California earthquakes

M1.6 earthquake 4 km NNW of Aromas, California

A magnitude 1.6 earthquake struck 4 km NNW of Aromas, California on Tue, May 21, 2002, 2:27 AM PDT (09:27 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.8 22 km NE 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
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2002-05-21 09:27:19 UTC
Depth
10.4 km (6.5 mi), shallow
Epicenter
36.927° N, 121.666° 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, 0.4 km in depth
Magnitude uncertainty
±0.21
Depth from
From location
Station coverage gap
51°
Stations used
44

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 167 in the 60 days after this one and 90 in the 30 days before it.

After

  1. 2.412 km S of Tres Pinos, California · 8903 days ago · 4 km deep · 42 km away
  2. 1.98 km ESE of East Foothills, California · 8903 days ago · 3 km deep · 47 km away
  3. 1.624 km NE of Greenfield, California · 8902 days ago · 5 km deep · 74 km away
  4. 3.14 km E of Interlaken, California · 8902 days ago · 6 km deep · 4 km away
  5. 1.712 km S of Tres Pinos, California · 8902 days ago · 5 km deep · 43 km away
  6. 1.5Central California · 8902 days ago · 0 km deep · 79 km away
  7. 1.813 km SW of Tres Pinos, California · 8901 days ago · 10 km deep · 35 km away
  8. 2.113 km WSW of Gonzales, California · 8901 days ago · 29 km deep · 54 km away
  9. 1.621 km NE of Soledad, California · 8901 days ago · 6 km deep · 60 km away
  10. 2.123 km NE of King City, California · 8901 days ago · 6 km deep · 89 km away
  11. 2.718 km SSE of Tres Pinos, California · 8900 days ago · 7 km deep · 51 km away
  12. 1.85 km NNE of Milpitas, California · 8900 days ago · 0 km deep · 63 km away
  13. 3.822 km NE of Soledad, California · 8900 days ago · 2 km deep · 64 km away
  14. 1.722 km NE of Soledad, California · 8899 days ago · 2 km deep · 64 km away
  15. 1.910 km S of Tres Pinos, California · 8899 days ago · 5 km deep · 39 km away
  16. 2.322 km NE of Soledad, California · 8898 days ago · 2 km deep · 63 km away
  17. 1.69 km NE of San Martin, California · 8897 days ago · 7 km deep · 28 km away
  18. 2.422 km NE of Soledad, California · 8897 days ago · 2 km deep · 63 km away
  19. 1.924 km NE of Soledad, California · 8896 days ago · 3 km deep · 64 km away
  20. 1.8Central California · 8896 days ago · 3 km deep · 80 km away
  21. 2.025 km ENE of Greenfield, California · 8895 days ago · 1 km deep · 80 km away
  22. 1.826 km ENE of Greenfield, California · 8895 days ago · 0 km deep · 81 km away
  23. 2.422 km NE of Soledad, California · 8895 days ago · 2 km deep · 63 km away
  24. 1.76 km SSE of San Juan Bautista, California · 8895 days ago · 8 km deep · 20 km away
  25. 1.525 km ENE of Greenfield, California · 8895 days ago · -1 km deep · 81 km away
  26. 2.19 km E of Gilroy, California · 8895 days ago · 5 km deep · 20 km away
  27. 1.57 km NE of Ridgemark, California · 8895 days ago · 5 km deep · 32 km away
  28. 2.45 km SSW of Gilroy, California · 8895 days ago · 6 km deep · 7 km away
  29. 2.422 km NNE of Soledad, California · 8895 days ago · 2 km deep · 54 km away
  30. 1.95 km SSW of Gilroy, California · 8895 days ago · 6 km deep · 7 km away
  31. 1.74 km SSE of Gilroy, California · 8895 days ago · 0 km deep · 11 km away
  32. 1.714 km SW of Tres Pinos, California · 8895 days ago · 8 km deep · 34 km away
  33. 2.223 km NE of San Lucas, California · 8894 days ago · 5 km deep · 99 km away
  34. 1.613 km SW of Tres Pinos, California · 8894 days ago · 10 km deep · 35 km away
  35. 2.48 km NE of Ridgemark, California · 8894 days ago · 5 km deep · 32 km away
  36. 2.95 km E of Interlaken, California · 8894 days ago · 6 km deep · 3 km away
  37. 2.222 km NE of Soledad, California · 8894 days ago · 1 km deep · 63 km away
  38. 2.47 km NE of Ridgemark, California · 8894 days ago · 5 km deep · 32 km away
  39. 1.629 km ESE of Tres Pinos, California · 8890 days ago · 0 km deep · 63 km away
  40. 2.020 km SSE of Tres Pinos, California · 8890 days ago · 5 km deep · 52 km away
  41. 1.727 km ESE of Tres Pinos, California · 8890 days ago · 4 km deep · 62 km away
  42. 2.017 km SSE of Tres Pinos, California · 8889 days ago · 4 km deep · 49 km away
  43. 1.729 km SSW of South Dos Palos, California · 8889 days ago · 0 km deep · 86 km away
  44. 1.723 km NE of Soledad, California · 8889 days ago · 2 km deep · 65 km away
  45. 1.85 km SW of Gilroy, California · 8888 days ago · 6 km deep · 7 km away
  46. 1.75 km WSW of Ridgemark, California · 8887 days ago · 5 km deep · 26 km away
  47. 1.85 km NNE of Milpitas, California · 8887 days ago · 0 km deep · 64 km away
  48. 1.63 km S of Fairview, California · 8886 days ago · 2 km deep · 87 km away
  49. 2.14 km S of Fairview, California · 8886 days ago · 1 km deep · 86 km away
  50. 1.624 km NE of Greenfield, California · 8886 days ago · 7 km deep · 73 km away
  51. 1.921 km NE of Soledad, California · 8886 days ago · 2 km deep · 64 km away
  52. 3.222 km NE of Soledad, California · 8886 days ago · 2 km deep · 63 km away
  53. 2.322 km NE of Soledad, California · 8885 days ago · 2 km deep · 64 km away
  54. 1.813 km S of Tres Pinos, California · 8885 days ago · 4 km deep · 44 km away
  55. 1.86 km SSW of Gilroy, California · 8885 days ago · 5 km deep · 7 km away
  56. 2.012 km S of Tres Pinos, California · 8884 days ago · 5 km deep · 43 km away
  57. 1.817 km W of Diablo Grande, California · 8884 days ago · 8 km deep · 53 km away
  58. 1.68 km SSE of Davenport, California · 8884 days ago · 7 km deep · 44 km away
  59. 2.46 km SSE of Gilroy, California · 8884 days ago · 4 km deep · 11 km away
  60. 2.32 km NNW of Aromas, California · 8883 days ago · 11 km deep · 2 km away

