M1.6 earthquake 21km ESE of Anza, CA

Magnitude

1.6 (mc), micro

Local time

Mon, Nov 30, 1981, 7:57 PM PST

UTC

1981-12-01 03:57:51 UTC

Depth

6.0 km (3.8 mi), shallow

Epicenter

33.507° N, 116.457° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 1.5 km in depth

Depth from

From location

Station coverage gap

39°

Stations used

33

• Anza, CaliforniaPopulation 3,014. Forecast21 kmESE
• La Quinta, CaliforniaPopulation 40,476. Forecast22 kmSW
• Temecula, CaliforniaPopulation 110,003. Forecast64 kmE
• San Diego, CaliforniaPopulation 1,404,452. Forecast110 kmNE

After

1. 1.511km W of Calipatria, CAMon, Nov 30, 11:04 PM PST · 16366 days ago · 9 km deep · 87 km away
2. 1.811km W of Calipatria, CATue, Dec 1, 4:28 AM PST · 16366 days ago · 11 km deep · 87 km away
3. 1.710km W of Calipatria, CATue, Dec 1, 7:23 AM PST · 16366 days ago · 10 km deep · 88 km away
4. 1.68km W of Calipatria, CATue, Dec 1, 10:14 AM PST · 16366 days ago · 10 km deep · 90 km away
5. 1.611km W of Calipatria, CATue, Dec 1, 5:47 PM PST · 16366 days ago · 10 km deep · 87 km away
6. 2.132km SE of Twentynine Palms, CATue, Dec 1, 9:56 PM PST · 16365 days ago · 9 km deep · 72 km away
7. 2.524km N of Yucca Valley, CAThu, Dec 3, 4:09 PM PST · 16364 days ago · 0 km deep · 91 km away
8. 1.710km NE of Borrego Springs, CAThu, Dec 3, 9:58 PM PST · 16363 days ago · 10 km deep · 24 km away
9. 1.611km S of Idyllwild, CASat, Dec 5, 5:01 AM PST · 16362 days ago · 10 km deep · 30 km away
10. 2.010km NNE of Ocotillo Wells, CASat, Dec 5, 7:56 AM PST · 16362 days ago · 7 km deep · 47 km away
11. 1.711km W of Calipatria, CASat, Dec 5, 3:13 PM PST · 16362 days ago · 11 km deep · 87 km away
12. 1.732km SE of Twentynine Palms, CAMon, Dec 7, 1:15 AM PST · 16360 days ago · 7 km deep · 71 km away
13. 1.824km N of Yucca Valley, CAMon, Dec 7, 9:32 AM PST · 16360 days ago · 2 km deep · 92 km away
14. 1.724km N of Yucca Valley, CAMon, Dec 7, 9:52 AM PST · 16360 days ago · 1 km deep · 91 km away
15. 2.77km NNE of Borrego Springs, CATue, Dec 8, 1:51 PM PST · 16359 days ago · 12 km deep · 24 km away
16. 1.512km NNE of Indio, CAWed, Dec 9, 2:47 AM PST · 16358 days ago · 6 km deep · 44 km away
17. 1.821km N of Yucca Valley, CAWed, Dec 9, 10:14 AM PST · 16358 days ago · 1 km deep · 88 km away
18. 1.59km SE of Bombay Beach, CAWed, Dec 9, 9:17 PM PST · 16358 days ago · 5 km deep · 77 km away
19. 1.67km SW of Yucca Valley, CAThu, Dec 10, 7:43 AM PST · 16357 days ago · 9 km deep · 63 km away
20. 1.810km ENE of Aguanga, CAThu, Dec 10, 8:53 AM PST · 16357 days ago · 3 km deep · 30 km away
21. 1.512km E of Borrego Springs, CAThu, Dec 10, 8:46 PM PST · 16357 days ago · 2 km deep · 35 km away
22. 1.53km NW of Julian, CASat, Dec 12, 10:39 PM PST · 16354 days ago · 15 km deep · 48 km away
23. 1.523km ENE of Pine Valley, CASun, Dec 13, 2:12 AM PST · 16354 days ago · 6 km deep · 65 km away
24. 1.66km WSW of Westmorland, CASun, Dec 13, 8:19 AM PST · 16354 days ago · 8 km deep · 91 km away
25. 1.51km N of Loma Linda, CASun, Dec 13, 1:45 PM PST · 16354 days ago · 14 km deep · 96 km away
26. 1.910km N of Cabazon, CASun, Dec 13, 7:08 PM PST · 16354 days ago · 14 km deep · 63 km away
27. 1.822km ESE of Julian, CASun, Dec 13, 11:39 PM PST · 16353 days ago · 3 km deep · 58 km away
