California earthquakes

M1.6 earthquake 9 km SSE of Sunol, California

A magnitude 1.6 earthquake struck 9 km SSE of Sunol, California on Tue, May 8, 1984, 6:01 PM PDT (01:01 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.2 15 km NNE of Morgan Hill, 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1984-05-09 01:01:32 UTC
Depth
4.7 km (2.9 mi), shallow
Epicenter
37.525° N, 121.835° 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, 0.5 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
40°
Stations used
30

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 179 in the 60 days after this one and 188 in the 30 days before it.

After

  1. 1.715 km N of Morgan Hill, California · 15488 days ago · 5 km deep · 32 km away
  2. 1.79 km ENE of Seven Trees, California · 15487 days ago · 2 km deep · 25 km away
  3. 2.15 km N of Morgan Hill, California · 15487 days ago · 5 km deep · 42 km away
  4. 1.65 km NE of Day Valley, California · 15487 days ago · 5 km deep · 50 km away
  5. 2.38 km NE of San Martin, California · 15487 days ago · 8 km deep · 52 km away
  6. 2.413 km N of Morgan Hill, California · 15487 days ago · 3 km deep · 35 km away
  7. 2.68 km ENE of Morgan Hill, California · 15487 days ago · 2 km deep · 47 km away
  8. 1.57 km NE of San Martin, California · 15487 days ago · 3 km deep · 50 km away
  9. 1.58 km NNE of San Martin, California · 15487 days ago · 4 km deep · 48 km away
  10. 1.7Northern California · 15487 days ago · 2 km deep · 48 km away
  11. 1.916 km N of Morgan Hill, California · 15486 days ago · 5 km deep · 32 km away
  12. 1.77 km NE of San Martin, California · 15486 days ago · 3 km deep · 49 km away
  13. 1.615 km E of Seven Trees, California · 15486 days ago · 5 km deep · 31 km away
  14. 2.818 km N of Morgan Hill, California · 15486 days ago · 2 km deep · 32 km away
  15. 1.76 km NE of San Martin, California · 15486 days ago · 0 km deep · 51 km away
  16. 1.612 km N of Morgan Hill, California · 15486 days ago · 5 km deep · 36 km away
  17. 1.68 km NE of Morgan Hill, California · 15486 days ago · 3 km deep · 45 km away
  18. 1.711 km ESE of Alum Rock, California · 15486 days ago · 0 km deep · 25 km away
  19. 2.22 km W of Ridgemark, California · 15486 days ago · 7 km deep · 89 km away
  20. 2.414 km N of Morgan Hill, California · 15486 days ago · 5 km deep · 34 km away
  21. 1.811 km NNE of Morgan Hill, California · 15486 days ago · 6 km deep · 37 km away
  22. 2.67 km ENE of Morgan Hill, California · 15486 days ago · 5 km deep · 48 km away
  23. 1.87 km ENE of Morgan Hill, California · 15486 days ago · 4 km deep · 48 km away
  24. 2.87 km ENE of Morgan Hill, California · 15486 days ago · 4 km deep · 48 km away
  25. 1.89 km WSW of Brentwood, California · 15486 days ago · 16 km deep · 43 km away
  26. 1.815 km E of Seven Trees, California · 15485 days ago · 5 km deep · 31 km away
  27. 1.714 km N of Morgan Hill, California · 15485 days ago · 5 km deep · 34 km away
  28. 1.912 km ESE of East Foothills, California · 15485 days ago · 6 km deep · 25 km away
  29. 2.018 km ESE of East Foothills, California · 15485 days ago · 2 km deep · 30 km away
  30. 1.914 km E of Seven Trees, California · 15485 days ago · 2 km deep · 29 km away
  31. 2.616 km N of Morgan Hill, California · 15485 days ago · 5 km deep · 32 km away
  32. 1.59 km ENE of Morgan Hill, California · 15484 days ago · 5 km deep · 48 km away
  33. 1.714 km E of Seven Trees, California · 15484 days ago · 8 km deep · 28 km away
  34. 1.68 km ENE of Morgan Hill, California · 15484 days ago · 1 km deep · 46 km away
  35. 2.27 km ENE of Morgan Hill, California · 15484 days ago · 1 km deep · 47 km away
  36. 2.418 km ESE of East Foothills, California · 15484 days ago · 2 km deep · 30 km away
  37. 1.615 km N of Morgan Hill, California · 15484 days ago · 5 km deep · 32 km away
  38. 1.615 km E of Seven Trees, California · 15484 days ago · 8 km deep · 31 km away
  39. 1.78 km NE of Morgan Hill, California · 15483 days ago · 2 km deep · 45 km away
  40. 1.813 km ESE of East Foothills, California · 15483 days ago · 2 km deep · 24 km away
  41. 1.915 km E of Seven Trees, California · 15483 days ago · 5 km deep · 31 km away
  42. 2.3Northern California · 15483 days ago · 6 km deep · 33 km away
  43. 2.38 km ENE of Morgan Hill, California · 15482 days ago · 2 km deep · 47 km away
  44. 1.712 km ESE of East Foothills, California · 15482 days ago · 7 km deep · 26 km away
  45. 1.79 km ENE of Morgan Hill, California · 15482 days ago · 2 km deep · 47 km away
  46. 2.08 km ENE of Morgan Hill, California · 15482 days ago · 2 km deep · 47 km away
  47. 2.28 km ENE of Morgan Hill, California · 15482 days ago · 3 km deep · 47 km away
  48. 1.68 km ENE of Morgan Hill, California · 15482 days ago · 3 km deep · 47 km away
  49. 2.212 km N of Morgan Hill, California · 15482 days ago · 5 km deep · 36 km away
  50. 1.612 km NNE of Morgan Hill, California · 15482 days ago · 7 km deep · 36 km away
  51. 2.214 km E of East Foothills, California · 15482 days ago · 4 km deep · 20 km away
  52. 1.515 km ESE of East Foothills, California · 15481 days ago · 2 km deep · 27 km away
  53. 1.616 km N of Morgan Hill, California · 15481 days ago · 7 km deep · 32 km away
  54. 1.615 km E of Seven Trees, California · 15481 days ago · 9 km deep · 31 km away
  55. 1.611 km ESE of Alum Rock, California · 15481 days ago · 0 km deep · 25 km away
  56. 1.97 km SE of Lexington Hills, California · 15481 days ago · 15 km deep · 46 km away
  57. 2.612 km ESE of Alum Rock, California · 15481 days ago · 0 km deep · 26 km away
  58. 1.912 km N of Morgan Hill, California · 15480 days ago · 6 km deep · 35 km away
  59. 1.59 km N of Morgan Hill, California · 15480 days ago · 4 km deep · 38 km away
  60. 1.75 km NE of San Martin, California · 15480 days ago · 2 km deep · 50 km away

