California earthquakes

M2.1 earthquake 4 km ESE of Aromas, California

A magnitude 2.1 earthquake struck 4 km ESE of Aromas, California on Sun, Mar 15, 1981, 9:08 PM PST (05:08 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M2.3 14 km E of Seven Trees, 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
2.1 (md), micro
Local time
UTC
1981-03-16 05:08:10 UTC
Depth
5.6 km (3.5 mi), shallow
Epicenter
36.868° N, 121.599° 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
±0.12
Depth from
From location
Station coverage gap
55°
Stations used
56

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 135 in the 60 days after this one and 38 in the 30 days before it.

After

  1. 2.314 km E of Seven Trees, California · 16625 days ago · 2 km deep · 48 km away
  2. 1.624 km ENE of Greenfield, California · 16625 days ago · 4 km deep · 70 km away
  3. 1.722 km ENE of Soledad, California · 16623 days ago · 4 km deep · 60 km away
  4. 1.614 km E of Seven Trees, California · 16623 days ago · 1 km deep · 48 km away
  5. 1.78 km ENE of Gilroy, California · 16622 days ago · 8 km deep · 22 km away
  6. 1.63 km NNE of Day Valley, California · 16622 days ago · 15 km deep · 31 km away
  7. 2.85 km NNE of Interlaken, California · 16622 days ago · 12 km deep · 17 km away
  8. 1.714 km SE of Tres Pinos, California · 16621 days ago · 4 km deep · 41 km away
  9. 1.69 km NE of Gilroy, California · 16621 days ago · 9 km deep · 24 km away
  10. 1.627 km ENE of Soledad, California · 16620 days ago · 8 km deep · 60 km away
  11. 2.115 km E of Seven Trees, California · 16620 days ago · 3 km deep · 47 km away
  12. 1.817 km SSE of Tres Pinos, California · 16620 days ago · 6 km deep · 41 km away
  13. 2.314 km E of Seven Trees, California · 16620 days ago · 4 km deep · 47 km away
  14. 2.37 km E of East Foothills, California · 16619 days ago · 8 km deep · 57 km away
  15. 1.521 km NE of Soledad, California · 16619 days ago · 6 km deep · 49 km away
  16. 2.025 km NE of Soledad, California · 16618 days ago · 10 km deep · 54 km away
  17. 1.69 km NE of San Martin, California · 16617 days ago · 7 km deep · 32 km away
  18. 1.58 km SSW of Tres Pinos, California · 16617 days ago · 4 km deep · 27 km away
  19. 2.08 km SSW of Tres Pinos, California · 16617 days ago · 4 km deep · 27 km away
  20. 2.07 km SSW of Tres Pinos, California · 16617 days ago · 3 km deep · 26 km away
  21. 1.58 km SSW of Tres Pinos, California · 16617 days ago · 4 km deep · 27 km away
  22. 3.114 km SSE of Livermore, California · 16617 days ago · 2 km deep · 78 km away
  23. 2.08 km SSW of Tres Pinos, California · 16617 days ago · 4 km deep · 27 km away
  24. 1.713 km N of Morgan Hill, California · 16616 days ago · 6 km deep · 43 km away
  25. 1.57 km SSW of Tres Pinos, California · 16616 days ago · 4 km deep · 26 km away
  26. 1.524 km NNE of King City, California · 16616 days ago · 7 km deep · 76 km away
  27. 2.09 km S of Tres Pinos, California · 16616 days ago · 3 km deep · 29 km away
  28. 1.614 km SSE of Livermore, California · 16616 days ago · 2 km deep · 78 km away
  29. 1.89 km NNE of San Juan Bautista, California · 16615 days ago · 4 km deep · 11 km away
  30. 1.732 km NE of San Lucas, California · 16615 days ago · 8 km deep · 96 km away
  31. 2.824 km NE of Greenfield, California · 16615 days ago · 6 km deep · 67 km away
  32. 2.42 km SSW of Hollister, California · 16614 days ago · 9 km deep · 17 km away
  33. 1.921 km NE of Soledad, California · 16614 days ago · 6 km deep · 56 km away
  34. 1.710 km E of San Martin, California · 16614 days ago · 9 km deep · 26 km away
  35. 1.515 km SSE of Livermore, California · 16614 days ago · 2 km deep · 77 km away
  36. 2.94 km SSW of Ridgemark, CA · 16614 days ago · 3 km deep · 21 km away
  37. 1.6Central California · 16613 days ago · 4 km deep · 80 km away
  38. 2.224 km ENE of Greenfield, California · 16612 days ago · 7 km deep · 74 km away
  39. 1.525 km NE of Greenfield, California · 16611 days ago · 6 km deep · 68 km away
  40. 2.112 km NNW of Hollister, California · 16611 days ago · 4 km deep · 16 km away
  41. 1.724 km NE of Greenfield, California · 16611 days ago · 6 km deep · 66 km away
  42. 1.70 km WNW of Hollister, California · 16610 days ago · 8 km deep · 17 km away
  43. 2.124 km NE of Greenfield, California · 16610 days ago · 6 km deep · 66 km away
  44. 2.07 km SSW of Tres Pinos, California · 16610 days ago · 3 km deep · 27 km away
  45. 1.63 km WSW of Hollister, California · 16609 days ago · 7 km deep · 14 km away
  46. 1.68 km NE of San Martin, California · 16609 days ago · 6 km deep · 30 km away
  47. 1.96 km S of Sunol, California · 16609 days ago · 9 km deep · 78 km away
  48. 2.110 km SSE of San Juan Bautista, California · 16609 days ago · 7 km deep · 15 km away
  49. 2.02 km WSW of San Juan Bautista, California · 16609 days ago · 7 km deep · 5 km away
  50. 1.65 km SSE of San Juan Bautista, California · 16608 days ago · 6 km deep · 10 km away
  51. 1.62 km NW of Bonny Doon, California · 16607 days ago · 12 km deep · 55 km away
  52. 1.616 km SSE of Livermore, California · 16606 days ago · -1 km deep · 77 km away
  53. 1.59 km NE of Gilroy, California · 16606 days ago · 8 km deep · 24 km away
  54. 1.923 km NNE of San Lucas, California · 16606 days ago · 9 km deep · 89 km away
  55. 1.624 km NNE of San Lucas, California · 16606 days ago · 9 km deep · 89 km away
  56. 1.816 km SSE of Tres Pinos, California · 16606 days ago · 4 km deep · 38 km away
  57. 1.74 km W of Westley, California · 16605 days ago · 8 km deep · 81 km away
  58. 1.58 km E of East Foothills, California · 16605 days ago · 8 km deep · 57 km away
  59. 1.53 km WSW of Campbell, California · 16605 days ago · 4 km deep · 57 km away
  60. 1.812 km S of Tres Pinos, California · 16604 days ago · 3 km deep · 33 km away

