California earthquakes

M1.6 earthquake 21km ESE of Anza, CA

A magnitude 1.6 earthquake struck 21km ESE of Anza, CA on Wed, Apr 1, 1981, 4:42 PM PST (00:42 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M5.8 The 1981 Westmorland, California Earthquake. 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
1.6 (Mh), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1981-04-02 00:42:41 UTC
Depth
11.0 km (6.9 mi), shallow
Epicenter
33.461° N, 116.474° 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, 1.0 km in depth
Depth from
From location
Station coverage gap
71°
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: 193 in the 60 days after this one and 109 in the 30 days before it.

After

  1. 2.010km NE of Aguanga, CA · 16619 days ago · 3 km deep · 28 km away
  2. 1.511km WSW of Anza, CA · 16619 days ago · 3 km deep · 28 km away
  3. 2.410km NE of Aguanga, CA · 16619 days ago · 3 km deep · 28 km away
  4. 1.610km NE of Aguanga, CA · 16616 days ago · -1 km deep · 28 km away
  5. 1.711km WSW of Anza, CA · 16616 days ago · -1 km deep · 29 km away
  6. 1.61km WNW of Niland, CA · 16616 days ago · 3 km deep · 91 km away
  7. 1.76km NW of San Jacinto, CA · 16616 days ago · 13 km deep · 63 km away
  8. 1.713km E of Borrego Springs, CA · 16615 days ago · 4 km deep · 32 km away
  9. 1.66km SSW of Niland, CA · 16615 days ago · 5 km deep · 92 km away
  10. 1.61km S of Niland, CA · 16615 days ago · 2 km deep · 92 km away
  11. 1.63km S of Niland, CA · 16615 days ago · 8 km deep · 93 km away
  12. 1.63km SSW of Niland, CA · 16615 days ago · 5 km deep · 91 km away
  13. 2.33km SW of Niland, CA · 16615 days ago · 11 km deep · 90 km away
  14. 1.63km SSW of Niland, CA · 16615 days ago · 5 km deep · 91 km away
  15. 1.63km SSW of Niland, CA · 16615 days ago · 2 km deep · 92 km away
  16. 1.96km SSW of Salton City, CA · 16614 days ago · 5 km deep · 51 km away
  17. 3.123km ENE of Pine Valley, CA · 16614 days ago · 14 km deep · 61 km away
  18. 1.724km N of Yucca Valley, CA · 16614 days ago · 0 km deep · 96 km away
  19. 2.47km NE of Cabazon, CA · 16614 days ago · 16 km deep · 61 km away
  20. 1.510km NNE of Borrego Springs, CA · 16614 days ago · 11 km deep · 18 km away
  21. 2.031km WNW of Desert Center, CA · 16613 days ago · -1 km deep · 83 km away
  22. 1.624km NNW of Yucca Valley, CA · 16613 days ago · 0 km deep · 95 km away
  23. 1.68km NE of Aguanga, CA · 16613 days ago · 4 km deep · 31 km away
  24. 1.510km NE of Aguanga, CA · 16613 days ago · 1 km deep · 29 km away
  25. 1.510km N of Borrego Springs, CA · 16613 days ago · 10 km deep · 17 km away
  26. 1.611km N of Borrego Springs, CA · 16613 days ago · 10 km deep · 16 km away
  27. 1.810km NE of Aguanga, CA · 16613 days ago · 3 km deep · 29 km away
  28. 2.47km NE of Aguanga, CA · 16613 days ago · 4 km deep · 31 km away
  29. 1.613km WNW of Anza, CA · 16613 days ago · 11 km deep · 35 km away
  30. 1.711km NE of Aguanga, CA · 16612 days ago · 4 km deep · 29 km away
  31. 1.69km NNE of Pala, CA · 16612 days ago · 5 km deep · 54 km away
  32. 2.222km ENE of Pine Valley, CA · 16612 days ago · 15 km deep · 63 km away
  33. 1.511km NE of Aguanga, CA · 16611 days ago · 4 km deep · 28 km away
  34. 2.28km SSW of Salton City, CA · 16611 days ago · 5 km deep · 50 km away
  35. 1.611km WSW of Anza, CA · 16611 days ago · 4 km deep · 29 km away
  36. 1.66km NW of Aguanga, CA · 16611 days ago · 11 km deep · 41 km away
  37. 1.719km SSE of Joshua Tree, CA · 16610 days ago · -1 km deep · 61 km away
  38. 1.810km N of Indio, CA · 16610 days ago · 5 km deep · 46 km away
  39. 1.98km SSE of Idyllwild, CA · 16610 days ago · 16 km deep · 31 km away
  40. 1.710km NE of Aguanga, CA · 16610 days ago · 4 km deep · 29 km away
  41. 1.719km SSE of Joshua Tree, CA · 16610 days ago · -1 km deep · 61 km away
  42. 1.712km SSE of Twentynine Palms, CA · 16609 days ago · 2 km deep · 76 km away
  43. 1.79km SE of Bombay Beach, CA · 16609 days ago · 8 km deep · 77 km away
  44. 1.516km NNE of Borrego Springs, CA · 16609 days ago · 8 km deep · 20 km away
  45. 2.219km SSW of Ocotillo Wells, CA · 16609 days ago · 4 km deep · 57 km away
  46. 1.56km ENE of North Shore, CA · 16609 days ago · 8 km deep · 56 km away
  47. 1.711km ESE of Anza, CA · 16608 days ago · 8 km deep · 11 km away
  48. 1.618km SSW of Ocotillo Wells, CA · 16608 days ago · 5 km deep · 57 km away
  49. 1.910km NE of Aguanga, CA · 16607 days ago · 4 km deep · 28 km away
  50. 1.68km NNE of Banning, CA · 16607 days ago · 17 km deep · 69 km away
  51. 2.016km E of Big Bear City, CA · 16606 days ago · 5 km deep · 89 km away
  52. 2.310km NE of Ocotillo Wells, CA · 16606 days ago · 12 km deep · 50 km away
  53. 1.610km NE of Aguanga, CA · 16606 days ago · 4 km deep · 29 km away
  54. 1.99km NNW of Anza, CA · 16606 days ago · 9 km deep · 29 km away
  55. 1.618km N of Borrego Springs, CA · 16605 days ago · 8 km deep · 9 km away
  56. 2.510km S of Cabazon, CA · 16605 days ago · 14 km deep · 49 km away
  57. 2.015km SE of Ocotillo Wells, CA · 16604 days ago · 4 km deep · 62 km away
  58. 2.414km NE of Coachella, CA · 16604 days ago · -1 km deep · 50 km away
  59. 2.514km NE of Coachella, CA · 16604 days ago · -1 km deep · 51 km away
  60. 1.610km ENE of Aguanga, CA · 16603 days ago · 6 km deep · 27 km away

