M1.5 earthquake 11km W of Anza, CA

Magnitude

1.5 (mh), micro

Local time

Fri, Oct 16, 1981, 7:40 PM PDT

UTC

1981-10-17 02:40:35 UTC

Depth

2.4 km (1.5 mi), shallow

Epicenter

33.543° N, 116.792° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.5 km in depth

Depth from

From location

Station coverage gap

50°

Stations used

17

• Anza, CaliforniaPopulation 3,014. Forecast11 kmW
• Valle Vista, CaliforniaPopulation 14,578. Forecast25 kmSSE
• Temecula, CaliforniaPopulation 110,003. Forecast33 kmE
• San Diego, CaliforniaPopulation 1,404,452. Forecast98 kmNNE

After

1. 1.64km NNE of Cabazon, CASat, Oct 17, 12:10 AM PDT · 16412 days ago · 16 km deep · 45 km away
2. 1.823km NNW of Joshua Tree, CASat, Oct 17, 6:12 AM PDT · 16411 days ago · -1 km deep · 96 km away
3. 1.53km S of San Bernardino, CASat, Oct 17, 7:25 AM PDT · 16411 days ago · 3 km deep · 78 km away
4. 2.33km S of San Bernardino, CASat, Oct 17, 7:29 AM PDT · 16411 days ago · 3 km deep · 78 km away
5. 1.812km NE of Ocotillo Wells, CASat, Oct 17, 10:12 AM PDT · 16411 days ago · 5 km deep · 77 km away
6. 2.012km SW of Salton City, CASat, Oct 17, 12:36 PM PDT · 16411 days ago · 5 km deep · 77 km away
7. 3.712km SW of Salton City, CASat, Oct 17, 12:47 PM PDT · 16411 days ago · 15 km deep · 77 km away
8. 1.712km NNE of Ocotillo Wells, CASat, Oct 17, 12:49 PM PDT · 16411 days ago · 3 km deep · 76 km away
9. 2.112km NE of Ocotillo Wells, CASat, Oct 17, 12:50 PM PDT · 16411 days ago · 5 km deep · 79 km away
10. 2.011km NNE of Ocotillo Wells, CASat, Oct 17, 12:51 PM PDT · 16411 days ago · 5 km deep · 76 km away
11. 2.212km NE of Ocotillo Wells, CASat, Oct 17, 12:53 PM PDT · 16411 days ago · 6 km deep · 76 km away
12. 3.112km NNE of Ocotillo Wells, CASat, Oct 17, 12:54 PM PDT · 16411 days ago · 5 km deep · 76 km away
13. 1.712km NE of Ocotillo Wells, CASat, Oct 17, 1:00 PM PDT · 16411 days ago · 5 km deep · 77 km away
14. 1.811km SW of Salton City, CASat, Oct 17, 1:00 PM PDT · 16411 days ago · 5 km deep · 77 km away
15. 1.612km SW of Salton City, CASat, Oct 17, 1:16 PM PDT · 16411 days ago · 6 km deep · 77 km away
16. 2.112km NE of Ocotillo Wells, CASat, Oct 17, 2:49 PM PDT · 16411 days ago · 4 km deep · 77 km away
17. 2.112km NE of Ocotillo Wells, CASat, Oct 17, 5:07 PM PDT · 16411 days ago · 7 km deep · 76 km away
18. 1.73km SSW of San Bernardino, CASat, Oct 17, 6:12 PM PDT · 16411 days ago · 3 km deep · 78 km away
19. 1.611km SW of Anza, CASat, Oct 17, 6:16 PM PDT · 16411 days ago · 3 km deep · 5 km away
20. 2.29km ENE of Aguanga, CASun, Oct 18, 6:58 PM PDT · 16410 days ago · 2 km deep · 7 km away
21. 2.013km SE of Anza, CASun, Oct 18, 8:10 PM PDT · 16410 days ago · 7 km deep · 22 km away
22. 1.625km ENE of Pine Valley, CAMon, Oct 19, 12:11 AM PDT · 16410 days ago · 6 km deep · 82 km away
23. 1.69km SW of Idyllwild, CAMon, Oct 19, 4:23 AM PDT · 16409 days ago · 13 km deep · 17 km away
24. 2.317km NW of Yucca Valley, CAMon, Oct 19, 9:04 AM PDT · 16409 days ago · 8 km deep · 78 km away
25. 3.024km N of Yucca Valley, CAMon, Oct 19, 2:43 PM PDT · 16409 days ago · 1 km deep · 93 km away
26. 1.624km N of Yucca Valley, CAMon, Oct 19, 3:16 PM PDT · 16409 days ago · 1 km deep · 93 km away
27. 3.021km ESE of Anza, CATue, Oct 20, 5:40 AM PDT · 16408 days ago · 9 km deep · 32 km away
