California earthquakes

M1.9 earthquake 21km W of Ludlow, CA

A magnitude 1.9 earthquake struck 21km W of Ludlow, CA on Sun, Jul 16, 1978, 4:31 AM PDT (11:31 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.8 35km S of Tecopa, CA. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.9 (Mc), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1978-07-16 11:31:28 UTC
Depth
4.5 km (2.8 mi), shallow
Epicenter
34.714° N, 116.394° 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 0.7 km horizontally, 2.6 km in depth
Depth from
From location
Station coverage gap
186°, poorly surrounded by stations
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 95 in the 60 days after this one and 41 in the 30 days before it.

After

  1. 1.71km N of Cabazon, CA · 17610 days ago · 10 km deep · 95 km away
  2. 1.612km ENE of Cabazon, CA · 17609 days ago · 13 km deep · 88 km away
  3. 3.835km S of Tecopa, CA · 17609 days ago · 13 km deep · 92 km away
  4. 1.79km ENE of Desert Hot Springs, CA · 17608 days ago · 10 km deep · 79 km away
  5. 1.910km NE of Big Bear City, CA · 17608 days ago · 13 km deep · 55 km away
  6. 2.58km N of Cabazon, CA · 17605 days ago · 9 km deep · 88 km away
  7. 2.517km NW of Yucca Valley, CA · 17604 days ago · 7 km deep · 57 km away
  8. 2.311km SSE of Lucerne Valley, CA · 17603 days ago · 5 km deep · 62 km away
  9. 2.012km ESE of Barstow, CA · 17603 days ago · 5 km deep · 49 km away
  10. 1.78km SSE of Big Bear Lake, CA · 17602 days ago · 12 km deep · 75 km away
  11. 1.511km SSE of Lucerne Valley, CA · 17601 days ago · 8 km deep · 62 km away
  12. 3.611km SSE of Lucerne Valley, CA · 17601 days ago · 9 km deep · 62 km away
  13. 1.611km SSE of Lucerne Valley, CA · 17601 days ago · 7 km deep · 61 km away
  14. 2.311km SSE of Lucerne Valley, CA · 17601 days ago · 5 km deep · 62 km away
  15. 1.811km SSE of Lucerne Valley, CA · 17601 days ago · 8 km deep · 62 km away
  16. 2.112km SSE of Lucerne Valley, CA · 17601 days ago · 5 km deep · 62 km away
  17. 2.018km SW of Amboy, CA · 17600 days ago · 5 km deep · 58 km away
  18. 1.510km SSE of Lucerne Valley, CA · 17600 days ago · 5 km deep · 62 km away
  19. 1.911km SSE of Lucerne Valley, CA · 17600 days ago · 6 km deep · 62 km away
  20. 1.59km ENE of Big Bear City, CA · 17600 days ago · 11 km deep · 57 km away
  21. 2.110km SSW of Morongo Valley, CA · 17600 days ago · 17 km deep · 86 km away
  22. 1.58km NNE of Banning, CA · 17599 days ago · 10 km deep · 90 km away
  23. 1.611km SSE of Lucerne Valley, CA · 17596 days ago · 6 km deep · 62 km away
  24. 1.64km SW of Big Bear Lake, CA · 17596 days ago · 8 km deep · 74 km away
  25. 1.618km SW of Amboy, CA · 17596 days ago · 9 km deep · 58 km away
  26. 2.23km WSW of Yucaipa, CA · 17595 days ago · 12 km deep · 99 km away
  27. 1.838km SW of Ludlow, CA · 17594 days ago · 4 km deep · 24 km away
  28. 2.237km SW of Ludlow, CA · 17593 days ago · 4 km deep · 23 km away
  29. 1.55km SSE of Big Bear City, CA · 17593 days ago · 10 km deep · 69 km away
  30. 1.512km ESE of Lucerne Valley, CA · 17593 days ago · 12 km deep · 55 km away
  31. 1.83km SW of Big Bear Lake, CA · 17592 days ago · 8 km deep · 74 km away
  32. 1.916km SE of Big Bear City, CA · 17590 days ago · 2 km deep · 70 km away
  33. 1.77km NE of Beaumont, CA · 17589 days ago · 4 km deep · 96 km away
  34. 2.116km SE of Big Bear City, CA · 17589 days ago · 0 km deep · 71 km away
  35. 1.810km NE of Desert Hot Springs, CA · 17587 days ago · 7 km deep · 77 km away
  36. 2.116km SE of Big Bear City, CA · 17586 days ago · 2 km deep · 70 km away
  37. 2.220km NW of Yucca Valley, CA · 17585 days ago · 11 km deep · 57 km away
  38. 1.74km SW of Big Bear Lake, CA · 17583 days ago · 7 km deep · 74 km away
  39. 1.84km SW of Big Bear Lake, CA · 17583 days ago · 9 km deep · 74 km away
  40. 2.217km NW of Yucca Valley, CA · 17583 days ago · 9 km deep · 56 km away
  41. 1.74km NNW of Beaumont, CA · 17583 days ago · 17 km deep · 100 km away
  42. 2.67km NNE of Banning, CA · 17582 days ago · 6 km deep · 91 km away
  43. 1.710km N of Big Bear Lake, CA · 17581 days ago · 3 km deep · 65 km away
  44. 2.14km NNE of Running Springs, CA · 17581 days ago · 2 km deep · 83 km away
  45. 1.911km NE of Cabazon, CA · 17581 days ago · 18 km deep · 85 km away
  46. 1.89km W of Garnet, CA · 17581 days ago · 17 km deep · 95 km away
  47. 1.612km N of Banning, CA · 17581 days ago · 17 km deep · 88 km away
  48. 2.121km N of Joshua Tree, CA · 17581 days ago · 1 km deep · 44 km away
  49. 2.221km N of Joshua Tree, CA · 17581 days ago · 0 km deep · 44 km away
  50. 1.911km N of Joshua Tree, CA · 17579 days ago · 6 km deep · 54 km away
  51. 1.610km NE of Cabazon, CA · 17579 days ago · 14 km deep · 87 km away
  52. 2.04km SW of Big Bear Lake, CA · 17579 days ago · 6 km deep · 74 km away
  53. 1.511km WNW of Morongo Valley, CA · 17577 days ago · 9 km deep · 77 km away
  54. 1.910km SW of Lucerne Valley, CA · 17577 days ago · 4 km deep · 71 km away
  55. 1.64km SE of Big Bear Lake, CA · 17576 days ago · 17 km deep · 71 km away
  56. 1.612km SW of Morongo Valley, CA · 17576 days ago · 13 km deep · 87 km away
  57. 2.012km N of Cabazon, CA · 17574 days ago · 9 km deep · 84 km away
  58. 2.021km N of Joshua Tree, CA · 17573 days ago · 0 km deep · 44 km away
  59. 1.912km N of Joshua Tree, CA · 17570 days ago · 9 km deep · 53 km away
  60. 1.511km SW of Morongo Valley, CA · 17569 days ago · 16 km deep · 87 km away

