M1.5 earthquake 158 km WSW of Adak, Alaska

Magnitude

1.5 (ML, local (Richter)), micro

Magnitude from

AV

Local time

Sat, Mar 31, 2018, 8:39 AM HADT

UTC

2018-03-31 17:39:54 UTC

Depth

18.4 km (11.5 mi), shallow

Epicenter

51.569° N, 178.881° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.2 km horizontally, 1.4 km in depth

Magnitude uncertainty

±0.07

Depth from

From location

Station coverage gap

254°, poorly surrounded by stations

Stations used

5

After

1. 3.2245 km W of Adak, AlaskaSun, Apr 1, 9:03 PM GMT+12 · 3106 days ago · 19 km deep · 88 km away
2. 2.2111 km WSW of Adak, AlaskaSun, Apr 1, 1:46 AM HADT · 3106 days ago · 39 km deep · 49 km away
3. 1.9127 km W of Adak, AlaskaWed, Apr 4, 2:47 AM HADT · 3103 days ago · 15 km deep · 33 km away
4. 2.2130 km W of Adak, AlaskaWed, Apr 4, 2:37 PM HADT · 3103 days ago · 11 km deep · 29 km away
5. 2.075 km WSW of Adak, AlaskaWed, Apr 4, 7:50 PM HADT · 3102 days ago · 36 km deep · 91 km away
6. 2.2210 km WSW of Adak, AlaskaWed, Apr 4, 10:53 PM HADT · 3102 days ago · 9 km deep · 54 km away
7. 2.2213 km W of Adak, AlaskaThu, Apr 5, 3:52 AM HADT · 3102 days ago · 86 km deep · 60 km away
8. 1.5111 km WSW of Adak, AlaskaThu, Apr 5, 4:11 AM HADT · 3102 days ago · 13 km deep · 53 km away
9. 1.8120 km WSW of Adak, AlaskaThu, Apr 5, 1:52 PM HADT · 3102 days ago · 56 km deep · 54 km away
10. 1.7151 km WSW of Adak, AlaskaThu, Apr 5, 3:09 PM HADT · 3102 days ago · 17 km deep · 13 km away
11. 3.6126 km WSW of Adak, AlaskaThu, Apr 5, 8:58 PM HADT · 3101 days ago · 13 km deep · 38 km away
12. 2.2198 km WSW of Adak, AlaskaFri, Apr 6, 7:27 PM HADT · 3100 days ago · 26 km deep · 44 km away
13. 1.6166 km W of Adak, AlaskaFri, Apr 6, 8:39 PM HADT · 3100 days ago · 10 km deep · 25 km away
14. 2.0128 km W of Adak, AlaskaFri, Apr 6, 10:22 PM HADT · 3100 days ago · 20 km deep · 35 km away
15. 3.2145 km WSW of Adak, AlaskaSat, Apr 7, 4:40 AM HADT · 3100 days ago · 80 km deep · 19 km away
16. 2.5147 km WSW of Adak, AlaskaSat, Apr 7, 4:02 PM HADT · 3099 days ago · 69 km deep · 15 km away
17. 2.0126 km W of Adak, AlaskaSat, Apr 7, 8:34 PM HADT · 3099 days ago · 13 km deep · 34 km away
18. 2.596 km SW of Adak, AlaskaSun, Apr 8, 8:32 AM HADT · 3099 days ago · 40 km deep · 87 km away
19. 2.686 km WSW of Adak, AlaskaTue, Apr 10, 4:00 AM HADT · 3097 days ago · 72 km deep · 76 km away
20. 3.0209 km WSW of Adak, AlaskaSun, Apr 15, 3:26 PM HADT · 3091 days ago · 15 km deep · 54 km away
21. 3.0244 km WSW of Adak, AlaskaWed, Apr 18, 4:26 AM GMT-12 · 3089 days ago · 7 km deep · 92 km away
22. 2.6248 km WSW of Adak, AlaskaWed, Apr 18, 5:21 AM GMT-12 · 3089 days ago · 12 km deep · 99 km away
23. 2.6238 km WSW of Adak, AlaskaWed, Apr 18, 5:27 AM GMT-12 · 3089 days ago · 10 km deep · 90 km away
24. 2.7239 km WSW of Adak, AlaskaWed, Apr 18, 5:39 AM GMT-12 · 3089 days ago · 11 km deep · 91 km away
25. 3.7234 km WSW of Adak, AlaskaWed, Apr 18, 8:48 AM HADT · 3089 days ago · 8 km deep · 82 km away
26. 3.8234 km WSW of Adak, AlaskaWed, Apr 18, 9:52 AM HADT · 3089 days ago · 6 km deep · 84 km away
27. 3.0168 km W of Adak, AlaskaWed, Apr 18, 8:51 PM HADT · 3088 days ago · 71 km deep · 15 km away
28. 4.1157 km SW of Adak, AlaskaWed, Apr 18, 10:04 PM HADT · 3088 days ago · 35 km deep · 75 km away
