M1.7 earthquake 171 km W of Adak, Alaska

Magnitude

1.7 (ml), micro

Local time

Mon, Nov 23, 2020, 12:47 AM HAST

UTC

2020-11-23 10:47:57 UTC

Depth

7.4 km (4.6 mi), shallow

Epicenter

51.659° N, 179.093° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.1 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.44

Depth from

From location

Station coverage gap

289°, poorly surrounded by stations

Stations used

7

After

1. 1.878 km W of Adak, AlaskaMon, Nov 23, 1:25 AM HAST · 2137 days ago · -2 km deep · 93 km away
2. 3.0264 km W of Adak, AlaskaTue, Nov 24, 3:25 AM GMT+12 · 2137 days ago · 113 km deep · 95 km away
3. 2.078 km W of Adak, AlaskaMon, Nov 23, 7:52 AM HAST · 2137 days ago · 5 km deep · 93 km away
4. 1.878 km W of Adak, AlaskaMon, Nov 23, 7:53 AM HAST · 2137 days ago · 4 km deep · 94 km away
5. 1.581 km W of Adak, AlaskaTue, Nov 24, 3:08 PM HAST · 2136 days ago · 6 km deep · 91 km away
6. 2.8157 km WSW of Adak, AlaskaWed, Nov 25, 1:53 AM HAST · 2135 days ago · 33 km deep · 68 km away
7. 2.8242 km WSW of Adak, AlaskaWed, Nov 25, 8:40 PM GMT-12 · 2134 days ago · 35 km deep · 80 km away
8. 2.7104 km SW of Adak, AlaskaSun, Nov 29, 1:44 AM HAST · 2131 days ago · 35 km deep · 95 km away
9. 4.9182 km WSW of Adak, AlaskaSun, Nov 29, 5:57 AM HAST · 2131 days ago · 37 km deep · 61 km away
10. 3.8192 km WSW of Adak, AlaskaSun, Nov 29, 7:17 PM HAST · 2131 days ago · 31 km deep · 50 km away
11. 1.9133 km WSW of Adak, AlaskaSun, Nov 29, 9:10 PM HAST · 2131 days ago · 13 km deep · 45 km away
12. 2.7206 km WSW of Adak, AlaskaTue, Dec 1, 10:47 PM HAST · 2128 days ago · 6 km deep · 87 km away
13. 1.8208 km WSW of Adak, AlaskaWed, Dec 2, 5:23 PM HAST · 2128 days ago · 19 km deep · 45 km away
14. 2.0166 km WSW of Adak, AlaskaThu, Dec 3, 2:49 PM HAST · 2127 days ago · 26 km deep · 33 km away
15. 2.0118 km WSW of Adak, AlaskaFri, Dec 4, 10:26 AM HAST · 2126 days ago · 16 km deep · 67 km away
16. 2.7256 km W of Adak, AlaskaSat, Dec 5, 4:12 PM GMT+12 · 2126 days ago · 69 km deep · 85 km away
17. 3.0234 km W of Adak, AlaskaSun, Dec 6, 6:34 PM HAST · 2124 days ago · 106 km deep · 66 km away
18. 2.0121 km WSW of Adak, AlaskaMon, Dec 7, 9:19 AM HAST · 2123 days ago · 23 km deep · 58 km away
19. 3.8260 km WSW of Adak, AlaskaTue, Dec 8, 8:38 AM GMT+12 · 2123 days ago · 5 km deep · 93 km away
20. 2.1220 km WSW of Adak, AlaskaMon, Dec 7, 9:04 PM HAST · 2123 days ago · 19 km deep · 61 km away
21. 1.9Andreanof Islands, Aleutian Islands, AlaskaMon, Dec 7, 9:24 PM HAST · 2122 days ago · 22 km deep · 39 km away
22. 1.9200 km WSW of Adak, AlaskaTue, Dec 8, 12:48 AM HAST · 2122 days ago · 22 km deep · 44 km away
23. 3.5187 km W of Adak, AlaskaWed, Dec 9, 12:41 AM HAST · 2121 days ago · 44 km deep · 19 km away
24. 4.5221 km WSW of Adak, AlaskaThu, Dec 10, 2:51 AM HAST · 2120 days ago · 10 km deep · 90 km away
25. 1.8102 km WSW of Adak, AlaskaThu, Dec 10, 9:18 AM HAST · 2120 days ago · 22 km deep · 82 km away
26. 2.3180 km WSW of Adak, AlaskaFri, Dec 11, 11:32 AM HAST · 2119 days ago · 74 km deep · 16 km away
27. 3.4214 km WSW of Adak, AlaskaFri, Dec 11, 2:03 PM HAST · 2119 days ago · 21 km deep · 80 km away
28. 1.9155 km WSW of Adak, AlaskaFri, Dec 11, 7:36 PM HAST · 2119 days ago · 22 km deep · 70 km away
