M3.5 earthquake 151 km SW of Adak, Alaska

Magnitude

3.5 (ml), minor

Local time

Fri, Sep 11, 2026, 6:43 PM HADT

UTC

2026-09-12 03:43:22 UTC

Depth

19.4 km (12.1 mi), shallow

Epicenter

51.132° N, 178.460° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 5.2 km horizontally, 2.6 km in depth

Magnitude uncertainty

±0.20

Station coverage gap

214°, poorly surrounded by stations

Stations used

34

After

1. 2.4201 km WSW of Adak, AlaskaFri, Sep 11, 7:18 PM HADT · 11 days ago · 33 km deep · 65 km away
2. 1.6126 km W of Adak, AlaskaSat, Sep 12, 6:06 AM HADT · 10 days ago · 22 km deep · 74 km away
3. 1.970 km SW of Adak, AlaskaSat, Sep 12, 7:15 AM HADT · 10 days ago · 21 km deep · 86 km away
4. 2.1116 km WSW of Adak, AlaskaSat, Sep 12, 7:19 AM HADT · 10 days ago · 17 km deep · 37 km away
5. 2.5214 km SW of Adak, AlaskaSat, Sep 12, 10:06 AM HADT · 10 days ago · 12 km deep · 64 km away
6. 1.7121 km WSW of Adak, AlaskaSat, Sep 12, 4:02 PM HADT · 10 days ago · 31 km deep · 40 km away
7. 3.9150 km WSW of Adak, AlaskaSat, Sep 12, 5:08 PM HADT · 10 days ago · 39 km deep · 11 km away
8. 2.4130 km WSW of Adak, AlaskaSat, Sep 12, 6:54 PM HADT · 10 days ago · 28 km deep · 21 km away
9. 1.876 km SW of Adak, AlaskaSat, Sep 12, 9:02 PM HADT · 10 days ago · 34 km deep · 76 km away
10. 1.873 km SSW of Adak, AlaskaSat, Sep 12, 10:28 PM HADT · 10 days ago · 50 km deep · 92 km away
11. 2.7123 km SW of Adak, AlaskaSat, Sep 12, 10:46 PM HADT · 10 days ago · 21 km deep · 28 km away
12. 2.1123 km SW of Adak, AlaskaSat, Sep 12, 11:08 PM HADT · 10 days ago · 23 km deep · 27 km away
13. 2.1135 km SW of Adak, AlaskaSat, Sep 12, 11:28 PM HADT · 10 days ago · 23 km deep · 50 km away
14. 3.5134 km SW of Adak, AlaskaSun, Sep 13, 1:02 AM HADT · 9 days ago · 20 km deep · 31 km away
15. 2.2138 km SW of Adak, AlaskaSun, Sep 13, 7:45 AM HADT · 9 days ago · 27 km deep · 20 km away
16. 2.3158 km SW of Adak, AlaskaSun, Sep 13, 12:56 PM HADT · 9 days ago · 15 km deep · 9 km away
17. 2.0122 km SW of Adak, AlaskaSun, Sep 13, 3:05 PM HADT · 9 days ago · 36 km deep · 29 km away
18. 2.077 km SSW of Adak, AlaskaSun, Sep 13, 3:42 PM HADT · 9 days ago · 32 km deep · 100 km away
19. 2.1199 km W of Adak, AlaskaSun, Sep 13, 4:14 PM HADT · 9 days ago · 92 km deep · 95 km away
20. 2.156 km SW of Adak, AlaskaMon, Sep 14, 7:43 AM HADT · 8 days ago · 18 km deep · 99 km away
21. 2.5162 km SW of Adak, AlaskaMon, Sep 14, 11:31 AM HADT · 8 days ago · 42 km deep · 12 km away
22. 3.0134 km SW of Adak, AlaskaMon, Sep 14, 4:41 PM HADT · 8 days ago · 15 km deep · 44 km away
23. 2.7243 km WSW of Adak, AlaskaMon, Sep 14, 8:47 PM GMT-12 · 8 days ago · 9 km deep · 99 km away
24. 3.1113 km SW of Adak, AlaskaTue, Sep 15, 2:50 AM HADT · 7 days ago · 35 km deep · 40 km away
25. 3.4160 km WSW of Adak, AlaskaTue, Sep 15, 7:10 AM HADT · 7 days ago · 35 km deep · 35 km away
26. 2.4134 km WSW of Adak, AlaskaWed, Sep 16, 5:21 AM HADT · 6 days ago · 29 km deep · 31 km away
27. 2.2103 km WSW of Adak, AlaskaWed, Sep 16, 9:37 AM HADT · 6 days ago · 20 km deep · 49 km away
28. 3.0132 km WSW of Adak, AlaskaWed, Sep 16, 9:49 AM HADT · 6 days ago · 36 km deep · 21 km away
29. 2.5135 km SW of Adak, AlaskaWed, Sep 16, 10:40 AM HADT · 6 days ago · 20 km deep · 16 km away
30. 2.9125 km WSW of Adak, AlaskaWed, Sep 16, 11:32 AM HADT · 6 days ago · 11 km deep · 26 km away
31. 2.8242 km SW of Adak, AlaskaWed, Sep 16, 5:36 PM HADT · 6 days ago · 5 km deep · 91 km away
32. 2.4143 km SW of Adak, AlaskaThu, Sep 17, 12:43 AM HADT · 5 days ago · 33 km deep · 15 km away
33. 2.2143 km W of Adak, AlaskaThu, Sep 17, 10:11 AM HADT · 5 days ago · 97 km deep · 61 km away
34. 2.0133 km WSW of Adak, AlaskaMon, Sep 21, 5:20 PM HADT · 19 hr ago · 15 km deep · 56 km away
35. 3.5148 km WSW of Adak, AlaskaMon, Sep 21, 8:49 PM HADT · 15 hr ago · 0 km deep · 15 km away

