California earthquakes

M1.7 earthquake 10km SE of Anza, CA

A magnitude 1.7 earthquake struck 10km SE of Anza, CA on Sat, Feb 4, 1978, 10:15 AM PST (18:15 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M4.0 7km SW of Big Bear Lake, CA. This one was a foreshock.

Anza forecastMore in California

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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
1.7 (Mc), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1978-02-04 18:15:00 UTC
Depth
9.5 km (5.9 mi), shallow
Epicenter
33.487° N, 116.606° 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, 1.9 km in depth
Depth from
From location
Station coverage gap
126°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 177 in the 60 days after this one and 134 in the 30 days before it.

After

  1. 1.613km ENE of Big Bear City, CA · 17774 days ago · 5 km deep · 92 km away
  2. 1.82km WNW of Yucaipa, CA · 17774 days ago · 16 km deep · 75 km away
  3. 2.222km ESE of Anza, CA · 17773 days ago · 15 km deep · 14 km away
  4. 2.313km ENE of Big Bear City, CA · 17773 days ago · 0 km deep · 92 km away
  5. 2.313km ENE of Big Bear City, CA · 17773 days ago · 0 km deep · 92 km away
  6. 1.713km ENE of Big Bear City, CA · 17773 days ago · 2 km deep · 91 km away
  7. 3.713km ENE of Big Bear City, CA · 17773 days ago · 0 km deep · 92 km away
  8. 2.013km ENE of Big Bear City, CA · 17773 days ago · 0 km deep · 92 km away
  9. 1.810km NE of Aguanga, CA · 17773 days ago · 7 km deep · 17 km away
  10. 1.616km ESE of Anza, CA · 17773 days ago · 14 km deep · 9 km away
  11. 2.213km ENE of Big Bear City, CA · 17773 days ago · 0 km deep · 92 km away
  12. 1.616km ESE of Anza, CA · 17773 days ago · 15 km deep · 9 km away
  13. 1.814km ENE of Big Bear City, CA · 17773 days ago · 3 km deep · 93 km away
  14. 1.89km NE of Aguanga, CA · 17773 days ago · 6 km deep · 17 km away
  15. 3.213km N of Cabazon, CA · 17773 days ago · 13 km deep · 62 km away
  16. 1.814km N of Cabazon, CA · 17773 days ago · 15 km deep · 64 km away
  17. 3.313km N of Cabazon, CA · 17773 days ago · 13 km deep · 62 km away
  18. 2.317km ESE of Anza, CA · 17773 days ago · 13 km deep · 9 km away
  19. 1.614km N of Cabazon, CA · 17773 days ago · 11 km deep · 64 km away
  20. 2.212km SE of Bombay Beach, CA · 17773 days ago · 6 km deep · 92 km away
  21. 1.513km N of Cabazon, CA · 17773 days ago · 6 km deep · 63 km away
  22. 2.413km ENE of Big Bear City, CA · 17772 days ago · 0 km deep · 91 km away
  23. 1.726km WNW of Desert Center, CA · 17772 days ago · 6 km deep · 92 km away
  24. 2.826km WNW of Desert Center, CA · 17772 days ago · 4 km deep · 92 km away
  25. 2.027km WNW of Desert Center, CA · 17772 days ago · 3 km deep · 91 km away
  26. 1.75km WNW of Niland, CA · 17772 days ago · 6 km deep · 100 km away
  27. 2.25km WNW of Niland, CA · 17772 days ago · 6 km deep · 100 km away
  28. 3.55km WNW of Niland, CA · 17772 days ago · 4 km deep · 99 km away
  29. 1.527km WNW of Desert Center, CA · 17772 days ago · 4 km deep · 91 km away
  30. 2.026km WNW of Desert Center, CA · 17772 days ago · 2 km deep · 92 km away
  31. 2.18km NNE of Banning, CA · 17772 days ago · 10 km deep · 60 km away
  32. 1.512km N of Borrego Springs, CA · 17772 days ago · 12 km deep · 26 km away
  33. 1.76km W of Niland, CA · 17772 days ago · 5 km deep · 99 km away
  34. 2.28km NNE of Banning, CA · 17772 days ago · 10 km deep · 60 km away
  35. 1.610km NE of Aguanga, CA · 17772 days ago · 6 km deep · 17 km away
  36. 1.611km N of Big Bear City, CA · 17771 days ago · 5 km deep · 100 km away
  37. 1.83km SSW of Mentone, CA · 17771 days ago · 9 km deep · 80 km away
  38. 1.912km W of Westmorland, CA · 17771 days ago · 3 km deep · 94 km away
  39. 1.63km SSW of Mentone, CA · 17771 days ago · 8 km deep · 79 km away
  40. 1.73km SW of Mentone, CA · 17771 days ago · 9 km deep · 80 km away
  41. 1.63km ESE of Redlands, CA · 17771 days ago · 9 km deep · 80 km away
  42. 2.23km ESE of Redlands, CA · 17771 days ago · 8 km deep · 80 km away
  43. 1.95km NW of Aguanga, CA · 17771 days ago · 14 km deep · 27 km away
  44. 1.66km NE of Indio, CA · 17770 days ago · 6 km deep · 51 km away
  45. 1.827km WNW of Desert Center, CA · 17770 days ago · 6 km deep · 91 km away
  46. 1.94km ESE of Bombay Beach, CA · 17770 days ago · 7 km deep · 87 km away
  47. 1.717km ESE of Anza, CA · 17769 days ago · 13 km deep · 9 km away
  48. 1.716km ESE of Anza, CA · 17769 days ago · 12 km deep · 8 km away
  49. 1.84km SSW of Cabazon, CA · 17769 days ago · 6 km deep · 48 km away
  50. 2.28km SSW of Borrego Springs, CA · 17768 days ago · 15 km deep · 39 km away
  51. 1.926km WNW of Desert Center, CA · 17768 days ago · 3 km deep · 93 km away
  52. 2.78km NW of Big Bear Lake, CA · 17768 days ago · 8 km deep · 95 km away
  53. 1.69km NE of Cabazon, CA · 17767 days ago · 6 km deep · 56 km away
  54. 2.527km WNW of Desert Center, CA · 17766 days ago · 1 km deep · 92 km away
  55. 1.712km SSE of Ocotillo Wells, CA · 17766 days ago · 6 km deep · 70 km away
  56. 2.126km WNW of Desert Center, CA · 17766 days ago · 2 km deep · 92 km away
  57. 1.726km WNW of Desert Center, CA · 17766 days ago · 3 km deep · 92 km away
  58. 1.714km ENE of Big Bear City, CA · 17766 days ago · 1 km deep · 93 km away
  59. 2.311km WNW of Morongo Valley, CA · 17766 days ago · 5 km deep · 67 km away
  60. 1.58km ESE of Valle Vista, CA · 17766 days ago · 14 km deep · 33 km away