28. 2.319km NNE of Indio, CAMon, Dec 14, 11:14 AM PST · 16353 days ago · 4 km deep · 50 km away
29. 1.718km S of Borrego Springs, CAMon, Dec 14, 6:32 PM PST · 16353 days ago · 7 km deep · 46 km away
30. 2.75km SSW of Salton City, CAMon, Dec 14, 11:24 PM PST · 16352 days ago · 4 km deep · 53 km away
31. 1.917km NNW of Joshua Tree, CAWed, Dec 16, 5:12 PM PST · 16351 days ago · 5 km deep · 86 km away
32. 1.917km NNW of Joshua Tree, CAWed, Dec 16, 6:54 PM PST · 16351 days ago · 3 km deep · 86 km away
33. 2.27km SSW of Calimesa, CAThu, Dec 17, 2:29 AM PST · 16350 days ago · 15 km deep · 74 km away
34. 1.79km SE of Valle Vista, CAThu, Dec 17, 11:20 AM PST · 16350 days ago · 14 km deep · 39 km away
35. 1.620km ESE of Julian, CAFri, Dec 18, 2:47 PM PST · 16349 days ago · 1 km deep · 59 km away
36. 1.535km SE of Twentynine Palms, CASat, Dec 19, 7:04 AM PST · 16348 days ago · 4 km deep · 80 km away
37. 1.727km SSW of Ocotillo Wells, CASat, Dec 19, 7:28 AM PST · 16348 days ago · 5 km deep · 69 km away
38. 1.68km ESE of Anza, CASun, Dec 20, 5:19 AM PST · 16347 days ago · 11 km deep · 13 km away
39. 1.611km NE of Aguanga, CASun, Dec 20, 10:12 AM PST · 16347 days ago · 2 km deep · 30 km away
40. 1.68km SW of Beaumont, CASun, Dec 20, 1:32 PM PST · 16347 days ago · 14 km deep · 69 km away
41. 1.726km SSW of Ocotillo Wells, CASun, Dec 20, 5:10 PM PST · 16347 days ago · 5 km deep · 65 km away
42. 1.610km ENE of Aguanga, CAMon, Dec 21, 2:29 AM PST · 16346 days ago · 3 km deep · 29 km away
43. 1.57km N of Lake Henshaw, CAMon, Dec 21, 4:38 AM PST · 16346 days ago · 15 km deep · 35 km away
44. 2.54km WSW of Morongo Valley, CATue, Dec 22, 12:32 PM PST · 16345 days ago · 8 km deep · 60 km away
45. 1.710km NE of Aguanga, CATue, Dec 22, 3:54 PM PST · 16345 days ago · 4 km deep · 29 km away
46. 2.511km N of Borrego Springs, CATue, Dec 22, 10:17 PM PST · 16344 days ago · 10 km deep · 20 km away
47. 1.611km SE of Bombay Beach, CAWed, Dec 23, 1:54 AM PST · 16344 days ago · 2 km deep · 79 km away
48. 1.714km SE of Anza, CAWed, Dec 23, 2:47 PM PST · 16344 days ago · 10 km deep · 11 km away
49. 2.210km N of Cabazon, CAWed, Dec 23, 6:21 PM PST · 16344 days ago · 16 km deep · 63 km away
50. 3.110km N of Cabazon, CAWed, Dec 23, 6:22 PM PST · 16344 days ago · 18 km deep · 63 km away
51. 1.811km WNW of Westmorland, CAThu, Dec 24, 2:22 PM PST · 16343 days ago · 7 km deep · 83 km away
52. 1.926km SSW of Ocotillo Wells, CAThu, Dec 24, 5:51 PM PST · 16343 days ago · 2 km deep · 65 km away
53. 2.012km SW of Salton City, CAFri, Dec 25, 9:26 AM PST · 16342 days ago · 8 km deep · 48 km away
54. 2.812km NNE of Ocotillo Wells, CAFri, Dec 25, 9:26 AM PST · 16342 days ago · 6 km deep · 48 km away
55. 1.711km NNE of Ocotillo Wells, CAFri, Dec 25, 9:27 AM PST · 16342 days ago · 4 km deep · 47 km away
56. 1.914km SE of Anza, CASat, Dec 26, 3:25 AM PST · 16341 days ago · 7 km deep · 11 km away
57. 1.91km ENE of Loma Linda, CASat, Dec 26, 7:30 AM PST · 16341 days ago · 15 km deep · 95 km away
58. 2.412km NE of Thousand Palms, CASat, Dec 26, 8:39 AM PST · 16341 days ago · 6 km deep · 45 km away
59. 1.725km WSW of Westmorland, CASat, Dec 26, 2:40 PM PST · 16341 days ago · 8 km deep · 80 km away
60. 1.88km NW of Morongo Valley, CASun, Dec 27, 3:47 AM PST · 16340 days ago · 4 km deep · 68 km away

