California earthquakes

M1.6 earthquake 20km E of Anza, CA

A magnitude 1.6 earthquake struck 20km E of Anza, CA on Tue, Mar 31, 1981, 12:38 AM PST (08:38 UTC), 5 km (3 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.6 (Mh), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1981-03-31 08:38:47 UTC
Depth
5.2 km (3.2 mi), shallow
Epicenter
33.533° N, 116.460° 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 1.3 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.30
Depth from
Operator assigned
Station coverage gap
137°
Stations used
4

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 106 in the 30 days before it.

After

  1. 1.78km W of Anza, CA · 16624 days ago · 5 km deep · 27 km away
  2. 3.413km W of Anza, CA · 16623 days ago · 11 km deep · 33 km away
  3. 1.713km W of Niland, CA · 16623 days ago · 5 km deep · 82 km away
  4. 2.010km NE of Aguanga, CA · 16623 days ago · 3 km deep · 30 km away
  5. 1.621km ESE of Anza, CA · 16622 days ago · 11 km deep · 8 km away
  6. 2.010km NE of Aguanga, CA · 16622 days ago · 3 km deep · 29 km away
  7. 1.511km WSW of Anza, CA · 16622 days ago · 3 km deep · 29 km away
  8. 2.410km NE of Aguanga, CA · 16622 days ago · 3 km deep · 29 km away
  9. 2.134km N of Yucca Valley, CA · 16620 days ago · -1 km deep · 98 km away
  10. 1.610km NE of Aguanga, CA · 16619 days ago · -1 km deep · 30 km away
  11. 1.711km WSW of Anza, CA · 16619 days ago · -1 km deep · 29 km away
  12. 1.61km WNW of Niland, CA · 16619 days ago · 3 km deep · 92 km away
  13. 1.76km NW of San Jacinto, CA · 16618 days ago · 13 km deep · 60 km away
  14. 1.713km E of Borrego Springs, CA · 16618 days ago · 4 km deep · 38 km away
  15. 1.66km SSW of Niland, CA · 16618 days ago · 5 km deep · 93 km away
  16. 1.61km S of Niland, CA · 16618 days ago · 2 km deep · 94 km away
  17. 1.63km S of Niland, CA · 16618 days ago · 8 km deep · 95 km away
  18. 1.63km SSW of Niland, CA · 16618 days ago · 5 km deep · 93 km away
  19. 2.33km SW of Niland, CA · 16618 days ago · 11 km deep · 92 km away
  20. 1.63km SSW of Niland, CA · 16618 days ago · 5 km deep · 93 km away
  21. 1.63km SSW of Niland, CA · 16618 days ago · 2 km deep · 94 km away
  22. 1.96km SSW of Salton City, CA · 16617 days ago · 5 km deep · 54 km away
  23. 3.123km ENE of Pine Valley, CA · 16617 days ago · 14 km deep · 69 km away
  24. 1.724km N of Yucca Valley, CA · 16617 days ago · 0 km deep · 88 km away
  25. 2.47km NE of Cabazon, CA · 16617 days ago · 16 km deep · 55 km away
  26. 1.510km NNE of Borrego Springs, CA · 16616 days ago · 11 km deep · 24 km away
  27. 2.031km WNW of Desert Center, CA · 16616 days ago · -1 km deep · 78 km away
  28. 1.624km NNW of Yucca Valley, CA · 16616 days ago · 0 km deep · 87 km away
  29. 1.68km NE of Aguanga, CA · 16616 days ago · 4 km deep · 32 km away
  30. 1.510km NE of Aguanga, CA · 16616 days ago · 1 km deep · 30 km away
  31. 1.510km N of Borrego Springs, CA · 16616 days ago · 10 km deep · 23 km away
  32. 1.611km N of Borrego Springs, CA · 16616 days ago · 10 km deep · 22 km away
  33. 1.810km NE of Aguanga, CA · 16616 days ago · 3 km deep · 30 km away
  34. 2.47km NE of Aguanga, CA · 16615 days ago · 4 km deep · 33 km away
  35. 1.613km WNW of Anza, CA · 16615 days ago · 11 km deep · 33 km away
  36. 1.711km NE of Aguanga, CA · 16615 days ago · 4 km deep · 30 km away
  37. 1.69km NNE of Pala, CA · 16615 days ago · 5 km deep · 56 km away
  38. 2.222km ENE of Pine Valley, CA · 16615 days ago · 15 km deep · 70 km away
  39. 1.511km NE of Aguanga, CA · 16614 days ago · 4 km deep · 29 km away
  40. 2.28km SSW of Salton City, CA · 16614 days ago · 5 km deep · 54 km away
  41. 1.611km WSW of Anza, CA · 16614 days ago · 4 km deep · 29 km away
  42. 1.66km NW of Aguanga, CA · 16614 days ago · 11 km deep · 42 km away
  43. 1.719km SSE of Joshua Tree, CA · 16613 days ago · -1 km deep · 53 km away
  44. 1.810km N of Indio, CA · 16613 days ago · 5 km deep · 39 km away
  45. 1.98km SSE of Idyllwild, CA · 16613 days ago · 16 km deep · 27 km away
  46. 1.710km NE of Aguanga, CA · 16613 days ago · 4 km deep · 30 km away
  47. 1.719km SSE of Joshua Tree, CA · 16612 days ago · -1 km deep · 53 km away
  48. 1.712km SSE of Twentynine Palms, CA · 16612 days ago · 2 km deep · 69 km away
  49. 1.79km SE of Bombay Beach, CA · 16612 days ago · 8 km deep · 78 km away
  50. 1.516km NNE of Borrego Springs, CA · 16612 days ago · 8 km deep · 24 km away
  51. 2.219km SSW of Ocotillo Wells, CA · 16611 days ago · 4 km deep · 64 km away
  52. 1.56km ENE of North Shore, CA · 16611 days ago · 8 km deep · 54 km away
  53. 1.711km ESE of Anza, CA · 16611 days ago · 8 km deep · 9 km away
  54. 1.618km SSW of Ocotillo Wells, CA · 16611 days ago · 5 km deep · 64 km away
  55. 1.910km NE of Aguanga, CA · 16610 days ago · 4 km deep · 30 km away
  56. 1.68km NNE of Banning, CA · 16610 days ago · 17 km deep · 63 km away
  57. 2.016km E of Big Bear City, CA · 16609 days ago · 5 km deep · 81 km away
  58. 2.310km NE of Ocotillo Wells, CA · 16609 days ago · 12 km deep · 54 km away
  59. 1.610km NE of Aguanga, CA · 16609 days ago · 4 km deep · 30 km away
  60. 1.99km NNW of Anza, CA · 16608 days ago · 9 km deep · 25 km away

