M1.8 earthquake 42 km W of Adak, Alaska

Magnitude

1.8 (ml), micro

Local time

Mon, Mar 23, 2020, 8:47 AM HADT

UTC

2020-03-23 17:47:17 UTC

Depth

69.3 km (43.1 mi), shallow

Epicenter

51.833° N, 177.252° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

29

After

1. 1.8131 km WSW of Adak, AlaskaMon, Mar 23, 9:46 AM HADT · 2382 days ago · 27 km deep · 95 km away
2. 2.5136 km W of Adak, AlaskaMon, Mar 23, 2:13 PM HADT · 2382 days ago · 138 km deep · 93 km away
3. 1.7114 km WSW of Adak, AlaskaMon, Mar 23, 2:36 PM HADT · 2382 days ago · 13 km deep · 75 km away
4. 2.315 km NW of Adak, AlaskaMon, Mar 23, 5:03 PM HADT · 2381 days ago · 188 km deep · 35 km away
5. 1.866 km W of Adak, AlaskaMon, Mar 23, 5:16 PM HADT · 2381 days ago · 90 km deep · 24 km away
6. 1.641 km ENE of Adak, AlaskaTue, Mar 24, 1:30 AM HADT · 2381 days ago · 3 km deep · 82 km away
7. 2.0136 km WSW of Adak, AlaskaTue, Mar 24, 3:54 AM HADT · 2381 days ago · 5 km deep · 94 km away
8. 1.898 km WSW of Adak, AKTue, Mar 24, 3:02 PM HADT · 2381 days ago · 31 km deep · 61 km away
9. 2.868 km SE of Adak, AlaskaTue, Mar 24, 3:55 PM HADT · 2380 days ago · 31 km deep · 97 km away
10. 2.664 km SE of Adak, AlaskaTue, Mar 24, 4:13 PM HADT · 2380 days ago · 36 km deep · 96 km away
11. 2.062 km SE of Adak, AlaskaWed, Mar 25, 7:17 AM HADT · 2380 days ago · 22 km deep · 93 km away
12. 1.678 km W of Adak, AlaskaWed, Mar 25, 11:24 AM HADT · 2380 days ago · 7 km deep · 35 km away
13. 2.653 km S of Adak, AlaskaWed, Mar 25, 8:49 PM HADT · 2379 days ago · 37 km deep · 67 km away
14. 1.772 km SW of Adak, AlaskaThu, Mar 26, 8:08 AM HADT · 2379 days ago · 36 km deep · 41 km away
15. 1.579 km W of Adak, AlaskaThu, Mar 26, 8:24 AM HADT · 2379 days ago · 7 km deep · 37 km away
16. 2.548 km SE of Adak, AlaskaThu, Mar 26, 12:06 PM HADT · 2379 days ago · 37 km deep · 84 km away
17. 1.7131 km SW of Adak, AlaskaThu, Mar 26, 4:11 PM HADT · 2378 days ago · 36 km deep · 96 km away
18. 1.9120 km WSW of Adak, AlaskaThu, Mar 26, 8:21 PM HADT · 2378 days ago · 10 km deep · 80 km away
19. 1.6112 km WSW of Adak, AlaskaThu, Mar 26, 10:37 PM HADT · 2378 days ago · 51 km deep · 75 km away
20. 2.9102 km WSW of Adak, AlaskaThu, Mar 26, 11:03 PM HADT · 2378 days ago · 69 km deep · 63 km away
21. 3.592 km SW of Adak, AlaskaFri, Mar 27, 4:35 AM HADT · 2378 days ago · 17 km deep · 65 km away
22. 2.858 km SSE of Adak, AlaskaFri, Mar 27, 1:52 PM HADT · 2378 days ago · 35 km deep · 80 km away
23. 3.410 km S of Adak, AlaskaFri, Mar 27, 5:48 PM HADT · 2377 days ago · 79 km deep · 41 km away
24. 1.572 km SW of Adak, AlaskaFri, Mar 27, 6:23 PM HADT · 2377 days ago · 26 km deep · 46 km away
25. 1.673 km SW of Adak, AlaskaFri, Mar 27, 8:11 PM HADT · 2377 days ago · 34 km deep · 42 km away
26. 1.743 km ENE of Adak, AlaskaSat, Mar 28, 6:29 AM HADT · 2377 days ago · 8 km deep · 85 km away
27. 1.855 km ESE of Adak, AlaskaSat, Mar 28, 9:58 AM HADT · 2377 days ago · 37 km deep · 94 km away
28. 3.5116 km WSW of Adak, AKSat, Mar 28, 3:20 PM HADT · 2376 days ago · 58 km deep · 79 km away
29. 2.799 km W of Adak, AlaskaSat, Mar 28, 9:34 PM HADT · 2376 days ago · 197 km deep · 57 km away