The first 60 of 167.

Before

  1. 1.817 km SSE of Tres Pinos, California · 8903 days ago · 4 km deep · 48 km away
  2. 2.611 km S of Tres Pinos, California · 8903 days ago · 4 km deep · 41 km away
  3. 3.312 km S of Tres Pinos, California · 8903 days ago · 5 km deep · 42 km away
  4. 1.55 km WNW of Newark, California · 8903 days ago · 4 km deep · 79 km away
  5. 2.134 km W of Three Rocks, California · 8904 days ago · 13 km deep · 95 km away
  6. 1.621 km NE of Soledad, California · 8905 days ago · 7 km deep · 58 km away
  7. 1.813 km S of Tres Pinos, California · 8907 days ago · 4 km deep · 44 km away
  8. 1.621 km NE of Soledad, California · 8907 days ago · 7 km deep · 62 km away
  9. 1.64 km SW of Gilroy, California · 8907 days ago · 5 km deep · 7 km away
  10. 1.65 km SW of Gilroy, California · 8907 days ago · 6 km deep · 7 km away
  11. 1.96 km NNE of Milpitas, California · 8909 days ago · 1 km deep · 65 km away
  12. 1.813 km S of Tres Pinos, California · 8909 days ago · 4 km deep · 44 km away
  13. 1.740 km W of Three Rocks, California · 8909 days ago · 17 km deep · 88 km away
  14. 1.95 km SSW of Gilroy, California · 8909 days ago · 6 km deep · 7 km away
  15. 2.010 km S of Tres Pinos, California · 8909 days ago · 9 km deep · 39 km away
  16. 1.75 km SSW of Gilroy, California · 8910 days ago · 6 km deep · 7 km away
  17. 1.719 km SSE of Tres Pinos, California · 8910 days ago · 7 km deep · 51 km away
  18. 1.85 km SSW of Gilroy, California · 8910 days ago · 11 km deep · 7 km away
  19. 1.75 km SW of Gilroy, California · 8910 days ago · 5 km deep · 7 km away
  20. 1.95 km SSW of Gilroy, California · 8910 days ago · 7 km deep · 8 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc21226607. Read Mon, Oct 5, 2026, 7:38 AM UTC.