California earthquakes

M1.7 earthquake 4 km S of Gilroy, California

A magnitude 1.7 earthquake struck 4 km S of Gilroy, California on Tue, Jul 23, 2002, 5:07 PM PDT (00:07 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.9 15 km SSE of Tres Pinos, California. This one was a foreshock.

Gilroy 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
2002-07-24 00:07:14 UTC
Depth
-0.1 km (-0.0 mi), shallow
Epicenter
36.968° N, 121.560° 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 0.5 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
63°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 131 in the 60 days after this one and 82 in the 30 days before it.

After

  1. 2.04 km SSW of Gilroy, California · 8839 days ago · 7 km deep · 3 km away
  2. 1.921 km NNE of Soledad, California · 8839 days ago · 7 km deep · 53 km away
  3. 1.623 km ENE of Soledad, California · 8838 days ago · 4 km deep · 67 km away
  4. 1.52 km NE of San Ramon, California · 8838 days ago · 7 km deep · 98 km away
  5. 1.72 km NE of San Ramon, California · 8837 days ago · 8 km deep · 98 km away
  6. 1.93 km ESE of Tres Pinos, California · 8837 days ago · 9 km deep · 32 km away
  7. 1.63 km NNW of Hollister, California · 8837 days ago · 8 km deep · 16 km away
  8. 1.72 km W of Ridgemark, California · 8837 days ago · 6 km deep · 23 km away
  9. 1.77 km E of East Foothills, California · 8837 days ago · 5 km deep · 47 km away
  10. 1.81 km NE of San Ramon, California · 8836 days ago · 7 km deep · 98 km away
  11. 1.91 km NE of San Ramon, California · 8836 days ago · 7 km deep · 98 km away
  12. 1.71 km NE of San Ramon, California · 8836 days ago · 7 km deep · 98 km away
  13. 1.92 km NE of San Ramon, California · 8836 days ago · 7 km deep · 98 km away
  14. 1.72 km NE of San Ramon, California · 8836 days ago · 8 km deep · 98 km away
  15. 1.72 km NE of San Ramon, California · 8836 days ago · 7 km deep · 98 km away
  16. 1.62 km NE of San Ramon, California · 8836 days ago · 7 km deep · 98 km away
  17. 1.5Northern California · 8836 days ago · 6 km deep · 98 km away
  18. 2.22 km E of Aromas, California · 8836 days ago · 7 km deep · 11 km away
  19. 1.79 km ESE of Livermore, California · 8835 days ago · 1 km deep · 76 km away
  20. 1.57 km NE of San Juan Bautista, California · 8835 days ago · 9 km deep · 10 km away
  21. 1.65 km ESE of San Ramon, California · 8834 days ago · 7 km deep · 94 km away
  22. 1.73 km NNE of Day Valley, California · 8834 days ago · 15 km deep · 27 km away
  23. 1.923 km NE of Soledad, California · 8834 days ago · 9 km deep · 60 km away
  24. 2.021 km NE of Soledad, California · 8834 days ago · 3 km deep · 57 km away
  25. 1.71 km E of Aromas, California · 8834 days ago · 8 km deep · 11 km away
  26. 2.71 km ESE of Aromas, California · 8832 days ago · 8 km deep · 11 km away
  27. 1.812 km S of Tres Pinos, California · 8832 days ago · 2 km deep · 39 km away
  28. 1.67 km E of East Foothills, California · 8832 days ago · 6 km deep · 47 km away
  29. 1.54 km WSW of Highlands-Baywood Park, California · 8832 days ago · 2 km deep · 95 km away
  30. 1.624 km NE of Soledad, California · 8831 days ago · 8 km deep · 59 km away
  31. 1.92 km ESE of Aromas, California · 8831 days ago · 8 km deep · 11 km away
  32. 2.024 km ENE of Greenfield, California · 8831 days ago · 5 km deep · 80 km away
  33. 1.523 km NE of Soledad, California · 8830 days ago · 9 km deep · 59 km away
  34. 1.622 km NNE of Soledad, California · 8830 days ago · 1 km deep · 52 km away
  35. 2.06 km NNE of Milpitas, California · 8830 days ago · 0 km deep · 63 km away
  36. 1.528 km SE of Big Sur, California · 8829 days ago · 8 km deep · 100 km away
  37. 2.13 km SSE of San Juan Bautista, California · 8829 days ago · 4 km deep · 17 km away
  38. 2.42 km SW of San Juan Bautista, California · 8827 days ago · 7 km deep · 15 km away
  39. 1.615 km E of Seven Trees, California · 8826 days ago · 2 km deep · 37 km away
  40. 1.74 km S of Diablo Grande, California · 8826 days ago · 7 km deep · 50 km away
  41. 1.97 km E of East Foothills, California · 8825 days ago · 7 km deep · 47 km away
  42. 1.624 km ENE of Soledad, California · 8825 days ago · 3 km deep · 69 km away
  43. 1.93 km N of East Foothills, California · 8824 days ago · 1 km deep · 54 km away
  44. 1.633 km W of Three Rocks, California · 8824 days ago · 8 km deep · 86 km away
  45. 2.422 km NE of Soledad, California · 8824 days ago · 6 km deep · 54 km away
  46. 2.213 km S of Tres Pinos, California · 8822 days ago · 3 km deep · 41 km away
  47. 1.817 km SSE of Tres Pinos, California · 8821 days ago · 4 km deep · 46 km away
  48. 1.822 km NE of Soledad, California · 8821 days ago · 3 km deep · 54 km away
  49. 1.85 km NNE of Milpitas, California · 8819 days ago · 0 km deep · 62 km away
  50. 2.922 km NE of Soledad, California · 8818 days ago · 4 km deep · 54 km away
  51. 2.023 km NE of King City, California · 8817 days ago · 6 km deep · 84 km away
  52. 1.511 km SSE of Livermore, California · 8816 days ago · 6 km deep · 71 km away
  53. 1.63 km ESE of Tres Pinos, California · 8816 days ago · 9 km deep · 32 km away
  54. 1.62 km SW of San Juan Bautista, California · 8815 days ago · 8 km deep · 15 km away
  55. 2.318 km WSW of Volta, California · 8815 days ago · 3 km deep · 40 km away
  56. 1.86 km SW of Tres Pinos, California · 8815 days ago · 6 km deep · 31 km away
  57. 1.610 km S of Tres Pinos, California · 8812 days ago · 12 km deep · 38 km away
  58. 1.812 km ESE of East Foothills, California · 8812 days ago · 5 km deep · 41 km away
  59. 1.75 km SW of Gilroy, California · 8812 days ago · 4 km deep · 5 km away
  60. 2.4Central California · 8811 days ago · 6 km deep · 12 km away

