M1.6 earthquake 77 km W of Adak, Alaska

Magnitude

1.6 (ml), micro

Local time

Sun, Aug 30, 2020, 3:16 PM HADT

UTC

2020-08-31 00:16:21 UTC

Depth

4.2 km (2.6 mi), shallow

Epicenter

51.851° N, 177.752° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.8 km in depth

Magnitude uncertainty

±0.33

Depth from

From location

Station coverage gap

153°

Stations used

11

After

1. 1.9135 km WSW of Adak, AlaskaMon, Aug 31, 8:46 AM HADT · 2219 days ago · 26 km deep · 69 km away
2. 1.7109 km WSW of Adak, AlaskaMon, Aug 31, 9:41 AM HADT · 2219 days ago · 21 km deep · 46 km away
3. 3.2149 km SW of Adak, AlaskaMon, Aug 31, 12:10 PM HADT · 2218 days ago · 30 km deep · 95 km away
4. 1.539 km SSE of Adak, AlaskaMon, Aug 31, 5:32 PM HADT · 2218 days ago · 36 km deep · 96 km away
5. 1.981 km W of Adak, AlaskaMon, Aug 31, 10:16 PM HADT · 2218 days ago · 10 km deep · 5 km away
6. 1.8130 km WSW of Adak, AlaskaMon, Aug 31, 10:46 PM HADT · 2218 days ago · 25 km deep · 66 km away
7. 1.583 km W of Adak, AlaskaTue, Sep 1, 1:45 PM HADT · 2217 days ago · 14 km deep · 7 km away
8. 1.6143 km W of Adak, AlaskaWed, Sep 2, 4:32 PM HADT · 2216 days ago · 10 km deep · 68 km away
9. 3.8149 km WSW of Adak, AlaskaWed, Sep 2, 6:47 PM HADT · 2216 days ago · 35 km deep · 90 km away
10. 4.4138 km WSW of Adak, AlaskaThu, Sep 3, 2:35 PM HADT · 2215 days ago · 35 km deep · 79 km away · felt by 1
11. 2.182 km WSW of Adak, AlaskaThu, Sep 3, 3:34 PM HADT · 2215 days ago · 55 km deep · 40 km away
12. 1.8132 km WSW of Adak, AlaskaThu, Sep 3, 4:01 PM HADT · 2215 days ago · 21 km deep · 75 km away
13. 1.541 km SW of Adak, AlaskaThu, Sep 3, 8:43 PM HADT · 2215 days ago · 39 km deep · 61 km away
14. 1.662 km SSW of Adak, AlaskaThu, Sep 3, 11:01 PM HADT · 2215 days ago · 22 km deep · 79 km away
15. 1.637 km SSE of Adak, AlaskaFri, Sep 4, 3:06 AM HADT · 2215 days ago · 34 km deep · 97 km away
16. 4.6125 km W of Adak, AlaskaFri, Sep 4, 8:14 PM HADT · 2214 days ago · 18 km deep · 49 km away · felt by 1
17. 2.071 km SSW of Adak, AlaskaFri, Sep 4, 9:50 PM HADT · 2214 days ago · 42 km deep · 72 km away
18. 2.0127 km W of Adak, AlaskaFri, Sep 4, 11:41 PM HADT · 2214 days ago · 11 km deep · 50 km away
19. 1.8145 km WSW of Adak, AlaskaSat, Sep 5, 12:07 PM HADT · 2214 days ago · 7 km deep · 75 km away
20. 2.689 km WSW of Adak, AlaskaSat, Sep 5, 3:55 PM HADT · 2213 days ago · 64 km deep · 39 km away
21. 1.815 km S of Adak, AlaskaSun, Sep 6, 4:21 AM HADT · 2213 days ago · 66 km deep · 77 km away
22. 4.5170 km WSW of Adak, AlaskaSun, Sep 6, 8:30 AM HADT · 2213 days ago · 50 km deep · 100 km away
23. 2.6101 km SW of Adak, AlaskaSun, Sep 6, 12:40 PM HADT · 2212 days ago · 35 km deep · 71 km away
24. 1.7140 km WSW of Adak, AlaskaMon, Sep 7, 6:27 AM HADT · 2212 days ago · 25 km deep · 79 km away
25. 2.637 km SSE of Adak, AlaskaMon, Sep 7, 11:22 AM HADT · 2212 days ago · 46 km deep · 97 km away
26. 1.8145 km W of Adak, AlaskaMon, Sep 7, 2:45 PM HADT · 2211 days ago · 9 km deep · 69 km away
27. 2.651 km SW of Adak, AlaskaMon, Sep 7, 6:22 PM HADT · 2211 days ago · 57 km deep · 57 km away
28. 1.796 km SW of Adak, AlaskaTue, Sep 8, 5:54 AM HADT · 2211 days ago · 40 km deep · 61 km away
