M1.8 earthquake 50 km SW of Adak, Alaska

Magnitude

1.8 (ML, local (Richter)), micro

Magnitude from

Alaska Earthquake Center

Local time

Wed, Sep 20, 2017, 8:42 PM HADT

UTC

2017-09-21 05:42:43 UTC

Depth

43.8 km (27.2 mi), shallow

Epicenter

51.553° N, 177.150° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

9

After

1. 2.373 km SE of Adak, AlaskaFri, Sep 22, 8:34 AM HADT · 3296 days ago · 44 km deep · 87 km away
2. 1.9125 km W of Adak, AlaskaFri, Sep 22, 10:32 PM HADT · 3296 days ago · 17 km deep · 89 km away
3. 1.563 km SW of Adak, AlaskaSat, Sep 23, 1:57 AM HADT · 3296 days ago · 19 km deep · 15 km away
4. 2.358 km ESE of Adak, AlaskaSat, Sep 23, 2:43 AM HADT · 3296 days ago · 45 km deep · 90 km away
5. 2.879 km SE of Adak, AlaskaSat, Sep 23, 10:17 AM HADT · 3295 days ago · 35 km deep · 90 km away
6. 2.297 km W of Adak, AlaskaSat, Sep 23, 11:13 AM HADT · 3295 days ago · 93 km deep · 70 km away
7. 2.362 km S of Adak, AlaskaSat, Sep 23, 6:15 PM HADT · 3295 days ago · 13 km deep · 53 km away
8. 1.9129 km WSW of Adak, AlaskaSat, Sep 23, 8:52 PM HADT · 3295 days ago · 13 km deep · 90 km away
9. 1.648 km S of Adak, AlaskaSat, Sep 23, 9:48 PM HADT · 3295 days ago · 21 km deep · 44 km away
10. 1.965 km SE of Adak, AlaskaSun, Sep 24, 4:32 AM HADT · 3295 days ago · 35 km deep · 85 km away
11. 1.7131 km W of Adak, AlaskaSun, Sep 24, 9:52 AM HADT · 3294 days ago · 16 km deep · 98 km away
12. 3.9130 km WSW of Adak, AlaskaSun, Sep 24, 11:36 AM HADT · 3294 days ago · 11 km deep · 87 km away
13. 1.9125 km WSW of Adak, AlaskaMon, Sep 25, 12:16 AM HADT · 3294 days ago · 16 km deep · 87 km away
14. 2.792 km WSW of Adak, AlaskaMon, Sep 25, 12:40 AM HADT · 3294 days ago · 19 km deep · 56 km away
15. 1.8127 km W of Adak, AlaskaMon, Sep 25, 2:46 AM HADT · 3294 days ago · 14 km deep · 91 km away
16. 1.943 km SW of Adak, AlaskaMon, Sep 25, 4:34 AM HADT · 3294 days ago · 47 km deep · 7 km away
17. 2.0128 km W of Adak, AlaskaMon, Sep 25, 9:59 AM HADT · 3293 days ago · 16 km deep · 93 km away
18. 1.9103 km WSW of Adak, AlaskaTue, Sep 26, 3:27 AM HADT · 3293 days ago · 43 km deep · 59 km away
19. 1.9126 km W of Adak, AlaskaTue, Sep 26, 3:22 PM HADT · 3292 days ago · 17 km deep · 92 km away
20. 2.0123 km WSW of Adak, AlaskaTue, Sep 26, 6:19 PM HADT · 3292 days ago · 13 km deep · 86 km away
21. 1.8123 km W of Adak, AlaskaTue, Sep 26, 6:45 PM HADT · 3292 days ago · 18 km deep · 88 km away
22. 1.970 km SW of Adak, AlaskaWed, Sep 27, 12:56 PM HADT · 3291 days ago · 54 km deep · 21 km away
23. 1.7126 km WSW of Adak, AlaskaWed, Sep 27, 1:38 PM HADT · 3291 days ago · 13 km deep · 89 km away
24. 1.5Andreanof Islands, Aleutian Islands, AlaskaWed, Sep 27, 11:58 PM HADT · 3291 days ago · 16 km deep · 94 km away
25. 1.569 km WSW of Adak, AlaskaThu, Sep 28, 1:43 AM HADT · 3291 days ago · 69 km deep · 26 km away
26. 1.5108 km WSW of Adak, AlaskaThu, Sep 28, 2:05 AM HADT · 3291 days ago · 44 km deep · 68 km away
27. 2.3126 km WSW of Adak, AlaskaThu, Sep 28, 3:43 AM HADT · 3291 days ago · 7 km deep · 89 km away
28. 3.3126 km W of Adak, AlaskaThu, Sep 28, 12:43 PM HADT · 3290 days ago · 13 km deep · 90 km away