The first 60 of 131.

Before

  1. 1.77 km NE of San Juan Bautista, California · 8840 days ago · 9 km deep · 10 km away
  2. 2.05 km NNE of Milpitas, California · 8840 days ago · 0 km deep · 62 km away
  3. 2.40 km ENE of Gonzales, California · 8841 days ago · 11 km deep · 52 km away
  4. 1.98 km SE of San Juan Bautista, California · 8841 days ago · 3 km deep · 21 km away
  5. 1.612 km SSE of Tres Pinos, California · 8841 days ago · 7 km deep · 40 km away
  6. 1.66 km WSW of Gilroy, California · 8841 days ago · 5 km deep · 8 km away
  7. 2.93 km N of East Foothills, California · 8842 days ago · 0 km deep · 54 km away
  8. 2.73 km N of East Foothills, California · 8842 days ago · 2 km deep · 55 km away
  9. 2.58 km ENE of San Martin, California · 8842 days ago · 8 km deep · 18 km away
  10. 1.721 km NE of Soledad, California · 8842 days ago · 5 km deep · 61 km away
  11. 1.87 km ENE of Gilroy, California · 8843 days ago · 7 km deep · 10 km away
  12. 1.623 km W of Three Rocks, California · 8843 days ago · 9 km deep · 99 km away
  13. 2.43 km N of East Foothills, California · 8843 days ago · 0 km deep · 54 km away
  14. 2.73 km N of East Foothills, California · 8843 days ago · 2 km deep · 55 km away
  15. 1.616 km N of Morgan Hill, California · 8843 days ago · 6 km deep · 35 km away
  16. 2.121 km SE of Big Sur, California · 8843 days ago · 2 km deep · 94 km away
  17. 1.85 km SSW of Gilroy, California · 8844 days ago · 4 km deep · 3 km away
  18. 1.822 km WSW of Three Rocks, California · 8844 days ago · 15 km deep · 100 km away
  19. 1.64 km ENE of La Honda, California · 8845 days ago · 0 km deep · 72 km away
  20. 1.810 km WSW of Ridgemark, California · 8845 days ago · 6 km deep · 24 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc21237103. Read Mon, Oct 5, 2026, 9:25 AM UTC.