M1.6 earthquake 4km WNW of Lake Arrowhead, CA

Magnitude

1.6 (mc), micro

Local time

Thu, Oct 22, 1981, 10:52 AM PDT

UTC

1981-10-22 17:52:40 UTC

Depth

2.6 km (1.6 mi), shallow

Epicenter

34.259° N, 117.227° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.8 km in depth

Depth from

From location

Station coverage gap

48°

Stations used

25

• Lake Arrowhead, CaliforniaPopulation 12,424. Forecast4 kmWNW
• San Bernardino, CaliforniaPopulation 216,108. Forecast18 kmNNE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast96 kmENE

After

1. 1.72km ESE of Loma Linda, CAWed, Oct 28, 2:45 AM PST · 16400 days ago · 17 km deep · 24 km away
2. 1.618km NNE of Big Bear City, CAWed, Oct 28, 4:24 AM PST · 16400 days ago · 3 km deep · 44 km away
3. 1.610km ENE of Aguanga, CAThu, Oct 29, 2:47 AM PST · 16399 days ago · 4 km deep · 95 km away
4. 1.621km N of Yucca Valley, CAFri, Oct 30, 8:11 AM PST · 16398 days ago · 0 km deep · 70 km away
5. 1.78km E of Barstow, CAFri, Oct 30, 7:36 PM PST · 16397 days ago · 4 km deep · 76 km away
6. 2.24km SE of Rancho Cucamonga, CASat, Oct 31, 12:01 AM PST · 16397 days ago · 12 km deep · 35 km away
7. 2.69km ENE of Aguanga, CASat, Oct 31, 11:51 AM PST · 16397 days ago · 4 km deep · 96 km away
8. 1.99km ENE of Aguanga, CASat, Oct 31, 2:22 PM PST · 16397 days ago · 4 km deep · 96 km away
9. 2.820km NW of Barstow, CASun, Nov 1, 9:50 PM PST · 16395 days ago · 6 km deep · 83 km away
10. 1.75km N of Big Bear City, CAMon, Nov 2, 10:06 AM PST · 16395 days ago · 0 km deep · 35 km away
11. 1.88km NNE of San Jacinto, CATue, Nov 3, 5:09 AM PST · 16394 days ago · 12 km deep · 54 km away
12. 1.510km WSW of Anza, CATue, Nov 3, 6:10 AM PST · 16394 days ago · 4 km deep · 93 km away
13. 2.13km NW of Newport Beach, CAThu, Nov 5, 9:10 AM PST · 16392 days ago · 13 km deep · 96 km away
14. 1.68km NNW of Big Bear City, CAFri, Nov 6, 7:49 AM PST · 16391 days ago · 9 km deep · 33 km away
15. 1.522km N of Yucca Valley, CAFri, Nov 6, 2:20 PM PST · 16391 days ago · 3 km deep · 71 km away
16. 1.622km N of Yucca Valley, CASat, Nov 7, 4:05 PM PST · 16389 days ago · 0 km deep · 70 km away
17. 1.712km N of Banning, CASat, Nov 7, 6:40 PM PST · 16389 days ago · 15 km deep · 43 km away
18. 1.84km WSW of Rossmoor, CATue, Nov 10, 5:37 AM PST · 16387 days ago · 5 km deep · 98 km away
19. 2.02km NE of Irvine, CATue, Nov 10, 3:03 PM PST · 16386 days ago · 3 km deep · 81 km away
20. 2.21km W of Irvine, CATue, Nov 10, 5:19 PM PST · 16386 days ago · 4 km deep · 83 km away
21. 1.76km S of Lake Arrowhead, CATue, Nov 10, 8:49 PM PST · 16386 days ago · 1 km deep · 9 km away
22. 2.77km NNW of Fontana, CAThu, Nov 12, 3:20 AM PST · 16385 days ago · 6 km deep · 26 km away
23. 1.65km ENE of Joshua Tree, CAFri, Nov 13, 5:58 AM PST · 16384 days ago · -1 km deep · 90 km away
24. 2.37km ENE of Joshua Tree, CAFri, Nov 13, 8:45 AM PST · 16384 days ago · -1 km deep · 91 km away
25. 1.92km SSE of El Monte, CASat, Nov 14, 9:57 AM PST · 16383 days ago · 4 km deep · 76 km away
26. 1.65km ESE of Temecula, CAMon, Nov 16, 7:06 AM PST · 16381 days ago · 6 km deep · 88 km away
27. 1.69km NE of Lake Arrowhead, CAMon, Nov 16, 10:42 AM PST · 16381 days ago · 3 km deep · 11 km away
28. 2.312km N of Foothill Ranch, CATue, Nov 17, 11:29 AM PST · 16380 days ago · 1 km deep · 65 km away