29. 1.6122 km WSW of Adak, AlaskaThu, Sep 28, 3:02 PM HADT · 3290 days ago · 12 km deep · 85 km away
30. 1.842 km SSE of Adak, AlaskaThu, Sep 28, 11:32 PM HADT · 3290 days ago · 1 km deep · 59 km away
31. 2.8128 km WSW of Adak, AlaskaFri, Sep 29, 2:03 AM HADT · 3290 days ago · 16 km deep · 86 km away
32. 2.834 km ENE of Adak, AlaskaFri, Sep 29, 3:58 AM HADT · 3290 days ago · 14 km deep · 84 km away
33. 2.036 km NE of Adak, AlaskaFri, Sep 29, 5:06 AM HADT · 3290 days ago · 5 km deep · 86 km away
34. 3.0134 km WSW of Adak, AlaskaFri, Sep 29, 6:40 AM HADT · 3289 days ago · 14 km deep · 94 km away
35. 2.939 km NE of Adak, AlaskaFri, Sep 29, 7:43 AM HADT · 3289 days ago · 10 km deep · 90 km away
36. 2.7125 km WSW of Adak, AlaskaFri, Sep 29, 8:01 AM HADT · 3289 days ago · 16 km deep · 85 km away
37. 2.2124 km WSW of Adak, AlaskaFri, Sep 29, 1:14 PM HADT · 3289 days ago · 7 km deep · 86 km away
38. 2.143 km NNE of Adak, AlaskaFri, Sep 29, 7:39 PM HADT · 3289 days ago · 166 km deep · 92 km away
39. 1.7Andreanof Islands, Aleutian Islands, AlaskaFri, Sep 29, 10:45 PM HADT · 3289 days ago · 63 km deep · 53 km away
40. 3.1123 km WSW of Adak, AlaskaSat, Sep 30, 12:43 AM HADT · 3289 days ago · 13 km deep · 86 km away
41. 1.6112 km WSW of Adak, AlaskaSat, Sep 30, 8:39 AM HADT · 3288 days ago · 25 km deep · 68 km away
42. 2.095 km WSW of Adak, AlaskaSat, Sep 30, 9:26 AM HADT · 3288 days ago · 42 km deep · 50 km away
43. 1.936 km NE of Adak, AlaskaSat, Sep 30, 10:13 AM HADT · 3288 days ago · 7 km deep · 86 km away
44. 1.5126 km W of Adak, AlaskaSat, Sep 30, 3:34 PM HADT · 3288 days ago · 7 km deep · 92 km away
45. 1.5125 km W of Adak, AlaskaSat, Sep 30, 3:41 PM HADT · 3288 days ago · 14 km deep · 91 km away
46. 1.955 km ESE of Adak, AlaskaSat, Sep 30, 7:29 PM HADT · 3288 days ago · 51 km deep · 84 km away
47. 2.1130 km WSW of Adak, AlaskaSun, Oct 1, 2:22 AM HADT · 3288 days ago · 11 km deep · 90 km away
48. 1.9130 km W of Adak, AlaskaSun, Oct 1, 8:37 PM HADT · 3287 days ago · 15 km deep · 96 km away
49. 2.3124 km W of Adak, AlaskaMon, Oct 2, 11:17 AM HADT · 3286 days ago · 12 km deep · 89 km away
50. 2.3123 km W of Adak, AlaskaMon, Oct 2, 9:16 PM HADT · 3286 days ago · 5 km deep · 87 km away
51. 2.1124 km W of Adak, AlaskaMon, Oct 2, 9:28 PM HADT · 3286 days ago · 15 km deep · 88 km away
52. 2.1124 km WSW of Adak, AlaskaTue, Oct 3, 12:34 AM HADT · 3286 days ago · 11 km deep · 86 km away
53. 2.7121 km WSW of Adak, AlaskaTue, Oct 3, 1:46 AM HADT · 3286 days ago · 14 km deep · 77 km away
54. 2.6122 km WSW of Adak, AlaskaTue, Oct 3, 4:51 AM HADT · 3286 days ago · 19 km deep · 75 km away
55. 2.7124 km WSW of Adak, AlaskaTue, Oct 3, 6:03 AM HADT · 3285 days ago · 20 km deep · 84 km away
56. 2.173 km SW of Adak, AlaskaTue, Oct 3, 5:47 PM HADT · 3285 days ago · 25 km deep · 25 km away
57. 2.8116 km WSW of Adak, AlaskaThu, Oct 5, 3:21 AM HADT · 3284 days ago · 20 km deep · 70 km away
58. 2.660 km SSW of Adak, AlaskaThu, Oct 5, 4:34 AM HADT · 3284 days ago · 39 km deep · 17 km away
59. 3.0134 km WSW of Adak, AlaskaFri, Oct 6, 1:26 AM HADT · 3283 days ago · 29 km deep · 86 km away
60. 2.2129 km WSW of Adak, AlaskaFri, Oct 6, 2:10 AM HADT · 3283 days ago · 8 km deep · 92 km away

