California earthquakes

M1.7 earthquake 8 km ENE of Milpitas, California

A magnitude 1.7 earthquake struck 8 km ENE of Milpitas, California on Fri, Jan 23, 1987, 9:34 PM PST (05:34 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M2.1 10 km NNE of East Foothills, California. This one was a foreshock.

Milpitas 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
1987-01-24 05:34:56 UTC
Depth
6.5 km (4.1 mi), shallow
Epicenter
37.468° N, 121.822° 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
±0.22
Depth from
From location
Station coverage gap
53°
Stations used
32

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 159 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 1.54 km SSW of Loyola, California · 14486 days ago · 6 km deep · 31 km away
  2. 1.713 km ENE of East Foothills, California · 14486 days ago · 7 km deep · 12 km away
  3. 2.110 km NNE of East Foothills, California · 14485 days ago · 7 km deep · 5 km away
  4. 2.514 km E of Seven Trees, California · 14484 days ago · 3 km deep · 24 km away
  5. 1.815 km N of Morgan Hill, California · 14484 days ago · 2 km deep · 27 km away
  6. 2.115 km N of Morgan Hill, California · 14484 days ago · 2 km deep · 27 km away
  7. 2.26 km SSW of Gilroy, California · 14483 days ago · 4 km deep · 60 km away
  8. 1.916 km SSE of Livermore, California · 14483 days ago · 1 km deep · 17 km away
  9. 1.816 km SSE of Livermore, California · 14483 days ago · 1 km deep · 17 km away
  10. 1.617 km SSE of Livermore, California · 14481 days ago · 0 km deep · 17 km away
  11. 1.913 km S of Tres Pinos, California · 14481 days ago · 4 km deep · 100 km away
  12. 2.313 km S of Tres Pinos, California · 14481 days ago · 4 km deep · 100 km away
  13. 1.915 km SSE of Livermore, California · 14481 days ago · 4 km deep · 17 km away
  14. 3.82 km ENE of San Leandro, California · 14480 days ago · 12 km deep · 40 km away
  15. 2.212 km ESE of East Foothills, California · 14480 days ago · 7 km deep · 19 km away
  16. 2.46 km ENE of Hollister, California · 14480 days ago · 6 km deep · 78 km away
  17. 1.96 km ENE of Hollister, California · 14480 days ago · 6 km deep · 78 km away
  18. 2.24 km N of San Mateo, California · 14479 days ago · 8 km deep · 46 km away
  19. 1.56 km ENE of Hollister, California · 14479 days ago · 6 km deep · 78 km away
  20. 2.76 km ENE of Hollister, California · 14479 days ago · 6 km deep · 78 km away
  21. 2.51 km NE of Aromas, California · 14478 days ago · 5 km deep · 65 km away
  22. 1.86 km ENE of Hollister, California · 14478 days ago · 6 km deep · 78 km away
  23. 2.84 km NW of Broadmoor, California · 14478 days ago · 5 km deep · 67 km away
  24. 3.44 km NW of Broadmoor, California · 14478 days ago · 5 km deep · 67 km away
  25. 1.84 km NW of Broadmoor, California · 14477 days ago · 5 km deep · 68 km away
  26. 2.33 km W of San Juan Bautista, California · 14476 days ago · 6 km deep · 72 km away
  27. 2.93 km W of San Juan Bautista, California · 14476 days ago · 5 km deep · 73 km away
  28. 1.722 km NE of East Foothills, California · 14476 days ago · 8 km deep · 19 km away
  29. 1.62 km WSW of San Juan Bautista, California · 14475 days ago · 4 km deep · 73 km away
  30. 1.65 km S of Gilroy, California · 14475 days ago · 7 km deep · 61 km away
  31. 1.816 km N of Morgan Hill, California · 14475 days ago · 6 km deep · 26 km away
