California earthquakes

M1.7 earthquake 11km WSW of Anza, CA

A magnitude 1.7 earthquake struck 11km WSW of Anza, CA on Sat, Apr 4, 1981, 7:28 PM PST (03:28 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.5 10km NW 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 (Mh), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1981-04-05 03:28:58 UTC
Depth
-0.6 km (-0.4 mi), shallow
Epicenter
33.509° N, 116.776° 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 0.4 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.27
Depth from
From location
Station coverage gap
74°
Stations used
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 170 in the 60 days after this one and 84 in the 30 days before it.

After

  1. 1.76km NW of San Jacinto, CA · 16615 days ago · 13 km deep · 41 km away
  2. 1.713km E of Borrego Springs, CA · 16615 days ago · 4 km deep · 58 km away
  3. 1.96km SSW of Salton City, CA · 16613 days ago · 5 km deep · 79 km away
  4. 3.123km ENE of Pine Valley, CA · 16613 days ago · 14 km deep · 78 km away
  5. 1.724km N of Yucca Valley, CA · 16613 days ago · 0 km deep · 95 km away
  6. 2.47km NE of Cabazon, CA · 16613 days ago · 16 km deep · 51 km away
  7. 1.510km NNE of Borrego Springs, CA · 16613 days ago · 11 km deep · 44 km away
  8. 1.624km NNW of Yucca Valley, CA · 16613 days ago · 0 km deep · 94 km away
  9. 1.68km NE of Aguanga, CA · 16612 days ago · 4 km deep · 3 km away
  10. 1.510km NE of Aguanga, CA · 16612 days ago · 1 km deep · 1 km away
  11. 1.510km N of Borrego Springs, CA · 16612 days ago · 10 km deep · 43 km away
  12. 1.611km N of Borrego Springs, CA · 16612 days ago · 10 km deep · 43 km away
  13. 1.810km NE of Aguanga, CA · 16612 days ago · 3 km deep · 1 km away
  14. 2.47km NE of Aguanga, CA · 16612 days ago · 4 km deep · 4 km away
  15. 1.613km WNW of Anza, CA · 16612 days ago · 11 km deep · 10 km away
  16. 1.711km NE of Aguanga, CA · 16612 days ago · 4 km deep · 1 km away
  17. 1.69km NNE of Pala, CA · 16611 days ago · 5 km deep · 27 km away
  18. 2.222km ENE of Pine Valley, CA · 16611 days ago · 15 km deep · 79 km away
  19. 1.511km NE of Aguanga, CA · 16611 days ago · 4 km deep · 1 km away
  20. 2.28km SSW of Salton City, CA · 16610 days ago · 5 km deep · 78 km away
  21. 1.611km WSW of Anza, CA · 16610 days ago · 4 km deep · 0 km away
  22. 1.66km NW of Aguanga, CA · 16610 days ago · 11 km deep · 13 km away
  23. 1.719km SSE of Joshua Tree, CA · 16610 days ago · -1 km deep · 71 km away
  24. 1.810km N of Indio, CA · 16610 days ago · 5 km deep · 62 km away
  25. 1.98km SSE of Idyllwild, CA · 16609 days ago · 16 km deep · 20 km away
  26. 1.710km NE of Aguanga, CA · 16609 days ago · 4 km deep · 1 km away
  27. 1.719km SSE of Joshua Tree, CA · 16609 days ago · -1 km deep · 71 km away
  28. 1.52km S of San Bernardino, CA · 16609 days ago · 3 km deep · 82 km away
  29. 1.82km S of San Bernardino, CA · 16609 days ago · 5 km deep · 82 km away
  30. 1.712km SSE of Twentynine Palms, CA · 16608 days ago · 2 km deep · 91 km away
  31. 1.83km S of National City, CA · 16608 days ago · 5 km deep · 100 km away
  32. 1.516km NNE of Borrego Springs, CA · 16608 days ago · 8 km deep · 48 km away
  33. 2.219km SSW of Ocotillo Wells, CA · 16608 days ago · 4 km deep · 77 km away
  34. 1.56km ENE of North Shore, CA · 16608 days ago · 8 km deep · 84 km away
  35. 1.711km ESE of Anza, CA · 16607 days ago · 8 km deep · 20 km away
  36. 1.618km SSW of Ocotillo Wells, CA · 16607 days ago · 5 km deep · 77 km away
  37. 1.910km NE of Aguanga, CA · 16607 days ago · 4 km deep · 2 km away
  38. 1.68km NNE of Banning, CA · 16606 days ago · 17 km deep · 54 km away
  39. 2.016km E of Big Bear City, CA · 16606 days ago · 5 km deep · 82 km away
  40. 2.310km NE of Ocotillo Wells, CA · 16606 days ago · 12 km deep · 77 km away
  41. 1.610km NE of Aguanga, CA · 16605 days ago · 4 km deep · 1 km away
  42. 1.99km NNW of Anza, CA · 16605 days ago · 9 km deep · 15 km away
  43. 2.52km NNW of Colton, CA · 16604 days ago · 16 km deep · 82 km away
  44. 1.618km N of Borrego Springs, CA · 16604 days ago · 8 km deep · 36 km away
  45. 2.510km S of Cabazon, CA · 16604 days ago · 14 km deep · 35 km away
  46. 2.015km SE of Ocotillo Wells, CA · 16603 days ago · 4 km deep · 87 km away
  47. 2.414km NE of Coachella, CA · 16603 days ago · -1 km deep · 71 km away
  48. 2.514km NE of Coachella, CA · 16603 days ago · -1 km deep · 71 km away
  49. 1.610km ENE of Aguanga, CA · 16603 days ago · 6 km deep · 3 km away
  50. 2.610km S of Idyllwild, CA · 16602 days ago · 12 km deep · 17 km away
  51. 2.313km NE of Coachella, CA · 16602 days ago · 1 km deep · 71 km away
  52. 1.66km NE of North Shore, CA · 16601 days ago · 9 km deep · 83 km away
  53. 1.919km SSE of Joshua Tree, CA · 16601 days ago · -1 km deep · 72 km away
  54. 3.510km NW of Warner Springs, CA · 16601 days ago · 12 km deep · 19 km away
  55. 1.69km ESE of Ocotillo Wells, CA · 16601 days ago · 5 km deep · 82 km away
  56. 1.811km NW of Warner Springs, CA · 16600 days ago · 11 km deep · 17 km away
  57. 1.57km S of Salton City, CA · 16600 days ago · 4 km deep · 81 km away
  58. 1.611km WSW of Anza, CA · 16600 days ago · 3 km deep · 0 km away
  59. 1.53km NNW of Loma Linda, CA · 16600 days ago · 16 km deep · 77 km away
  60. 1.58km NE of Aguanga, CA · 16599 days ago · 4 km deep · 3 km away

