M1.6 earthquake 11km WSW of Anza, CA

Magnitude

1.6 (Mc), micro

Magnitude from

Southern California Seismic Network

Local time

Sun, Aug 23, 1981, 11:30 AM PDT

UTC

1981-08-23 18:30:43 UTC

Depth

3.8 km (2.4 mi), shallow

Epicenter

33.514° N, 116.778° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 1.0 km in depth

Depth from

From location

Station coverage gap

82°

Stations used

30

• Anza, CaliforniaPopulation 3,014. Forecast11 kmWSW
• Valle Vista, CaliforniaPopulation 14,578. Forecast28 kmSSE
• Temecula, CaliforniaPopulation 110,003. Forecast34 kmE
• San Diego, CaliforniaPopulation 1,404,452. Forecast96 kmNNE

After

1. 1.66km SSW of Salton City, CASun, Aug 23, 4:33 PM PDT · 16474 days ago · 1 km deep · 80 km away
2. 2.02km ESE of Loma Linda, CASun, Aug 23, 9:55 PM PDT · 16474 days ago · 9 km deep · 72 km away
3. 1.834km NNE of North Shore, CAMon, Aug 24, 1:28 PM PDT · 16474 days ago · 5 km deep · 98 km away
4. 1.54km SSE of San Juan Capistrano, CATue, Aug 25, 12:25 AM PDT · 16473 days ago · 12 km deep · 81 km away
5. 1.76km S of Idyllwild, CATue, Aug 25, 7:35 AM PDT · 16473 days ago · 14 km deep · 20 km away
6. 1.613km ESE of North Shore, CATue, Aug 25, 1:57 PM PDT · 16473 days ago · 8 km deep · 90 km away
7. 1.76km SW of Salton City, CATue, Aug 25, 4:01 PM PDT · 16472 days ago · 4 km deep · 78 km away
8. 2.07km SSW of Salton City, CATue, Aug 25, 6:54 PM PDT · 16472 days ago · 3 km deep · 80 km away
9. 1.65km SSE of Murrieta, CATue, Aug 25, 7:15 PM PDT · 16472 days ago · 4 km deep · 39 km away
10. 2.76km SSW of Salton City, CATue, Aug 25, 11:41 PM PDT · 16472 days ago · 3 km deep · 80 km away
11. 1.66km S of Salton City, CAWed, Aug 26, 1:51 AM PDT · 16472 days ago · 3 km deep · 81 km away
12. 1.533km NNE of North Shore, CAWed, Aug 26, 11:25 AM PDT · 16472 days ago · 4 km deep · 97 km away
13. 1.534km NNE of North Shore, CAWed, Aug 26, 11:38 AM PDT · 16472 days ago · 5 km deep · 98 km away
14. 1.82km NE of Ocotillo Wells, CAWed, Aug 26, 12:11 PM PDT · 16472 days ago · 9 km deep · 74 km away
15. 1.734km NNE of North Shore, CAWed, Aug 26, 12:33 PM PDT · 16472 days ago · 2 km deep · 98 km away
16. 1.78km SSW of Salton City, CAThu, Aug 27, 5:03 AM PDT · 16471 days ago · 3 km deep · 81 km away
17. 2.01km SE of Murrieta, CAThu, Aug 27, 11:30 AM PDT · 16471 days ago · 11 km deep · 40 km away
18. 1.612km NE of Thousand Palms, CAThu, Aug 27, 1:04 PM PDT · 16471 days ago · 5 km deep · 61 km away
19. 1.68km ENE of Aguanga, CAThu, Aug 27, 2:46 PM PDT · 16471 days ago · 5 km deep · 4 km away
20. 2.27km SSW of Salton City, CAFri, Aug 28, 12:24 AM PDT · 16470 days ago · 3 km deep · 81 km away
21. 2.26km SSW of Salton City, CAFri, Aug 28, 12:25 AM PDT · 16470 days ago · 4 km deep · 80 km away
22. 2.57km SSW of Salton City, CAFri, Aug 28, 12:32 AM PDT · 16470 days ago · 3 km deep · 81 km away
23. 2.47km S of Salton City, CAFri, Aug 28, 12:36 AM PDT · 16470 days ago · 3 km deep · 81 km away
24. 1.76km SSW of Salton City, CAFri, Aug 28, 12:50 AM PDT · 16470 days ago · 3 km deep · 81 km away
25. 1.510km NE of Aguanga, CAFri, Aug 28, 8:02 AM PDT · 16470 days ago · 3 km deep · 2 km away
26. 2.519km N of Yucca Valley, CAFri, Aug 28, 4:49 PM PDT · 16469 days ago · -1 km deep · 91 km away
