M1.8 earthquake 59 km SSW of Adak, Alaska

Magnitude

1.8 (ML, local (Richter)), micro

Magnitude from

Alaska Earthquake Center

Local time

Fri, Jul 31, 2026, 11:30 PM HADT

UTC

2026-08-01 08:30:51 UTC

Depth

34.4 km (21.4 mi), shallow

Epicenter

51.401° N, 177.039° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 13.2 km horizontally, 5.7 km in depth

Magnitude uncertainty

±0.20

Station coverage gap

242°, poorly surrounded by stations

Stations used

12

After

1. 1.754 km ESE of Adak, AlaskaSat, Aug 1, 12:44 AM HADT · 61 days ago · 134 km deep · 92 km away
2. 2.581 km SSW of Adak, AlaskaSat, Aug 1, 1:17 AM HADT · 61 days ago · 2 km deep · 26 km away
3. 2.151 km SSW of Adak, AlaskaSat, Aug 1, 3:09 AM HADT · 61 days ago · 22 km deep · 18 km away
4. 2.375 km SE of Adak, AlaskaSat, Aug 1, 3:42 AM HADT · 61 days ago · 23 km deep · 79 km away
5. 2.164 km SSW of Adak, AlaskaSat, Aug 1, 7:13 AM HADT · 61 days ago · 32 km deep · 5 km away
6. 2.3140 km WSW of Adak, AlaskaSat, Aug 1, 7:25 AM HADT · 61 days ago · 22 km deep · 98 km away
7. 2.381 km SSE of Adak, AlaskaSat, Aug 1, 10:15 AM HADT · 61 days ago · 16 km deep · 60 km away
8. 3.267 km SSW of Adak, AlaskaSat, Aug 1, 10:31 AM HADT · 61 days ago · 35 km deep · 17 km away
9. 1.879 km W of Adak, AlaskaSat, Aug 1, 11:49 PM HADT · 60 days ago · -2 km deep · 72 km away
10. 2.362 km SSE of Adak, AlaskaMon, Aug 3, 9:28 AM HADT · 59 days ago · 18 km deep · 59 km away
11. 2.060 km SSW of Adak, AlaskaMon, Aug 3, 1:14 PM HADT · 59 days ago · 37 km deep · 2 km away
12. 2.4124 km SW of Adak, AlaskaMon, Aug 3, 1:52 PM HADT · 59 days ago · 20 km deep · 73 km away
13. 2.5119 km SW of Adak, AlaskaMon, Aug 3, 3:29 PM HADT · 59 days ago · 16 km deep · 65 km away
14. 2.240 km S of Adak, AlaskaMon, Aug 3, 6:04 PM HADT · 59 days ago · 62 km deep · 34 km away
15. 1.964 km SSE of Adak, AlaskaTue, Aug 4, 11:34 AM HADT · 58 days ago · 32 km deep · 62 km away
16. 2.1125 km WSW of Adak, AlaskaTue, Aug 4, 10:32 PM HADT · 57 days ago · 6 km deep · 84 km away
17. 2.270 km SE of Adak, AlaskaWed, Aug 5, 3:44 AM HADT · 57 days ago · 27 km deep · 76 km away
18. 2.169 km SSE of Adak, AlaskaWed, Aug 5, 4:00 AM HADT · 57 days ago · 20 km deep · 65 km away
19. 3.261 km SE of Adak, AlaskaWed, Aug 5, 4:57 AM HADT · 57 days ago · 35 km deep · 76 km away
20. 1.968 km SSW of Adak, AlaskaWed, Aug 5, 5:41 AM HADT · 57 days ago · 27 km deep · 9 km away
21. 2.175 km SSE of Adak, AlaskaWed, Aug 5, 6:29 AM HADT · 57 days ago · 18 km deep · 56 km away
22. 2.1123 km WSW of Adak, AlaskaWed, Aug 5, 9:02 AM HADT · 57 days ago · 8 km deep · 84 km away
23. 2.725 km S of Adak, AlaskaWed, Aug 5, 3:48 PM HADT · 57 days ago · 95 km deep · 41 km away
24. 3.1141 km WSW of Adak, AlaskaWed, Aug 5, 9:52 PM HADT · 56 days ago · 48 km deep · 100 km away
25. 2.072 km SSW of Adak, AlaskaThu, Aug 6, 12:22 AM HADT · 56 days ago · 34 km deep · 17 km away
26. 1.764 km SE of Adak, AlaskaThu, Aug 6, 1:47 AM HADT · 56 days ago · 35 km deep · 72 km away
27. 1.990 km SW of Adak, AlaskaThu, Aug 6, 2:07 AM HADT · 56 days ago · 28 km deep · 36 km away