30. 2.6111 km WSW of Adak, AlaskaSun, Mar 29, 10:31 PM HADT · 2375 days ago · 40 km deep · 74 km away
31. 3.252 km SW of Adak, AlaskaSun, Mar 29, 10:52 PM HADT · 2375 days ago · 44 km deep · 41 km away
32. 1.760 km SSW of Adak, AlaskaMon, Mar 30, 12:04 AM HADT · 2375 days ago · 40 km deep · 51 km away
33. 2.0131 km WSW of Adak, AlaskaMon, Mar 30, 3:03 AM HADT · 2375 days ago · 25 km deep · 91 km away
34. 1.681 km W of Adak, AlaskaMon, Mar 30, 4:34 AM HADT · 2375 days ago · 7 km deep · 39 km away
35. 1.579 km WSW of Adak, AlaskaMon, Mar 30, 9:56 PM HADT · 2374 days ago · 26 km deep · 45 km away
36. 1.840 km S of Adak, AlaskaTue, Mar 31, 2:12 AM HADT · 2374 days ago · 32 km deep · 51 km away
37. 1.681 km W of Adak, AlaskaTue, Mar 31, 4:07 AM HADT · 2374 days ago · 7 km deep · 40 km away
38. 1.741 km ENE of Adak, AlaskaTue, Mar 31, 10:59 AM HADT · 2374 days ago · 4 km deep · 82 km away
39. 1.534 km ESE of Adak, AlaskaTue, Mar 31, 3:03 PM HADT · 2374 days ago · 72 km deep · 76 km away
40. 1.641 km S of Adak, AlaskaTue, Mar 31, 5:24 PM HADT · 2373 days ago · 33 km deep · 58 km away
41. 1.765 km SE of Adak, AlaskaTue, Mar 31, 7:25 PM HADT · 2373 days ago · 27 km deep · 94 km away
42. 1.6131 km WSW of Adak, AlaskaWed, Apr 1, 1:22 AM HADT · 2373 days ago · 29 km deep · 95 km away
43. 1.576 km W of Adak, AlaskaWed, Apr 1, 2:39 AM HADT · 2373 days ago · 7 km deep · 34 km away
44. 1.739 km W of Adak, AlaskaWed, Apr 1, 12:41 PM HADT · 2373 days ago · 92 km deep · 4 km away
45. 2.075 km W of Adak, AlaskaWed, Apr 1, 3:44 PM HADT · 2372 days ago · 6 km deep · 32 km away
46. 3.5132 km WSW of Adak, AlaskaWed, Apr 1, 3:45 PM HADT · 2372 days ago · 32 km deep · 96 km away
47. 1.796 km WSW of Adak, AlaskaThu, Apr 2, 6:16 AM HADT · 2372 days ago · 21 km deep · 58 km away
48. 2.0134 km WSW of Adak, AlaskaThu, Apr 2, 7:31 AM HADT · 2372 days ago · 7 km deep · 92 km away
49. 3.544 km W of Adak, AlaskaThu, Apr 2, 2:41 PM HADT · 2372 days ago · 101 km deep · 2 km away
50. 3.244 km SSW of Adak, AlaskaThu, Apr 2, 8:10 PM HADT · 2371 days ago · 34 km deep · 52 km away
51. 1.962 km WSW of Adak, AlaskaThu, Apr 2, 10:37 PM HADT · 2371 days ago · 13 km deep · 24 km away
52. 2.7127 km WSW of Adak, AlaskaFri, Apr 3, 2:03 AM HADT · 2371 days ago · 28 km deep · 90 km away
53. 1.737 km WSW of Adak, AlaskaFri, Apr 3, 9:54 AM HADT · 2371 days ago · 13 km deep · 16 km away
54. 2.144 km ENE of Adak, AlaskaFri, Apr 3, 3:53 PM HADT · 2370 days ago · 9 km deep · 85 km away
55. 2.260 km WSW of Adak, AlaskaFri, Apr 3, 4:36 PM HADT · 2370 days ago · 14 km deep · 29 km away
56. 1.981 km W of Adak, AlaskaSat, Apr 4, 2:50 PM HADT · 2370 days ago · 3 km deep · 39 km away
57. 2.054 km SSE of Adak, AlaskaSun, Apr 5, 3:31 AM HADT · 2369 days ago · 25 km deep · 82 km away
58. 3.5Andreanof Islands, Aleutian Islands, AlaskaSun, Apr 5, 7:37 PM HADT · 2368 days ago · 77 km deep · 14 km away
59. 1.982 km W of Adak, AlaskaSun, Apr 5, 8:44 PM HADT · 2368 days ago · 5 km deep · 40 km away
60. 2.782 km W of Adak, AlaskaSun, Apr 5, 10:47 PM HADT · 2368 days ago · 8 km deep · 40 km away

