M2.1 earthquake 142 km W of Adak, Alaska

Magnitude

2.1 (ML, local (Richter)), micro

Magnitude from

AV

Local time

Wed, Aug 15, 2018, 4:50 PM HADT

UTC

2018-08-16 01:50:33 UTC

Depth

12.2 km (7.6 mi), shallow

Epicenter

51.806° N, 178.705° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.7 km horizontally, 1.8 km in depth

Magnitude uncertainty

±0.53

Depth from

From location

Station coverage gap

299°, poorly surrounded by stations

Stations used

4

After

1. 1.7107 km WSW of Adak, AlaskaWed, Aug 15, 4:56 PM HADT · 2969 days ago · 60 km deep · 64 km away
2. 2.6100 km SW of Adak, AlaskaWed, Aug 15, 4:59 PM HADT · 2969 days ago · 39 km deep · 92 km away
3. 1.5104 km SW of Adak, AlaskaWed, Aug 15, 5:12 PM HADT · 2969 days ago · 48 km deep · 75 km away
4. 1.6100 km SW of Adak, AlaskaWed, Aug 15, 5:16 PM HADT · 2969 days ago · 51 km deep · 85 km away
5. 1.5103 km SW of Adak, AlaskaWed, Aug 15, 5:19 PM HADT · 2969 days ago · 24 km deep · 86 km away
6. 2.1117 km SW of Adak, AlaskaWed, Aug 15, 5:26 PM HADT · 2969 days ago · 28 km deep · 82 km away
7. 2.1112 km SW of Adak, AlaskaWed, Aug 15, 5:37 PM HADT · 2969 days ago · 38 km deep · 86 km away
8. 2.1203 km WSW of Adak, AlaskaWed, Aug 15, 5:51 PM HADT · 2969 days ago · 8 km deep · 92 km away
9. 1.5105 km SW of Adak, AlaskaWed, Aug 15, 6:04 PM HADT · 2969 days ago · 52 km deep · 82 km away
10. 3.0118 km SW of Adak, AlaskaWed, Aug 15, 6:21 PM HADT · 2969 days ago · 30 km deep · 89 km away
11. 2.0113 km SW of Adak, AlaskaWed, Aug 15, 6:33 PM HADT · 2969 days ago · 45 km deep · 83 km away
12. 2.8105 km SW of Adak, AlaskaWed, Aug 15, 6:45 PM HADT · 2969 days ago · 29 km deep · 95 km away
13. 1.699 km SW of Adak, AlaskaWed, Aug 15, 6:49 PM HADT · 2969 days ago · 34 km deep · 87 km away
14. 1.998 km SW of Adak, AlaskaWed, Aug 15, 7:03 PM HADT · 2969 days ago · 38 km deep · 90 km away
15. 3.0114 km SW of Adak, AlaskaWed, Aug 15, 7:43 PM HADT · 2969 days ago · 44 km deep · 90 km away
16. 1.6108 km WSW of Adak, AlaskaWed, Aug 15, 7:55 PM HADT · 2969 days ago · 63 km deep · 66 km away
17. 1.9114 km SW of Adak, AlaskaWed, Aug 15, 7:58 PM HADT · 2969 days ago · 38 km deep · 84 km away
18. 1.5100 km SW of Adak, AlaskaWed, Aug 15, 8:39 PM HADT · 2969 days ago · 50 km deep · 88 km away
19. 3.5116 km SW of Adak, AlaskaWed, Aug 15, 8:46 PM HADT · 2969 days ago · 43 km deep · 79 km away
20. 2.4105 km SW of Adak, AlaskaWed, Aug 15, 8:57 PM HADT · 2969 days ago · 27 km deep · 92 km away
21. 2.1117 km SW of Adak, AlaskaWed, Aug 15, 9:23 PM HADT · 2969 days ago · 26 km deep · 94 km away
22. 1.5108 km SW of Adak, AlaskaWed, Aug 15, 9:40 PM HADT · 2969 days ago · 39 km deep · 81 km away
23. 2.0117 km SW of Adak, AlaskaWed, Aug 15, 9:49 PM HADT · 2969 days ago · 26 km deep · 82 km away
24. 1.7113 km SW of Adak, AlaskaWed, Aug 15, 10:20 PM HADT · 2969 days ago · 45 km deep · 83 km away
25. 2.0121 km SW of Adak, AlaskaWed, Aug 15, 10:26 PM HADT · 2969 days ago · 37 km deep · 90 km away
26. 1.6109 km WSW of Adak, AlaskaWed, Aug 15, 10:30 PM HADT · 2969 days ago · 50 km deep · 73 km away
27. 2.6118 km SW of Adak, AlaskaWed, Aug 15, 10:33 PM HADT · 2969 days ago · 33 km deep · 88 km away
28. 1.5109 km SW of Adak, AlaskaWed, Aug 15, 10:43 PM HADT · 2969 days ago · 45 km deep · 74 km away