28. 3.167 km ESE of Adak, AlaskaThu, Aug 6, 4:35 AM HADT · 56 days ago · 35 km deep · 92 km away
29. 2.289 km SSE of Adak, AlaskaThu, Aug 6, 5:00 AM HADT · 56 days ago · 10 km deep · 65 km away
30. 2.048 km S of Adak, AlaskaThu, Aug 6, 6:29 AM HADT · 56 days ago · 56 km deep · 23 km away
31. 2.690 km SSE of Adak, AlaskaThu, Aug 6, 7:20 AM HADT · 56 days ago · 10 km deep · 67 km away
32. 2.855 km S of Adak, AlaskaThu, Aug 6, 1:39 PM HADT · 56 days ago · 35 km deep · 38 km away
33. 1.970 km SE of Adak, AlaskaThu, Aug 6, 2:39 PM HADT · 56 days ago · 28 km deep · 75 km away
34. 1.982 km SW of Adak, AlaskaThu, Aug 6, 2:55 PM HADT · 56 days ago · 36 km deep · 29 km away
35. 2.6144 km SW of Adak, AlaskaThu, Aug 6, 3:42 PM HADT · 56 days ago · 5 km deep · 88 km away
36. 1.861 km S of Adak, AlaskaThu, Aug 6, 9:20 PM HADT · 55 days ago · 33 km deep · 30 km away
37. 1.969 km SSE of Adak, AlaskaThu, Aug 6, 9:49 PM HADT · 55 days ago · 21 km deep · 56 km away
38. 2.1130 km SW of Adak, AlaskaThu, Aug 6, 10:07 PM HADT · 55 days ago · 47 km deep · 83 km away
39. 2.3135 km SW of Adak, AlaskaThu, Aug 6, 10:25 PM HADT · 55 days ago · 7 km deep · 80 km away
40. 2.075 km SSW of Adak, AlaskaFri, Aug 7, 3:02 AM HADT · 55 days ago · 29 km deep · 18 km away
41. 1.881 km SSW of Adak, AlaskaFri, Aug 7, 3:30 AM HADT · 55 days ago · 26 km deep · 25 km away
42. 2.168 km SE of Adak, AlaskaFri, Aug 7, 5:39 AM HADT · 55 days ago · 27 km deep · 73 km away
43. 2.236 km SSE of Adak, AlaskaFri, Aug 7, 5:42 AM HADT · 55 days ago · 43 km deep · 45 km away
44. 3.066 km ESE of Adak, AlaskaFri, Aug 7, 6:40 AM HADT · 55 days ago · 35 km deep · 87 km away
45. 2.374 km SE of Adak, AlaskaFri, Aug 7, 1:53 PM HADT · 55 days ago · 22 km deep · 79 km away
46. 2.667 km S of Adak, AlaskaFri, Aug 7, 2:07 PM HADT · 55 days ago · 11 km deep · 34 km away
47. 2.4138 km SW of Adak, AlaskaFri, Aug 7, 7:06 PM HADT · 55 days ago · 6 km deep · 83 km away
48. 1.798 km SW of Adak, AlaskaSat, Aug 8, 1:57 AM HADT · 54 days ago · 29 km deep · 50 km away
49. 1.961 km SSW of Adak, AlaskaSat, Aug 8, 4:44 AM HADT · 54 days ago · 33 km deep · 2 km away
50. 1.791 km W of Adak, AlaskaSat, Aug 8, 4:58 AM HADT · 54 days ago · 15 km deep · 81 km away
51. 2.0124 km WSW of Adak, AlaskaSat, Aug 8, 5:27 AM HADT · 54 days ago · 14 km deep · 80 km away
52. 2.070 km SSE of Adak, AlaskaSat, Aug 8, 5:28 AM HADT · 54 days ago · 22 km deep · 66 km away
53. 2.489 km W of Adak, AlaskaSat, Aug 8, 7:12 AM HADT · 54 days ago · 9 km deep · 82 km away
54. 1.691 km W of Adak, AlaskaSat, Aug 8, 7:42 AM HADT · 54 days ago · 13 km deep · 80 km away
55. 1.616 km WSW of Adak, AlaskaSat, Aug 8, 5:13 PM HADT · 54 days ago · 92 km deep · 46 km away
56. 2.599 km SW of Adak, AlaskaSat, Aug 8, 8:28 PM HADT · 54 days ago · 8 km deep · 47 km away
57. 1.874 km SSW of Adak, AlaskaSat, Aug 8, 9:17 PM HADT · 53 days ago · 26 km deep · 20 km away
58. 1.680 km WSW of Adak, AlaskaSat, Aug 8, 9:31 PM HADT · 53 days ago · 73 km deep · 47 km away
59. 1.893 km SW of Adak, AlaskaSat, Aug 8, 9:32 PM HADT · 53 days ago · 52 km deep · 48 km away
60. 1.979 km S of Adak, AlaskaSat, Aug 8, 10:34 PM HADT · 53 days ago · 19 km deep · 41 km away

