M1.7 earthquake 94 km W of Adak, Alaska

Magnitude

1.7 (ML, local (Richter)), micro

Magnitude from

AV

Local time

Tue, Dec 20, 2022, 8:40 AM HAST

UTC

2022-12-20 18:40:58 UTC

Depth

-1.8 km (-1.1 mi), shallow

Epicenter

51.818° N, 178.009° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.9 km horizontally, 2.6 km in depth

Magnitude uncertainty

±0.22

Depth from

From location

Station coverage gap

283°, poorly surrounded by stations

Stations used

4

After

1. 3.1154 km WSW of Adak, AlaskaTue, Dec 20, 11:36 AM HAST · 1383 days ago · 35 km deep · 84 km away
2. 1.9125 km WSW of Adak, AlaskaTue, Dec 20, 8:42 PM HAST · 1383 days ago · 11 km deep · 44 km away
3. 1.536 km WSW of Adak, AlaskaWed, Dec 21, 1:49 AM HAST · 1383 days ago · 16 km deep · 62 km away
4. 1.9132 km WSW of Adak, AlaskaWed, Dec 21, 1:56 AM HAST · 1383 days ago · 20 km deep · 62 km away
5. 1.696 km W of Adak, AlaskaWed, Dec 21, 2:21 AM HAST · 1383 days ago · -1 km deep · 3 km away
6. 1.696 km W of Adak, AlaskaWed, Dec 21, 1:47 PM HAST · 1382 days ago · -2 km deep · 4 km away
7. 2.1171 km WSW of Adak, AlaskaWed, Dec 21, 5:12 PM HAST · 1382 days ago · 21 km deep · 81 km away
8. 1.896 km W of Adak, AlaskaWed, Dec 21, 5:45 PM HAST · 1382 days ago · -1 km deep · 6 km away
9. 2.8180 km WSW of Adak, AlaskaThu, Dec 22, 2:08 AM HAST · 1382 days ago · 27 km deep · 100 km away
10. 1.937 km SSW of Adak, AlaskaThu, Dec 22, 2:24 AM HAST · 1382 days ago · 40 km deep · 88 km away
11. 2.095 km W of Adak, AlaskaThu, Dec 22, 3:04 AM HAST · 1382 days ago · 5 km deep · 5 km away
12. 2.083 km W of Adak, AlaskaThu, Dec 22, 4:52 AM HAST · 1382 days ago · 9 km deep · 12 km away
13. 3.0125 km WSW of Adak, AlaskaThu, Dec 22, 6:26 AM HAST · 1382 days ago · 35 km deep · 48 km away
14. 1.696 km W of Adak, AlaskaThu, Dec 22, 9:59 AM HAST · 1381 days ago · -2 km deep · 3 km away
15. 2.9Andreanof Islands, Aleutian Islands, AlaskaThu, Dec 22, 10:58 AM HAST · 1381 days ago · 30 km deep · 96 km away
16. 1.596 km W of Adak, AlaskaThu, Dec 22, 12:48 PM HAST · 1381 days ago · -1 km deep · 3 km away
17. 3.0124 km W of Adak, AlaskaThu, Dec 22, 2:09 PM HAST · 1381 days ago · 19 km deep · 30 km away
18. 2.270 km SSW of Adak, AlaskaThu, Dec 22, 7:31 PM HAST · 1381 days ago · 21 km deep · 84 km away
19. 3.1181 km W of Adak, AlaskaFri, Dec 23, 1:53 PM HAST · 1380 days ago · 16 km deep · 86 km away
20. 2.095 km W of Adak, AlaskaFri, Dec 23, 3:44 PM HAST · 1380 days ago · 2 km deep · 5 km away
21. 2.0132 km WSW of Adak, AlaskaFri, Dec 23, 10:56 PM HAST · 1380 days ago · 14 km deep · 41 km away
22. 1.8101 km SW of Adak, AlaskaFri, Dec 23, 11:42 PM HAST · 1380 days ago · 21 km deep · 71 km away
23. 1.696 km W of Adak, AlaskaSat, Dec 24, 1:40 AM HAST · 1380 days ago · -2 km deep · 2 km away
24. 2.1123 km WSW of Adak, AlaskaSat, Dec 24, 5:40 AM HAST · 1380 days ago · 51 km deep · 52 km away
25. 2.1144 km W of Adak, AlaskaSat, Dec 24, 6:55 AM HAST · 1380 days ago · 12 km deep · 50 km away
26. 2.1129 km SW of Adak, AlaskaSat, Dec 24, 10:00 AM HAST · 1379 days ago · 21 km deep · 73 km away
27. 2.096 km W of Adak, AlaskaSat, Dec 24, 3:48 PM HAST · 1379 days ago · -1 km deep · 3 km away
28. 2.085 km SW of Adak, AlaskaSat, Dec 24, 4:55 PM HAST · 1379 days ago · 25 km deep · 51 km away
