California earthquakes

M2.1 earthquake 4 km ESE of Aromas, California

A magnitude 2.1 earthquake struck 4 km ESE of Aromas, California on Mon, Apr 30, 1984, 12:09 PM PDT (19:09 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.2 15 km NNE of Morgan Hill, 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
1984-04-30 19:09:21 UTC
Depth
5.1 km (3.2 mi), shallow
Epicenter
36.871° N, 121.603° 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
±0.15
Depth from
From location
Station coverage gap
58°
Stations used
54

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 190 in the 60 days after this one and 188 in the 30 days before it.

After

  1. 1.714 km NW of Pacific Grove, California · 15492 days ago · 18 km deep · 45 km away
  2. 2.714 km N of Morgan Hill, California · 15492 days ago · 6 km deep · 43 km away
  3. 2.814 km N of Morgan Hill, California · 15492 days ago · 6 km deep · 43 km away
  4. 1.515 km N of Morgan Hill, California · 15492 days ago · 5 km deep · 45 km away
  5. 2.015 km E of Seven Trees, California · 15491 days ago · 5 km deep · 46 km away
  6. 3.216 km N of Morgan Hill, California · 15491 days ago · 3 km deep · 45 km away
  7. 1.78 km ENE of Morgan Hill, California · 15491 days ago · 4 km deep · 32 km away
  8. 1.512 km N of Morgan Hill, California · 15491 days ago · 7 km deep · 41 km away
  9. 1.711 km ESE of East Foothills, California · 15491 days ago · 7 km deep · 52 km away
  10. 1.75 km SSW of Gilroy, California · 15491 days ago · 6 km deep · 10 km away
  11. 3.111 km NNE of Morgan Hill, California · 15491 days ago · 5 km deep · 40 km away
  12. 1.914 km NE of East Foothills, California · 15491 days ago · 2 km deep · 67 km away
  13. 1.739 km SSW of South Dos Palos, California · 15491 days ago · 0 km deep · 69 km away
  14. 3.016 km N of Morgan Hill, California · 15491 days ago · 8 km deep · 45 km away
  15. 1.89 km N of Morgan Hill, California · 15491 days ago · 6 km deep · 39 km away
  16. 2.115 km E of Seven Trees, California · 15491 days ago · 6 km deep · 46 km away
  17. 1.613 km ESE of East Foothills, California · 15491 days ago · 2 km deep · 54 km away
  18. 1.815 km E of Seven Trees, California · 15491 days ago · 5 km deep · 47 km away
  19. 1.87 km SSE of San Juan Bautista, California · 15490 days ago · 7 km deep · 14 km away
  20. 1.68 km ENE of Morgan Hill, California · 15490 days ago · 3 km deep · 33 km away
  21. 1.814 km E of Seven Trees, California · 15490 days ago · 3 km deep · 47 km away
  22. 1.617 km N of Morgan Hill, California · 15490 days ago · 3 km deep · 46 km away
  23. 1.914 km N of Morgan Hill, California · 15490 days ago · 4 km deep · 43 km away
  24. 2.212 km N of Morgan Hill, California · 15490 days ago · 7 km deep · 41 km away
  25. 1.65 km E of Fremont, California · 15490 days ago · 9 km deep · 80 km away
  26. 1.815 km E of Seven Trees, California · 15490 days ago · 3 km deep · 46 km away
  27. 2.614 km N of Morgan Hill, California · 15490 days ago · 6 km deep · 44 km away
  28. 2.114 km E of Seven Trees, California · 15490 days ago · 6 km deep · 49 km away
  29. 2.113 km N of Morgan Hill, California · 15490 days ago · 4 km deep · 43 km away
  30. 3.216 km N of Morgan Hill, California · 15489 days ago · 8 km deep · 45 km away
  31. 4.216 km N of Morgan Hill, California · 15489 days ago · 9 km deep · 45 km away
  32. 2.212 km ESE of East Foothills, California · 15489 days ago · 6 km deep · 51 km away
  33. 1.69 km ENE of Morgan Hill, California · 15489 days ago · 5 km deep · 33 km away
  34. 2.4Northern California · 15489 days ago · 4 km deep · 34 km away
  35. 2.016 km E of Seven Trees, California · 15489 days ago · 4 km deep · 45 km away
  36. 1.516 km E of Seven Trees, California · 15489 days ago · 5 km deep · 45 km away
  37. 1.916 km E of Seven Trees, California · 15488 days ago · 8 km deep · 46 km away
  38. 1.73 km NNE of Pleasanton, California · 15488 days ago · 21 km deep · 94 km away
  39. 2.413 km NNW of Big Sur, California · 15488 days ago · 10 km deep · 60 km away
  40. 1.616 km E of Seven Trees, California · 15488 days ago · 8 km deep · 46 km away
  41. 3.415 km E of Seven Trees, California · 15488 days ago · 5 km deep · 46 km away
  42. 1.910 km NE of San Martin, California · 15488 days ago · 7 km deep · 33 km away
  43. 2.67 km NE of Gilroy, California · 15488 days ago · 3 km deep · 22 km away
  44. 1.714 km N of Morgan Hill, California · 15488 days ago · 6 km deep · 44 km away
  45. 2.07 km NE of Gilroy, California · 15488 days ago · 3 km deep · 22 km away
  46. 2.515 km E of Seven Trees, California · 15488 days ago · 5 km deep · 47 km away
  47. 2.1Northern California · 15488 days ago · 1 km deep · 47 km away
  48. 3.05 km ENE of San Martin, California · 15488 days ago · 3 km deep · 26 km away
  49. 2.019 km ESE of East Foothills, California · 15488 days ago · 2 km deep · 48 km away
  50. 1.98 km ENE of Morgan Hill, California · 15488 days ago · 2 km deep · 32 km away
  51. 2.115 km N of Morgan Hill, California · 15487 days ago · 5 km deep · 45 km away
  52. 2.021 km NE of Soledad, California · 15487 days ago · 3 km deep · 52 km away
  53. 2.114 km E of Seven Trees, California · 15487 days ago · 5 km deep · 48 km away
  54. 1.77 km NNE of San Martin, California · 15487 days ago · 3 km deep · 30 km away
  55. 1.88 km NE of San Martin, California · 15487 days ago · 5 km deep · 31 km away
  56. 2.011 km ESE of East Foothills, California · 15487 days ago · 4 km deep · 52 km away
  57. 2.01 km ESE of Monterey, California · 15487 days ago · 2 km deep · 39 km away
  58. 1.67 km NNE of San Martin, California · 15487 days ago · 4 km deep · 31 km away
  59. 1.58 km NE of San Martin, California · 15487 days ago · 7 km deep · 30 km away
  60. 2.813 km ESE of Alum Rock, California · 15486 days ago · 6 km deep · 50 km away