The first 60 of 179.

Before

  1. 1.513 km N of Morgan Hill, California · 15488 days ago · 7 km deep · 34 km away
  2. 2.115 km N of Morgan Hill, California · 15488 days ago · 1 km deep · 33 km away
  3. 2.38 km ENE of Morgan Hill, California · 15488 days ago · 3 km deep · 47 km away
  4. 1.916 km E of Seven Trees, California · 15489 days ago · 8 km deep · 31 km away
  5. 2.75 km WSW of Vacaville, California · 15489 days ago · 32 km deep · 91 km away
  6. 1.916 km NNE of Morgan Hill, California · 15489 days ago · 1 km deep · 36 km away
  7. 3.115 km E of Seven Trees, California · 15489 days ago · 6 km deep · 31 km away
  8. 1.67 km ENE of Morgan Hill, California · 15489 days ago · 3 km deep · 48 km away
  9. 1.624 km ENE of East Foothills, California · 15490 days ago · 0 km deep · 26 km away
  10. 1.614 km E of Seven Trees, California · 15490 days ago · 4 km deep · 30 km away
  11. 1.79 km NNE of Morgan Hill, California · 15490 days ago · 4 km deep · 40 km away
  12. 1.714 km E of Seven Trees, California · 15490 days ago · 6 km deep · 27 km away
  13. 1.614 km E of Seven Trees, California · 15490 days ago · 9 km deep · 28 km away
  14. 2.813 km ESE of Alum Rock, California · 15490 days ago · 6 km deep · 27 km away
  15. 1.58 km NE of San Martin, California · 15490 days ago · 7 km deep · 51 km away
  16. 1.67 km NNE of San Martin, California · 15490 days ago · 4 km deep · 48 km away
  17. 2.011 km ESE of East Foothills, California · 15491 days ago · 4 km deep · 24 km away
  18. 1.88 km NE of San Martin, California · 15491 days ago · 5 km deep · 50 km away
  19. 1.77 km NNE of San Martin, California · 15491 days ago · 3 km deep · 48 km away
  20. 2.114 km E of Seven Trees, California · 15491 days ago · 5 km deep · 29 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc17908. Read Sat, Oct 3, 2026, 4:51 PM UTC.