The first 60 of 193.

Before

  1. 2.010km NE of Aguanga, CA · 16620 days ago · 3 km deep · 29 km away
  2. 1.713km W of Niland, CA · 16620 days ago · 5 km deep · 80 km away
  3. 1.710km SSW of Ocotillo, CA · 16620 days ago · 9 km deep · 98 km away
  4. 3.413km W of Anza, CA · 16620 days ago · 11 km deep · 34 km away
  5. 1.78km W of Anza, CA · 16621 days ago · 5 km deep · 28 km away
  6. 1.620km E of Anza, CA · 16621 days ago · 5 km deep · 8 km away
  7. 2.122km NE of Indio, CA · 16621 days ago · 5 km deep · 59 km away
  8. 1.84km NE of Ocotillo Wells, CA · 16622 days ago · 5 km deep · 48 km away
  9. 2.013km NE of Coachella, CA · 16623 days ago · 5 km deep · 50 km away
  10. 2.09km SW of Anza, CA · 16624 days ago · 4 km deep · 26 km away
  11. 1.523km SSW of La Quinta, CA · 16624 days ago · 11 km deep · 5 km away
  12. 1.713km ENE of Borrego Springs, CA · 16624 days ago · 7 km deep · 26 km away
  13. 1.98km NE of Aguanga, CA · 16625 days ago · 5 km deep · 31 km away
  14. 2.912km N of Thousand Palms, CA · 16625 days ago · 3 km deep · 53 km away
  15. 1.527km E of Twentynine Palms, CA · 16625 days ago · 5 km deep · 98 km away
  16. 1.812km WSW of Morongo Valley, CA · 16625 days ago · 15 km deep · 64 km away
  17. 1.514km WNW of Anza, CA · 16627 days ago · 12 km deep · 34 km away
  18. 1.611km S of Joshua Tree, CA · 16627 days ago · 5 km deep · 66 km away
  19. 2.022km ESE of Anza, CA · 16627 days ago · 5 km deep · 5 km away
  20. 1.59km WSW of Garnet, CA · 16628 days ago · 14 km deep · 47 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci516450. Read Fri, Oct 2, 2026, 7:40 AM UTC.