27. 2.06km NNE of Cabazon, CAFri, Aug 28, 10:49 PM PDT · 16469 days ago · 6 km deep · 50 km away
28. 2.56km SSW of Salton City, CASat, Aug 29, 2:41 AM PDT · 16469 days ago · 5 km deep · 81 km away
29. 1.81km SSW of Murrieta, CASat, Aug 29, 7:14 AM PDT · 16469 days ago · 11 km deep · 41 km away
30. 3.08km NNW of Lake Henshaw, CASat, Aug 29, 2:57 PM PDT · 16469 days ago · 8 km deep · 22 km away
31. 1.57km SSW of Salton City, CASat, Aug 29, 4:57 PM PDT · 16468 days ago · 5 km deep · 81 km away
32. 1.58km S of Salton City, CASun, Aug 30, 12:03 AM PDT · 16468 days ago · 4 km deep · 82 km away
33. 1.86km SSW of Salton City, CASun, Aug 30, 12:42 AM PDT · 16468 days ago · 3 km deep · 80 km away
34. 1.87km S of Salton City, CASun, Aug 30, 1:14 AM PDT · 16468 days ago · 0 km deep · 84 km away
35. 1.69km S of Salton City, CASun, Aug 30, 9:10 PM PDT · 16467 days ago · 1 km deep · 82 km away
36. 2.46km WSW of Devore, CASun, Aug 30, 9:17 PM PDT · 16467 days ago · 5 km deep · 100 km away
37. 1.75km SSW of Salton City, CASun, Aug 30, 10:49 PM PDT · 16467 days ago · 4 km deep · 80 km away
38. 1.77km S of Salton City, CAMon, Aug 31, 1:31 AM PDT · 16467 days ago · 3 km deep · 81 km away
39. 1.87km S of Salton City, CAMon, Aug 31, 3:53 AM PDT · 16467 days ago · 2 km deep · 82 km away
40. 1.811km NE of Aguanga, CATue, Sep 1, 7:05 AM PDT · 16466 days ago · 4 km deep · 1 km away
41. 1.64km SW of Banning, CATue, Sep 1, 9:56 PM PDT · 16465 days ago · 12 km deep · 44 km away
42. 1.55km SSW of Salton City, CAWed, Sep 2, 12:09 AM PDT · 16465 days ago · 3 km deep · 80 km away
43. 1.614km SSW of Borrego Springs, CAWed, Sep 2, 3:18 AM PDT · 16465 days ago · 8 km deep · 52 km away
44. 1.59km NNW of Warner Springs, CAWed, Sep 2, 7:07 AM PDT · 16465 days ago · 9 km deep · 20 km away
45. 1.716km N of Borrego Springs, CAWed, Sep 2, 8:55 AM PDT · 16465 days ago · 4 km deep · 40 km away
46. 3.04km ESE of Palomar Observatory, CAWed, Sep 2, 4:50 PM PDT · 16464 days ago · 6 km deep · 20 km away
47. 1.54km E of Palomar Observatory, CAWed, Sep 2, 5:30 PM PDT · 16464 days ago · 6 km deep · 17 km away
48. 1.533km NNE of North Shore, CAWed, Sep 2, 10:30 PM PDT · 16464 days ago · 7 km deep · 97 km away
49. 1.522km ESE of Anza, CAThu, Sep 3, 9:22 AM PDT · 16464 days ago · 10 km deep · 30 km away
50. 4.08km NE of Julian, CAThu, Sep 3, 5:28 PM PDT · 16463 days ago · 18 km deep · 47 km away
51. 2.410km NNE of Julian, CAThu, Sep 3, 5:30 PM PDT · 16463 days ago · 13 km deep · 44 km away
52. 1.89km NNE of Julian, CAThu, Sep 3, 5:31 PM PDT · 16463 days ago · 16 km deep · 45 km away
53. 1.710km NNE of Julian, CAThu, Sep 3, 5:33 PM PDT · 16463 days ago · 15 km deep · 45 km away
54. 1.59km NNE of Julian, CAThu, Sep 3, 5:34 PM PDT · 16463 days ago · 3 km deep · 45 km away
55. 2.58km NNE of Julian, CAThu, Sep 3, 5:34 PM PDT · 16463 days ago · 12 km deep · 46 km away
56. 1.58km NNE of Julian, CAThu, Sep 3, 5:34 PM PDT · 16463 days ago · 14 km deep · 44 km away
57. 1.59km NNE of Julian, CAThu, Sep 3, 5:35 PM PDT · 16463 days ago · 19 km deep · 45 km away
58. 1.78km NNE of Julian, CAThu, Sep 3, 5:36 PM PDT · 16463 days ago · 16 km deep · 45 km away
59. 1.87km NNE of Julian, CAThu, Sep 3, 5:38 PM PDT · 16463 days ago · 12 km deep · 46 km away
60. 3.78km NE of Julian, CAThu, Sep 3, 5:39 PM PDT · 16463 days ago · 18 km deep · 47 km away