The first 60 of 177.

Before

  1. 2.111km SE of Anza, CA · 17774 days ago · 10 km deep · 2 km away
  2. 1.710km NE of Aguanga, CA · 17775 days ago · 9 km deep · 17 km away
  3. 2.36km E of Calimesa, CA · 17775 days ago · 13 km deep · 66 km away
  4. 2.323km WSW of Westmorland, CA · 17776 days ago · 4 km deep · 93 km away
  5. 1.826km WNW of Desert Center, CA · 17776 days ago · 1 km deep · 93 km away
  6. 2.924km WSW of Westmorland, CA · 17776 days ago · 4 km deep · 92 km away
  7. 1.67km E of Borrego Springs, CA · 17776 days ago · 6 km deep · 37 km away
  8. 2.03km NW of Colton, CA · 17776 days ago · 4 km deep · 95 km away
  9. 1.810km NE of Cabazon, CA · 17776 days ago · 14 km deep · 54 km away
  10. 1.54km WSW of Palomar Observatory, CA · 17776 days ago · 11 km deep · 32 km away
  11. 1.510km NE of Aguanga, CA · 17777 days ago · 6 km deep · 16 km away
  12. 1.65km E of Anza, CA · 17777 days ago · 15 km deep · 8 km away
  13. 2.53km ESE of Loma Linda, CA · 17777 days ago · 15 km deep · 84 km away
  14. 1.826km WNW of Desert Center, CA · 17777 days ago · 2 km deep · 92 km away
  15. 1.526km WNW of Desert Center, CA · 17777 days ago · 2 km deep · 92 km away
  16. 2.126km WNW of Desert Center, CA · 17777 days ago · 2 km deep · 93 km away
  17. 1.826km WNW of Desert Center, CA · 17777 days ago · 4 km deep · 92 km away
  18. 2.126km WNW of Desert Center, CA · 17777 days ago · 1 km deep · 92 km away
  19. 1.918km NE of Coachella, CA · 17777 days ago · 1 km deep · 63 km away
  20. 1.826km WNW of Desert Center, CA · 17778 days ago · 2 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci9998702. Read Sun, Oct 4, 2026, 1:48 PM UTC.