California earthquakes

M1.7 earthquake 2 km NNE of Aromas, California

A magnitude 1.7 earthquake struck 2 km NNE of Aromas, California on Wed, Aug 21, 2002, 3:17 PM PDT (22:17 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.8 21 km NNE of Soledad, 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
1.7 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2002-08-21 22:17:53 UTC
Depth
6.7 km (4.2 mi), shallow
Epicenter
36.907° N, 121.634° 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
±0.16
Depth from
From location
Station coverage gap
35°
Stations used
35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 145 in the 60 days after this one and 53 in the 30 days before it.

After

  1. 2.48 km N of East Foothills, California · 8810 days ago · 6 km deep · 63 km away
  2. 2.322 km ENE of Soledad, California · 8810 days ago · 4 km deep · 64 km away
  3. 1.811 km ESE of East Foothills, California · 8810 days ago · 6 km deep · 48 km away
  4. 1.68 km ENE of Morgan Hill, California · 8810 days ago · 3 km deep · 30 km away
  5. 1.76 km NNE of Tres Pinos, California · 8809 days ago · 6 km deep · 32 km away
  6. 1.96 km NNE of Milpitas, California · 8809 days ago · 1 km deep · 67 km away
  7. 2.514 km ESE of Livermore, California · 8808 days ago · 0 km deep · 80 km away
  8. 1.614 km ESE of Livermore, California · 8808 days ago · 0 km deep · 80 km away
  9. 2.321 km NE of Soledad, California · 8807 days ago · 5 km deep · 60 km away
  10. 2.11 km SW of Campbell, California · 8807 days ago · 7 km deep · 50 km away
  11. 2.621 km SSE of Tres Pinos, California · 8805 days ago · 6 km deep · 50 km away
  12. 2.92 km N of Castro Valley, California · 8805 days ago · 10 km deep · 98 km away
  13. 2.92 km N of Castro Valley, California · 8805 days ago · 10 km deep · 98 km away
  14. 1.618 km SSE of Tres Pinos, California · 8805 days ago · 3 km deep · 46 km away
  15. 2.210 km SSW of Tracy, California · 8804 days ago · 15 km deep · 84 km away
  16. 1.521 km SE of Big Sur, California · 8802 days ago · 7 km deep · 85 km away
  17. 2.44 km ESE of Aromas, California · 8802 days ago · 6 km deep · 5 km away
  18. 2.04 km ESE of Aromas, California · 8802 days ago · 6 km deep · 6 km away
  19. 1.623 km ENE of Soledad, California · 8801 days ago · 6 km deep · 68 km away
  20. 2.39 km SSW of Tracy, California · 8801 days ago · 14 km deep · 85 km away
  21. 2.09 km SSW of Tracy, California · 8801 days ago · 14 km deep · 85 km away
  22. 2.38 km S of Tracy, California · 8800 days ago · 14 km deep · 86 km away
  23. 2.624 km ENE of Greenfield, California · 8800 days ago · 6 km deep · 78 km away
  24. 1.9Northern California · 8800 days ago · 15 km deep · 85 km away
  25. 2.58 km SSW of Tracy, California · 8799 days ago · 14 km deep · 86 km away
  26. 2.98 km SSW of Tracy, California · 8799 days ago · 14 km deep · 86 km away
  27. 2.32 km SSW of San Juan Bautista, California · 8798 days ago · 6 km deep · 12 km away
  28. 1.90 km SW of Dublin, California · 8797 days ago · 10 km deep · 92 km away
  29. 1.51 km SSE of San Ramon, California · 8797 days ago · 10 km deep · 100 km away
  30. 2.78 km SSW of Tracy, California · 8797 days ago · 14 km deep · 86 km away
  31. 1.64 km ESE of Big Sur, California · 8796 days ago · 15 km deep · 73 km away
  32. 1.836 km SE of Big Sur, California · 8796 days ago · 18 km deep · 97 km away
  33. 2.124 km NE of Greenfield, California · 8796 days ago · 5 km deep · 71 km away
  34. 1.624 km NE of Greenfield, California · 8796 days ago · 5 km deep · 72 km away
  35. 1.626 km NE of Soledad, California · 8796 days ago · 8 km deep · 62 km away
  36. 2.2Central California · 8795 days ago · 6 km deep · 40 km away
  37. 2.82 km SE of South Dos Palos, California · 8795 days ago · 10 km deep · 89 km away
  38. 2.48 km SSW of Tracy, California · 8795 days ago · 14 km deep · 86 km away
  39. 1.77 km SE of San Juan Bautista, California · 8794 days ago · 5 km deep · 19 km away
  40. 1.625 km NE of Soledad, California · 8794 days ago · 9 km deep · 59 km away
  41. 2.424 km NE of Soledad, California · 8793 days ago · 10 km deep · 62 km away
  42. 1.715 km SSE of Tres Pinos, California · 8793 days ago · 5 km deep · 43 km away
  43. 1.98 km NE of Milpitas, California · 8792 days ago · 14 km deep · 66 km away
  44. 2.28 km NE of San Juan Bautista, California · 8791 days ago · 5 km deep · 14 km away
  45. 2.16 km NNE of Milpitas, California · 8791 days ago · 1 km deep · 67 km away
  46. 2.125 km SSW of Los Banos, California · 8791 days ago · 0 km deep · 62 km away
  47. 2.57 km SSW of Tracy, California · 8790 days ago · 11 km deep · 87 km away
  48. 2.33 km NNE of Pleasanton, California · 8790 days ago · 15 km deep · 89 km away
  49. 1.89 km SSW of Tracy, California · 8790 days ago · 14 km deep · 85 km away
  50. 2.73 km NNE of Pleasanton, California · 8790 days ago · 14 km deep · 89 km away
  51. 2.321 km NNE of Soledad, California · 8789 days ago · 7 km deep · 52 km away
  52. 1.622 km NNE of Soledad, California · 8789 days ago · 1 km deep · 52 km away
  53. 1.610 km E of Big Sur, California · 8789 days ago · 5 km deep · 69 km away
  54. 1.825 km NE of King City, California · 8788 days ago · 2 km deep · 83 km away
  55. 1.613 km N of Morgan Hill, California · 8788 days ago · 3 km deep · 38 km away
  56. 1.73 km NNW of Boulder Creek, California · 8788 days ago · 15 km deep · 52 km away
  57. 2.010 km S of Tres Pinos, California · 8787 days ago · 7 km deep · 35 km away
  58. 1.622 km NE of Soledad, California · 8785 days ago · 7 km deep · 58 km away
  59. 2.44 km W of San Juan Bautista, California · 8785 days ago · 9 km deep · 7 km away
  60. 2.915 km SSE of Tres Pinos, California · 8785 days ago · 8 km deep · 42 km away