29. 1.5107 km SW of Adak, AlaskaWed, Aug 15, 11:01 PM HADT · 2969 days ago · 37 km deep · 90 km away
30. 1.5107 km SW of Adak, AlaskaThu, Aug 16, 12:15 AM HADT · 2969 days ago · 21 km deep · 86 km away
31. 2.2115 km SW of Adak, AlaskaThu, Aug 16, 12:35 AM HADT · 2969 days ago · 39 km deep · 90 km away
32. 1.898 km SW of Adak, AlaskaThu, Aug 16, 2:02 AM HADT · 2969 days ago · 46 km deep · 84 km away
33. 1.8113 km SW of Adak, AlaskaThu, Aug 16, 2:10 AM HADT · 2969 days ago · 40 km deep · 77 km away
34. 3.9113 km WSW of Adak, AlaskaThu, Aug 16, 2:12 AM HADT · 2969 days ago · 50 km deep · 59 km away
35. 1.795 km SW of Adak, AlaskaThu, Aug 16, 2:16 AM HADT · 2969 days ago · 42 km deep · 86 km away
36. 2.5117 km SW of Adak, AlaskaThu, Aug 16, 2:51 AM HADT · 2969 days ago · 35 km deep · 91 km away
37. 1.5108 km SW of Adak, AlaskaThu, Aug 16, 3:13 AM HADT · 2969 days ago · 7 km deep · 90 km away
38. 1.5110 km SW of Adak, AlaskaThu, Aug 16, 3:21 AM HADT · 2969 days ago · 21 km deep · 81 km away
39. 2.4114 km SW of Adak, AlaskaThu, Aug 16, 3:39 AM HADT · 2969 days ago · 33 km deep · 84 km away
40. 1.5111 km SW of Adak, AlaskaThu, Aug 16, 3:46 AM HADT · 2969 days ago · 41 km deep · 85 km away
41. 2.0101 km SW of Adak, AlaskaThu, Aug 16, 4:04 AM HADT · 2969 days ago · 45 km deep · 80 km away
42. 4.5101 km SW of Adak, AlaskaThu, Aug 16, 4:28 AM HADT · 2969 days ago · 39 km deep · 86 km away
43. 1.8111 km SW of Adak, AlaskaThu, Aug 16, 5:09 AM HADT · 2969 days ago · 36 km deep · 83 km away
44. 2.8Andreanof Islands, Aleutian Islands, AlaskaThu, Aug 16, 5:26 AM HADT · 2969 days ago · 35 km deep · 89 km away
45. 1.6112 km SW of Adak, AlaskaThu, Aug 16, 6:09 AM HADT · 2969 days ago · 37 km deep · 87 km away
46. 1.6110 km WSW of Adak, AlaskaThu, Aug 16, 7:03 AM HADT · 2968 days ago · 48 km deep · 69 km away
47. 1.598 km SW of Adak, AlaskaThu, Aug 16, 7:05 AM HADT · 2968 days ago · 26 km deep · 91 km away
48. 1.998 km SW of Adak, AlaskaThu, Aug 16, 7:06 AM HADT · 2968 days ago · 41 km deep · 90 km away
49. 1.7101 km SW of Adak, AlaskaThu, Aug 16, 7:45 AM HADT · 2968 days ago · 13 km deep · 79 km away
50. 2.8131 km SW of Adak, AlaskaThu, Aug 16, 7:57 AM HADT · 2968 days ago · 35 km deep · 95 km away
51. 2.399 km SW of Adak, AlaskaThu, Aug 16, 9:32 AM HADT · 2968 days ago · 45 km deep · 91 km away
52. 2.0115 km SW of Adak, AlaskaThu, Aug 16, 2:17 PM HADT · 2968 days ago · 26 km deep · 80 km away
53. 2.8117 km SW of Adak, AlaskaThu, Aug 16, 3:24 PM HADT · 2968 days ago · 35 km deep · 82 km away
54. 2.7234 km W of Adak, AlaskaThu, Aug 16, 4:05 PM HADT · 2968 days ago · 177 km deep · 95 km away
55. 2.1120 km SW of Adak, AlaskaThu, Aug 16, 5:12 PM HADT · 2968 days ago · 22 km deep · 87 km away
56. 2.3119 km SW of Adak, AlaskaThu, Aug 16, 5:56 PM HADT · 2968 days ago · 45 km deep · 72 km away
57. 2.3236 km W of Adak, AlaskaThu, Aug 16, 5:57 PM HADT · 2968 days ago · 90 km deep · 93 km away
58. 5.4123 km WSW of Adak, AlaskaThu, Aug 16, 7:35 PM HADT · 2968 days ago · 32 km deep · 68 km away · tsunami flag
59. 2.1119 km SW of Adak, AlaskaThu, Aug 16, 8:37 PM HADT · 2968 days ago · 26 km deep · 82 km away
60. 2.0108 km SW of Adak, AlaskaThu, Aug 16, 10:20 PM HADT · 2968 days ago · 26 km deep · 81 km away

