 7 km deep · 61 km away
  17. 1.622 km NNE of Soledad, California · 14391 days ago · 6 km deep · 88 km away
  18. 1.90 km W of Walnut Creek, California · 14391 days ago · 5 km deep · 76 km away
  19. 1.89 km ESE of East Foothills, California · 14390 days ago · 1 km deep · 7 km away
  20. 1.614 km ESE of East Foothills, California · 14390 days ago · 1 km deep · 6 km away
  21. 2.19 km ESE of Gilroy, California · 14390 days ago · 5 km deep · 39 km away
  22. 1.521 km NE of Soledad, California · 14389 days ago · 2 km deep · 90 km away
  23. 2.421 km NE of Soledad, California · 14388 days ago · 2 km deep · 95 km away
  24. 2.14 km NE of Tres Pinos, California · 14388 days ago · 7 km deep · 63 km away
  25. 4.04 km ESE of Piedmont, California · 14388 days ago · 4 km deep · 73 km away
  26. 1.92 km NNW of Concord, California · 14388 days ago · 15 km deep · 84 km away
  27. 2.73 km ESE of Piedmont, California · 14388 days ago · 4 km deep · 73 km away
  28. 1.613 km N of Morgan Hill, California · 14387 days ago · 3 km deep · 6 km away
  29. 1.819 km SSE of Tres Pinos, California · 14387 days ago · 4 km deep · 84 km away
  30. 2.4Northern California · 14387 days ago · 14 km deep · 59 km away
  31. 1.713 km N of Hollister, California · 14386 days ago · 6 km deep · 45 km away
  32. 1.75 km NNE of San Leandro, California · 14386 days ago · 6 km deep · 68 km away
  33. 1.617 km SSE of Tres Pinos, California · 14385 days ago · 4 km deep · 81 km away
  34. 2.87 km NNE of East Foothills, California · 14384 days ago · 7 km deep · 19 km away
  35. 1.812 km NE of East Foothills, California · 14384 days ago · 5 km deep · 21 km away
  36. 2.613 km ENE of East Foothills, California · 14383 days ago · 7 km deep · 17 km away
  37. 2.20 km S of Clayton, California · 14383 days ago · 3 km deep · 75 km away
  38. 1.817 km SSE of Tres Pinos, California · 14383 days ago · 4 km deep · 81 km away
  39. 2.08 km WNW of Davenport, California · 14382 days ago · 12 km deep · 60 km away
  40. 2.315 km SSE of Livermore, California · 14381 days ago · 4 km deep · 30 km away
  41. 2.114 km N of Morgan Hill, California · 14381 days ago · 3 km deep · 4 km away
  42. 1.718 km SSE of Tres Pinos, California · 14380 days ago · 10 km deep · 83 km away
  43. 1.64 km E of Union City, California · 14379 days ago · 7 km deep · 43 km away
  44. 1.814 km N of Morgan Hill, California · 14379 days ago · 6 km deep · 4 km away
  45. 1.518 km SSE of Tres Pinos, California · 14378 days ago · 10 km deep · 83 km away
  46. 1.73 km SW of Hillsborough, California · 14378 days ago · 9 km deep · 71 km away
  47. 1.618 km NE of East Foothills, California · 14377 days ago · 4 km deep · 24 km away
  48. 2.018 km NE of East Foothills, California · 14377 days ago · 4 km deep · 24 km away
  49. 1.816 km E of Seven Trees, California · 14376 days ago · 6 km deep · 2 km away
  50. 2.622 km NE of Soledad, California · 14375 days ago · 4 km deep · 90 km away
  51. 1.61 km NE of Pacific Grove, California · 14374 days ago · 4 km deep · 77 km away
  52. 1.93 km SSW of Broadmoor, California · 14374 days ago · 8 km deep · 82 km away
  53. 1.514 km E of Seven Trees, California · 14373 days ago · 2 km deep · 0 km away
  54. 1.50 km NE of Pleasant Hill, California · 14373 days ago · 9 km deep · 81 km away
  55. 1.57 km ENE of Interlaken, California · 14373 days ago · 8 km deep · 35 km away
  56. 1.521 km NE of Soledad, California · 14373 days ago · 6 km deep · 92 km away
  57. 1.61 km NE of Pleasant Hill, California · 14373 days ago · 8 km deep · 81 km away
  58. 3.43 km N of San Leandro, California · 14373 days ago · 5 km deep · 66 km away
  59. 3.0Northern California · 14373 days ago · 5 km deep · 66 km away
  60. 2.43 km NNE of San Leandro, California · 14373 days ago · 5 km deep · 66 km away

The first 60 of 135.

Before

  1. 3.15 km NNE of Tres Pinos, California · 14398 days ago · 8 km deep · 62 km away
  2. 1.94 km NE of Tres Pinos, California · 14398 days ago · 7 km deep · 62 km away
  3. 4.15 km NNE of Tres Pinos, California · 14398 days ago · 8 km deep · 61 km away
  4. 1.8Central California · 14399 days ago · 7 km deep · 60 km away
  5. 1.94 km S of San Juan Bautista, California · 14399 days ago · 7 km deep · 56 km away
  6. 2.85 km NNE of Tres Pinos, California · 14399 days ago · 8 km deep · 61 km away
  7. 1.616 km SSE of Livermore, California · 14400 days ago · 3 km deep · 29 km away
  8. 1.90 km NNE of Acalanes Ridge, California · 14400 days ago · 7 km deep · 77 km away
  9. 2.314 km E of Seven Trees, California · 14400 days ago · 3 km deep · 0 km away
  10. 2.216 km SSE of Livermore, California · 14400 days ago · 8 km deep · 29 km away
  11. 2.61 km E of Walnut Creek, California · 14401 days ago · 5 km deep · 76 km away
  12. 1.80 km E of Walnut Creek, California · 14401 days ago · 4 km deep · 76 km away
  13. 1.81 km SE of Waldon, California · 14401 days ago · 5 km deep · 76 km away
  14. 2.21 km E of Walnut Creek, California · 14401 days ago · 5 km deep · 76 km away
  15. 1.63 km NNE of Pacific Grove, California · 14401 days ago · 11 km deep · 75 km away
  16. 2.025 km NE of Soledad, California · 14402 days ago · 9 km deep · 94 km away
  17. 2.00 km E of Walnut Creek, California · 14402 days ago · 3 km deep · 76 km away
  18. 2.3Central California · 14403 days ago · 4 km deep · 55 km away
  19. 2.82 km SW of Ridgemark, California · 14403 days ago · 13 km deep · 61 km away
  20. 1.77 km E of East Foothills, California · 14403 days ago · 8 km deep · 10 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc99643. Read Thu, Oct 1, 2026, 2:08 AM UTC.