28. 1.99km ENE of Aguanga, CATue, Oct 20, 7:58 AM PDT · 16408 days ago · 4 km deep · 7 km away
29. 2.221km ESE of Anza, CATue, Oct 20, 10:23 AM PDT · 16408 days ago · 11 km deep · 31 km away
30. 3.310km NE of Aguanga, CATue, Oct 20, 10:37 PM PDT · 16408 days ago · 6 km deep · 6 km away
31. 1.89km SE of Valle Vista, CAWed, Oct 21, 9:44 AM PDT · 16407 days ago · 16 km deep · 18 km away
32. 1.79km SE of Big Bear City, CAWed, Oct 21, 9:21 PM PDT · 16407 days ago · 8 km deep · 73 km away
33. 1.64km WNW of Lake Arrowhead, CAThu, Oct 22, 10:52 AM PDT · 16406 days ago · 3 km deep · 89 km away
34. 2.56km SSW of Redlands, CAThu, Oct 22, 8:50 PM PDT · 16406 days ago · 12 km deep · 63 km away
35. 1.70km WNW of Muscoy, CAThu, Oct 22, 10:46 PM PDT · 16406 days ago · 2 km deep · 85 km away
36. 2.016km E of Desert Hot Springs, CAFri, Oct 23, 10:34 AM PDT · 16405 days ago · -1 km deep · 64 km away
37. 1.78km NNE of Cabazon, CAFri, Oct 23, 3:40 PM PDT · 16405 days ago · 16 km deep · 49 km away
38. 2.314km SSW of Borrego Springs, CASat, Oct 24, 5:19 AM PDT · 16404 days ago · 8 km deep · 55 km away
39. 2.122km ESE of Anza, CASat, Oct 24, 12:47 PM PDT · 16404 days ago · 6 km deep · 32 km away
40. 2.211km NNE of Aguanga, CASun, Oct 25, 2:47 PM PST · 16403 days ago · 5 km deep · 2 km away
41. 2.916km NNE of Borrego Springs, CAMon, Oct 26, 6:56 PM PST · 16402 days ago · 14 km deep · 49 km away
42. 2.014km NE of Thousand Palms, CATue, Oct 27, 9:34 AM PST · 16401 days ago · 6 km deep · 62 km away
43. 1.523km ESE of Anza, CATue, Oct 27, 6:59 PM PST · 16401 days ago · 10 km deep · 33 km away
44. 1.72km ESE of Loma Linda, CAWed, Oct 28, 2:45 AM PST · 16400 days ago · 17 km deep · 69 km away
45. 1.618km NNE of Big Bear City, CAWed, Oct 28, 4:24 AM PST · 16400 days ago · 3 km deep · 96 km away
46. 1.610km ENE of Aguanga, CAThu, Oct 29, 2:47 AM PST · 16399 days ago · 4 km deep · 6 km away
47. 1.912km SE of Anza, CAThu, Oct 29, 6:03 AM PST · 16399 days ago · 4 km deep · 20 km away
48. 1.98km SW of La Jolla, CAThu, Oct 29, 3:43 PM PST · 16399 days ago · 6 km deep · 97 km away
49. 1.621km N of Yucca Valley, CAFri, Oct 30, 8:11 AM PST · 16398 days ago · 0 km deep · 90 km away
50. 2.111km SW of Salton City, CAFri, Oct 30, 6:18 PM PST · 16398 days ago · 6 km deep · 77 km away
51. 2.24km SE of Rancho Cucamonga, CASat, Oct 31, 12:01 AM PST · 16398 days ago · 12 km deep · 94 km away
52. 1.513km SSW of Borrego Springs, CASat, Oct 31, 8:16 AM PST · 16397 days ago · 6 km deep · 53 km away
53. 2.69km ENE of Aguanga, CASat, Oct 31, 11:51 AM PST · 16397 days ago · 4 km deep · 7 km away
54. 1.99km ENE of Aguanga, CASat, Oct 31, 2:22 PM PST · 16397 days ago · 4 km deep · 7 km away
55. 1.75km N of Big Bear City, CAMon, Nov 2, 10:06 AM PST · 16395 days ago · 0 km deep · 85 km away
56. 1.523km SSW of Ocotillo Wells, CAMon, Nov 2, 8:18 PM PST · 16395 days ago · 5 km deep · 82 km away
57. 1.511km NNE of Borrego Springs, CATue, Nov 3, 2:26 AM PST · 16394 days ago · 11 km deep · 48 km away
58. 1.88km NNE of San Jacinto, CATue, Nov 3, 5:09 AM PST · 16394 days ago · 12 km deep · 36 km away
59. 1.510km WSW of Anza, CATue, Nov 3, 6:10 AM PST · 16394 days ago · 4 km deep · 4 km away
60. 1.56km NNW of Ocotillo Wells, CAThu, Nov 5, 6:11 PM PST · 16392 days ago · 8 km deep · 71 km away