Before

1. 2.3149 km WSW of Adak, AlaskaFri, Sep 11, 6:27 PM HADT · 11 days ago · 26 km deep · 2 km away
2. 2.287 km SW of Adak, AlaskaFri, Sep 11, 2:00 PM HADT · 11 days ago · 17 km deep · 67 km away
3. 2.6150 km SW of Adak, AlaskaFri, Sep 11, 12:41 PM HADT · 11 days ago · 15 km deep · 8 km away
4. 2.6222 km WSW of Adak, AlaskaFri, Sep 11, 10:12 AM HADT · 11 days ago · 9 km deep · 75 km away
5. 2.5149 km SW of Adak, AlaskaFri, Sep 11, 9:09 AM HADT · 11 days ago · 21 km deep · 2 km away
6. 2.6151 km WSW of Adak, AlaskaFri, Sep 11, 5:14 AM HADT · 11 days ago · 35 km deep · 1 km away
7. 2.568 km W of Adak, AlaskaFri, Sep 11, 5:12 AM HADT · 11 days ago · 100 km deep · 94 km away
8. 2.6174 km W of Adak, AlaskaFri, Sep 11, 5:05 AM HADT · 11 days ago · 88 km deep · 69 km away
9. 2.8214 km WSW of Adak, AlaskaFri, Sep 11, 4:05 AM HADT · 11 days ago · 17 km deep · 66 km away
10. 2.5152 km WSW of Adak, AlaskaFri, Sep 11, 3:06 AM HADT · 11 days ago · 35 km deep · 2 km away
11. 2.0104 km WSW of Adak, AlaskaFri, Sep 11, 3:04 AM HADT · 11 days ago · 77 km deep · 56 km away
12. 2.4151 km SW of Adak, AlaskaFri, Sep 11, 2:42 AM HADT · 11 days ago · 27 km deep · 0 km away
13. 2.5152 km SW of Adak, AlaskaFri, Sep 11, 2:40 AM HADT · 11 days ago · 17 km deep · 9 km away
14. 2.5151 km SW of Adak, AlaskaFri, Sep 11, 2:13 AM HADT · 11 days ago · 30 km deep · 3 km away
15. 2.5135 km SW of Adak, AlaskaFri, Sep 11, 2:11 AM HADT · 11 days ago · 24 km deep · 16 km away
16. 2.7151 km SW of Adak, AlaskaFri, Sep 11, 2:07 AM HADT · 11 days ago · 20 km deep · 8 km away
17. 3.1155 km SW of Adak, AlaskaFri, Sep 11, 1:56 AM HADT · 11 days ago · 20 km deep · 6 km away
18. 4.3151 km SW of Adak, AlaskaFri, Sep 11, 1:52 AM HADT · 11 days ago · 14 km deep · 3 km away
19. 3.1152 km SW of Adak, AlaskaFri, Sep 11, 1:51 AM HADT · 11 days ago · 19 km deep · 5 km away
20. 5.3151 km WSW of Adak, AlaskaFri, Sep 11, 1:47 AM HADT · 11 days ago · 41 km deep · 11 km away · tsunami flag

From the USGS Earthquake Hazards Program and its partner networks, event aka2026sblaat. Read Tue, Sep 22, 2026, 8:59 PM UTC.