M1.6 earthquake 13km ESE of Anza, CA

Magnitude

1.6 (Mh), micro

Magnitude from

Southern California Seismic Network

Local time

Wed, Sep 21, 1983, 3:08 PM PDT

UTC

1983-09-21 22:08:18 UTC

Depth

13.3 km (8.2 mi), shallow

Epicenter

33.529° N, 116.541° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 0.8 km in depth

Depth from

From location

Station coverage gap

67°

Stations used

14

• Anza, CaliforniaPopulation 3,014. Forecast13 kmESE
• La Quinta, CaliforniaPopulation 40,476. Forecast26 kmSW
• Temecula, CaliforniaPopulation 110,003. Forecast56 kmE
• San Diego, CaliforniaPopulation 1,404,452. Forecast107 kmNNE

After

1. 1.59km S of Bombay Beach, CAWed, Sep 21, 10:18 PM PDT · 15719 days ago · 1 km deep · 82 km away
2. 1.77km SW of Idyllwild, CAFri, Sep 23, 3:42 AM PDT · 15718 days ago · 18 km deep · 27 km away
3. 2.08km SE of Ocotillo Wells, CAFri, Sep 23, 5:18 AM PDT · 15717 days ago · 11 km deep · 65 km away
4. 1.82km S of Redlands, CAFri, Sep 23, 11:18 AM PDT · 15717 days ago · -1 km deep · 82 km away
5. 1.82km NE of Julian, CAFri, Sep 23, 8:28 PM PDT · 15717 days ago · 16 km deep · 49 km away
6. 1.72km SE of Redlands, CAFri, Sep 23, 10:51 PM PDT · 15717 days ago · 11 km deep · 81 km away
7. 1.82km NNE of Colton, CASat, Sep 24, 2:01 AM PDT · 15717 days ago · 16 km deep · 95 km away
8. 1.520km NNW of Borrego Springs, CASat, Sep 24, 3:37 AM PDT · 15717 days ago · 11 km deep · 14 km away
9. 2.218km SW of Ocotillo Wells, CASat, Sep 24, 9:32 AM PDT · 15716 days ago · 6 km deep · 64 km away
10. 2.02km ESE of Redlands, CASat, Sep 24, 11:16 AM PDT · 15716 days ago · 11 km deep · 82 km away
11. 1.93km E of Colton, CASun, Sep 25, 7:20 PM PDT · 15715 days ago · 13 km deep · 91 km away
12. 1.68km WNW of Idyllwild, CASun, Sep 25, 7:25 PM PDT · 15715 days ago · 12 km deep · 37 km away
13. 1.82km SSE of Redlands, CASun, Sep 25, 10:21 PM PDT · 15715 days ago · 4 km deep · 81 km away
14. 1.93km NNW of Colton, CAMon, Sep 26, 12:26 AM PDT · 15715 days ago · 4 km deep · 96 km away
15. 1.92km NNW of Colton, CAMon, Sep 26, 1:30 AM PDT · 15715 days ago · 5 km deep · 96 km away
16. 2.22km NNW of Colton, CAMon, Sep 26, 4:50 AM PDT · 15714 days ago · 8 km deep · 96 km away
17. 1.81km NNW of Valle Vista, CAMon, Sep 26, 5:58 AM PDT · 15714 days ago · 12 km deep · 42 km away
18. 2.37km NE of Nuevo, CAMon, Sep 26, 6:59 AM PDT · 15714 days ago · 13 km deep · 61 km away
19. 1.92km N of Colton, CAMon, Sep 26, 7:11 AM PDT · 15714 days ago · 7 km deep · 95 km away
20. 2.22km NNW of Colton, CAMon, Sep 26, 7:44 AM PDT · 15714 days ago · 5 km deep · 96 km away
21. 1.68km NNW of Cabazon, CATue, Sep 27, 1:34 AM PDT · 15714 days ago · 11 km deep · 57 km away
22. 1.630km WNW of Desert Center, CATue, Sep 27, 2:46 AM PDT · 15714 days ago · 13 km deep · 81 km away
23. 2.49km SE of Running Springs, CATue, Sep 27, 12:44 PM PDT · 15713 days ago · 12 km deep · 83 km away
24. 1.72km NNE of Anza, CATue, Sep 27, 11:46 PM PDT · 15713 days ago · 10 km deep · 12 km away
25. 1.66km E of Running Springs, CAWed, Sep 28, 3:55 AM PDT · 15713 days ago · 1 km deep · 90 km away
26. 1.922km SE of Anza, CAWed, Sep 28, 7:10 AM PDT · 15712 days ago · 13 km deep · 12 km away
27. 1.52km S of Loma Linda, CAWed, Sep 28, 12:11 PM PDT · 15712 days ago · 17 km deep · 87 km away
