California earthquakes

M1.7 earthquake 26km SSW of Ludlow, CA

A magnitude 1.7 earthquake struck 26km SSW of Ludlow, CA on Wed, Aug 21, 2002, 10:33 AM PDT (17:33 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M3.8 27km NW of Ludlow, CA. 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
1.7 (Mh), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2002-08-21 17:33:17 UTC
Depth
8.6 km (5.4 mi), shallow
Epicenter
34.498° N, 116.245° 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
Depth from
From location
Station coverage gap
51°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 174 in the 60 days after this one and 61 in the 30 days before it.

After

  1. 1.514km WSW of Ludlow, California · 8810 days ago · 7 km deep · 19 km away
  2. 1.94km SSE of Redlands, California · 8809 days ago · 7 km deep · 100 km away
  3. 1.830km S of Ludlow, CA · 8809 days ago · 7 km deep · 6 km away
  4. 2.026km SE of Barstow, California · 8809 days ago · 7 km deep · 58 km away
  5. 2.26km NNW of Big Bear City, CA · 8809 days ago · 3 km deep · 60 km away
  6. 1.715km NW of Ludlow, California · 8808 days ago · 8 km deep · 37 km away
  7. 1.813km NW of Ludlow, CA · 8807 days ago · 5 km deep · 34 km away
  8. 1.87km N of Big Bear City, CA · 8807 days ago · 3 km deep · 58 km away
  9. 1.64km SE of Garnet, CA · 8807 days ago · 3 km deep · 73 km away
  10. 1.937km N of Yucca Valley, CA · 8807 days ago · 8 km deep · 23 km away
  11. 1.916km WSW of Ludlow, CA · 8807 days ago · 10 km deep · 18 km away
  12. 1.86km E of Calimesa, CA · 8806 days ago · 18 km deep · 89 km away
  13. 1.815km N of Yucca Valley, CA · 8805 days ago · 2 km deep · 33 km away
  14. 1.728km N of Yucca Valley, CA · 8804 days ago · 7 km deep · 25 km away
  15. 2.126km N of Yucca Valley, CA · 8804 days ago · 3 km deep · 26 km away
  16. 1.625km SSW of Ludlow, California · 8804 days ago · 10 km deep · 1 km away
  17. 2.08km NNE of Beaumont, CA · 8804 days ago · 9 km deep · 86 km away
  18. 2.28km NNE of Beaumont, CA · 8803 days ago · 9 km deep · 86 km away
  19. 1.536km NNW of Yucca Valley, California · 8803 days ago · 3 km deep · 26 km away
  20. 1.66km N of Yucca Valley, CA · 8802 days ago · 9 km deep · 41 km away
  21. 1.76km NW of Big Bear City, CA · 8801 days ago · 6 km deep · 63 km away
  22. 1.86km NW of Big Bear City, CA · 8801 days ago · 6 km deep · 63 km away
  23. 1.515km N of Yucca Valley, CA · 8800 days ago · 4 km deep · 33 km away
  24. 1.715km NW of Ludlow, California · 8800 days ago · 5 km deep · 35 km away
  25. 1.630km SE of Fort Irwin, California · 8800 days ago · 2 km deep · 65 km away
  26. 2.431km SSE of Fort Irwin, CA · 8800 days ago · 1 km deep · 64 km away
  27. 2.530km N of Yucca Valley, CA · 8799 days ago · 3 km deep · 24 km away
  28. 1.85km E of Calimesa, CA · 8797 days ago · 13 km deep · 89 km away
  29. 2.04km ESE of Big Bear City, CA · 8796 days ago · 1 km deep · 58 km away
  30. 1.714km NE of Yucaipa, CA · 8796 days ago · 2 km deep · 76 km away
  31. 2.027km N of Yucca Valley, CA · 8796 days ago · 7 km deep · 24 km away
  32. 1.615km WSW of Ludlow, California · 8795 days ago · 6 km deep · 17 km away
  33. 2.726km N of Yucca Valley, CA · 8795 days ago · 7 km deep · 26 km away
  34. 1.726km N of Yucca Valley, CA · 8795 days ago · 8 km deep · 26 km away
  35. 1.625km N of Yucca Valley, California · 8795 days ago · 6 km deep · 27 km away
  36. 1.727km N of Yucca Valley, California · 8795 days ago · 4 km deep · 26 km away
  37. 2.432km N of Yucca Valley, CA · 8795 days ago · 2 km deep · 22 km away
  38. 2.013km NW of Ludlow, CA · 8794 days ago · 5 km deep · 34 km away
  39. 1.711km NNE of Cabazon, CA · 8794 days ago · 12 km deep · 71 km away
  40. 2.833km N of Yucca Valley, CA · 8793 days ago · 2 km deep · 23 km away
  41. 1.714km NW of Ludlow, California · 8793 days ago · 7 km deep · 36 km away
  42. 1.526km SSW of Ludlow, CA · 8793 days ago · 9 km deep · 1 km away
  43. 2.229km N of Yucca Valley, CA · 8792 days ago · 2 km deep · 24 km away
  44. 1.913km NW of Ludlow, CA · 8792 days ago · 5 km deep · 33 km away
  45. 1.631km S of Ludlow, CA · 8791 days ago · 5 km deep · 8 km away
  46. 2.413km NW of Ludlow, California · 8791 days ago · 5 km deep · 34 km away
  47. 1.612km SSE of Big Bear City, CA · 8791 days ago · 3 km deep · 65 km away
  48. 1.88km S of Joshua Tree, CA · 8791 days ago · 10 km deep · 49 km away
  49. 1.76km NE of Cabazon, CA · 8791 days ago · 15 km deep · 76 km away
  50. 1.712km SSE of Big Bear City, CA · 8791 days ago · 3 km deep · 65 km away
  51. 2.718km SW of Ludlow, CA · 8790 days ago · 3 km deep · 10 km away
  52. 1.55km S of Idyllwild, CA · 8790 days ago · 15 km deep · 100 km away
  53. 2.011km NNW of Banning, CA · 8790 days ago · 17 km deep · 82 km away
  54. 1.618km N of Yucca Valley, CA · 8790 days ago · 8 km deep · 31 km away
  55. 2.423km SSW of Ludlow, CA · 8789 days ago · 3 km deep · 3 km away
  56. 2.011km SSE of Big Bear City, CA · 8789 days ago · 3 km deep · 64 km away
  57. 1.68km NNE of Beaumont, CA · 8788 days ago · 19 km deep · 85 km away
  58. 2.110km N of Yucca Valley, CA · 8788 days ago · 12 km deep · 37 km away
  59. 1.713km NW of Ludlow, California · 8788 days ago · 6 km deep · 34 km away
  60. 1.530km NNW of Twentynine Palms, California · 8787 days ago · 7 km deep · 13 km away

