California earthquakes

M1.5 earthquake 5 km ESE of Aromas, California

A magnitude 1.5 earthquake struck 5 km ESE of Aromas, California on Mon, Sep 7, 1981, 9:28 AM PDT (16:28 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M2.4 24 km NE of Greenfield, 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
1.5 (md), micro
Local time
UTC
1981-09-07 16:28:06 UTC
Depth
7.0 km (4.3 mi), shallow
Epicenter
36.864° N, 121.594° 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
±0.23
Depth from
From location
Station coverage gap
51°
Stations used
36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 152 in the 60 days after this one and 21 in the 30 days before it.

After

  1. 2.424 km NE of Greenfield, California · 16451 days ago · 0 km deep · 67 km away
  2. 1.524 km NE of Greenfield, California · 16451 days ago · 1 km deep · 68 km away
  3. 3.121 km NE of Soledad, California · 16451 days ago · 5 km deep · 55 km away
  4. 2.19 km ENE of Morgan Hill, California · 16451 days ago · 6 km deep · 33 km away
  5. 1.62 km SSW of San Juan Bautista, California · 16450 days ago · 6 km deep · 6 km away
  6. 3.26 km S of San Juan Bautista, California · 16450 days ago · 11 km deep · 10 km away
  7. 2.96 km S of San Juan Bautista, California · 16450 days ago · 10 km deep · 10 km away
  8. 2.128 km SW of South Dos Palos, CA · 16448 days ago · 4 km deep · 64 km away
  9. 2.737 km W of Three Rocks, California · 16448 days ago · 7 km deep · 78 km away
  10. 2.338 km W of Three Rocks, California · 16448 days ago · 0 km deep · 78 km away
  11. 1.638 km W of Three Rocks, California · 16448 days ago · 5 km deep · 78 km away
  12. 2.237 km W of Three Rocks, California · 16448 days ago · 6 km deep · 78 km away
  13. 2.7Central California · 16448 days ago · 11 km deep · 90 km away
  14. 1.530 km E of Tres Pinos, California · 16447 days ago · 5 km deep · 56 km away
  15. 1.61 km WSW of Belmont, California · 16447 days ago · 3 km deep · 95 km away
  16. 1.737 km W of Three Rocks, California · 16447 days ago · 3 km deep · 78 km away
  17. 3.09 km NE of San Martin, California · 16447 days ago · 8 km deep · 32 km away
  18. 1.77 km ESE of Prunedale, California · 16446 days ago · 8 km deep · 12 km away
  19. 2.67 km W of Gilroy, California · 16446 days ago · 4 km deep · 16 km away
  20. 3.313 km S of Tres Pinos, California · 16445 days ago · 4 km deep · 34 km away
  21. 2.113 km S of Tres Pinos, California · 16445 days ago · 3 km deep · 34 km away
  22. 1.65 km SW of Ridgemark, California · 16444 days ago · 9 km deep · 20 km away
  23. 2.011 km SSW of Loyola, California · 16444 days ago · 9 km deep · 67 km away
  24. 1.615 km N of Morgan Hill, California · 16443 days ago · 6 km deep · 45 km away
  25. 1.615 km N of Morgan Hill, California · 16443 days ago · 6 km deep · 45 km away
  26. 2.54 km SW of Tres Pinos, California · 16442 days ago · 9 km deep · 24 km away
  27. 1.69 km SSW of Tres Pinos, California · 16442 days ago · 2 km deep · 28 km away
  28. 1.638 km W of Three Rocks, California · 16441 days ago · 4 km deep · 78 km away
  29. 1.714 km E of Seven Trees, California · 16441 days ago · 4 km deep · 48 km away
  30. 1.511 km SSE of Tres Pinos, California · 16441 days ago · 16 km deep · 33 km away
  31. 1.925 km SE of Big Sur, California · 16440 days ago · 9 km deep · 83 km away
  32. 2.424 km ENE of Soledad, California · 16438 days ago · 3 km deep · 62 km away
  33. 1.521 km ENE of East Foothills, California · 16438 days ago · 6 km deep · 68 km away
  34. 2.19 km ESE of East Foothills, California · 16438 days ago · 5 km deep · 56 km away
  35. 3.313 km SSE of Tres Pinos, California · 16438 days ago · 3 km deep · 35 km away
  36. 2.121 km NE of Soledad, California · 16438 days ago · 4 km deep · 51 km away
  37. 1.926 km SE of Big Sur, California · 16437 days ago · 5 km deep · 83 km away
  38. 2.03 km SW of Davenport, California · 16437 days ago · 11 km deep · 57 km away
  39. 2.44 km SW of Tres Pinos, California · 16436 days ago · 9 km deep · 24 km away
  40. 1.82 km NNE of Woodside, California · 16436 days ago · 5 km deep · 87 km away
  41. 1.82 km E of Tres Pinos, California · 16436 days ago · 8 km deep · 28 km away
  42. 1.720 km W of Volta, California · 16435 days ago · 0 km deep · 46 km away
  43. 2.330 km ENE of Soledad, California · 16435 days ago · 7 km deep · 60 km away
  44. 1.923 km ENE of Soledad, California · 16435 days ago · 3 km deep · 62 km away
  45. 3.23 km S of San Juan Bautista, California · 16435 days ago · 8 km deep · 7 km away
  46. 3.13 km S of San Juan Bautista, California · 16434 days ago · 7 km deep · 8 km away
  47. 1.64 km S of San Juan Bautista, California · 16434 days ago · 7 km deep · 8 km away
  48. 2.123 km NE of San Lucas, California · 16433 days ago · 7 km deep · 97 km away
  49. 1.84 km SW of Tres Pinos, California · 16433 days ago · 8 km deep · 24 km away
  50. 1.85 km E of Fremont, California · 16432 days ago · 9 km deep · 81 km away
  51. 2.118 km SSE of Tres Pinos, California · 16432 days ago · 5 km deep · 40 km away
  52. 1.75 km SSW of Gilroy, California · 16432 days ago · 4 km deep · 11 km away
  53. 2.39 km ESE of East Foothills, California · 16432 days ago · 8 km deep · 55 km away
  54. 2.49 km NE of Gilroy, California · 16432 days ago · 9 km deep · 24 km away
  55. 1.927 km ENE of King City, California · 16432 days ago · 9 km deep · 86 km away
  56. 2.123 km NE of Soledad, California · 16432 days ago · 9 km deep · 53 km away
  57. 3.131 km NE of Soledad, California · 16431 days ago · 8 km deep · 57 km away
  58. 1.67 km SSE of Gilroy, California · 16431 days ago · 5 km deep · 10 km away
  59. 4.03 km S of San Juan Bautista, California · 16431 days ago · 9 km deep · 7 km away
  60. 1.812 km ESE of Tres Pinos, California · 16431 days ago · 10 km deep · 38 km away