29. 1.5127 km W of Adak, AlaskaTue, Sep 8, 1:14 PM HADT · 2210 days ago · 14 km deep · 50 km away
30. 1.9107 km SW of Adak, AlaskaWed, Sep 9, 2:04 AM HADT · 2210 days ago · 20 km deep · 78 km away
31. 2.6140 km WSW of Adak, AlaskaWed, Sep 9, 12:29 PM HADT · 2209 days ago · 35 km deep · 83 km away
32. 1.872 km SSW of Adak, AlaskaWed, Sep 9, 1:35 PM HADT · 2209 days ago · 26 km deep · 77 km away
33. 1.743 km SSW of Adak, AlaskaWed, Sep 9, 4:01 PM HADT · 2209 days ago · 57 km deep · 70 km away
34. 1.537 km S of Adak, AlaskaWed, Sep 9, 7:37 PM HADT · 2209 days ago · 37 km deep · 83 km away
35. 1.9143 km WSW of Adak, AlaskaThu, Sep 10, 7:17 AM HADT · 2209 days ago · 23 km deep · 84 km away
36. 1.587 km WSW of Adak, AlaskaFri, Sep 11, 3:35 AM HADT · 2208 days ago · 27 km deep · 39 km away
37. 3.5103 km W of Adak, AlaskaFri, Sep 11, 9:58 AM HADT · 2208 days ago · 17 km deep · 26 km away
38. 3.3154 km WSW of Adak, AlaskaSat, Sep 12, 6:53 AM HADT · 2207 days ago · 10 km deep · 90 km away
39. 1.948 km SSE of Adak, AlaskaSat, Sep 12, 7:43 AM HADT · 2207 days ago · 26 km deep · 99 km away
40. 1.5141 km WSW of Adak, AlaskaSat, Sep 12, 4:54 PM HADT · 2206 days ago · 11 km deep · 73 km away
41. 1.676 km SW of Adak, AlaskaSun, Sep 13, 12:13 PM HADT · 2205 days ago · 38 km deep · 46 km away
42. 3.0146 km SW of Adak, AlaskaSun, Sep 13, 7:06 PM HADT · 2205 days ago · 29 km deep · 91 km away
43. 1.852 km S of Adak, AlaskaMon, Sep 14, 2:01 AM HADT · 2205 days ago · 26 km deep · 98 km away
44. 2.7109 km W of Adak, AlaskaMon, Sep 14, 7:11 PM HADT · 2204 days ago · 177 km deep · 34 km away
45. 1.551 km S of Adak, AlaskaTue, Sep 15, 2:55 AM HADT · 2204 days ago · 25 km deep · 92 km away
46. 1.688 km SW of Adak, AlaskaWed, Sep 16, 10:18 AM HADT · 2203 days ago · 29 km deep · 53 km away
47. 2.0111 km WSW of Adak, AlaskaThu, Sep 17, 9:19 AM HADT · 2202 days ago · 13 km deep · 45 km away
48. 1.556 km SSW of Adak, AlaskaThu, Sep 17, 11:46 AM HADT · 2202 days ago · 25 km deep · 79 km away
49. 1.7102 km SW of Adak, AlaskaThu, Sep 17, 4:04 PM HADT · 2201 days ago · 26 km deep · 68 km away
50. 2.0151 km WSW of Adak, AlaskaFri, Sep 18, 8:32 AM HADT · 2201 days ago · 22 km deep · 90 km away
51. 2.1126 km W of Adak, AlaskaFri, Sep 18, 1:07 PM HADT · 2200 days ago · 127 km deep · 49 km away
52. 2.0112 km W of Adak, AlaskaFri, Sep 18, 1:43 PM HADT · 2200 days ago · 90 km deep · 36 km away
53. 1.9119 km SW of Adak, AlaskaFri, Sep 18, 6:59 PM HADT · 2200 days ago · 26 km deep · 70 km away
54. 1.5141 km WSW of Adak, AlaskaFri, Sep 18, 10:42 PM HADT · 2200 days ago · 23 km deep · 79 km away
55. 2.679 km WSW of Adak, AlaskaSat, Sep 19, 1:49 AM HADT · 2200 days ago · 77 km deep · 16 km away
56. 1.982 km W of Adak, AlaskaMon, Sep 21, 12:55 AM HADT · 2198 days ago · 8 km deep · 5 km away
57. 2.717 km SE of Adak, AlaskaMon, Sep 21, 3:38 AM HADT · 2198 days ago · 80 km deep · 88 km away
58. 3.330 km SW of Adak, AlaskaMon, Sep 21, 4:34 PM HADT · 2197 days ago · 87 km deep · 55 km away
59. 2.736 km S of Adak, AlaskaTue, Sep 22, 9:18 AM HADT · 2197 days ago · 47 km deep · 79 km away
60. 3.0112 km SW of Adak, AlaskaTue, Sep 22, 1:49 PM HADT · 2196 days ago · 35 km deep · 70 km away