The first 60 of at least 200.

Before

1. 2.789 km WSW of Adak, AlaskaWed, Sep 20, 2:18 AM HADT · 3299 days ago · 27 km deep · 46 km away
2. 2.5125 km W of Adak, AlaskaTue, Sep 19, 6:28 PM HADT · 3299 days ago · 13 km deep · 89 km away
3. 2.2128 km W of Adak, AlaskaTue, Sep 19, 7:02 AM HADT · 3299 days ago · 10 km deep · 95 km away
4. 2.6128 km WSW of Adak, AlaskaTue, Sep 19, 6:37 AM HADT · 3299 days ago · 19 km deep · 91 km away
5. 1.8126 km W of Adak, AlaskaMon, Sep 18, 2:47 PM HADT · 3300 days ago · 28 km deep · 89 km away
6. 2.157 km SE of Adak, AlaskaMon, Sep 18, 7:24 AM HADT · 3300 days ago · 49 km deep · 81 km away
7. 4.177 km WSW of Adak, AlaskaMon, Sep 18, 6:25 AM HADT · 3300 days ago · 71 km deep · 44 km away
8. 4.1127 km WSW of Adak, AlaskaMon, Sep 18, 5:32 AM HADT · 3300 days ago · 14 km deep · 87 km away
9. 2.7127 km WSW of Adak, AlaskaSun, Sep 17, 8:26 AM HADT · 3301 days ago · 14 km deep · 85 km away
10. 2.686 km WSW of Adak, AlaskaSun, Sep 17, 4:28 AM HADT · 3302 days ago · 34 km deep · 40 km away
11. 2.2129 km WSW of Adak, AlaskaSun, Sep 17, 1:57 AM HADT · 3302 days ago · 13 km deep · 93 km away
12. 2.749 km SE of Adak, AlaskaSun, Sep 17, 12:19 AM HADT · 3302 days ago · 46 km deep · 72 km away
13. 1.7128 km W of Adak, AlaskaSat, Sep 16, 3:44 PM HADT · 3302 days ago · 16 km deep · 92 km away
14. 2.6147 km SW of Adak, AlaskaSat, Sep 16, 3:07 PM HADT · 3302 days ago · 22 km deep · 97 km away
15. 2.3130 km WSW of Adak, AlaskaSat, Sep 16, 3:07 AM HADT · 3303 days ago · 23 km deep · 83 km away
16. 2.0128 km W of Adak, AlaskaFri, Sep 15, 12:04 PM HADT · 3303 days ago · 14 km deep · 94 km away
17. 1.9124 km WSW of Adak, AlaskaThu, Sep 14, 2:35 AM HADT · 3305 days ago · 21 km deep · 86 km away
18. 3.2126 km WSW of Adak, AlaskaWed, Sep 13, 8:36 PM HADT · 3305 days ago · 13 km deep · 87 km away
19. 2.3126 km WSW of Adak, AlaskaWed, Sep 13, 3:06 PM HADT · 3305 days ago · 13 km deep · 88 km away
20. 1.7124 km WSW of Adak, AlaskaWed, Sep 13, 3:00 PM HADT · 3305 days ago · 10 km deep · 87 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak017c4p3vv3 (also filed as ak16911551). Read Fri, Oct 2, 2026, 1:48 AM UTC.