29. 1.982 km WSW of Adak, AlaskaSat, Dec 24, 6:53 PM HAST · 1379 days ago · 24 km deep · 28 km away
30. 2.5Andreanof Islands, Aleutian Islands, AlaskaSat, Dec 24, 8:32 PM HAST · 1379 days ago · 13 km deep · 52 km away
31. 2.5174 km WSW of Adak, AlaskaSat, Dec 24, 8:44 PM HAST · 1379 days ago · 30 km deep · 94 km away
32. 2.297 km W of Adak, AlaskaSat, Dec 24, 11:21 PM HAST · 1379 days ago · 94 km deep · 5 km away
33. 1.980 km WSW of Adak, AlaskaSun, Dec 25, 1:19 AM HAST · 1379 days ago · 44 km deep · 40 km away
34. 1.890 km W of Adak, AlaskaTue, Dec 27, 2:39 AM HAST · 1377 days ago · 7 km deep · 6 km away
35. 2.2148 km WSW of Adak, AlaskaTue, Dec 27, 6:25 AM HAST · 1377 days ago · 24 km deep · 75 km away
36. 1.596 km W of Adak, AlaskaTue, Dec 27, 6:57 AM HAST · 1377 days ago · -2 km deep · 3 km away
37. 3.494 km SW of Adak, AlaskaTue, Dec 27, 7:32 AM HAST · 1377 days ago · 42 km deep · 54 km away
38. 1.8Andreanof Islands, Aleutian Islands, AlaskaTue, Dec 27, 4:03 PM HAST · 1376 days ago · 13 km deep · 11 km away
39. 1.783 km W of Adak, AlaskaTue, Dec 27, 4:09 PM HAST · 1376 days ago · 8 km deep · 12 km away
40. 1.847 km SSW of Adak, AlaskaTue, Dec 27, 6:36 PM HAST · 1376 days ago · 24 km deep · 86 km away
41. 1.6153 km W of Adak, AlaskaWed, Dec 28, 3:58 AM HAST · 1376 days ago · 5 km deep · 58 km away
42. 2.419 km NNW of Adak, AlaskaWed, Dec 28, 9:52 AM HAST · 1375 days ago · 169 km deep · 89 km away
43. 2.1128 km WSW of Adak, AlaskaWed, Dec 28, 1:56 PM HAST · 1375 days ago · 24 km deep · 59 km away
44. 2.126 km WSW of Adak, AlaskaWed, Dec 28, 4:41 PM HAST · 1375 days ago · 78 km deep · 70 km away
45. 2.7111 km WSW of Adak, AlaskaWed, Dec 28, 8:42 PM HAST · 1375 days ago · 32 km deep · 35 km away
46. 2.653 km WSW of Adak, AlaskaFri, Dec 30, 3:28 AM HAST · 1374 days ago · 78 km deep · 46 km away
47. 3.722 km SW of Adak, AlaskaFri, Dec 30, 5:26 AM HAST · 1374 days ago · 73 km deep · 77 km away
48. 1.656 km WSW of Adak, AlaskaFri, Dec 30, 7:16 AM HAST · 1374 days ago · 18 km deep · 42 km away
49. 1.99 km SSE of Adak, AlaskaFri, Dec 30, 1:59 PM HAST · 1373 days ago · 70 km deep · 97 km away
50. 2.0Andreanof Islands, Aleutian Islands, AlaskaSat, Dec 31, 1:13 AM HAST · 1373 days ago · 67 km deep · 47 km away
51. 3.074 km SW of Adak, AlaskaSat, Dec 31, 7:37 PM HAST · 1372 days ago · 34 km deep · 54 km away
52. 1.756 km WSW of Adak, AlaskaSun, Jan 1, 7:23 AM HAST · 1372 days ago · 26 km deep · 52 km away
53. 2.0Andreanof Islands, Aleutian Islands, AlaskaSun, Jan 1, 7:41 AM HAST · 1372 days ago · 14 km deep · 54 km away
54. 2.1106 km WSW of Adak, AlaskaSun, Jan 1, 7:34 PM HAST · 1371 days ago · 13 km deep · 45 km away
55. 3.4102 km WSW of Adak, AlaskaSun, Jan 1, 11:01 PM HAST · 1371 days ago · 33 km deep · 50 km away
56. 2.048 km SSW of Adak, AlaskaMon, Jan 2, 5:37 AM HAST · 1371 days ago · 3 km deep · 79 km away
57. 2.0146 km WSW of Adak, AlaskaMon, Jan 2, 6:33 PM HAST · 1370 days ago · 22 km deep · 74 km away
58. 2.1Andreanof Islands, Aleutian Islands, AlaskaTue, Jan 3, 2:11 AM HAST · 1370 days ago · 7 km deep · 63 km away
59. 2.1174 km WSW of Adak, AlaskaTue, Jan 3, 2:44 AM HAST · 1370 days ago · 39 km deep · 88 km away
60. 1.8128 km WSW of Adak, AlaskaTue, Jan 3, 6:21 AM HAST · 1370 days ago · 13 km deep · 39 km away