The first 60 of 190.

Before

  1. 1.715 km E of Seven Trees, California · 15492 days ago · 6 km deep · 47 km away
  2. 1.75 km ENE of Morgan Hill, California · 15493 days ago · 2 km deep · 31 km away
  3. 1.716 km N of Morgan Hill, California · 15493 days ago · 3 km deep · 46 km away
  4. 2.216 km E of Seven Trees, California · 15493 days ago · 8 km deep · 46 km away
  5. 1.814 km ENE of East Foothills, California · 15493 days ago · 5 km deep · 60 km away
  6. 3.08 km NNE of San Martin, California · 15493 days ago · 2 km deep · 31 km away
  7. 1.614 km ESE of East Foothills, California · 15493 days ago · 1 km deep · 53 km away
  8. 1.917 km N of Morgan Hill, California · 15493 days ago · 2 km deep · 46 km away
  9. 1.623 km ENE of Soledad, California · 15493 days ago · 5 km deep · 61 km away
  10. 2.1Northern California · 15493 days ago · 2 km deep · 31 km away
  11. 1.724 km NE of Greenfield, California · 15494 days ago · 4 km deep · 66 km away
  12. 1.612 km NNE of Morgan Hill, California · 15494 days ago · 6 km deep · 41 km away
  13. 1.77 km NNE of Morgan Hill, California · 15494 days ago · 3 km deep · 35 km away
  14. 1.812 km N of Morgan Hill, California · 15494 days ago · 6 km deep · 41 km away
  15. 2.316 km N of Morgan Hill, California · 15494 days ago · 2 km deep · 45 km away
  16. 2.012 km S of Tres Pinos, California · 15494 days ago · 3 km deep · 35 km away
  17. 1.514 km E of Seven Trees, California · 15494 days ago · 1 km deep · 48 km away
  18. 1.614 km E of Seven Trees, California · 15494 days ago · 2 km deep · 48 km away
  19. 2.315 km E of Seven Trees, California · 15494 days ago · 6 km deep · 47 km away
  20. 2.27 km NE of San Martin, California · 15494 days ago · 2 km deep · 30 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc17113. Read Tue, Sep 29, 2026, 10:57 PM UTC.