California earthquakes

M1.7 earthquake 15km ESE of Anza, CA

A magnitude 1.7 earthquake struck 15km ESE of Anza, CA on Mon, Apr 17, 1978, 5:33 AM PST (13:33 UTC), 14 km (9 mi) below the surface.

A larger quake followed: M4.4 14km NNW of Warner Springs, CA. This one was a foreshock.

Anza 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 (Mc), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1978-04-17 13:33:27 UTC
Depth
13.7 km (8.5 mi), shallow
Epicenter
33.501° N, 116.524° 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 0.6 km horizontally, 0.9 km in depth
Depth from
From location
Station coverage gap
68°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 175 in the 60 days after this one and 119 in the 30 days before it.

After

  1. 1.94km NNE of Running Springs, CA · 17702 days ago · 3 km deep · 97 km away
  2. 1.77km SW of Big Bear Lake, CA · 17702 days ago · 12 km deep · 87 km away
  3. 1.76km NNW of Big Bear Lake, CA · 17702 days ago · 2 km deep · 96 km away
  4. 2.78km E of North Shore, CA · 17702 days ago · 9 km deep · 63 km away
  5. 2.58km E of North Shore, CA · 17702 days ago · 11 km deep · 63 km away
  6. 1.713km E of Desert Hot Springs, CA · 17701 days ago · 6 km deep · 52 km away
  7. 1.914km E of Desert Hot Springs, CA · 17701 days ago · 4 km deep · 53 km away
  8. 1.613km E of Desert Hot Springs, CA · 17701 days ago · 5 km deep · 53 km away
  9. 2.211km N of Banning, CA · 17701 days ago · 20 km deep · 67 km away
  10. 1.727km SSW of Ocotillo Wells, CA · 17700 days ago · 7 km deep · 68 km away
  11. 2.018km ESE of Anza, CA · 17700 days ago · 12 km deep · 3 km away
  12. 1.87km WSW of Anza, CA · 17700 days ago · 6 km deep · 21 km away
  13. 1.95km SW of Morongo Valley, CA · 17700 days ago · 11 km deep · 58 km away
  14. 1.612km N of Cabazon, CA · 17700 days ago · 20 km deep · 62 km away
  15. 2.39km NE of Cabazon, CA · 17700 days ago · 13 km deep · 55 km away
  16. 1.821km ESE of Anza, CA · 17700 days ago · 13 km deep · 6 km away
  17. 2.114km NE of Thermal, CA · 17699 days ago · 6 km deep · 52 km away
  18. 1.810km W of Niland, CA · 17699 days ago · 4 km deep · 88 km away
  19. 1.73km N of Palomar Observatory, CA · 17699 days ago · 10 km deep · 34 km away
  20. 2.510km NNE of Ocotillo Wells, CA · 17698 days ago · 13 km deep · 51 km away
  21. 2.014km NE of Thermal, CA · 17698 days ago · 5 km deep · 52 km away
  22. 2.216km NE of Thousand Palms, CA · 17698 days ago · 6 km deep · 53 km away
  23. 1.910km W of Niland, CA · 17697 days ago · 3 km deep · 88 km away
  24. 1.610km ENE of Thousand Palms, CA · 17697 days ago · 3 km deep · 46 km away
  25. 1.823km N of Yucca Valley, CA · 17696 days ago · 5 km deep · 91 km away
  26. 2.49km NE of Cabazon, CA · 17696 days ago · 18 km deep · 56 km away
  27. 1.96km NW of Cabazon, CA · 17696 days ago · 12 km deep · 58 km away
  28. 1.56km NE of Westmorland, CA · 17696 days ago · 11 km deep · 99 km away
  29. 1.821km ENE of Coachella, CA · 17696 days ago · 6 km deep · 59 km away
  30. 2.037km NW of Desert Center, CA · 17695 days ago · 1 km deep · 91 km away
  31. 1.89km ENE of Aguanga, CA · 17695 days ago · 9 km deep · 24 km away
  32. 2.04km NNW of Beaumont, CA · 17695 days ago · 17 km deep · 67 km away
  33. 2.023km SW of Ocotillo Wells, CA · 17695 days ago · 6 km deep · 58 km away
  34. 3.37km NNE of Beaumont, CA · 17694 days ago · 20 km deep · 66 km away
  35. 1.712km NNW of Borrego Springs, CA · 17693 days ago · 12 km deep · 19 km away
  36. 2.19km WSW of Anza, CA · 17693 days ago · 6 km deep · 21 km away
  37. 1.55km NE of Running Springs, CA · 17693 days ago · 4 km deep · 97 km away
  38. 1.84km NNE of Running Springs, CA · 17692 days ago · 3 km deep · 97 km away
  39. 1.67km WNW of Desert Hot Springs, CA · 17692 days ago · 8 km deep · 53 km away
  40. 2.33km NNE of Running Springs, CA · 17692 days ago · 4 km deep · 97 km away
  41. 1.53km ENE of Calimesa, CA · 17692 days ago · 20 km deep · 72 km away
  42. 1.78km N of Valle Vista, CA · 17692 days ago · 11 km deep · 48 km away
  43. 2.511km N of Borrego Springs, CA · 17692 days ago · 15 km deep · 20 km away
  44. 1.615km SSW of Oasis, CA · 17692 days ago · 6 km deep · 39 km away
  45. 1.84km NNE of Running Springs, CA · 17691 days ago · 3 km deep · 97 km away
  46. 1.55km SE of Ocotillo Wells, CA · 17691 days ago · 10 km deep · 59 km away
  47. 1.512km NE of Indio, CA · 17691 days ago · 6 km deep · 50 km away
  48. 1.74km NNE of Running Springs, CA · 17691 days ago · 3 km deep · 97 km away
  49. 3.717km NW of Yucca Valley, CA · 17691 days ago · 9 km deep · 80 km away
  50. 1.618km NW of Yucca Valley, CA · 17691 days ago · 9 km deep · 82 km away
  51. 2.018km NW of Yucca Valley, CA · 17691 days ago · 7 km deep · 81 km away
  52. 2.218km NW of Yucca Valley, CA · 17691 days ago · 8 km deep · 81 km away
  53. 2.118km NW of Yucca Valley, CA · 17691 days ago · 8 km deep · 82 km away
  54. 1.68km WSW of Anza, CA · 17690 days ago · 9 km deep · 21 km away
  55. 1.618km NW of Yucca Valley, CA · 17690 days ago · 8 km deep · 81 km away
  56. 1.87km NW of Morongo Valley, CA · 17690 days ago · 9 km deep · 67 km away
  57. 1.718km NW of Yucca Valley, CA · 17690 days ago · 7 km deep · 81 km away
  58. 1.620km E of Anza, CA · 17690 days ago · 9 km deep · 7 km away
  59. 1.717km NW of Yucca Valley, CA · 17690 days ago · 8 km deep · 81 km away
  60. 2.117km NW of Yucca Valley, CA · 17690 days ago · 7 km deep · 80 km away