29. 3.8142 km WSW of Adak, AlaskaFri, Apr 20, 4:07 PM HADT · 3086 days ago · 25 km deep · 54 km away
30. 2.6241 km W of Adak, AlaskaSat, Apr 21, 10:23 PM GMT+12 · 3086 days ago · 7 km deep · 83 km away
31. 2.3229 km WSW of Adak, AlaskaSat, Apr 21, 11:44 PM HADT · 3085 days ago · 58 km deep · 71 km away
32. 2.371 km WSW of Adak, AlaskaMon, Apr 23, 8:56 PM HADT · 3083 days ago · 31 km deep · 95 km away
33. 2.9124 km WSW of Adak, AlaskaWed, Apr 25, 9:49 AM HADT · 3082 days ago · 25 km deep · 35 km away
34. 2.091 km WSW of Adak, AlaskaWed, Apr 25, 10:34 AM HADT · 3082 days ago · 63 km deep · 70 km away
35. 2.471 km WSW of Adak, AlaskaWed, Apr 25, 11:54 AM HADT · 3082 days ago · 36 km deep · 94 km away
36. 1.6127 km W of Adak, AlaskaWed, Apr 25, 2:39 PM HADT · 3082 days ago · 15 km deep · 36 km away
37. 2.4243 km WSW of Adak, AlaskaThu, Apr 26, 5:51 PM GMT+12 · 3081 days ago · 52 km deep · 84 km away
38. 2.1124 km W of Adak, AlaskaWed, Apr 25, 9:38 PM HADT · 3081 days ago · 15 km deep · 36 km away
39. 2.0142 km W of Adak, AlaskaThu, Apr 26, 5:23 AM HADT · 3081 days ago · 10 km deep · 18 km away
40. 4.1232 km WSW of Adak, AlaskaThu, Apr 26, 7:18 AM HADT · 3081 days ago · 10 km deep · 91 km away
41. 2.3184 km WSW of Adak, AlaskaSat, Apr 28, 11:36 AM HADT · 3079 days ago · 6 km deep · 40 km away
42. 2.8225 km WSW of Adak, AlaskaSun, Apr 29, 12:06 AM HADT · 3078 days ago · 65 km deep · 66 km away
43. 4.281 km SW of Adak, AlaskaSun, Apr 29, 6:38 AM HADT · 3078 days ago · 14 km deep · 98 km away
44. 2.171 km WSW of Adak, AlaskaSun, Apr 29, 6:45 AM HADT · 3078 days ago · 25 km deep · 95 km away
45. 3.471 km WSW of Adak, AlaskaSun, Apr 29, 6:51 AM HADT · 3078 days ago · 33 km deep · 94 km away
46. 1.872 km SW of Adak, AlaskaSun, Apr 29, 6:54 AM HADT · 3078 days ago · 33 km deep · 97 km away
47. 2.572 km SW of Adak, AlaskaSun, Apr 29, 7:19 AM HADT · 3078 days ago · 32 km deep · 96 km away
48. 2.170 km WSW of Adak, AlaskaSun, Apr 29, 10:16 AM HADT · 3078 days ago · 27 km deep · 95 km away
49. 2.570 km WSW of Adak, AlaskaSun, Apr 29, 11:40 AM HADT · 3078 days ago · 35 km deep · 95 km away
50. 2.4130 km W of Adak, AlaskaSun, Apr 29, 6:34 PM HADT · 3077 days ago · 13 km deep · 32 km away
51. 2.1128 km W of Adak, AlaskaMon, Apr 30, 6:57 AM HADT · 3077 days ago · 16 km deep · 37 km away
52. 1.9128 km W of Adak, AlaskaMon, Apr 30, 7:33 AM HADT · 3077 days ago · 21 km deep · 33 km away
53. 1.9112 km WSW of Adak, AlaskaMon, Apr 30, 9:05 PM HADT · 3076 days ago · 18 km deep · 53 km away
54. 1.571 km SW of Adak, AlaskaTue, May 1, 5:35 AM HADT · 3076 days ago · 25 km deep · 96 km away
55. 1.570 km SW of Adak, AlaskaTue, May 1, 9:51 AM HADT · 3076 days ago · 22 km deep · 97 km away
56. 1.688 km WSW of Adak, AlaskaTue, May 1, 9:59 AM HADT · 3076 days ago · 25 km deep · 71 km away
57. 2.0118 km WSW of Adak, AlaskaTue, May 1, 5:45 PM HADT · 3075 days ago · 26 km deep · 43 km away
58. 1.797 km WSW of Adak, AlaskaWed, May 2, 1:26 AM HADT · 3075 days ago · 51 km deep · 75 km away
59. 2.8177 km WSW of Adak, AlaskaThu, May 3, 3:33 AM HADT · 3074 days ago · 22 km deep · 32 km away
60. 4.5208 km W of Adak, AlaskaThu, May 3, 9:51 AM HADT · 3074 days ago · 80 km deep · 63 km away