The first 60 of 95.

Before

  1. 1.617km N of Joshua Tree, CA · 17613 days ago · 10 km deep · 48 km away
  2. 1.57km N of Big Bear City, CA · 17614 days ago · 10 km deep · 59 km away
  3. 1.711km SSE of Lucerne Valley, CA · 17614 days ago · 8 km deep · 62 km away
  4. 1.86km N of Big Bear City, CA · 17615 days ago · 7 km deep · 60 km away
  5. 2.98km ENE of Big Bear City, CA · 17616 days ago · 9 km deep · 58 km away
  6. 1.729km S of Cadiz, CA · 17617 days ago · 3 km deep · 90 km away
  7. 1.710km NNE of Lake Arrowhead, CA · 17617 days ago · 7 km deep · 82 km away
  8. 2.112km ENE of Desert Hot Springs, CA · 17618 days ago · 8 km deep · 81 km away
  9. 1.98km NE of Desert Hot Springs, CA · 17618 days ago · 6 km deep · 78 km away
  10. 1.78km NE of Desert Hot Springs, CA · 17620 days ago · 2 km deep · 80 km away
  11. 2.229km E of Barstow, CA · 17620 days ago · 4 km deep · 35 km away
  12. 1.711km NNW of Cabazon, CA · 17621 days ago · 16 km deep · 87 km away
  13. 2.04km SE of Garnet, CA · 17621 days ago · 0 km deep · 94 km away
  14. 3.65km SE of Garnet, CA · 17621 days ago · 2 km deep · 94 km away
  15. 1.811km E of Desert Hot Springs, CA · 17621 days ago · 8 km deep · 85 km away
  16. 1.616km N of Joshua Tree, CA · 17622 days ago · 3 km deep · 49 km away
  17. 1.810km NE of Running Springs, CA · 17622 days ago · 7 km deep · 77 km away
  18. 1.55km N of Big Bear City, CA · 17624 days ago · 7 km deep · 61 km away
  19. 2.04km NW of Joshua Tree, CA · 17626 days ago · 2 km deep · 62 km away
  20. 1.612km ENE of Cabazon, CA · 17626 days ago · 11 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3340739. Read Fri, Oct 2, 2026, 2:44 PM UTC.