California earthquakes

M1.6 earthquake 9 km SE of Sunol, California

A magnitude 1.6 earthquake struck 9 km SE of Sunol, California on Fri, Mar 13, 1987, 10:16 PM PST (06:16 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.1 5 km NNE of Tres Pinos, 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
1.6 (md), micro
Local time
UTC
1987-03-14 06:16:49 UTC
Depth
9.9 km (6.2 mi), shallow
Epicenter
37.532° N, 121.812° 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, 0.4 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
36°
Stations used
39

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 129 in the 60 days after this one and 79 in the 30 days before it.

After

  1. 1.918 km NE of East Foothills, California · 14444 days ago · 5 km deep · 11 km away
  2. 2.020 km ENE of East Foothills, California · 14443 days ago · 7 km deep · 18 km away
  3. 1.59 km NNE of Hollister, California · 14443 days ago · 7 km deep · 78 km away
  4. 1.618 km SSE of Livermore, California · 14442 days ago · 4 km deep · 11 km away
  5. 1.66 km NE of Ridgemark, California · 14441 days ago · 4 km deep · 87 km away
  6. 1.85 km NNE of Tres Pinos, California · 14440 days ago · 6 km deep · 90 km away
  7. 1.616 km SSE of Livermore, California · 14440 days ago · 6 km deep · 12 km away
  8. 1.66 km ENE of Hollister, California · 14440 days ago · 6 km deep · 84 km away
  9. 2.710 km SW of Ridgemark, California · 14439 days ago · 8 km deep · 93 km away
  10. 2.417 km NE of East Foothills, California · 14438 days ago · 6 km deep · 12 km away
  11. 2.910 km NNW of Hollister, California · 14438 days ago · 2 km deep · 73 km away
  12. 1.66 km NE of Interlaken, California · 14438 days ago · 10 km deep · 61 km away
  13. 1.513 km ENE of East Foothills, California · 14437 days ago · 8 km deep · 15 km away
  14. 2.1Northern California · 14437 days ago · 5 km deep · 21 km away
  15. 2.07 km NNE of East Foothills, California · 14436 days ago · 7 km deep · 9 km away
  16. 1.918 km NE of East Foothills, California · 14436 days ago · 6 km deep · 11 km away
  17. 1.79 km ESE of Seven Trees, California · 14436 days ago · 5 km deep · 33 km away
  18. 2.011 km S of Pescadero, California · 14434 days ago · 14 km deep · 64 km away
  19. 1.614 km E of Seven Trees, California · 14434 days ago · 2 km deep · 29 km away
  20. 1.814 km E of Seven Trees, California · 14434 days ago · 2 km deep · 29 km away
  21. 2.014 km E of Seven Trees, California · 14434 days ago · 2 km deep · 29 km away
  22. 1.92 km NNE of Aromas, California · 14434 days ago · 6 km deep · 71 km away
  23. 1.52 km N of Aromas, California · 14433 days ago · 6 km deep · 71 km away
  24. 1.818 km NE of East Foothills, California · 14433 days ago · 6 km deep · 12 km away
  25. 2.217 km SSE of Livermore, California · 14432 days ago · 1 km deep · 13 km away
  26. 1.94 km WSW of Broadmoor, California · 14432 days ago · 8 km deep · 65 km away
  27. 2.48 km ENE of San Martin, California · 14432 days ago · 8 km deep · 52 km away
  28. 1.815 km SSE of Livermore, California · 14431 days ago · 4 km deep · 12 km away
  29. 2.918 km SSE of Livermore, California · 14430 days ago · 2 km deep · 14 km away
  30. 1.5Northern California · 14430 days ago · 13 km deep · 10 km away
  31. 2.020 km NE of East Foothills, California · 14430 days ago · 1 km deep · 14 km away
  32. 1.76 km NNE of Tres Pinos, California · 14430 days ago · 4 km deep · 88 km away
  33. 1.514 km E of Seven Trees, California · 14430 days ago · 1 km deep · 30 km away
  34. 1.61 km ESE of Tres Pinos, California · 14428 days ago · 8 km deep · 94 km away
  35. 1.94 km ESE of Interlaken, California · 14428 days ago · 10 km deep · 67 km away
  36. 1.820 km NE of East Foothills, California · 14427 days ago · 0 km deep · 14 km away
  37. 1.712 km NE of East Foothills, California · 14427 days ago · 8 km deep · 11 km away
  38. 2.120 km NE of East Foothills, California · 14426 days ago · 1 km deep · 14 km away
  39. 1.920 km NE of East Foothills, California · 14426 days ago · 0 km deep · 14 km away
  40. 1.618 km NE of East Foothills, California · 14426 days ago · 6 km deep · 12 km away
  41. 1.85 km NNE of Tres Pinos, California · 14426 days ago · 7 km deep · 91 km away
  42. 1.718 km NE of East Foothills, California · 14425 days ago · 5 km deep · 11 km away
  43. 1.86 km S of Tres Pinos, California · 14425 days ago · 8 km deep · 99 km away
  44. 1.912 km ESE of East Foothills, California · 14425 days ago · 1 km deep · 24 km away
  45. 1.66 km ENE of Hollister, California · 14425 days ago · 9 km deep · 84 km away
  46. 2.07 km SW of Mountain House, California · 14424 days ago · 15 km deep · 30 km away
  47. 2.81 km NNW of Castro Valley, California · 14424 days ago · 5 km deep · 32 km away
  48. 2.014 km N of Morgan Hill, California · 14423 days ago · 5 km deep · 33 km away
  49. 1.612 km ENE of East Foothills, California · 14422 days ago · 8 km deep · 16 km away
  50. 1.512 km NE of East Foothills, California · 14421 days ago · 6 km deep · 11 km away
  51. 2.09 km SSW of Tres Pinos, California · 14420 days ago · 3 km deep · 100 km away
  52. 2.07 km E of East Foothills, California · 14420 days ago · 6 km deep · 19 km away
  53. 1.73 km NW of Sunol, California · 14419 days ago · 3 km deep · 13 km away
  54. 1.519 km NE of East Foothills, California · 14419 days ago · 7 km deep · 12 km away
  55. 2.310 km ESE of East Foothills, California · 14418 days ago · 8 km deep · 23 km away
  56. 3.415 km SSE of Livermore, California · 14418 days ago · 4 km deep · 12 km away
  57. 2.610 km ESE of East Foothills, California · 14418 days ago · 7 km deep · 22 km away
  58. 2.113 km ENE of East Foothills, California · 14418 days ago · 7 km deep · 15 km away
  59. 1.713 km ENE of East Foothills, California · 14417 days ago · 7 km deep · 16 km away
  60. 1.66 km NNE of Tres Pinos, California · 14416 days ago · 4 km deep · 89 km away