The first 60 of 174.

Before

  1. 2.013km W of Ludlow, CA · 8811 days ago · 9 km deep · 24 km away
  2. 2.222km N of Yucca Valley, CA · 8811 days ago · 1 km deep · 28 km away
  3. 1.614km NNW of Joshua Tree, CA · 8812 days ago · 3 km deep · 31 km away
  4. 2.029km SSW of Ludlow, CA · 8812 days ago · 8 km deep · 4 km away
  5. 1.723km N of Yucca Valley, CA · 8813 days ago · 7 km deep · 27 km away
  6. 1.624km SSW of Ludlow, CA · 8815 days ago · 8 km deep · 5 km away
  7. 1.55km SSE of Banning, CA · 8816 days ago · 13 km deep · 88 km away
  8. 1.935km NE of Lucerne Valley, CA · 8817 days ago · 4 km deep · 41 km away
  9. 1.819km W of Ludlow, California · 8817 days ago · 7 km deep · 26 km away
  10. 1.64km ENE of Beaumont, CA · 8817 days ago · 17 km deep · 89 km away
  11. 1.713km NW of Ludlow, CA · 8817 days ago · 5 km deep · 34 km away
  12. 1.520km SSW of Ludlow, California · 8817 days ago · 5 km deep · 7 km away
  13. 1.618km SSW of Ludlow, California · 8818 days ago · 3 km deep · 9 km away
  14. 1.55km SSW of Idyllwild, CA · 8820 days ago · 18 km deep · 100 km away
  15. 1.728km N of Yucca Valley, CA · 8820 days ago · 7 km deep · 25 km away
  16. 1.712km ENE of Big Bear City, CA · 8821 days ago · 11 km deep · 50 km away
  17. 1.627km N of Yucca Valley, CA · 8821 days ago · 8 km deep · 26 km away
  18. 2.15km SSW of Idyllwild, CA · 8821 days ago · 16 km deep · 100 km away
  19. 1.513km W of Ludlow, CA · 8822 days ago · 5 km deep · 26 km away
  20. 1.932km NNW of Twentynine Palms, CA · 8823 days ago · 6 km deep · 12 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci9812781. Read Mon, Oct 5, 2026, 2:26 AM UTC.