California earthquakes

M1.6 earthquake 11km SW of Anza, CA

A magnitude 1.6 earthquake struck 11km SW of Anza, CA on Sat, Oct 17, 1981, 6:16 PM PDT (01:16 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.2 9km ENE of Aguanga, 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
1.6 (mc), micro
Local time
UTC
1981-10-18 01:16:41 UTC
Depth
2.7 km (1.7 mi), shallow
Epicenter
33.500° N, 116.766° 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, 0.7 km in depth
Depth from
From location
Station coverage gap
49°
Stations used
38

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 129 in the 60 days after this one and 33 in the 30 days before it.

After

  1. 2.29km ENE of Aguanga, CA · 16410 days ago · 2 km deep · 3 km away
  2. 2.013km SE of Anza, CA · 16410 days ago · 7 km deep · 18 km away
  3. 1.625km ENE of Pine Valley, CA · 16410 days ago · 6 km deep · 76 km away
  4. 1.69km SW of Idyllwild, CA · 16410 days ago · 13 km deep · 22 km away
  5. 2.317km NW of Yucca Valley, CA · 16410 days ago · 8 km deep · 82 km away
  6. 3.024km N of Yucca Valley, CA · 16410 days ago · 1 km deep · 97 km away
  7. 1.624km N of Yucca Valley, CA · 16409 days ago · 1 km deep · 97 km away
  8. 3.021km ESE of Anza, CA · 16409 days ago · 9 km deep · 29 km away
  9. 1.99km ENE of Aguanga, CA · 16409 days ago · 4 km deep · 2 km away
  10. 2.221km ESE of Anza, CA · 16409 days ago · 11 km deep · 28 km away
  11. 3.310km NE of Aguanga, CA · 16408 days ago · 6 km deep · 1 km away
  12. 1.89km SE of Valle Vista, CA · 16408 days ago · 16 km deep · 23 km away
  13. 1.79km SE of Big Bear City, CA · 16407 days ago · 8 km deep · 78 km away
  14. 1.64km WNW of Lake Arrowhead, CA · 16407 days ago · 3 km deep · 95 km away
  15. 2.56km SSW of Redlands, CA · 16406 days ago · 12 km deep · 68 km away
  16. 1.70km WNW of Muscoy, CA · 16406 days ago · 2 km deep · 91 km away
  17. 2.016km E of Desert Hot Springs, CA · 16406 days ago · -1 km deep · 66 km away
  18. 1.78km NNE of Cabazon, CA · 16405 days ago · 16 km deep · 53 km away
  19. 2.314km SSW of Borrego Springs, CA · 16405 days ago · 8 km deep · 50 km away
  20. 2.122km ESE of Anza, CA · 16405 days ago · 6 km deep · 29 km away
  21. 2.211km NNE of Aguanga, CA · 16403 days ago · 5 km deep · 5 km away
  22. 2.916km NNE of Borrego Springs, CA · 16402 days ago · 14 km deep · 45 km away
  23. 2.014km NE of Thousand Palms, CA · 16402 days ago · 6 km deep · 64 km away
  24. 1.523km ESE of Anza, CA · 16401 days ago · 10 km deep · 30 km away
  25. 1.72km ESE of Loma Linda, CA · 16401 days ago · 17 km deep · 75 km away
  26. 1.610km ENE of Aguanga, CA · 16400 days ago · 4 km deep · 1 km away
  27. 1.912km SE of Anza, CA · 16400 days ago · 4 km deep · 16 km away
  28. 1.98km SW of La Jolla, CA · 16399 days ago · 6 km deep · 94 km away
  29. 1.621km N of Yucca Valley, CA · 16399 days ago · 0 km deep · 93 km away
  30. 2.111km SW of Salton City, CA · 16398 days ago · 6 km deep · 73 km away
  31. 2.24km SE of Rancho Cucamonga, CA · 16398 days ago · 12 km deep · 99 km away
  32. 1.513km SSW of Borrego Springs, CA · 16398 days ago · 6 km deep · 48 km away
  33. 2.69km ENE of Aguanga, CA · 16398 days ago · 4 km deep · 2 km away
  34. 1.99km ENE of Aguanga, CA · 16397 days ago · 4 km deep · 2 km away
  35. 1.75km N of Big Bear City, CA · 16396 days ago · 0 km deep · 90 km away
  36. 1.523km SSW of Ocotillo Wells, CA · 16395 days ago · 5 km deep · 77 km away
  37. 1.511km NNE of Borrego Springs, CA · 16395 days ago · 11 km deep · 43 km away
  38. 1.88km NNE of San Jacinto, CA · 16395 days ago · 12 km deep · 41 km away
  39. 1.510km WSW of Anza, CA · 16395 days ago · 4 km deep · 1 km away
  40. 1.56km NNW of Ocotillo Wells, CA · 16392 days ago · 8 km deep · 66 km away
  41. 1.68km NNW of Big Bear City, CA · 16392 days ago · 9 km deep · 92 km away
  42. 1.511km WNW of Camp Pendleton South, CA · 16392 days ago · 5 km deep · 72 km away
  43. 1.612km WNW of Camp Pendleton South, CA · 16392 days ago · 5 km deep · 74 km away
  44. 1.612km WNW of Camp Pendleton South, CA · 16392 days ago · 5 km deep · 73 km away
  45. 1.712km W of Camp Pendleton South, CA · 16392 days ago · 5 km deep · 74 km away
  46. 1.522km N of Yucca Valley, CA · 16391 days ago · 3 km deep · 94 km away
  47. 1.813km WNW of Camp Pendleton South, CA · 16391 days ago · 5 km deep · 74 km away
  48. 1.512km WNW of Camp Pendleton South, CA · 16391 days ago · 8 km deep · 74 km away
  49. 2.814km WNW of Camp Pendleton South, CA · 16391 days ago · 6 km deep · 75 km away
  50. 1.813km WNW of Camp Pendleton South, CA · 16391 days ago · 5 km deep · 74 km away
  51. 1.613km WNW of Camp Pendleton South, CA · 16391 days ago · 5 km deep · 75 km away
  52. 1.528km ENE of Pine Valley, CA · 16391 days ago · 5 km deep · 81 km away
  53. 1.512km WNW of Camp Pendleton South, CA · 16390 days ago · 14 km deep · 73 km away
  54. 1.622km N of Yucca Valley, CA · 16390 days ago · 0 km deep · 94 km away
  55. 1.712km N of Banning, CA · 16390 days ago · 15 km deep · 59 km away
  56. 1.813km WNW of Camp Pendleton South, CA · 16390 days ago · 7 km deep · 75 km away
  57. 1.613km WNW of Camp Pendleton South, CA · 16389 days ago · 10 km deep · 75 km away
  58. 2.614km WNW of Camp Pendleton South, CA · 16389 days ago · 6 km deep · 75 km away
  59. 1.70km W of Julian, CA · 16389 days ago · 15 km deep · 49 km away
  60. 1.615km N of Borrego Springs, CA · 16388 days ago · 2 km deep · 39 km away

