California earthquakes

M1.9 earthquake 1 km ESE of Aromas, California

A magnitude 1.9 earthquake struck 1 km ESE of Aromas, California on Wed, Jan 7, 1981, 3:45 AM PST (11:45 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.8 7 km E of East Foothills, 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
1.9 (md), micro
Local time
UTC
1981-01-07 11:45:56 UTC
Depth
7.7 km (4.8 mi), shallow
Epicenter
36.883° N, 121.622° 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
±0.17
Depth from
From location
Station coverage gap
54°
Stations used
55

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 183 in the 60 days after this one and 73 in the 30 days before it.

After

  1. 1.61 km ESE of Aromas, California · 16700 days ago · 8 km deep · 0 km away
  2. 1.712 km SE of Sunol, California · 16700 days ago · 5 km deep · 73 km away
  3. 3.04 km SE of Aromas, California · 16700 days ago · 8 km deep · 3 km away
  4. 1.75 km SE of Aromas, California · 16700 days ago · 6 km deep · 3 km away
  5. 1.68 km NW of Hollister, California · 16698 days ago · 7 km deep · 14 km away
  6. 2.424 km NE of Greenfield, California · 16698 days ago · 5 km deep · 69 km away
  7. 1.526 km ENE of Soledad, California · 16698 days ago · 9 km deep · 61 km away
  8. 1.813 km N of Morgan Hill, California · 16697 days ago · 3 km deep · 41 km away
  9. 1.524 km NE of Greenfield, California · 16697 days ago · 5 km deep · 71 km away
  10. 1.723 km NE of King City, California · 16697 days ago · 3 km deep · 87 km away
  11. 2.021 km NE of Soledad, California · 16697 days ago · 7 km deep · 54 km away
  12. 1.622 km NE of Soledad, California · 16697 days ago · 12 km deep · 56 km away
  13. 2.214 km ENE of Seven Trees, California · 16697 days ago · 7 km deep · 48 km away
  14. 2.419 km E of East Foothills, California · 16696 days ago · 6 km deep · 55 km away
  15. 2.512 km S of Tres Pinos, California · 16696 days ago · 5 km deep · 37 km away
  16. 2.18 km ENE of Gilroy, California · 16696 days ago · 9 km deep · 22 km away
  17. 1.916 km SE of Livermore, California · 16695 days ago · 6 km deep · 77 km away
  18. 1.618 km SSE of Tres Pinos, California · 16695 days ago · 4 km deep · 44 km away
  19. 2.67 km ENE of Gilroy, California · 16694 days ago · 7 km deep · 20 km away
  20. 1.75 km WNW of San Juan Bautista, California · 16693 days ago · 5 km deep · 4 km away
  21. 1.722 km NE of Soledad, California · 16693 days ago · 4 km deep · 51 km away
  22. 1.56 km WNW of Hollister, California · 16693 days ago · 6 km deep · 14 km away
  23. 4.87 km E of East Foothills, California · 16692 days ago · 9 km deep · 55 km away
  24. 3.06 km E of East Foothills, California · 16692 days ago · 7 km deep · 56 km away
  25. 1.910 km ESE of East Foothills, California · 16692 days ago · 7 km deep · 52 km away
  26. 1.710 km ESE of East Foothills, California · 16692 days ago · 7 km deep · 51 km away
  27. 2.17 km E of East Foothills, California · 16692 days ago · 8 km deep · 56 km away
  28. 1.610 km ESE of East Foothills, California · 16692 days ago · 7 km deep · 52 km away
  29. 2.411 km ESE of East Foothills, California · 16692 days ago · 7 km deep · 50 km away
  30. 2.211 km ESE of East Foothills, California · 16692 days ago · 7 km deep · 51 km away
  31. 1.59 km ESE of East Foothills, California · 16692 days ago · 8 km deep · 53 km away
  32. 2.48 km NW of Hollister, California · 16692 days ago · 9 km deep · 13 km away
  33. 1.511 km ESE of East Foothills, California · 16692 days ago · 7 km deep · 51 km away
  34. 1.710 km ESE of East Foothills, California · 16692 days ago · 7 km deep · 52 km away
  35. 1.610 km ESE of East Foothills, California · 16692 days ago · 7 km deep · 52 km away
  36. 2.224 km NE of San Lucas, California · 16692 days ago · 11 km deep · 98 km away
  37. 1.621 km NE of Soledad, California · 16690 days ago · 6 km deep · 56 km away
  38. 1.612 km ESE of East Foothills, California · 16690 days ago · 7 km deep · 50 km away
  39. 1.521 km NE of Soledad, California · 16690 days ago · 6 km deep · 55 km away
  40. 1.524 km NE of Greenfield, California · 16690 days ago · 6 km deep · 69 km away
  41. 1.923 km NE of San Lucas, California · 16689 days ago · 6 km deep · 93 km away
  42. 1.85 km SSW of Gilroy, California · 16688 days ago · 6 km deep · 9 km away
  43. 1.64 km NE of Tres Pinos, California · 16688 days ago · 9 km deep · 31 km away
  44. 2.53 km SSE of San Juan Bautista, California · 16687 days ago · 5 km deep · 12 km away
  45. 1.810 km ENE of Milpitas, California · 16687 days ago · 6 km deep · 68 km away
  46. 2.08 km NW of Hollister, California · 16687 days ago · 7 km deep · 14 km away
  47. 2.224 km NE of Greenfield, California · 16687 days ago · 6 km deep · 69 km away
  48. 1.925 km NE of Soledad, California · 16687 days ago · 8 km deep · 58 km away
  49. 1.624 km NE of Greenfield, California · 16687 days ago · 6 km deep · 69 km away
  50. 2.021 km SW of Diablo Grande, California · 16686 days ago · 34 km deep · 44 km away
  51. 1.68 km NE of Gilroy, California · 16686 days ago · 6 km deep · 22 km away
  52. 1.623 km NE of Soledad, California · 16685 days ago · 5 km deep · 55 km away
  53. 2.010 km NNE of Livermore, California · 16684 days ago · 12 km deep · 99 km away
  54. 1.812 km ESE of East Foothills, California · 16684 days ago · 4 km deep · 49 km away
  55. 1.59 km SSW of Tres Pinos, California · 16683 days ago · 3 km deep · 30 km away
  56. 1.66 km NNE of Interlaken, California · 16683 days ago · 7 km deep · 15 km away
  57. 1.92 km N of Monte Sereno, California · 16683 days ago · 4 km deep · 53 km away
  58. 1.624 km NE of King City, California · 16683 days ago · 0 km deep · 80 km away
  59. 1.54 km W of Gonzales, California · 16683 days ago · 7 km deep · 44 km away
  60. 2.014 km SSE of Livermore, California · 16682 days ago · 2 km deep · 76 km away