The first 60 of 170.

Before

  1. 1.610km NE of Aguanga, CA · 16616 days ago · -1 km deep · 2 km away
  2. 2.410km NE of Aguanga, CA · 16618 days ago · 3 km deep · 1 km away
  3. 1.511km WSW of Anza, CA · 16618 days ago · 3 km deep · 1 km away
  4. 2.010km NE of Aguanga, CA · 16618 days ago · 3 km deep · 2 km away
  5. 1.621km ESE of Anza, CA · 16619 days ago · 11 km deep · 29 km away
  6. 2.010km NE of Aguanga, CA · 16619 days ago · 3 km deep · 1 km away
  7. 3.413km W of Anza, CA · 16620 days ago · 11 km deep · 8 km away
  8. 1.78km W of Anza, CA · 16620 days ago · 5 km deep · 5 km away
  9. 1.620km E of Anza, CA · 16620 days ago · 5 km deep · 29 km away
  10. 2.122km NE of Indio, CA · 16621 days ago · 5 km deep · 78 km away
  11. 2.17km NNW of Fontana, CA · 16621 days ago · 5 km deep · 98 km away
  12. 1.84km NE of Ocotillo Wells, CA · 16621 days ago · 5 km deep · 74 km away
  13. 2.013km NE of Coachella, CA · 16622 days ago · 5 km deep · 70 km away
  14. 2.09km SW of Anza, CA · 16623 days ago · 4 km deep · 3 km away
  15. 1.523km SSW of La Quinta, CA · 16623 days ago · 11 km deep · 32 km away
  16. 1.713km ENE of Borrego Springs, CA · 16624 days ago · 7 km deep · 53 km away
  17. 1.83km SSE of San Bernardino, CA · 16624 days ago · 5 km deep · 81 km away
  18. 1.98km NE of Aguanga, CA · 16624 days ago · 5 km deep · 3 km away
  19. 2.912km N of Thousand Palms, CA · 16624 days ago · 3 km deep · 60 km away
  20. 1.61km SSW of San Bernardino, CA · 16624 days ago · 5 km deep · 83 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci515911. Read Thu, Oct 1, 2026, 2:24 PM UTC.