California earthquakes

M1.5 earthquake 2 km N of Aromas, California

A magnitude 1.5 earthquake struck 2 km N of Aromas, California on Wed, Mar 25, 1987, 9:48 AM PST (17:48 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M1.8 18 km NE of East Foothills, California. This one was a foreshock.

Aromas 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
1.5 (md), micro
Local time
UTC
1987-03-25 17:48:06 UTC
Depth
6.1 km (3.8 mi), shallow
Epicenter
36.910° N, 121.639° 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, 0.3 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
37°
Stations used
34

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 140 in the 60 days after this one and 20 in the 30 days before it.

After

  1. 1.818 km NE of East Foothills, California · 14426 days ago · 6 km deep · 67 km away
  2. 2.1Central California · 14426 days ago · 5 km deep · 45 km away
  3. 2.217 km SSE of Livermore, California · 14425 days ago · 1 km deep · 71 km away
  4. 1.622 km NE of Soledad, California · 14424 days ago · 4 km deep · 61 km away
  5. 2.48 km ENE of San Martin, California · 14424 days ago · 8 km deep · 26 km away
  6. 1.72 km E of Big Sur, California · 14424 days ago · 15 km deep · 72 km away
  7. 1.815 km SSE of Livermore, California · 14424 days ago · 4 km deep · 73 km away
  8. 2.918 km SSE of Livermore, California · 14423 days ago · 2 km deep · 70 km away
  9. 1.5Northern California · 14422 days ago · 13 km deep · 67 km away
  10. 2.020 km NE of East Foothills, California · 14422 days ago · 1 km deep · 67 km away
  11. 1.622 km SE of Tres Pinos, California · 14422 days ago · 8 km deep · 52 km away
  12. 1.76 km NNE of Tres Pinos, California · 14422 days ago · 4 km deep · 30 km away
  13. 1.514 km E of Seven Trees, California · 14422 days ago · 1 km deep · 42 km away
  14. 1.61 km ESE of Tres Pinos, California · 14421 days ago · 8 km deep · 33 km away
  15. 1.94 km ESE of Interlaken, California · 14420 days ago · 10 km deep · 5 km away
  16. 1.820 km NE of East Foothills, California · 14419 days ago · 0 km deep · 67 km away
  17. 1.712 km NE of East Foothills, California · 14419 days ago · 8 km deep · 62 km away
  18. 2.120 km NE of East Foothills, California · 14419 days ago · 1 km deep · 67 km away
  19. 1.920 km NE of East Foothills, California · 14419 days ago · 0 km deep · 67 km away
  20. 1.618 km NE of East Foothills, California · 14419 days ago · 6 km deep · 67 km away
  21. 1.85 km NNE of Tres Pinos, California · 14418 days ago · 7 km deep · 32 km away
  22. 1.718 km NE of East Foothills, California · 14418 days ago · 5 km deep · 67 km away
  23. 2.0Central California · 14418 days ago · 17 km deep · 94 km away
  24. 1.86 km S of Tres Pinos, California · 14417 days ago · 8 km deep · 34 km away
  25. 1.912 km ESE of East Foothills, California · 14417 days ago · 1 km deep · 49 km away
  26. 1.66 km ENE of Hollister, California · 14417 days ago · 9 km deep · 27 km away
  27. 2.07 km SW of Mountain House, California · 14417 days ago · 15 km deep · 92 km away
  28. 2.81 km NNW of Castro Valley, California · 14417 days ago · 5 km deep · 98 km away
  29. 2.324 km NE of Greenfield, California · 14416 days ago · 2 km deep · 72 km away
  30. 2.014 km N of Morgan Hill, California · 14415 days ago · 5 km deep · 39 km away
  31. 2.910 km S of Tres Pinos, California · 14415 days ago · 4 km deep · 36 km away
  32. 2.610 km S of Tres Pinos, California · 14415 days ago · 4 km deep · 36 km away
  33. 1.612 km ENE of East Foothills, California · 14414 days ago · 8 km deep · 58 km away
  34. 1.524 km NE of Greenfield, California · 14413 days ago · 6 km deep · 72 km away
  35. 1.512 km NE of East Foothills, California · 14413 days ago · 6 km deep · 62 km away
  36. 2.09 km SSW of Tres Pinos, California · 14413 days ago · 3 km deep · 33 km away
  37. 2.07 km E of East Foothills, California · 14412 days ago · 6 km deep · 52 km away
  38. 2.723 km ENE of Soledad, California · 14412 days ago · 5 km deep · 66 km away
  39. 1.523 km NE of Greenfield, California · 14412 days ago · 10 km deep · 72 km away
  40. 1.73 km NW of Sunol, California · 14412 days ago · 3 km deep · 82 km away
  41. 1.519 km NE of East Foothills, California · 14411 days ago · 7 km deep · 67 km away
  42. 2.310 km ESE of East Foothills, California · 14411 days ago · 8 km deep · 49 km away
  43. 3.415 km SSE of Livermore, California · 14411 days ago · 4 km deep · 73 km away
  44. 2.610 km ESE of East Foothills, California · 14410 days ago · 7 km deep · 49 km away
  45. 2.113 km ENE of East Foothills, California · 14410 days ago · 7 km deep · 59 km away
  46. 1.713 km ENE of East Foothills, California · 14409 days ago · 7 km deep · 58 km away
  47. 1.724 km NE of Greenfield, California · 14409 days ago · 5 km deep · 72 km away
  48. 1.66 km NNE of Tres Pinos, California · 14408 days ago · 4 km deep · 31 km away
  49. 1.737 km NE of Greenfield, California · 14408 days ago · 13 km deep · 78 km away
  50. 2.417 km SSE of Livermore, California · 14408 days ago · 2 km deep · 71 km away
  51. 2.03 km ESE of Seven Trees, California · 14408 days ago · 7 km deep · 43 km away
  52. 1.925 km NE of King City, California · 14407 days ago · 1 km deep · 82 km away
  53. 3.02 km W of Hollister, California · 14407 days ago · 5 km deep · 19 km away
  54. 3.314 km N of Morgan Hill, California · 14407 days ago · 4 km deep · 39 km away
  55. 1.6Central California · 14406 days ago · 9 km deep · 63 km away
  56. 1.52 km WSW of Cambrian Park, California · 14405 days ago · 6 km deep · 47 km away
  57. 2.122 km ENE of Soledad, California · 14404 days ago · 8 km deep · 63 km away
  58. 1.610 km ESE of Seven Trees, California · 14404 days ago · 2 km deep · 38 km away
  59. 1.85 km ENE of Hollister, California · 14403 days ago · 7 km deep · 26 km away
  60. 2.36 km NNE of East Foothills, California · 14402 days ago · 5 km deep · 59 km away

