M1.7 earthquake 81 km W of Adak, Alaska

Magnitude

1.7 (ML, local (Richter)), micro

Magnitude from

AV

Local time

Thu, Jul 16, 2020, 6:08 PM HADT

UTC

2020-07-17 03:08:02 UTC

Depth

4.2 km (2.6 mi), shallow

Epicenter

51.861° N, 177.811° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.27

Depth from

From location

Station coverage gap

154°

Stations used

9

After

1. 1.8136 km WSW of Adak, AlaskaFri, Jul 17, 4:49 AM HADT · 2267 days ago · 25 km deep · 71 km away
2. 3.879 km SW of Adak, AlaskaFri, Jul 17, 12:38 PM HADT · 2267 days ago · 32 km deep · 59 km away
3. 1.822 km SE of Adak, AlaskaSat, Jul 18, 10:45 AM HADT · 2266 days ago · 208 km deep · 95 km away
4. 1.8115 km WSW of Adak, AlaskaSun, Jul 19, 6:14 AM HADT · 2265 days ago · 13 km deep · 42 km away
5. 1.670 km SW of Adak, AlaskaSun, Jul 19, 6:29 AM HADT · 2265 days ago · 47 km deep · 61 km away
6. 1.9126 km WSW of Adak, AlaskaTue, Jul 21, 3:18 AM HADT · 2263 days ago · 74 km deep · 50 km away
7. 1.9149 km WSW of Adak, AlaskaTue, Jul 21, 1:08 PM HADT · 2263 days ago · 4 km deep · 77 km away
8. 1.6142 km SW of Adak, AlaskaTue, Jul 21, 3:15 PM HADT · 2263 days ago · 26 km deep · 91 km away
9. 1.898 km WSW of Adak, AlaskaTue, Jul 21, 8:51 PM HADT · 2262 days ago · 40 km deep · 51 km away
10. 4.9170 km WSW of Adak, AlaskaWed, Jul 22, 2:06 PM HADT · 2262 days ago · 45 km deep · 97 km away
11. 1.968 km SSW of Adak, AlaskaWed, Jul 22, 6:27 PM HADT · 2261 days ago · 26 km deep · 80 km away
12. 2.4123 km SW of Adak, AlaskaWed, Jul 22, 9:55 PM HADT · 2261 days ago · 16 km deep · 79 km away
13. 1.955 km SW of Adak, AlaskaWed, Jul 22, 10:30 PM HADT · 2261 days ago · 39 km deep · 66 km away
14. 2.647 km SSW of Adak, AlaskaWed, Jul 22, 11:34 PM HADT · 2261 days ago · 22 km deep · 68 km away
15. 1.547 km SW of Adak, AlaskaThu, Jul 23, 12:22 AM HADT · 2261 days ago · 26 km deep · 66 km away
16. 2.1141 km WSW of Adak, AlaskaThu, Jul 23, 5:18 AM HADT · 2261 days ago · 26 km deep · 78 km away
17. 4.3120 km WNW of Adak, AlaskaThu, Jul 23, 1:08 PM HADT · 2261 days ago · 234 km deep · 66 km away
18. 1.679 km W of Adak, AlaskaThu, Jul 23, 3:50 PM HADT · 2261 days ago · 1 km deep · 2 km away
19. 3.848 km S of Adak, AlaskaThu, Jul 23, 11:15 PM HADT · 2260 days ago · 42 km deep · 87 km away
20. 1.638 km SSW of Adak, AlaskaFri, Jul 24, 5:17 AM HADT · 2260 days ago · 34 km deep · 80 km away
21. 1.976 km W of Adak, AlaskaFri, Jul 24, 10:33 AM HADT · 2260 days ago · 103 km deep · 6 km away
22. 1.865 km WSW of Adak, AlaskaFri, Jul 24, 4:50 PM HADT · 2259 days ago · 72 km deep · 30 km away
23. 1.981 km WSW of Adak, AlaskaSat, Jul 25, 3:24 AM HADT · 2259 days ago · 65 km deep · 30 km away
24. 1.6132 km WSW of Adak, AlaskaSun, Jul 26, 9:56 AM HADT · 2258 days ago · 7 km deep · 54 km away
25. 1.633 km SSW of Adak, AlaskaMon, Jul 27, 5:15 AM HADT · 2257 days ago · 62 km deep · 75 km away
26. 1.798 km W of Adak, AlaskaMon, Jul 27, 2:29 PM HADT · 2257 days ago · 134 km deep · 18 km away
27. 1.577 km SW of Adak, AlaskaMon, Jul 27, 8:58 PM HADT · 2256 days ago · 22 km deep · 53 km away
28. 1.853 km W of Adak, AlaskaTue, Jul 28, 7:54 AM HADT · 2256 days ago · 21 km deep · 29 km away