The first 60 of 129.

Before

  1. 1.73km SSW of San Bernardino, CA · 16411 days ago · 3 km deep · 84 km away
  2. 2.112km NE of Ocotillo Wells, CA · 16411 days ago · 7 km deep · 72 km away
  3. 2.112km NE of Ocotillo Wells, CA · 16412 days ago · 4 km deep · 73 km away
  4. 1.612km SW of Salton City, CA · 16412 days ago · 6 km deep · 73 km away
  5. 1.811km SW of Salton City, CA · 16412 days ago · 5 km deep · 73 km away
  6. 1.712km NE of Ocotillo Wells, CA · 16412 days ago · 5 km deep · 73 km away
  7. 3.112km NNE of Ocotillo Wells, CA · 16412 days ago · 5 km deep · 72 km away
  8. 2.212km NE of Ocotillo Wells, CA · 16412 days ago · 6 km deep · 72 km away
  9. 2.011km NNE of Ocotillo Wells, CA · 16412 days ago · 5 km deep · 71 km away
  10. 2.112km NE of Ocotillo Wells, CA · 16412 days ago · 5 km deep · 75 km away
  11. 1.712km NNE of Ocotillo Wells, CA · 16412 days ago · 3 km deep · 72 km away
  12. 3.712km SW of Salton City, CA · 16412 days ago · 15 km deep · 73 km away
  13. 2.012km SW of Salton City, CA · 16412 days ago · 5 km deep · 73 km away
  14. 1.812km NE of Ocotillo Wells, CA · 16412 days ago · 5 km deep · 73 km away
  15. 2.33km S of San Bernardino, CA · 16412 days ago · 3 km deep · 83 km away
  16. 1.53km S of San Bernardino, CA · 16412 days ago · 3 km deep · 83 km away
  17. 1.823km NNW of Joshua Tree, CA · 16412 days ago · -1 km deep · 99 km away
  18. 1.64km NNE of Cabazon, CA · 16412 days ago · 16 km deep · 50 km away
  19. 1.511km W of Anza, CA · 16412 days ago · 2 km deep · 5 km away
  20. 1.55km SE of Ontario, CA · 16413 days ago · 5 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci525708. Read Wed, Sep 23, 2026, 9:34 AM UTC.