29. 2.9191 km WSW of Adak, AlaskaSat, Dec 12, 10:33 PM HAST · 2117 days ago · 30 km deep · 68 km away
30. 1.6136 km W of Adak, AlaskaSun, Dec 13, 1:59 AM HAST · 2117 days ago · 8 km deep · 36 km away
31. 1.993 km WSW of Adak, AlaskaSun, Dec 13, 2:16 AM HAST · 2117 days ago · 43 km deep · 89 km away
32. 3.1241 km WSW of Adak, AlaskaSun, Dec 13, 3:50 PM GMT-12 · 2117 days ago · 35 km deep · 73 km away
33. 1.680 km W of Adak, AlaskaSun, Dec 13, 7:40 PM HAST · 2117 days ago · 2 km deep · 92 km away
34. 1.9132 km WSW of Adak, AlaskaMon, Dec 14, 3:16 AM HAST · 2116 days ago · 73 km deep · 54 km away
35. 2.882 km W of Adak, AlaskaMon, Dec 14, 4:41 PM HAST · 2116 days ago · 10 km deep · 89 km away
36. 2.7192 km WSW of Adak, AlaskaMon, Dec 14, 8:16 PM HAST · 2116 days ago · 28 km deep · 38 km away
37. 2.5240 km WSW of Adak, AlaskaWed, Dec 16, 4:19 AM GMT+12 · 2115 days ago · 15 km deep · 71 km away
38. 1.8112 km WSW of Adak, AlaskaTue, Dec 15, 6:43 AM HAST · 2115 days ago · 13 km deep · 68 km away
39. 5.0124 km SW of Adak, AlaskaWed, Dec 16, 9:13 AM HAST · 2114 days ago · 42 km deep · 80 km away · felt by 1
40. 3.2136 km SW of Adak, AlaskaWed, Dec 16, 9:22 AM HAST · 2114 days ago · 35 km deep · 83 km away
41. 2.0133 km SW of Adak, AlaskaWed, Dec 16, 10:13 AM HAST · 2114 days ago · 26 km deep · 82 km away
42. 1.5126 km WSW of Adak, AlaskaFri, Dec 18, 11:08 PM HAST · 2111 days ago · 25 km deep · 62 km away
43. 1.9131 km WSW of Adak, AlaskaSat, Dec 19, 2:13 PM HAST · 2111 days ago · 23 km deep · 73 km away
44. 1.8104 km SW of Adak, AlaskaSat, Dec 19, 9:07 PM HAST · 2111 days ago · 44 km deep · 100 km away
45. 1.8109 km SW of Adak, AlaskaSat, Dec 19, 9:08 PM HAST · 2111 days ago · 48 km deep · 99 km away
46. 1.7156 km WSW of Adak, AlaskaSun, Dec 20, 7:42 PM HAST · 2110 days ago · 14 km deep · 27 km away
47. 3.0254 km WSW of Adak, AlaskaMon, Dec 21, 7:56 PM GMT+12 · 2109 days ago · 12 km deep · 94 km away
48. 1.782 km W of Adak, AlaskaSun, Dec 20, 10:53 PM HAST · 2109 days ago · 7 km deep · 90 km away
49. 1.9152 km WSW of Adak, AlaskaMon, Dec 21, 4:37 AM HAST · 2109 days ago · 11 km deep · 28 km away
50. 2.7112 km W of Adak, AlaskaMon, Dec 21, 11:05 AM HAST · 2109 days ago · 107 km deep · 59 km away
51. 2.184 km W of Adak, AlaskaMon, Dec 21, 3:05 PM HAST · 2109 days ago · 94 km deep · 87 km away
52. 2.2148 km WSW of Adak, AlaskaWed, Dec 23, 1:14 AM HAST · 2107 days ago · 58 km deep · 38 km away
53. 2.6139 km WSW of Adak, AlaskaWed, Dec 23, 2:49 AM HAST · 2107 days ago · 35 km deep · 72 km away
54. 2.0101 km WSW of Adak, AlaskaWed, Dec 23, 4:44 AM HAST · 2107 days ago · 64 km deep · 74 km away
55. 3.1253 km WSW of Adak, AlaskaThu, Dec 24, 10:29 AM GMT+12 · 2107 days ago · 10 km deep · 95 km away
56. 3.0183 km WSW of Adak, AlaskaThu, Dec 24, 5:26 AM HAST · 2106 days ago · 35 km deep · 60 km away
57. 3.9191 km WSW of Adak, AlaskaFri, Dec 25, 2:25 AM HAST · 2105 days ago · 83 km deep · 34 km away
58. 1.9129 km WSW of Adak, AlaskaFri, Dec 25, 9:20 AM HAST · 2105 days ago · 26 km deep · 73 km away
59. 1.8115 km WSW of Adak, AlaskaFri, Dec 25, 3:37 PM HAST · 2105 days ago · 29 km deep · 72 km away
60. 2.090 km W of Adak, AlaskaSat, Dec 26, 2:25 AM HAST · 2104 days ago · 11 km deep · 81 km away