  32. 2.38 km SSW of Tres Pinos, California · 14474 days ago · 3 km deep · 93 km away
  33. 1.58 km SSW of Tres Pinos, California · 14474 days ago · 3 km deep · 93 km away
  34. 1.78 km NW of Davenport, California · 14474 days ago · 9 km deep · 58 km away
  35. 1.512 km ESE of East Foothills, California · 14473 days ago · 3 km deep · 18 km away
  36. 1.619 km SSE of Livermore, California · 14472 days ago · 6 km deep · 14 km away
  37. 1.519 km SSE of Livermore, California · 14472 days ago · 6 km deep · 15 km away
  38. 2.610 km WSW of Ridgemark, California · 14471 days ago · 6 km deep · 84 km away
  39. 2.0Northern California · 14471 days ago · 7 km deep · 12 km away
  40. 1.515 km SSE of Livermore, California · 14471 days ago · 4 km deep · 16 km away
  41. 2.117 km NE of East Foothills, California · 14470 days ago · 7 km deep · 12 km away
  42. 2.317 km NE of East Foothills, California · 14470 days ago · 7 km deep · 12 km away
  43. 3.517 km NE of East Foothills, California · 14470 days ago · 8 km deep · 12 km away
  44. 2.218 km NE of East Foothills, California · 14470 days ago · 8 km deep · 13 km away
  45. 2.117 km NE of East Foothills, California · 14470 days ago · 7 km deep · 12 km away
  46. 1.818 km NE of East Foothills, California · 14470 days ago · 8 km deep · 12 km away
  47. 1.616 km SSE of Livermore, California · 14469 days ago · 1 km deep · 17 km away
  48. 2.118 km NE of East Foothills, California · 14469 days ago · 8 km deep · 12 km away
  49. 3.317 km NE of East Foothills, California · 14469 days ago · 7 km deep · 12 km away
  50. 2.26 km NE of Ridgemark, California · 14469 days ago · 5 km deep · 82 km away
  51. 1.816 km SSE of Livermore, California · 14469 days ago · 1 km deep · 17 km away
  52. 1.718 km NE of East Foothills, California · 14468 days ago · 7 km deep · 12 km away
  53. 1.914 km E of Seven Trees, California · 14467 days ago · 6 km deep · 23 km away
  54. 2.31 km NE of Aromas, California · 14467 days ago · 5 km deep · 66 km away
  55. 1.717 km NE of East Foothills, California · 14467 days ago · 5 km deep · 13 km away
  56. 1.65 km S of San Ramon, California · 14466 days ago · 7 km deep · 33 km away
  57. 1.812 km S of Tres Pinos, California · 14465 days ago · 4 km deep · 99 km away
  58. 1.711 km ESE of Livermore, California · 14465 days ago · 6 km deep · 25 km away
  59. 2.513 km ESE of Alum Rock, California · 14464 days ago · 7 km deep · 21 km away
  60. 2.513 km ESE of Alum Rock, California · 14464 days ago · 7 km deep · 21 km away

The first 60 of 159.

Before

  1. 1.91 km W of Hollister, California · 14486 days ago · 4 km deep · 77 km away
  2. 1.815 km E of Seven Trees, California · 14488 days ago · 6 km deep · 25 km away
  3. 2.13 km WSW of Green Valley, California · 14488 days ago · 8 km deep · 91 km away
  4. 1.77 km NE of Tres Pinos, California · 14489 days ago · 4 km deep · 85 km away
  5. 1.78 km NE of Interlaken, California · 14489 days ago · 4 km deep · 53 km away
  6. 1.811 km E of Black Point-Green Point, California · 14490 days ago · 16 km deep · 86 km away
  7. 1.614 km SE of Livermore, California · 14490 days ago · 4 km deep · 18 km away
  8. 1.910 km NNW of Hollister, California · 14491 days ago · 2 km deep · 67 km away
  9. 1.69 km NE of San Martin, California · 14491 days ago · 6 km deep · 42 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc93159. Read Tue, Sep 22, 2026, 10:02 AM UTC.