California earthquakes

M2.5 earthquake Central California

A magnitude 2.5 earthquake struck in Central California on Thu, May 17, 1984, 11:01 AM PDT (18:01 UTC), 8 km (5 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
2.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1984-05-17 18:01:43 UTC
Depth
8.2 km (5.1 mi), shallow
Epicenter
36.885° N, 121.400° 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, 0.2 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
32°
Stations used
74

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 186 in the 60 days after this one and 190 in the 30 days before it.

After

  1. 2.314 km E of Seven Trees, California · 15477 days ago · 6 km deep · 52 km away
  2. 1.97 km NNE of Morgan Hill, California · 15477 days ago · 5 km deep · 40 km away
  3. 2.36 km E of East Foothills, California · 15477 days ago · 6 km deep · 63 km away
  4. 3.222 km NE of San Lucas, California · 15476 days ago · 6 km deep · 88 km away
  5. 3.013 km N of Morgan Hill, California · 15476 days ago · 6 km deep · 46 km away
  6. 2.816 km N of Morgan Hill, California · 15476 days ago · 8 km deep · 49 km away
  7. 1.712 km NNE of Morgan Hill, California · 15475 days ago · 4 km deep · 44 km away
  8. 3.211 km ESE of East Foothills, California · 15475 days ago · 7 km deep · 57 km away
  9. 1.711 km ESE of East Foothills, California · 15475 days ago · 7 km deep · 57 km away
  10. 2.110 km ESE of East Foothills, California · 15475 days ago · 7 km deep · 57 km away
  11. 1.911 km ESE of East Foothills, California · 15475 days ago · 7 km deep · 57 km away
  12. 1.916 km N of Morgan Hill, California · 15475 days ago · 5 km deep · 49 km away
  13. 1.713 km NE of East Foothills, California · 15475 days ago · 3 km deep · 72 km away
  14. 1.716 km E of Seven Trees, California · 15475 days ago · 5 km deep · 49 km away
  15. 2.08 km NE of Morgan Hill, California · 15475 days ago · 3 km deep · 37 km away
  16. 1.610 km NE of Morgan Hill, California · 15474 days ago · 8 km deep · 38 km away
  17. 2.013 km ESE of East Foothills, California · 15474 days ago · 1 km deep · 57 km away
  18. 1.513 km N of Morgan Hill, California · 15473 days ago · 4 km deep · 45 km away
  19. 1.85 km NNE of Morgan Hill, California · 15473 days ago · 2 km deep · 39 km away
  20. 1.715 km N of Morgan Hill, California · 15473 days ago · 5 km deep · 48 km away
  21. 1.55 km S of Livermore, California · 15473 days ago · 6 km deep · 89 km away
  22. 2.48 km ENE of Morgan Hill, California · 15473 days ago · 3 km deep · 35 km away
  23. 2.814 km N of Morgan Hill, California · 15473 days ago · 6 km deep · 47 km away
  24. 1.814 km E of Seven Trees, California · 15473 days ago · 5 km deep · 52 km away
  25. 1.810 km NE of Gilroy, California · 15473 days ago · 9 km deep · 23 km away
  26. 1.513 km N of Morgan Hill, California · 15472 days ago · 7 km deep · 46 km away
  27. 1.622 km ESE of Tres Pinos, California · 15472 days ago · 0 km deep · 34 km away
  28. 1.78 km ENE of Morgan Hill, California · 15471 days ago · 4 km deep · 34 km away
  29. 2.014 km E of Seven Trees, California · 15471 days ago · 0 km deep · 51 km away
  30. 1.721 km NE of Soledad, California · 15471 days ago · 7 km deep · 45 km away
  31. 2.616 km N of Morgan Hill, California · 15471 days ago · 8 km deep · 49 km away
  32. 1.78 km ENE of Morgan Hill, California · 15471 days ago · 3 km deep · 35 km away
  33. 1.614 km E of Seven Trees, California · 15471 days ago · 1 km deep · 51 km away
  34. 3.03 km N of North Fair Oaks, California · 15471 days ago · 9 km deep · 98 km away
  35. 1.75 km ESE of East Foothills, California · 15470 days ago · 0 km deep · 63 km away
  36. 1.612 km NNE of Morgan Hill, California · 15470 days ago · 6 km deep · 44 km away
  37. 1.87 km ENE of Morgan Hill, California · 15470 days ago · 3 km deep · 34 km away
  38. 1.812 km N of Morgan Hill, California · 15470 days ago · 3 km deep · 45 km away
  39. 1.9Northern California · 15469 days ago · 7 km deep · 63 km away
  40. 3.12 km SW of San Juan Bautista, California · 15469 days ago · 5 km deep · 15 km away
  41. 1.93 km W of Cambrian Park, California · 15469 days ago · 7 km deep · 65 km away
  42. 1.922 km NE of San Lucas, California · 15468 days ago · 6 km deep · 83 km away
  43. 1.716 km E of Seven Trees, California · 15468 days ago · 6 km deep · 49 km away
  44. 2.531 km W of Three Rocks, California · 15468 days ago · 5 km deep · 70 km away
  45. 2.221 km NNE of Soledad, California · 15468 days ago · 6 km deep · 38 km away
  46. 1.69 km NNE of Morgan Hill, California · 15468 days ago · 4 km deep · 39 km away
  47. 2.014 km SSE of Tres Pinos, California · 15468 days ago · 4 km deep · 27 km away
  48. 1.94 km N of Moss Landing, California · 15467 days ago · 11 km deep · 35 km away
  49. 1.59 km ENE of Morgan Hill, California · 15467 days ago · 4 km deep · 33 km away
  50. 1.511 km ESE of East Foothills, California · 15467 days ago · 0 km deep · 56 km away
  51. 2.114 km E of Seven Trees, California · 15467 days ago · 3 km deep · 52 km away
  52. 1.614 km S of Tres Pinos, California · 15467 days ago · 10 km deep · 27 km away
  53. 1.613 km E of Seven Trees, California · 15467 days ago · 3 km deep · 53 km away
  54. 1.79 km NNE of Morgan Hill, California · 15467 days ago · 5 km deep · 41 km away
  55. 1.613 km N of Morgan Hill, California · 15467 days ago · 4 km deep · 45 km away
  56. 2.124 km NE of Greenfield, California · 15466 days ago · 7 km deep · 55 km away
  57. 1.69 km NNE of Morgan Hill, California · 15466 days ago · 2 km deep · 40 km away
  58. 1.614 km N of Morgan Hill, California · 15466 days ago · 5 km deep · 47 km away
  59. 1.615 km E of Seven Trees, California · 15466 days ago · 8 km deep · 50 km away
  60. 2.115 km E of Seven Trees, California · 15466 days ago · 9 km deep · 50 km away