The first 60 of at least 199.

Before

1. 2.199 km SW of Adak, AlaskaWed, Aug 15, 4:41 PM HADT · 2969 days ago · 49 km deep · 87 km away
2. 1.8119 km SW of Adak, AlaskaWed, Aug 15, 4:32 PM HADT · 2969 days ago · 44 km deep · 79 km away
3. 1.7120 km SW of Adak, AlaskaWed, Aug 15, 4:21 PM HADT · 2969 days ago · 21 km deep · 90 km away
4. 1.9116 km SW of Adak, AlaskaWed, Aug 15, 4:18 PM HADT · 2969 days ago · 26 km deep · 90 km away
5. 1.798 km SW of Adak, AlaskaWed, Aug 15, 4:17 PM HADT · 2969 days ago · 46 km deep · 90 km away
6. 2.2111 km SW of Adak, AlaskaWed, Aug 15, 4:14 PM HADT · 2969 days ago · 10 km deep · 98 km away
7. 1.696 km SW of Adak, AlaskaWed, Aug 15, 4:08 PM HADT · 2969 days ago · 37 km deep · 91 km away
8. 1.6101 km SW of Adak, AlaskaWed, Aug 15, 4:03 PM HADT · 2969 days ago · 25 km deep · 91 km away
9. 2.5107 km SW of Adak, AlaskaWed, Aug 15, 4:00 PM HADT · 2969 days ago · 49 km deep · 80 km away
10. 2.2114 km SW of Adak, AlaskaWed, Aug 15, 3:58 PM HADT · 2969 days ago · 35 km deep · 81 km away
11. 1.5100 km SW of Adak, AlaskaWed, Aug 15, 3:51 PM HADT · 2969 days ago · 44 km deep · 86 km away
12. 1.8117 km SW of Adak, AlaskaWed, Aug 15, 3:49 PM HADT · 2969 days ago · 33 km deep · 79 km away
13. 1.7111 km SW of Adak, AlaskaWed, Aug 15, 3:44 PM HADT · 2969 days ago · 45 km deep · 78 km away
14. 1.7104 km SW of Adak, AlaskaWed, Aug 15, 3:34 PM HADT · 2969 days ago · 21 km deep · 88 km away
15. 1.598 km SW of Adak, AlaskaWed, Aug 15, 3:31 PM HADT · 2969 days ago · 22 km deep · 90 km away
16. 1.6110 km SW of Adak, AlaskaWed, Aug 15, 3:26 PM HADT · 2969 days ago · 50 km deep · 80 km away
17. 2.1111 km SW of Adak, AlaskaWed, Aug 15, 3:20 PM HADT · 2969 days ago · 49 km deep · 81 km away
18. 1.7111 km SW of Adak, AlaskaWed, Aug 15, 3:13 PM HADT · 2969 days ago · 14 km deep · 88 km away
19. 1.6113 km SW of Adak, AlaskaWed, Aug 15, 3:11 PM HADT · 2969 days ago · 26 km deep · 85 km away
20. 3.0118 km SW of Adak, AlaskaWed, Aug 15, 2:56 PM HADT · 2969 days ago · 32 km deep · 77 km away

From the USGS Earthquake Hazards Program and its partner networks, event av61761471. Read Fri, Oct 2, 2026, 2:42 AM UTC.