28. 1.712km W of Morongo Valley, CAWed, Sep 28, 2:58 PM PDT · 15712 days ago · 13 km deep · 59 km away
29. 1.814km NNE of Borrego Springs, CAThu, Sep 29, 12:56 AM PDT · 15712 days ago · 10 km deep · 29 km away
30. 1.719km E of Ocotillo Wells, CAThu, Sep 29, 8:07 AM PDT · 15711 days ago · 13 km deep · 72 km away
31. 2.11km SSE of Anza, CAThu, Sep 29, 3:04 PM PDT · 15711 days ago · 8 km deep · 12 km away
32. 1.614km NNE of Borrego Springs, CAFri, Sep 30, 12:39 AM PDT · 15711 days ago · 10 km deep · 28 km away
33. 1.91km ENE of Anza, CAFri, Sep 30, 1:47 AM PDT · 15711 days ago · 11 km deep · 12 km away
34. 1.92km N of Moreno Valley, CAFri, Sep 30, 2:07 AM PDT · 15711 days ago · 14 km deep · 79 km away
35. 2.921km WSW of Westmorland, CAFri, Sep 30, 5:24 AM PDT · 15710 days ago · 7 km deep · 94 km away
36. 2.56km WNW of Aguanga, CASat, Oct 1, 12:31 AM PDT · 15710 days ago · 11 km deep · 36 km away
37. 1.61km NW of Loma Linda, CASat, Oct 1, 3:25 PM PDT · 15709 days ago · 14 km deep · 89 km away
38. 1.63km SE of Highland, CASat, Oct 1, 7:55 PM PDT · 15709 days ago · 6 km deep · 88 km away
39. 2.36km E of Lakeside, CASun, Oct 2, 4:22 AM PDT · 15708 days ago · 5 km deep · 81 km away
40. 1.910km S of Idyllwild, CASun, Oct 2, 6:23 AM PDT · 15708 days ago · 11 km deep · 22 km away
41. 1.51km ESE of Loma Linda, CASun, Oct 2, 7:17 PM PDT · 15708 days ago · 14 km deep · 87 km away
42. 1.53km WNW of Cabazon, CASun, Oct 2, 7:58 PM PDT · 15708 days ago · 8 km deep · 51 km away
43. 1.72km W of Borrego Springs, CASun, Oct 2, 11:12 PM PDT · 15708 days ago · 3 km deep · 33 km away
44. 1.87km S of Morongo Valley, CAMon, Oct 3, 12:22 AM PDT · 15708 days ago · 8 km deep · 51 km away
45. 1.52km S of Banning, CAMon, Oct 3, 3:54 AM PDT · 15708 days ago · 11 km deep · 53 km away
46. 2.020km ESE of Ocotillo Wells, CAMon, Oct 3, 7:38 AM PDT · 15707 days ago · 7 km deep · 76 km away
47. 1.823km NE of Pine Valley, CAMon, Oct 3, 12:44 PM PDT · 15707 days ago · 5 km deep · 69 km away
48. 1.612km WNW of Garnet, CAMon, Oct 3, 3:16 PM PDT · 15707 days ago · 14 km deep · 46 km away
49. 1.523km SSW of Ocotillo Wells, CAMon, Oct 3, 8:12 PM PDT · 15707 days ago · 13 km deep · 72 km away
50. 1.915km N of Yucca Valley, CAMon, Oct 3, 8:31 PM PDT · 15707 days ago · 5 km deep · 81 km away
51. 1.822km WSW of Westmorland, CAMon, Oct 3, 8:50 PM PDT · 15707 days ago · 8 km deep · 91 km away
52. 2.825km NNW of Yucca Valley, CATue, Oct 4, 10:01 AM PDT · 15706 days ago · 1 km deep · 89 km away
53. 1.56km S of Lake Henshaw, CATue, Oct 4, 12:03 PM PDT · 15706 days ago · 10 km deep · 43 km away
54. 2.212km NW of Morongo Valley, CATue, Oct 4, 2:28 PM PDT · 15706 days ago · 9 km deep · 66 km away
55. 1.811km SSW of Ocotillo Wells, CATue, Oct 4, 4:32 PM PDT · 15706 days ago · 8 km deep · 61 km away
56. 1.98km NE of Desert Hot Springs, CATue, Oct 4, 7:39 PM PDT · 15706 days ago · 12 km deep · 55 km away
57. 1.97km E of Running Springs, CAWed, Oct 5, 3:35 AM PDT · 15706 days ago · 10 km deep · 88 km away
58. 2.522km ESE of Anza, CAWed, Oct 5, 11:32 AM PDT · 15705 days ago · 10 km deep · 10 km away
59. 2.26km SW of Beaumont, CAWed, Oct 5, 4:33 PM PDT · 15705 days ago · 13 km deep · 61 km away
60. 1.913km W of Salton City, CAWed, Oct 5, 4:37 PM PDT · 15705 days ago · 1 km deep · 49 km away