The first 60 of 162.

Before

1. 2.812km N of Westmorland, CAMon, Nov 30, 7:14 PM PST · 16367 days ago · 14 km deep · 86 km away
2. 2.211km WNW of Calipatria, CAMon, Nov 30, 3:38 PM PST · 16367 days ago · 10 km deep · 86 km away
3. 1.810km NE of Aguanga, CAMon, Nov 30, 7:11 AM PST · 16367 days ago · 4 km deep · 30 km away
4. 1.614km WSW of Westmorland, CAMon, Nov 30, 2:15 AM PST · 16367 days ago · 5 km deep · 87 km away
5. 2.05km SSE of Banning, CASun, Nov 29, 11:19 PM PST · 16367 days ago · 12 km deep · 56 km away
6. 1.77km SE of Bombay Beach, CASun, Nov 29, 5:20 PM PST · 16368 days ago · 4 km deep · 75 km away
7. 2.08km SSE of Bombay Beach, CASun, Nov 29, 12:00 PM PST · 16368 days ago · 4 km deep · 75 km away
8. 1.610km NE of Aguanga, CASun, Nov 29, 11:29 AM PST · 16368 days ago · 4 km deep · 29 km away
9. 2.02km NNE of Loma Linda, CASun, Nov 29, 9:25 AM PST · 16368 days ago · 13 km deep · 96 km away
10. 1.72km NNE of Loma Linda, CASun, Nov 29, 7:14 AM PST · 16368 days ago · 14 km deep · 96 km away
11. 2.213km NE of Indio, CASun, Nov 29, 2:05 AM PST · 16368 days ago · 3 km deep · 45 km away
12. 2.17km SE of Valle Vista, CASat, Nov 28, 9:54 PM PST · 16369 days ago · 13 km deep · 41 km away
13. 2.98km SSW of Salton City, CASat, Nov 28, 6:43 PM PST · 16369 days ago · 10 km deep · 54 km away
14. 2.012km NNE of Pine Valley, CASat, Nov 28, 8:22 AM PST · 16369 days ago · 8 km deep · 65 km away
15. 2.54km SSE of Mentone, CAFri, Nov 27, 6:48 PM PST · 16370 days ago · 4 km deep · 85 km away
16. 1.516km NNW of Borrego Springs, CAFri, Nov 27, 4:19 PM PST · 16370 days ago · 11 km deep · 13 km away
17. 1.618km ESE of Anza, CAFri, Nov 27, 10:12 AM PST · 16370 days ago · 9 km deep · 5 km away
18. 1.914km E of Borrego Springs, CAFri, Nov 27, 3:26 AM PST · 16370 days ago · 9 km deep · 34 km away
19. 1.55km NNW of Brawley, CAThu, Nov 26, 12:08 PM PST · 16371 days ago · 10 km deep · 100 km away
20. 1.79km SW of Salton City, CAThu, Nov 26, 3:50 AM PST · 16371 days ago · 2 km deep · 48 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci102447. Read Tue, Sep 22, 2026, 5:24 PM UTC.