The first 60 of at least 200.

Before

1. 2.072 km SE of Adak, AlaskaFri, Jul 31, 10:53 PM HADT · 61 days ago · 28 km deep · 74 km away
2. 2.191 km SW of Adak, AlaskaFri, Jul 31, 5:04 PM HADT · 62 days ago · 28 km deep · 37 km away
3. 2.242 km S of Adak, AlaskaFri, Jul 31, 11:11 AM HADT · 62 days ago · 64 km deep · 23 km away
4. 2.563 km SE of Adak, AlaskaFri, Jul 31, 9:22 AM HADT · 62 days ago · 33 km deep · 81 km away
5. 2.176 km SE of Adak, AlaskaFri, Jul 31, 1:07 AM HADT · 62 days ago · 35 km deep · 75 km away
6. 2.077 km SSE of Adak, AlaskaThu, Jul 30, 10:15 PM HADT · 62 days ago · 25 km deep · 70 km away
7. 2.1122 km WSW of Adak, AlaskaThu, Jul 30, 5:39 PM HADT · 63 days ago · 11 km deep · 78 km away
8. 2.164 km SSW of Adak, AlaskaThu, Jul 30, 11:48 AM HADT · 63 days ago · 24 km deep · 6 km away
9. 2.467 km S of Adak, AlaskaThu, Jul 30, 11:15 AM HADT · 63 days ago · 18 km deep · 34 km away
10. 2.159 km SSW of Adak, AlaskaThu, Jul 30, 8:55 AM HADT · 63 days ago · 47 km deep · 15 km away
11. 1.854 km WSW of Adak, AlaskaWed, Jul 29, 9:54 PM HADT · 63 days ago · 88 km deep · 39 km away
12. 2.675 km SSW of Adak, AlaskaWed, Jul 29, 8:01 PM HADT · 64 days ago · 32 km deep · 16 km away
13. 1.973 km S of Adak, AlaskaWed, Jul 29, 7:18 PM HADT · 64 days ago · 20 km deep · 37 km away
14. 1.992 km SW of Adak, AlaskaWed, Jul 29, 12:01 PM HADT · 64 days ago · 21 km deep · 44 km away
15. 2.4116 km SSE of Adak, AlaskaWed, Jul 29, 10:33 AM HADT · 64 days ago · 15 km deep · 99 km away
16. 1.7123 km WSW of Adak, AlaskaWed, Jul 29, 7:15 AM HADT · 64 days ago · 3 km deep · 81 km away
17. 1.977 km SSW of Adak, AlaskaWed, Jul 29, 6:30 AM HADT · 64 days ago · 35 km deep · 19 km away
18. 2.1111 km SW of Adak, AlaskaWed, Jul 29, 6:27 AM HADT · 64 days ago · 17 km deep · 59 km away
19. 1.9125 km WSW of Adak, AlaskaWed, Jul 29, 6:09 AM HADT · 64 days ago · 14 km deep · 94 km away
20. 2.144 km SW of Adak, AlaskaWed, Jul 29, 4:56 AM HADT · 64 days ago · 102 km deep · 23 km away

From the USGS Earthquake Hazards Program and its partner networks, event aka2026pcfrlf. Read Thu, Oct 1, 2026, 5:16 PM UTC.