29. 1.583 km SW of Adak, AlaskaTue, Jul 28, 10:31 AM HADT · 2256 days ago · 36 km deep · 50 km away
30. 1.9124 km W of Adak, AlaskaTue, Jul 28, 1:55 PM HADT · 2256 days ago · 186 km deep · 45 km away
31. 2.0147 km WSW of Adak, AlaskaTue, Jul 28, 5:19 PM HADT · 2255 days ago · 26 km deep · 85 km away
32. 1.658 km W of Adak, AlaskaWed, Jul 29, 1:30 AM HADT · 2255 days ago · 7 km deep · 23 km away
33. 1.5121 km WSW of Adak, AlaskaWed, Jul 29, 1:40 AM HADT · 2255 days ago · 30 km deep · 50 km away
34. 1.9153 km WSW of Adak, AlaskaWed, Jul 29, 4:49 AM HADT · 2255 days ago · 53 km deep · 83 km away
35. 1.573 km SW of Adak, AlaskaWed, Jul 29, 9:26 PM HADT · 2254 days ago · 35 km deep · 54 km away
36. 1.8105 km WSW of Adak, AlaskaThu, Jul 30, 4:24 PM HADT · 2253 days ago · 19 km deep · 50 km away
37. 1.782 km W of Adak, AlaskaThu, Jul 30, 4:56 PM HADT · 2253 days ago · 10 km deep · 3 km away
38. 1.768 km SW of Adak, AlaskaThu, Jul 30, 5:10 PM HADT · 2253 days ago · 26 km deep · 63 km away
39. 1.6122 km WSW of Adak, AlaskaThu, Jul 30, 5:46 PM HADT · 2253 days ago · 26 km deep · 60 km away
40. 1.6124 km SW of Adak, AlaskaThu, Jul 30, 10:16 PM HADT · 2253 days ago · 22 km deep · 81 km away
41. 1.8134 km SW of Adak, AlaskaFri, Jul 31, 5:34 AM HADT · 2253 days ago · 22 km deep · 82 km away
42. 1.5118 km WSW of Adak, AlaskaFri, Jul 31, 12:48 PM HADT · 2253 days ago · 23 km deep · 66 km away
43. 1.843 km WNW of Adak, AlaskaFri, Jul 31, 5:24 PM HADT · 2252 days ago · 13 km deep · 46 km away
44. 2.939 km WSW of Adak, AlaskaSat, Aug 1, 2:22 AM HADT · 2252 days ago · 17 km deep · 52 km away
45. 2.6124 km SW of Adak, AlaskaSat, Aug 1, 9:19 AM HADT · 2252 days ago · 35 km deep · 80 km away
46. 1.551 km W of Adak, AlaskaSat, Aug 1, 11:54 AM HADT · 2252 days ago · 7 km deep · 30 km away
47. 3.9151 km WSW of Adak, AlaskaSun, Aug 2, 4:58 AM HADT · 2251 days ago · 35 km deep · 92 km away
48. 3.41 km NW of Adak, AlaskaSun, Aug 2, 5:55 AM HADT · 2251 days ago · 93 km deep · 80 km away
49. 1.677 km WSW of Adak, AlaskaSun, Aug 2, 7:58 AM HADT · 2251 days ago · 40 km deep · 39 km away
50. 1.8143 km WSW of Adak, AlaskaSun, Aug 2, 6:53 PM HADT · 2250 days ago · 23 km deep · 85 km away
51. 1.787 km SW of Adak, AlaskaSun, Aug 2, 7:00 PM HADT · 2250 days ago · 35 km deep · 48 km away
52. 3.6139 km WSW of Adak, AlaskaMon, Aug 3, 3:19 AM HADT · 2250 days ago · 29 km deep · 80 km away
53. 2.818 km ENE of Adak, AlaskaMon, Aug 3, 4:41 AM HADT · 2250 days ago · 106 km deep · 99 km away
54. 2.584 km SW of Adak, AlaskaMon, Aug 3, 10:21 AM HADT · 2250 days ago · 36 km deep · 52 km away
55. 1.586 km W of Adak, AlaskaMon, Aug 3, 5:54 PM HADT · 2249 days ago · 5 km deep · 5 km away
56. 1.5142 km WSW of Adak, AlaskaTue, Aug 4, 12:05 AM HADT · 2249 days ago · 28 km deep · 85 km away
57. 2.712 km S of Adak, AlaskaTue, Aug 4, 3:59 AM HADT · 2249 days ago · 84 km deep · 82 km away
58. 1.539 km S of Adak, AlaskaTue, Aug 4, 7:04 AM HADT · 2249 days ago · 40 km deep · 87 km away
59. 1.755 km SW of Adak, AlaskaTue, Aug 4, 11:38 AM HADT · 2249 days ago · 29 km deep · 55 km away
60. 2.7125 km WSW of Adak, AlaskaWed, Aug 5, 3:45 AM HADT · 2248 days ago · 35 km deep · 68 km away