The first 60 of 186.

Before

  1. 2.416 km E of Seven Trees, California · 15477 days ago · 8 km deep · 50 km away
  2. 2.911 km ESE of Alum Rock, California · 15477 days ago · 0 km deep · 56 km away
  3. 3.5Northern California · 15477 days ago · 6 km deep · 51 km away
  4. 1.75 km SE of Livermore, California · 15478 days ago · 8 km deep · 89 km away
  5. 1.911 km WSW of Diablo Grande, California · 15478 days ago · 0 km deep · 52 km away
  6. 1.615 km ENE of Morgan Hill, California · 15478 days ago · 4 km deep · 37 km away
  7. 2.415 km E of Seven Trees, California · 15478 days ago · 6 km deep · 51 km away
  8. 2.223 km ENE of San Lucas, California · 15478 days ago · 8 km deep · 93 km away
  9. 2.011 km NNE of Morgan Hill, California · 15478 days ago · 5 km deep · 43 km away
  10. 1.712 km N of Morgan Hill, California · 15478 days ago · 6 km deep · 45 km away
  11. 2.216 km E of Seven Trees, California · 15479 days ago · 8 km deep · 50 km away
  12. 1.75 km NE of San Martin, California · 15479 days ago · 2 km deep · 31 km away
  13. 1.59 km N of Morgan Hill, California · 15479 days ago · 4 km deep · 43 km away
  14. 1.912 km N of Morgan Hill, California · 15479 days ago · 6 km deep · 46 km away
  15. 2.612 km ESE of Alum Rock, California · 15479 days ago · 0 km deep · 55 km away
  16. 1.97 km SE of Lexington Hills, California · 15479 days ago · 15 km deep · 53 km away
  17. 2.127 km SE of Tres Pinos, California · 15479 days ago · 5 km deep · 40 km away
  18. 1.611 km ESE of Alum Rock, California · 15479 days ago · 0 km deep · 56 km away
  19. 1.615 km E of Seven Trees, California · 15479 days ago · 9 km deep · 50 km away
  20. 1.91 km ENE of Del Rey Oaks, California · 15479 days ago · 4 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc18741. Read Thu, Oct 1, 2026, 8:00 PM UTC.