The first 60 of 143.

Before

1. 1.8129 km WSW of Adak, AlaskaSun, Aug 30, 2:40 PM HADT · 2219 days ago · 23 km deep · 65 km away
2. 1.7128 km WSW of Adak, AlaskaSun, Aug 30, 10:12 AM HADT · 2220 days ago · 24 km deep · 69 km away
3. 1.8127 km WSW of Adak, AlaskaSun, Aug 30, 9:46 AM HADT · 2220 days ago · 25 km deep · 63 km away
4. 2.551 km SW of Adak, AlaskaSun, Aug 30, 7:56 AM HADT · 2220 days ago · 33 km deep · 58 km away
5. 1.8128 km WSW of Adak, AlaskaSun, Aug 30, 4:14 AM HADT · 2220 days ago · 25 km deep · 65 km away
6. 1.7129 km WSW of Adak, AlaskaSun, Aug 30, 2:44 AM HADT · 2220 days ago · 25 km deep · 67 km away
7. 1.7130 km WSW of Adak, AlaskaSun, Aug 30, 2:26 AM HADT · 2220 days ago · 24 km deep · 67 km away
8. 4.3126 km WSW of Adak, AlaskaSun, Aug 30, 2:20 AM HADT · 2220 days ago · 34 km deep · 57 km away
9. 1.6130 km WSW of Adak, AlaskaSun, Aug 30, 2:12 AM HADT · 2220 days ago · 17 km deep · 68 km away
10. 1.843 km SSW of Adak, AlaskaSat, Aug 29, 4:27 PM HADT · 2220 days ago · 62 km deep · 67 km away
11. 1.6127 km W of Adak, AlaskaSat, Aug 29, 12:13 AM HADT · 2221 days ago · 12 km deep · 51 km away
12. 2.618 km S of Adak, AlaskaFri, Aug 28, 11:19 PM HADT · 2221 days ago · 66 km deep · 82 km away
13. 1.557 km WSW of Adak, AlaskaFri, Aug 28, 10:03 PM HADT · 2221 days ago · 57 km deep · 33 km away
14. 1.7157 km WSW of Adak, AlaskaFri, Aug 28, 9:25 PM HADT · 2221 days ago · 22 km deep · 98 km away
15. 3.6Andreanof Islands, Aleutian Islands, AlaskaFri, Aug 28, 3:19 PM HADT · 2221 days ago · 35 km deep · 71 km away
16. 1.582 km W of Adak, AlaskaFri, Aug 28, 4:07 AM HADT · 2222 days ago · 4 km deep · 5 km away
17. 1.876 km SW of Adak, AlaskaThu, Aug 27, 12:30 PM HADT · 2222 days ago · 39 km deep · 46 km away
18. 1.651 km SW of Adak, AlaskaThu, Aug 27, 11:38 AM HADT · 2223 days ago · 31 km deep · 59 km away
19. 1.914 km WNW of Adak, AlaskaThu, Aug 27, 4:22 AM HADT · 2223 days ago · 188 km deep · 64 km away
20. 2.028 km NE of Adak, AlaskaThu, Aug 27, 4:20 AM HADT · 2223 days ago · 205 km deep · 99 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91119321. Read Mon, Sep 28, 2026, 8:39 AM UTC.