The first 60 of 149.

Before

1. 1.55km SE of Ontario, CAFri, Oct 16, 9:11 AM PDT · 16412 days ago · 5 km deep · 91 km away
2. 1.512km W of Anza, CAThu, Oct 15, 6:15 PM PDT · 16413 days ago · 4 km deep · 1 km away
3. 1.610km NE of Aguanga, CAThu, Oct 15, 11:28 AM PDT · 16413 days ago · 1 km deep · 5 km away
4. 2.54km E of Palomar Observatory, CAThu, Oct 15, 8:26 AM PDT · 16413 days ago · 5 km deep · 21 km away
5. 1.512km W of Anza, CAThu, Oct 15, 8:02 AM PDT · 16413 days ago · 2 km deep · 1 km away
6. 2.412km WSW of Anza, CAThu, Oct 15, 7:41 AM PDT · 16413 days ago · 4 km deep · 1 km away
7. 1.724km NNW of Yucca Valley, CAThu, Oct 15, 1:46 AM PDT · 16414 days ago · 0 km deep · 88 km away
8. 1.59km ENE of Villa Park, CAWed, Oct 14, 6:09 PM PDT · 16414 days ago · 8 km deep · 92 km away
9. 1.94km SSE of Loma Linda, CAWed, Oct 14, 10:26 AM PDT · 16414 days ago · 13 km deep · 67 km away
10. 3.513km SSW of Twentynine Palms, CATue, Oct 13, 1:14 PM PDT · 16415 days ago · 9 km deep · 82 km away
11. 1.86km SSW of Banning, CAMon, Oct 12, 10:04 AM PDT · 16416 days ago · 11 km deep · 38 km away
12. 1.911km WSW of Anza, CASun, Oct 11, 4:43 AM PDT · 16417 days ago · 4 km deep · 4 km away
13. 1.75km NNE of Cabazon, CASun, Oct 11, 12:41 AM PDT · 16418 days ago · 17 km deep · 46 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci525668. Read Tue, Sep 22, 2026, 8:45 PM UTC.