The first 60 of 183.

Before

  1. 4.52 km SE of Aromas, California · 16700 days ago · 9 km deep · 1 km away
  2. 1.94 km NE of San Lucas, California · 16701 days ago · 79 km deep · 99 km away
  3. 2.914 km SSE of Tres Pinos, California · 16701 days ago · 3 km deep · 39 km away
  4. 1.78 km SE of Lexington Hills, California · 16701 days ago · 13 km deep · 36 km away
  5. 2.012 km ESE of Big Sur, California · 16701 days ago · 12 km deep · 75 km away
  6. 1.56 km NE of East Foothills, California · 16702 days ago · 7 km deep · 60 km away
  7. 1.615 km SE of Livermore, California · 16702 days ago · 2 km deep · 76 km away
  8. 2.27 km SSE of San Juan Bautista, California · 16702 days ago · 10 km deep · 15 km away
  9. 1.615 km E of Seven Trees, California · 16704 days ago · 2 km deep · 45 km away
  10. 2.214 km ENE of Greenfield, California · 16704 days ago · 20 km deep · 73 km away
  11. 1.99 km NE of Gilroy, California · 16704 days ago · 9 km deep · 24 km away
  12. 2.59 km NNE of Livermore, California · 16706 days ago · 12 km deep · 98 km away
  13. 2.15 km NE of East Foothills, California · 16706 days ago · 7 km deep · 60 km away
  14. 1.818 km ENE of East Foothills, California · 16706 days ago · 8 km deep · 64 km away
  15. 1.5Northern California · 16706 days ago · 7 km deep · 48 km away
  16. 2.12 km NW of Emerald Lake Hills, California · 16707 days ago · 3 km deep · 89 km away
  17. 1.918 km S of Tracy, California · 16710 days ago · 0 km deep · 78 km away
  18. 2.010 km NNW of Hollister, California · 16711 days ago · 1 km deep · 17 km away
  19. 2.325 km ENE of Greenfield, California · 16712 days ago · 1 km deep · 76 km away
  20. 1.627 km NNE of King City, California · 16712 days ago · -1 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1058967. Read Mon, Sep 28, 2026, 5:31 PM UTC.