California earthquakes

M1.7 earthquake 9km WSW of Anza, CA

A magnitude 1.7 earthquake struck 9km WSW of Anza, CA on Wed, Feb 4, 1981, 6:56 AM PST (14:56 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M3.7 6km NNE of Yucaipa, 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 (Mh), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1981-02-04 14:56:24 UTC
Depth
14.8 km (9.2 mi), shallow
Epicenter
33.529° N, 116.767° 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 0.8 km horizontally, 2.6 km in depth
Magnitude uncertainty
±0.28
Depth from
From location
Station coverage gap
79°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 185 in the 60 days after this one and 128 in the 30 days before it.

After

  1. 2.010km NE of Lake Arrowhead, CA · 16679 days ago · 5 km deep · 93 km away
  2. 1.79km NE of Aguanga, CA · 16679 days ago · 4 km deep · 4 km away
  3. 1.611km NE of Aguanga, CA · 16678 days ago · 4 km deep · 3 km away
  4. 2.18km S of Salton City, CA · 16678 days ago · 10 km deep · 83 km away
  5. 1.910km WSW of Anza, CA · 16678 days ago · 3 km deep · 3 km away
  6. 2.310km NE of Aguanga, CA · 16678 days ago · 4 km deep · 3 km away
  7. 1.611km NE of Aguanga, CA · 16678 days ago · 7 km deep · 3 km away
  8. 1.610km NE of Aguanga, CA · 16678 days ago · 4 km deep · 4 km away
  9. 2.311km SW of Anza, CA · 16678 days ago · 4 km deep · 4 km away
  10. 2.010km ENE of Aguanga, CA · 16678 days ago · 3 km deep · 4 km away
  11. 2.010km NE of Aguanga, CA · 16678 days ago · 3 km deep · 4 km away
  12. 3.08km NE of Aguanga, CA · 16678 days ago · 3 km deep · 5 km away
  13. 1.97km E of Cabazon, CA · 16678 days ago · 11 km deep · 43 km away
  14. 2.811km WSW of Anza, CA · 16677 days ago · 5 km deep · 3 km away
  15. 1.910km NE of Aguanga, CA · 16677 days ago · 4 km deep · 3 km away
  16. 1.610km NE of Aguanga, CA · 16677 days ago · 2 km deep · 4 km away
  17. 1.610km NE of Aguanga, CA · 16677 days ago · 5 km deep · 3 km away
  18. 1.910km NE of Aguanga, CA · 16677 days ago · 5 km deep · 3 km away
  19. 1.811km NE of Aguanga, CA · 16677 days ago · 4 km deep · 3 km away
  20. 1.611km NE of Aguanga, CA · 16677 days ago · 4 km deep · 3 km away
  21. 1.711km NE of Aguanga, CA · 16677 days ago · 6 km deep · 3 km away
  22. 1.911km NE of Aguanga, CA · 16677 days ago · 5 km deep · 3 km away
  23. 2.116km NE of Pine Valley, CA · 16677 days ago · 5 km deep · 77 km away
  24. 1.610km NE of Aguanga, CA · 16677 days ago · 4 km deep · 3 km away
  25. 2.912km NNE of Cabazon, CA · 16677 days ago · 12 km deep · 54 km away
  26. 2.46km S of Salton City, CA · 16677 days ago · 1 km deep · 81 km away
  27. 1.97km SSW of Salton City, CA · 16676 days ago · 6 km deep · 79 km away
  28. 1.613km NNE of Indio, CA · 16676 days ago · 8 km deep · 64 km away
  29. 1.99km SW of Salton City, CA · 16676 days ago · 5 km deep · 76 km away
  30. 2.06km SSW of Salton City, CA · 16676 days ago · 5 km deep · 80 km away
  31. 1.69km NE of Aguanga, CA · 16676 days ago · 5 km deep · 5 km away
  32. 1.610km NE of Aguanga, CA · 16676 days ago · 4 km deep · 4 km away
  33. 2.26km SSW of Salton City, CA · 16676 days ago · 6 km deep · 80 km away
  34. 1.711km NE of Aguanga, CA · 16675 days ago · 2 km deep · 3 km away
  35. 2.210km NE of Aguanga, CA · 16675 days ago · 0 km deep · 4 km away
  36. 2.311km SW of Anza, CA · 16675 days ago · 5 km deep · 4 km away
  37. 2.210km WSW of Anza, CA · 16675 days ago · 6 km deep · 2 km away
  38. 1.910km NE of Aguanga, CA · 16674 days ago · 3 km deep · 4 km away
  39. 1.711km SW of Anza, CA · 16674 days ago · 2 km deep · 3 km away
  40. 1.610km WSW of Anza, CA · 16674 days ago · 10 km deep · 2 km away
  41. 1.725km WNW of Ocotillo, CA · 16674 days ago · 5 km deep · 93 km away
  42. 2.19km NE of Aguanga, CA · 16674 days ago · 2 km deep · 5 km away
  43. 2.26km SSW of Redlands, CA · 16673 days ago · 14 km deep · 67 km away
  44. 1.510km NE of Aguanga, CA · 16673 days ago · 5 km deep · 3 km away
  45. 1.88km NE of Aguanga, CA · 16673 days ago · 5 km deep · 5 km away
  46. 1.910km NNW of Twentynine Palms, CA · 16673 days ago · 0 km deep · 99 km away
  47. 1.611km WSW of Corona, CA · 16673 days ago · 5 km deep · 91 km away
  48. 2.48km ENE of Aguanga, CA · 16672 days ago · 3 km deep · 6 km away
  49. 1.59km NE of Aguanga, CA · 16672 days ago · 5 km deep · 4 km away
  50. 2.69km NE of Aguanga, CA · 16672 days ago · 0 km deep · 5 km away
  51. 1.59km NE of Aguanga, CA · 16672 days ago · 5 km deep · 4 km away
  52. 1.620km ESE of Anza, CA · 16672 days ago · 6 km deep · 27 km away
  53. 1.58km NE of Aguanga, CA · 16671 days ago · 5 km deep · 5 km away
  54. 1.719km ESE of Anza, CA · 16671 days ago · 10 km deep · 26 km away
  55. 1.917km ESE of Anza, CA · 16671 days ago · 9 km deep · 25 km away
  56. 1.613km E of Borrego Springs, CA · 16671 days ago · 8 km deep · 57 km away
  57. 1.710km NE of Aguanga, CA · 16671 days ago · 3 km deep · 4 km away
  58. 2.010km NE of Aguanga, CA · 16671 days ago · 1 km deep · 4 km away
  59. 2.09km NE of Aguanga, CA · 16671 days ago · 2 km deep · 5 km away
  60. 1.99km NE of Aguanga, CA · 16671 days ago · 4 km deep · 4 km away