The first 60 of 77.

Before

1. 2.2208 km WSW of Adak, AlaskaSat, Mar 31, 7:18 AM HADT · 3107 days ago · 55 km deep · 49 km away
2. 2.4126 km W of Adak, AlaskaSat, Mar 31, 7:12 AM HADT · 3107 days ago · 18 km deep · 34 km away
3. 2.0127 km W of Adak, AlaskaSat, Mar 31, 5:58 AM HADT · 3107 days ago · 19 km deep · 34 km away
4. 2.8187 km W of Adak, AlaskaFri, Mar 30, 9:19 PM HADT · 3107 days ago · 217 km deep · 55 km away
5. 2.5123 km WSW of Adak, AlaskaFri, Mar 30, 5:33 PM HADT · 3107 days ago · 19 km deep · 40 km away
6. 2.0127 km W of Adak, AlaskaFri, Mar 30, 4:39 PM HADT · 3107 days ago · 14 km deep · 32 km away
7. 2.0134 km WSW of Adak, AlaskaFri, Mar 30, 3:54 PM HADT · 3107 days ago · 34 km deep · 56 km away
8. 2.3245 km WSW of Adak, AlaskaFri, Mar 30, 10:55 PM GMT+12 · 3108 days ago · 48 km deep · 87 km away
9. 1.9104 km WSW of Adak, AlaskaThu, Mar 29, 12:04 PM HADT · 3109 days ago · 37 km deep · 68 km away
10. 2.7230 km W of Adak, AlaskaThu, Mar 29, 4:45 AM HADT · 3109 days ago · 196 km deep · 94 km away
11. 1.6124 km WSW of Adak, AlaskaWed, Mar 28, 11:23 PM HADT · 3109 days ago · 11 km deep · 34 km away
12. 3.8220 km W of Adak, AlaskaWed, Mar 28, 10:51 PM HADT · 3109 days ago · 177 km deep · 78 km away
13. 1.7187 km WSW of Adak, AlaskaWed, Mar 28, 8:57 PM HADT · 3109 days ago · 23 km deep · 34 km away
14. 2.1128 km WSW of Adak, AlaskaWed, Mar 28, 12:03 PM HADT · 3110 days ago · 13 km deep · 31 km away
15. 1.9232 km W of Adak, AlaskaWed, Mar 28, 8:59 AM HADT · 3110 days ago · 69 km deep · 74 km away
16. 1.7106 km SW of Adak, AlaskaWed, Mar 28, 8:33 AM HADT · 3110 days ago · 57 km deep · 72 km away
17. 2.6127 km WSW of Adak, AlaskaWed, Mar 28, 1:40 AM HADT · 3110 days ago · 13 km deep · 32 km away
18. 1.6131 km W of Adak, AlaskaTue, Mar 27, 7:01 PM HADT · 3110 days ago · 16 km deep · 35 km away
19. 1.7132 km W of Adak, AlaskaTue, Mar 27, 3:03 PM HADT · 3111 days ago · 13 km deep · 29 km away
20. 2.3190 km WSW of Adak, AlaskaTue, Mar 27, 1:03 PM HADT · 3111 days ago · 12 km deep · 49 km away

From the USGS Earthquake Hazards Program and its partner networks, event av61692206. Read Fri, Oct 2, 2026, 11:51 AM UTC.