The first 60 of 185.

Before

1. 1.76km SSW of Salton City, CASun, Aug 23, 5:06 AM PDT · 16475 days ago · 1 km deep · 80 km away
2. 2.04km SSW of Salton City, CASun, Aug 23, 12:41 AM PDT · 16475 days ago · 5 km deep · 80 km away
3. 2.46km SSW of Salton City, CASat, Aug 22, 11:43 PM PDT · 16475 days ago · 3 km deep · 80 km away
4. 2.110km NNE of Borrego Springs, CASat, Aug 22, 8:44 PM PDT · 16475 days ago · 13 km deep · 46 km away
5. 1.56km SSW of Salton City, CASat, Aug 22, 4:53 PM PDT · 16475 days ago · 1 km deep · 79 km away
6. 1.834km NNE of North Shore, CASat, Aug 22, 1:49 PM PDT · 16476 days ago · 3 km deep · 98 km away
7. 1.96km SSW of Salton City, CASat, Aug 22, 11:20 AM PDT · 16476 days ago · 3 km deep · 80 km away
8. 1.511km SW of Anza, CASat, Aug 22, 6:24 AM PDT · 16476 days ago · 3 km deep · 2 km away
9. 1.54km ENE of Ocotillo Wells, CASat, Aug 22, 12:35 AM PDT · 16476 days ago · 11 km deep · 75 km away
10. 1.810km N of Cabazon, CAFri, Aug 21, 5:41 AM PDT · 16477 days ago · 15 km deep · 54 km away
11. 1.813km NE of Thousand Palms, CAThu, Aug 20, 10:10 PM PDT · 16477 days ago · 7 km deep · 63 km away
12. 2.010km WSW of Anza, CAThu, Aug 20, 3:40 PM PDT · 16478 days ago · 3 km deep · 1 km away
13. 1.523km ESE of Ocotillo Wells, CAThu, Aug 20, 2:13 PM PDT · 16478 days ago · 4 km deep · 96 km away
14. 1.66km WSW of Beaumont, CAThu, Aug 20, 9:05 AM PDT · 16478 days ago · 11 km deep · 49 km away
15. 2.14km ESE of Highland, CAThu, Aug 20, 1:08 AM PDT · 16478 days ago · 6 km deep · 75 km away
16. 2.54km SE of Highland, CAWed, Aug 19, 11:39 PM PDT · 16478 days ago · 7 km deep · 76 km away
17. 2.410km ENE of Aguanga, CAWed, Aug 19, 8:18 PM PDT · 16478 days ago · 4 km deep · 3 km away
18. 2.82km SE of Murrieta, CAWed, Aug 19, 5:02 AM PDT · 16479 days ago · 5 km deep · 39 km away
19. 1.94km SSE of Yucca Valley, CATue, Aug 18, 9:58 AM PDT · 16480 days ago · 7 km deep · 71 km away
20. 2.514km N of Borrego Springs, CATue, Aug 18, 9:17 AM PDT · 16480 days ago · 12 km deep · 40 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci521626. Read Thu, Oct 1, 2026, 10:14 AM UTC.