The first 60 of 186.

Before

1. 2.338 km WSW of Adak, AlaskaThu, Jul 16, 12:10 PM HADT · 2268 days ago · 15 km deep · 45 km away
2. 3.732 km S of Adak, AlaskaThu, Jul 16, 7:07 AM HADT · 2268 days ago · 54 km deep · 84 km away
3. 1.584 km W of Adak, AlaskaThu, Jul 16, 2:54 AM HADT · 2268 days ago · 8 km deep · 4 km away
4. 1.750 km W of Adak, AlaskaThu, Jul 16, 1:33 AM HADT · 2268 days ago · 8 km deep · 31 km away
5. 1.6122 km SW of Adak, AlaskaWed, Jul 15, 11:01 PM HADT · 2268 days ago · 25 km deep · 96 km away
6. 1.650 km W of Adak, AlaskaWed, Jul 15, 11:07 AM HADT · 2269 days ago · 12 km deep · 31 km away
7. 1.650 km W of Adak, AlaskaWed, Jul 15, 4:09 AM HADT · 2269 days ago · 11 km deep · 31 km away
8. 1.650 km W of Adak, AlaskaWed, Jul 15, 12:27 AM HADT · 2269 days ago · 14 km deep · 31 km away
9. 2.850 km W of Adak, AlaskaWed, Jul 15, 12:24 AM HADT · 2269 days ago · 18 km deep · 31 km away
10. 2.655 km WNW of Adak, AlaskaWed, Jul 15, 12:14 AM HADT · 2269 days ago · 10 km deep · 42 km away
11. 5.252 km WNW of Adak, AlaskaTue, Jul 14, 11:59 PM HADT · 2269 days ago · 12 km deep · 33 km away · felt by 2 · tsunami flag
12. 3.332 km S of Adak, AlaskaTue, Jul 14, 12:23 PM HADT · 2270 days ago · 35 km deep · 81 km away
13. 2.168 km WSW of Adak, AlaskaTue, Jul 14, 9:04 AM HADT · 2270 days ago · 61 km deep · 40 km away
14. 1.6133 km WSW of Adak, AlaskaTue, Jul 14, 4:48 AM HADT · 2270 days ago · 79 km deep · 55 km away
15. 1.724 km SSW of Adak, AlaskaTue, Jul 14, 3:43 AM HADT · 2270 days ago · 60 km deep · 78 km away
16. 2.040 km NNW of Adak, AlaskaTue, Jul 14, 3:34 AM HADT · 2270 days ago · 151 km deep · 78 km away
17. 1.8107 km WSW of Adak, AlaskaMon, Jul 13, 8:12 PM HADT · 2270 days ago · 20 km deep · 58 km away
18. 1.7120 km W of Adak, AlaskaMon, Jul 13, 6:18 PM HADT · 2270 days ago · 17 km deep · 40 km away
19. 1.5107 km SW of Adak, AlaskaMon, Jul 13, 6:16 AM HADT · 2271 days ago · 26 km deep · 65 km away
20. 1.664 km SW of Adak, AlaskaSat, Jul 11, 6:41 PM HADT · 2272 days ago · 57 km deep · 54 km away

From the USGS Earthquake Hazards Program and its partner networks, event av62198981. Read Thu, Oct 1, 2026, 12:33 PM UTC.