The first 60 of 175.

Before

  1. 1.914km ESE of Anza, CA · 17702 days ago · 13 km deep · 2 km away
  2. 2.510km SW of Morongo Valley, CA · 17702 days ago · 9 km deep · 56 km away
  3. 1.79km E of North Shore, CA · 17702 days ago · 9 km deep · 63 km away
  4. 1.79km WNW of Twentynine Palms, CA · 17703 days ago · 9 km deep · 83 km away
  5. 1.88km E of North Shore, CA · 17703 days ago · 6 km deep · 62 km away
  6. 2.84km NNE of Running Springs, CA · 17703 days ago · 3 km deep · 97 km away
  7. 2.68km E of North Shore, CA · 17703 days ago · 9 km deep · 62 km away
  8. 2.58km E of North Shore, CA · 17703 days ago · 4 km deep · 62 km away
  9. 2.28km E of North Shore, CA · 17703 days ago · 5 km deep · 62 km away
  10. 1.522km WSW of Westmorland, CA · 17703 days ago · 10 km deep · 88 km away
  11. 1.710km SE of Anza, CA · 17703 days ago · 10 km deep · 7 km away
  12. 1.62km SSE of Loma Linda, CA · 17703 days ago · 7 km deep · 89 km away
  13. 1.927km ENE of Pine Valley, CA · 17703 days ago · 12 km deep · 68 km away
  14. 1.74km NE of Running Springs, CA · 17704 days ago · 3 km deep · 97 km away
  15. 1.84km NNE of Running Springs, CA · 17704 days ago · 3 km deep · 97 km away
  16. 1.74km NNE of Running Springs, CA · 17704 days ago · 5 km deep · 98 km away
  17. 1.74km NNE of Running Springs, CA · 17704 days ago · 3 km deep · 97 km away
  18. 1.74km NNE of Running Springs, CA · 17705 days ago · 4 km deep · 98 km away
  19. 1.94km NNE of Running Springs, CA · 17705 days ago · 3 km deep · 98 km away
  20. 1.94km NNE of Running Springs, CA · 17705 days ago · 4 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci10079682. Read Sun, Oct 4, 2026, 4:24 PM UTC.