The first 60 of 135.

Before

  1. 1.723 km NNE of San Lucas, California · 16627 days ago · 8 km deep · 90 km away
  2. 1.824 km NE of Greenfield, California · 16628 days ago · 4 km deep · 70 km away
  3. 1.69 km ESE of East Foothills, California · 16628 days ago · 8 km deep · 55 km away
  4. 2.17 km NNE of Milpitas, California · 16628 days ago · 0 km deep · 74 km away
  5. 1.68 km ENE of Gilroy, California · 16628 days ago · 7 km deep · 22 km away
  6. 1.75 km E of Fremont, California · 16628 days ago · 9 km deep · 81 km away
  7. 1.813 km N of Morgan Hill, California · 16628 days ago · 6 km deep · 43 km away
  8. 1.75 km E of Fremont, California · 16629 days ago · 5 km deep · 81 km away
  9. 2.13 km ESE of Aromas, California · 16631 days ago · 6 km deep · 1 km away
  10. 2.21 km ENE of Aromas, California · 16631 days ago · 7 km deep · 4 km away
  11. 1.60 km ENE of Aromas, California · 16631 days ago · 6 km deep · 4 km away
  12. 1.61 km ENE of Aromas, California · 16631 days ago · 7 km deep · 4 km away
  13. 1.61 km ENE of Aromas, California · 16631 days ago · 7 km deep · 4 km away
  14. 3.31 km ENE of Aromas, California · 16631 days ago · 7 km deep · 4 km away
  15. 1.719 km SSE of Tres Pinos, California · 16632 days ago · 7 km deep · 41 km away
  16. 2.714 km E of Seven Trees, California · 16633 days ago · 7 km deep · 49 km away
  17. 1.73 km SW of Davenport, California · 16634 days ago · 7 km deep · 57 km away
  18. 3.22 km ESE of Aromas, California · 16634 days ago · 8 km deep · 2 km away
  19. 1.824 km NE of Greenfield, California · 16634 days ago · 7 km deep · 65 km away
  20. 2.522 km NE of Soledad, California · 16635 days ago · 4 km deep · 48 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1061382. Read Tue, Sep 22, 2026, 10:41 AM UTC.