The first 60 of 145.

Before

  1. 2.4Central California · 8811 days ago · 6 km deep · 18 km away
  2. 1.75 km SW of Gilroy, California · 8812 days ago · 4 km deep · 7 km away
  3. 1.812 km ESE of East Foothills, California · 8812 days ago · 5 km deep · 46 km away
  4. 1.610 km S of Tres Pinos, California · 8812 days ago · 12 km deep · 37 km away
  5. 1.86 km SW of Tres Pinos, California · 8815 days ago · 6 km deep · 30 km away
  6. 2.318 km WSW of Volta, California · 8815 days ago · 3 km deep · 48 km away
  7. 1.62 km SW of San Juan Bautista, California · 8815 days ago · 8 km deep · 11 km away
  8. 1.63 km ESE of Tres Pinos, California · 8816 days ago · 9 km deep · 34 km away
  9. 1.511 km SSE of Livermore, California · 8816 days ago · 6 km deep · 77 km away
  10. 2.023 km NE of King City, California · 8817 days ago · 6 km deep · 83 km away
  11. 2.922 km NE of Soledad, California · 8818 days ago · 4 km deep · 54 km away
  12. 1.85 km NNE of Milpitas, California · 8819 days ago · 0 km deep · 66 km away
  13. 1.822 km NE of Soledad, California · 8821 days ago · 3 km deep · 54 km away
  14. 1.817 km SSE of Tres Pinos, California · 8821 days ago · 4 km deep · 45 km away
  15. 2.213 km S of Tres Pinos, California · 8822 days ago · 3 km deep · 40 km away
  16. 2.422 km NE of Soledad, California · 8824 days ago · 6 km deep · 53 km away
  17. 1.633 km W of Three Rocks, California · 8824 days ago · 8 km deep · 88 km away
  18. 1.93 km N of East Foothills, California · 8824 days ago · 1 km deep · 58 km away
  19. 1.624 km ENE of Soledad, California · 8825 days ago · 3 km deep · 68 km away
  20. 1.97 km E of East Foothills, California · 8825 days ago · 7 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc21241609. Read Mon, Oct 5, 2026, 11:58 AM UTC.