The first 60 of at least 199.

Before

1. 2.239 km ESE of Adak, AlaskaMon, Mar 23, 4:09 AM HADT · 2382 days ago · 133 km deep · 80 km away
2. 2.366 km W of Adak, AlaskaMon, Mar 23, 3:52 AM HADT · 2382 days ago · 93 km deep · 23 km away
3. 5.071 km WNW of Adak, AlaskaMon, Mar 23, 3:25 AM HADT · 2382 days ago · 101 km deep · 38 km away
4. 2.760 km SE of Adak, AlaskaSun, Mar 22, 7:05 PM HADT · 2382 days ago · 36 km deep · 90 km away
5. 1.756 km SE of Adak, AlaskaSun, Mar 22, 6:15 AM HADT · 2383 days ago · 27 km deep · 90 km away
6. 3.162 km S of Adak, AlaskaSun, Mar 22, 2:49 AM HADT · 2383 days ago · 35 km deep · 65 km away
7. 2.791 km SW of Adak, AlaskaSat, Mar 21, 2:22 PM HADT · 2384 days ago · 62 km deep · 58 km away
8. 1.5128 km WSW of Adak, AlaskaFri, Mar 20, 11:40 AM HADT · 2385 days ago · 13 km deep · 85 km away
9. 2.5135 km W of Adak, AlaskaFri, Mar 20, 9:03 AM HADT · 2385 days ago · 211 km deep · 94 km away
10. 1.9135 km WSW of Adak, AlaskaFri, Mar 20, 6:12 AM HADT · 2385 days ago · 7 km deep · 92 km away
11. 3.017 km NNW of Adak, AlaskaThu, Mar 19, 3:33 PM HADT · 2385 days ago · 215 km deep · 42 km away
12. 1.841 km SSW of Adak, AlaskaThu, Mar 19, 11:09 AM HADT · 2386 days ago · 36 km deep · 46 km away
13. 2.718 km SSE of Adak, AlaskaThu, Mar 19, 10:32 AM HADT · 2386 days ago · 69 km deep · 51 km away
14. 2.257 km SW of Adak, AlaskaThu, Mar 19, 3:57 AM HADT · 2386 days ago · 52 km deep · 36 km away
15. 3.3123 km WSW of Adak, AlaskaWed, Mar 18, 2:01 AM HADT · 2387 days ago · 28 km deep · 85 km away
16. 1.662 km W of Adak, AlaskaTue, Mar 17, 9:33 AM HADT · 2388 days ago · 7 km deep · 20 km away
17. 1.6123 km WSW of Adak, AlaskaTue, Mar 17, 7:45 AM HADT · 2388 days ago · 26 km deep · 86 km away
18. 1.937 km WSW of Adak, AlaskaTue, Mar 17, 6:08 AM HADT · 2388 days ago · 12 km deep · 17 km away
19. 2.0125 km WSW of Adak, AlaskaMon, Mar 16, 6:31 AM HADT · 2389 days ago · 8 km deep · 83 km away
20. 1.641 km E of Adak, AlaskaSun, Mar 15, 8:39 PM HADT · 2389 days ago · 72 km deep · 84 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak0203tk0a8p. Read Wed, Sep 30, 2026, 11:33 AM UTC.