The first 60 of 129.

Before

  1. 1.65 km N of Novato, California · 14445 days ago · 2 km deep · 96 km away
  2. 1.96 km NE of Tres Pinos, California · 14446 days ago · 8 km deep · 92 km away
  3. 1.86 km ENE of Hollister, California · 14447 days ago · 6 km deep · 84 km away
  4. 1.815 km SSE of Livermore, California · 14447 days ago · 4 km deep · 12 km away
  5. 1.58 km S of Antioch, California · 14447 days ago · 5 km deep · 44 km away
  6. 1.66 km NE of Ridgemark, California · 14447 days ago · 2 km deep · 87 km away
  7. 1.718 km NE of East Foothills, California · 14447 days ago · 7 km deep · 12 km away
  8. 1.86 km S of Antioch, California · 14448 days ago · 6 km deep · 46 km away
  9. 2.07 km S of Antioch, California · 14450 days ago · 13 km deep · 45 km away
  10. 2.28 km S of Antioch, California · 14450 days ago · 12 km deep · 44 km away
  11. 2.113 km ENE of East Foothills, California · 14450 days ago · 7 km deep · 14 km away
  12. 1.7Near the coast of Central California · 14451 days ago · 11 km deep · 91 km away
  13. 2.115 km E of Seven Trees, California · 14452 days ago · 6 km deep · 31 km away
  14. 1.818 km NE of East Foothills, California · 14453 days ago · 7 km deep · 11 km away
  15. 2.118 km NE of East Foothills, California · 14453 days ago · 6 km deep · 12 km away
  16. 1.718 km NE of East Foothills, California · 14454 days ago · 5 km deep · 12 km away
  17. 2.3Northern California · 14455 days ago · 7 km deep · 14 km away
  18. 2.8Central California · 14455 days ago · 5 km deep · 83 km away
  19. 1.78 km ENE of Hollister, California · 14455 days ago · 7 km deep · 84 km away
  20. 1.69 km NW of Broadmoor, California · 14456 days ago · 7 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc96722. Read Wed, Sep 30, 2026, 4:03 AM UTC.