California earthquakes

M2.5 earthquake 1 km NE of Aromas, California

A magnitude 2.5 earthquake struck 1 km NE of Aromas, California on Sat, Jan 31, 1987, 8:12 PM PST (04:12 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.6 27 km NE of King City, 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), micro
Local time
UTC
1987-02-01 04:12:20 UTC
Depth
5.2 km (3.2 mi), shallow
Epicenter
36.901° N, 121.630° 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
±0.13
Depth from
From location
Station coverage gap
41°
Stations used
72

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 174 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.732 km NE of Greenfield, California · 14467 days ago · 9 km deep · 74 km away
  2. 2.31 km NE of Aromas, California · 14467 days ago · 5 km deep · 0 km away
  3. 1.614 km WSW of Soledad, California · 14467 days ago · 7 km deep · 61 km away
  4. 1.717 km NE of East Foothills, California · 14467 days ago · 5 km deep · 67 km away
  5. 1.717 km SW of Soledad, California · 14467 days ago · 9 km deep · 69 km away
  6. 1.65 km S of San Ramon, California · 14466 days ago · 7 km deep · 98 km away
  7. 1.812 km S of Tres Pinos, California · 14465 days ago · 4 km deep · 38 km away
  8. 1.711 km ESE of Livermore, California · 14465 days ago · 6 km deep · 83 km away
  9. 2.513 km ESE of Alum Rock, California · 14465 days ago · 7 km deep · 46 km away
  10. 2.513 km ESE of Alum Rock, California · 14465 days ago · 7 km deep · 46 km away
  11. 2.48 km NE of Gilroy, California · 14465 days ago · 4 km deep · 21 km away
  12. 2.627 km NE of King City, California · 14464 days ago · 5 km deep · 83 km away
  13. 2.45 km NE of East Foothills, California · 14464 days ago · 7 km deep · 58 km away
  14. 1.86 km ENE of Hollister, California · 14464 days ago · 6 km deep · 26 km away
  15. 2.110 km ESE of Gilroy, California · 14464 days ago · 9 km deep · 18 km away
  16. 1.96 km NE of Interlaken, California · 14463 days ago · 9 km deep · 11 km away
  17. 1.810 km ESE of Gilroy, California · 14463 days ago · 9 km deep · 18 km away
  18. 1.920 km NNE of Soledad, California · 14463 days ago · 5 km deep · 49 km away
  19. 1.532 km SSW of Los Banos, California · 14463 days ago · 1 km deep · 63 km away
  20. 2.28 km SSE of Sunol, California · 14463 days ago · 7 km deep · 72 km away
  21. 2.124 km NE of Greenfield, California · 14463 days ago · 6 km deep · 70 km away
  22. 1.817 km NE of East Foothills, California · 14462 days ago · 8 km deep · 67 km away
  23. 2.216 km SSE of Livermore, California · 14462 days ago · 3 km deep · 72 km away
  24. 1.516 km NE of East Foothills, California · 14461 days ago · 7 km deep · 66 km away
  25. 1.7Northern California · 14461 days ago · 7 km deep · 48 km away
  26. 1.6Central California · 14461 days ago · 3 km deep · 66 km away
  27. 1.813 km ENE of East Foothills, California · 14461 days ago · 7 km deep · 60 km away
  28. 1.718 km NE of East Foothills, California · 14460 days ago · 8 km deep · 68 km away
  29. 2.213 km ENE of East Foothills, California · 14460 days ago · 7 km deep · 60 km away
  30. 2.812 km SE of Sunol, California · 14460 days ago · 10 km deep · 69 km away
  31. 1.613 km ENE of East Foothills, California · 14460 days ago · 7 km deep · 59 km away
  32. 2.010 km ESE of Gilroy, California · 14460 days ago · 8 km deep · 18 km away
  33. 2.015 km SSE of Livermore, California · 14459 days ago · 4 km deep · 73 km away
  34. 1.77 km NNE of East Foothills, California · 14458 days ago · 7 km deep · 62 km away
  35. 1.812 km NNE of Morgan Hill, California · 14458 days ago · 5 km deep · 38 km away
  36. 1.612 km N of Morgan Hill, California · 14458 days ago · 4 km deep · 38 km away
  37. 2.712 km N of Morgan Hill, California · 14458 days ago · 6 km deep · 38 km away
  38. 1.718 km SSE of Tres Pinos, California · 14458 days ago · 10 km deep · 45 km away
  39. 3.322 km NNE of Soledad, California · 14458 days ago · 6 km deep · 50 km away
  40. 2.322 km NNE of Soledad, California · 14458 days ago · 5 km deep · 50 km away
  41. 2.722 km SSE of Tres Pinos, California · 14458 days ago · 6 km deep · 50 km away
  42. 2.722 km SSE of Tres Pinos, California · 14458 days ago · 5 km deep · 50 km away
  43. 1.922 km NNE of Soledad, California · 14458 days ago · 5 km deep · 50 km away
  44. 1.713 km ESE of East Foothills, California · 14458 days ago · 4 km deep · 48 km away
  45. 2.216 km SSE of Livermore, California · 14457 days ago · 6 km deep · 73 km away
  46. 1.822 km NNE of Soledad, California · 14457 days ago · 6 km deep · 50 km away
  47. 2.422 km NNE of Soledad, California · 14457 days ago · 5 km deep · 50 km away
  48. 1.624 km NE of Greenfield, California · 14457 days ago · 6 km deep · 71 km away
  49. 2.735 km WNW of Three Rocks, California · 14457 days ago · 7 km deep · 84 km away
  50. 1.924 km ENE of Soledad, California · 14456 days ago · 2 km deep · 67 km away
  51. 2.621 km NE of Soledad, California · 14455 days ago · 2 km deep · 56 km away
  52. 2.026 km NE of Soledad, California · 14454 days ago · 8 km deep · 56 km away
  53. 1.58 km ENE of San Martin, California · 14454 days ago · 7 km deep · 26 km away
  54. 1.914 km WSW of Soledad, California · 14454 days ago · 9 km deep · 62 km away
  55. 1.68 km NNE of Milpitas, California · 14454 days ago · 3 km deep · 70 km away
  56. 2.424 km ENE of Greenfield, California · 14454 days ago · 6 km deep · 77 km away
  57. 2.225 km ENE of Greenfield, California · 14454 days ago · 5 km deep · 78 km away
  58. 1.712 km SE of Sunol, California · 14454 days ago · 9 km deep · 69 km away
  59. 1.723 km ENE of Soledad, California · 14453 days ago · 4 km deep · 65 km away
  60. 2.412 km N of Morgan Hill, California · 14453 days ago · 5 km deep · 38 km away

The first 60 of 174.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc93639. Read Tue, Sep 22, 2026, 3:14 PM UTC.