The first 60 of 185.

Before

1. 2.211km SSW of Ocotillo Wells, CATue, Sep 20, 10:46 AM PDT · 15720 days ago · 5 km deep · 62 km away
2. 1.510km SW of Ocotillo Wells, CATue, Sep 20, 7:54 AM PDT · 15720 days ago · 6 km deep · 60 km away
3. 2.510km NE of Running Springs, CATue, Sep 20, 7:20 AM PDT · 15720 days ago · 7 km deep · 95 km away
4. 1.911km SSW of Ocotillo Wells, CATue, Sep 20, 6:24 AM PDT · 15720 days ago · 5 km deep · 62 km away
5. 1.711km SSW of Ocotillo Wells, CATue, Sep 20, 3:37 AM PDT · 15721 days ago · 6 km deep · 62 km away
6. 1.91km NNE of Loma Linda, CATue, Sep 20, 2:49 AM PDT · 15721 days ago · 15 km deep · 88 km away
7. 2.03km SSE of Big Bear City, CAMon, Sep 19, 8:51 PM PDT · 15721 days ago · 8 km deep · 83 km away
8. 1.912km SSW of Ocotillo Wells, CAMon, Sep 19, 6:27 PM PDT · 15721 days ago · 5 km deep · 62 km away
9. 3.412km SSW of Ocotillo Wells, CAMon, Sep 19, 5:08 PM PDT · 15721 days ago · 11 km deep · 62 km away
10. 2.06km SSW of North Shore, CAMon, Sep 19, 2:59 PM PDT · 15721 days ago · 5 km deep · 53 km away
11. 2.311km NW of Twentynine Palms, CAMon, Sep 19, 2:50 PM PDT · 15721 days ago · 6 km deep · 82 km away
12. 2.016km SW of Ocotillo Wells, CAMon, Sep 19, 12:13 PM PDT · 15721 days ago · 5 km deep · 62 km away
13. 2.012km SW of Ocotillo Wells, CAMon, Sep 19, 7:05 AM PDT · 15721 days ago · 7 km deep · 61 km away
14. 1.512km SSW of Ocotillo Wells, CAMon, Sep 19, 6:23 AM PDT · 15721 days ago · 5 km deep · 61 km away
15. 2.125km SSW of Ocotillo Wells, CASun, Sep 18, 9:15 PM PDT · 15722 days ago · 2 km deep · 69 km away
16. 2.16km ESE of Yucca Valley, CASun, Sep 18, 6:15 PM PDT · 15722 days ago · 2 km deep · 65 km away
17. 1.512km WSW of Westmorland, CASun, Sep 18, 3:58 PM PDT · 15722 days ago · 13 km deep · 97 km away
18. 1.620km WSW of Westmorland, CASun, Sep 18, 9:14 AM PDT · 15722 days ago · 5 km deep · 89 km away
19. 2.15km NW of Big Bear City, CASun, Sep 18, 5:43 AM PDT · 15722 days ago · 4 km deep · 91 km away
20. 2.113km WNW of Westmorland, CASat, Sep 17, 9:08 AM PDT · 15723 days ago · 6 km deep · 89 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci15028. Read Sun, Oct 4, 2026, 10:31 PM UTC.