The first 60 of 152.

Before

  1. 1.524 km ENE of Soledad, California · 16451 days ago · 4 km deep · 62 km away
  2. 2.324 km NE of Greenfield, California · 16452 days ago · 6 km deep · 66 km away
  3. 1.611 km SSW of Loyola, California · 16452 days ago · 10 km deep · 66 km away
  4. 1.89 km E of San Martin, California · 16452 days ago · 9 km deep · 25 km away
  5. 1.65 km SSW of Tres Pinos, California · 16454 days ago · 9 km deep · 26 km away
  6. 1.929 km W of Three Rocks, California · 16454 days ago · 7 km deep · 86 km away
  7. 2.221 km NE of Soledad, California · 16454 days ago · 8 km deep · 55 km away
  8. 2.535 km ENE of Soledad, California · 16455 days ago · 5 km deep · 67 km away
  9. 1.611 km ENE of Milpitas, California · 16456 days ago · 4 km deep · 71 km away
  10. 1.518 km ESE of East Foothills, California · 16456 days ago · 1 km deep · 50 km away
  11. 2.724 km ENE of Soledad, California · 16456 days ago · 3 km deep · 62 km away
  12. 1.99 km SSW of Tres Pinos, California · 16456 days ago · 2 km deep · 28 km away
  13. 1.65 km E of Fremont, California · 16457 days ago · 10 km deep · 82 km away
  14. 1.74 km N of Milpitas, California · 16457 days ago · 3 km deep · 73 km away
  15. 2.06 km S of Sunol, California · 16457 days ago · 9 km deep · 79 km away
  16. 1.65 km E of Fremont, California · 16458 days ago · 9 km deep · 81 km away
  17. 1.84 km W of Gonzales, California · 16458 days ago · 10 km deep · 41 km away
  18. 2.011 km S of Tres Pinos, California · 16459 days ago · 4 km deep · 32 km away
  19. 2.424 km NE of Greenfield, California · 16459 days ago · 2 km deep · 63 km away
  20. 1.89 km ENE of Gilroy, California · 16460 days ago · 9 km deep · 22 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1067430. Read Wed, Sep 23, 2026, 3:40 AM UTC.