29. 1.511km SW of Anza, CATue, Nov 17, 12:04 PM PST · 16380 days ago · 3 km deep · 95 km away
30. 1.85km SE of Temecula, CATue, Nov 17, 10:54 PM PST · 16379 days ago · 7 km deep · 90 km away
31. 1.95km SE of Temecula, CAWed, Nov 18, 1:08 AM PST · 16379 days ago · 7 km deep · 89 km away
32. 1.66km SE of Temecula, CAThu, Nov 19, 10:31 AM PST · 16378 days ago · 8 km deep · 89 km away
33. 2.14km S of Loma Linda, CAThu, Nov 19, 9:37 PM PST · 16377 days ago · 11 km deep · 28 km away
34. 1.72km NNE of Loma Linda, CAFri, Nov 20, 11:59 AM PST · 16377 days ago · 14 km deep · 22 km away
35. 2.37km NNE of Rancho Cucamonga, CASat, Nov 21, 12:38 AM PST · 16376 days ago · 5 km deep · 31 km away
36. 2.57km SSE of Banning, CASat, Nov 21, 9:48 AM PST · 16376 days ago · 12 km deep · 56 km away
37. 1.810km SW of Anza, CASun, Nov 22, 5:56 PM PST · 16374 days ago · 8 km deep · 95 km away
38. 1.813km SSE of Valle Vista, CAMon, Nov 23, 12:27 AM PST · 16374 days ago · 15 km deep · 78 km away
39. 2.111km N of Banning, CAMon, Nov 23, 2:42 PM PST · 16373 days ago · 10 km deep · 42 km away
40. 3.336km E of Barstow, CATue, Nov 24, 1:20 AM PST · 16373 days ago · 11 km deep · 88 km away
41. 1.734km E of Barstow, CATue, Nov 24, 7:10 AM PST · 16373 days ago · 1 km deep · 85 km away
42. 2.034km ENE of Big Bear City, CATue, Nov 24, 7:42 AM PST · 16373 days ago · 2 km deep · 66 km away
43. 2.034km E of Barstow, CATue, Nov 24, 8:15 AM PST · 16373 days ago · 5 km deep · 84 km away
44. 1.85km N of Banning, CATue, Nov 24, 8:54 AM PST · 16373 days ago · 16 km deep · 45 km away
45. 1.62km WNW of Costa Mesa, CATue, Nov 24, 8:22 PM PST · 16372 days ago · 5 km deep · 92 km away
46. 2.635km E of Barstow, CATue, Nov 24, 10:28 PM PST · 16372 days ago · 5 km deep · 85 km away
47. 2.54km SSE of Mentone, CAFri, Nov 27, 6:48 PM PST · 16369 days ago · 4 km deep · 27 km away
48. 2.17km SE of Valle Vista, CASat, Nov 28, 9:54 PM PST · 16368 days ago · 13 km deep · 71 km away
49. 1.72km NNE of Loma Linda, CASun, Nov 29, 7:14 AM PST · 16368 days ago · 14 km deep · 22 km away
50. 2.02km NNE of Loma Linda, CASun, Nov 29, 9:25 AM PST · 16368 days ago · 13 km deep · 22 km away
51. 1.610km NE of Aguanga, CASun, Nov 29, 11:29 AM PST · 16368 days ago · 4 km deep · 94 km away
52. 2.05km SSE of Banning, CASun, Nov 29, 11:19 PM PST · 16367 days ago · 12 km deep · 54 km away
53. 1.810km NE of Aguanga, CAMon, Nov 30, 7:11 AM PST · 16367 days ago · 4 km deep · 95 km away
54. 1.61km SSW of Paramount, CAMon, Nov 30, 7:34 AM PST · 16367 days ago · 5 km deep · 96 km away
55. 2.524km N of Yucca Valley, CAThu, Dec 3, 4:09 PM PST · 16363 days ago · 0 km deep · 72 km away
56. 1.611km S of Idyllwild, CASat, Dec 5, 5:01 AM PST · 16362 days ago · 10 km deep · 82 km away
57. 2.02km SSE of San Dimas, CASat, Dec 5, 12:49 PM PST · 16362 days ago · 13 km deep · 56 km away
58. 2.52km SE of San Dimas, CASat, Dec 5, 12:52 PM PST · 16362 days ago · 12 km deep · 55 km away
59. 1.824km N of Yucca Valley, CAMon, Dec 7, 9:32 AM PST · 16360 days ago · 2 km deep · 72 km away
60. 1.724km N of Yucca Valley, CAMon, Dec 7, 9:52 AM PST · 16360 days ago · 1 km deep · 72 km away

The first 60 of 77.

From the USGS Earthquake Hazards Program and its partner networks, event ci525960. Read Tue, Sep 22, 2026, 10:00 AM UTC.