The first 60 of 140.

Before

  1. 1.92 km NNE of Aromas, California · 14426 days ago · 6 km deep · 0 km away
  2. 2.014 km E of Seven Trees, California · 14427 days ago · 2 km deep · 43 km away
  3. 1.814 km E of Seven Trees, California · 14427 days ago · 2 km deep · 43 km away
  4. 1.614 km E of Seven Trees, California · 14427 days ago · 2 km deep · 43 km away
  5. 2.011 km S of Pescadero, California · 14427 days ago · 14 km deep · 70 km away
  6. 1.79 km ESE of Seven Trees, California · 14428 days ago · 5 km deep · 38 km away
  7. 1.624 km NE of Greenfield, California · 14428 days ago · 6 km deep · 72 km away
  8. 1.918 km NE of East Foothills, California · 14429 days ago · 6 km deep · 67 km away
  9. 2.124 km NE of Greenfield, California · 14429 days ago · 5 km deep · 72 km away
  10. 2.07 km NNE of East Foothills, California · 14429 days ago · 7 km deep · 62 km away
  11. 2.1Northern California · 14429 days ago · 5 km deep · 50 km away
  12. 1.513 km ENE of East Foothills, California · 14430 days ago · 8 km deep · 60 km away
  13. 1.66 km NE of Interlaken, California · 14431 days ago · 10 km deep · 10 km away
  14. 2.910 km NNW of Hollister, California · 14431 days ago · 2 km deep · 18 km away
  15. 1.820 km SSE of Tres Pinos, California · 14431 days ago · 5 km deep · 49 km away
  16. 2.417 km NE of East Foothills, California · 14431 days ago · 6 km deep · 66 km away
  17. 1.623 km NE of King City, California · 14431 days ago · 6 km deep · 84 km away
  18. 2.710 km SW of Ridgemark, California · 14432 days ago · 8 km deep · 24 km away
  19. 1.66 km ENE of Hollister, California · 14432 days ago · 6 km deep · 27 km away
  20. 1.820 km SSE of Tres Pinos, California · 14432 days ago · 5 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc97401. Read Tue, Sep 22, 2026, 4:24 PM UTC.