The first 60 of 185.

Before

  1. 2.210km WSW of Anza, CA · 16679 days ago · 2 km deep · 3 km away
  2. 1.510km NNW of Twentynine Palms, CA · 16679 days ago · 9 km deep · 97 km away
  3. 1.610km WSW of Anza, CA · 16679 days ago · 4 km deep · 3 km away
  4. 1.810km NE of Aguanga, CA · 16679 days ago · 5 km deep · 3 km away
  5. 1.910km NE of Aguanga, CA · 16679 days ago · 4 km deep · 3 km away
  6. 2.510km NE of Aguanga, CA · 16679 days ago · 2 km deep · 4 km away
  7. 1.510km NE of Aguanga, CA · 16679 days ago · 3 km deep · 4 km away
  8. 1.610km NE of Aguanga, CA · 16679 days ago · 3 km deep · 3 km away
  9. 2.412km SSE of Anza, CA · 16679 days ago · 2 km deep · 16 km away
  10. 1.619km SSW of Ocotillo Wells, CA · 16680 days ago · 6 km deep · 78 km away
  11. 1.710km NE of Aguanga, CA · 16680 days ago · 5 km deep · 3 km away
  12. 1.910km NE of Aguanga, CA · 16681 days ago · 5 km deep · 4 km away
  13. 2.219km SSW of Ocotillo Wells, CA · 16681 days ago · 5 km deep · 78 km away
  14. 2.76km NNE of Cabazon, CA · 16681 days ago · 6 km deep · 49 km away
  15. 1.710km NE of Aguanga, CA · 16681 days ago · 3 km deep · 3 km away
  16. 1.610km WSW of Anza, CA · 16681 days ago · 5 km deep · 2 km away
  17. 1.813km ENE of Borrego Springs, CA · 16681 days ago · 3 km deep · 54 km away
  18. 1.525km ESE of Julian, CA · 16681 days ago · 6 km deep · 70 km away
  19. 1.511km NE of Aguanga, CA · 16681 days ago · 3 km deep · 3 km away
  20. 1.710km NE of Aguanga, CA · 16681 days ago · 4 km deep · 4 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci12254111. Read Mon, Oct 5, 2026, 5:32 AM UTC.