The first 60 of 185.

Before

  1. 2.122km NE of Indio, CA · 16624 days ago · 5 km deep · 52 km away
  2. 1.84km NE of Ocotillo Wells, CA · 16625 days ago · 5 km deep · 53 km away
  3. 2.013km NE of Coachella, CA · 16626 days ago · 5 km deep · 43 km away
  4. 2.09km SW of Anza, CA · 16626 days ago · 4 km deep · 27 km away
  5. 1.523km SSW of La Quinta, CA · 16627 days ago · 11 km deep · 7 km away
  6. 1.713km ENE of Borrego Springs, CA · 16627 days ago · 7 km deep · 31 km away
  7. 1.83km SSE of San Bernardino, CA · 16627 days ago · 5 km deep · 99 km away
  8. 1.98km NE of Aguanga, CA · 16628 days ago · 5 km deep · 32 km away
  9. 2.912km N of Thousand Palms, CA · 16628 days ago · 3 km deep · 45 km away
  10. 1.527km E of Twentynine Palms, CA · 16628 days ago · 5 km deep · 91 km away
  11. 1.812km WSW of Morongo Valley, CA · 16628 days ago · 15 km deep · 57 km away
  12. 1.75km ENE of Running Springs, CA · 16628 days ago · 11 km deep · 95 km away
  13. 1.62km NW of Loma Linda, CA · 16630 days ago · 4 km deep · 96 km away
  14. 1.514km WNW of Anza, CA · 16630 days ago · 12 km deep · 34 km away
  15. 1.611km S of Joshua Tree, CA · 16630 days ago · 5 km deep · 58 km away
  16. 2.022km ESE of Anza, CA · 16630 days ago · 5 km deep · 4 km away
  17. 1.59km WSW of Garnet, CA · 16630 days ago · 14 km deep · 40 km away
  18. 1.714km SE of Anza, CA · 16631 days ago · 11 km deep · 13 km away
  19. 1.525km SSE of Twentynine Palms, CA · 16631 days ago · 5 km deep · 60 km away
  20. 1.525km SSE of Twentynine Palms, CA · 16631 days ago · 5 km deep · 61 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci12263091. Read Mon, Oct 5, 2026, 3:55 AM UTC.