The first 60 of 109.

Before

1. 2.5133 km W of Adak, AlaskaSat, Nov 21, 5:03 PM HAST · 2139 days ago · 173 km deep · 58 km away
2. 1.7Andreanof Islands, Aleutian Islands, AlaskaSat, Nov 21, 1:12 AM HAST · 2139 days ago · 10 km deep · 73 km away
3. 1.8102 km WSW of Adak, AlaskaFri, Nov 20, 7:31 PM HAST · 2140 days ago · 52 km deep · 83 km away
4. 2.1122 km WSW of Adak, AlaskaFri, Nov 20, 10:05 AM HAST · 2140 days ago · 17 km deep · 71 km away
5. 1.9139 km SW of Adak, AlaskaWed, Nov 18, 5:49 PM HAST · 2142 days ago · 27 km deep · 78 km away
6. 2.0130 km WSW of Adak, AlaskaWed, Nov 18, 4:07 PM HAST · 2142 days ago · 25 km deep · 62 km away
7. 3.6161 km SW of Adak, AlaskaWed, Nov 18, 4:54 AM HAST · 2142 days ago · 35 km deep · 75 km away
8. 2.6192 km WSW of Adak, AlaskaWed, Nov 18, 2:16 AM HAST · 2142 days ago · 33 km deep · 43 km away
9. 2.0135 km WSW of Adak, AlaskaMon, Nov 16, 8:53 PM HAST · 2144 days ago · 26 km deep · 54 km away
10. 2.690 km WSW of Adak, AlaskaSun, Nov 15, 5:30 AM HAST · 2145 days ago · 74 km deep · 85 km away
11. 1.7103 km WSW of Adak, AlaskaSun, Nov 15, 2:28 AM HAST · 2145 days ago · 32 km deep · 74 km away
12. 1.9158 km W of Adak, AlaskaSat, Nov 14, 2:20 PM HAST · 2146 days ago · 7 km deep · 13 km away
13. 2.581 km W of Adak, AlaskaSat, Nov 14, 10:42 AM HAST · 2146 days ago · 4 km deep · 91 km away
14. 3.1128 km SW of Adak, AlaskaSat, Nov 14, 4:16 AM HAST · 2146 days ago · 29 km deep · 86 km away
15. 1.9131 km WSW of Adak, AlaskaFri, Nov 13, 4:00 PM HAST · 2147 days ago · 10 km deep · 44 km away
16. 2.9136 km WSW of Adak, AlaskaFri, Nov 13, 1:41 PM HAST · 2147 days ago · 33 km deep · 73 km away
17. 1.9154 km WSW of Adak, AlaskaFri, Nov 13, 4:48 AM HAST · 2147 days ago · 60 km deep · 35 km away
18. 1.9153 km WSW of Adak, AlaskaFri, Nov 13, 4:15 AM HAST · 2147 days ago · 21 km deep · 67 km away
19. 2.1130 km WSW of Adak, AlaskaFri, Nov 13, 1:07 AM HAST · 2147 days ago · 7 km deep · 44 km away
20. 1.6130 km WSW of Adak, AlaskaThu, Nov 12, 7:03 PM HAST · 2148 days ago · 7 km deep · 45 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91147106. Read Wed, Sep 30, 2026, 6:46 PM UTC.