The first 60 of at least 199.

Before

1. 2.1104 km SSW of Adak, AlaskaTue, Dec 20, 4:37 AM HAST · 1384 days ago · 44 km deep · 94 km away
2. 1.683 km SW of Adak, AlaskaMon, Dec 19, 7:59 PM HAST · 1384 days ago · 13 km deep · 66 km away
3. 2.8117 km WSW of Adak, AlaskaMon, Dec 19, 3:25 AM HAST · 1385 days ago · 34 km deep · 49 km away
4. 1.868 km SW of Adak, AlaskaSun, Dec 18, 8:34 PM HAST · 1385 days ago · 43 km deep · 52 km away
5. 2.04 km NNW of Adak, AlaskaSun, Dec 18, 6:35 AM HAST · 1386 days ago · 69 km deep · 94 km away
6. 2.9162 km WSW of Adak, AlaskaSun, Dec 18, 5:52 AM HAST · 1386 days ago · 27 km deep · 72 km away
7. 1.746 km SW of Adak, AlaskaSat, Dec 17, 9:29 PM HAST · 1386 days ago · 38 km deep · 69 km away
8. 2.4175 km W of Adak, AlaskaSat, Dec 17, 4:14 PM HAST · 1386 days ago · 80 km deep · 81 km away
9. 2.396 km W of Adak, AlaskaSat, Dec 17, 10:34 AM HAST · 1386 days ago · 3 km deep · 5 km away
10. 2.9130 km WSW of Adak, AlaskaSat, Dec 17, 7:00 AM HAST · 1387 days ago · 13 km deep · 55 km away
11. 2.053 km WSW of Adak, AlaskaFri, Dec 16, 9:15 PM HAST · 1387 days ago · 78 km deep · 51 km away
12. 2.1125 km WSW of Adak, AlaskaFri, Dec 16, 7:26 PM HAST · 1387 days ago · 15 km deep · 41 km away
13. 1.9Andreanof Islands, Aleutian Islands, AlaskaFri, Dec 16, 7:24 PM HAST · 1387 days ago · 12 km deep · 41 km away
14. 1.9126 km WSW of Adak, AlaskaFri, Dec 16, 6:11 PM HAST · 1387 days ago · 20 km deep · 35 km away
15. 1.696 km W of Adak, AlaskaFri, Dec 16, 6:27 AM HAST · 1388 days ago · -2 km deep · 6 km away
16. 1.998 km W of Adak, AlaskaThu, Dec 15, 1:47 AM HAST · 1389 days ago · -2 km deep · 5 km away
17. 2.499 km W of Adak, AlaskaThu, Dec 15, 1:46 AM HAST · 1389 days ago · 3 km deep · 5 km away
18. 2.0Andreanof Islands, Aleutian Islands, AlaskaThu, Dec 15, 12:14 AM HAST · 1389 days ago · 3 km deep · 5 km away
19. 2.399 km W of Adak, AlaskaWed, Dec 14, 10:35 PM HAST · 1389 days ago · 5 km deep · 6 km away
20. 1.991 km W of Adak, AlaskaWed, Dec 14, 10:19 PM HAST · 1389 days ago · -2 km deep · 5 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91734261. Read Sun, Oct 4, 2026, 6:46 AM UTC.