M3.3 earthquake 140 km S of Unalaska, Alaska

Magnitude

3.3 (ml), minor

Local time

Tue, Jan 21, 2025, 4:14 AM AKST

UTC

2025-01-21 13:14:43 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

52.618° N, 166.694° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 3.5 km horizontally, 2.0 km in depth

Magnitude uncertainty

±0.13

Depth from

Operator assigned

Station coverage gap

254°, poorly surrounded by stations

Stations used

20

• Unalaska, AlaskaPopulation 4,491. Forecast140 kmS

After

1. 3.4125 km S of Unalaska, AlaskaTue, Jan 21, 4:15 AM AKST · 616 days ago · 7 km deep · 15 km away
2. 3.0106 km E of Nikolski, AlaskaTue, Jan 21, 4:26 AM AKST · 616 days ago · 35 km deep · 49 km away
3. 3.4138 km S of Unalaska, AlaskaTue, Jan 21, 4:33 AM AKST · 616 days ago · 30 km deep · 4 km away
4. 2.1121 km S of Unalaska, AlaskaTue, Jan 21, 5:22 AM AKST · 616 days ago · 11 km deep · 19 km away
5. 2.6124 km S of Unalaska, AlaskaTue, Jan 21, 6:34 AM AKST · 616 days ago · 35 km deep · 16 km away
6. 2.8136 km S of Unalaska, AlaskaTue, Jan 21, 6:53 AM AKST · 616 days ago · 10 km deep · 6 km away
7. 2.7129 km S of Unalaska, AlaskaTue, Jan 21, 8:20 AM AKST · 616 days ago · 25 km deep · 12 km away
8. 4.4123 km S of Unalaska, AlaskaTue, Jan 21, 8:58 AM AKST · 616 days ago · 10 km deep · 16 km away
9. 2.7139 km S of Unalaska, AlaskaTue, Jan 21, 9:09 AM AKST · 616 days ago · 10 km deep · 10 km away
10. 2.4118 km S of Unalaska, AlaskaTue, Jan 21, 9:15 AM AKST · 616 days ago · 15 km deep · 22 km away
11. 2.4126 km S of Unalaska, AlaskaTue, Jan 21, 10:03 AM AKST · 616 days ago · 13 km deep · 13 km away
12. 3.5129 km S of Unalaska, AlaskaTue, Jan 21, 10:30 AM AKST · 616 days ago · 32 km deep · 10 km away
13. 3.2133 km S of Unalaska, AlaskaTue, Jan 21, 10:32 AM AKST · 616 days ago · 35 km deep · 6 km away
14. 2.6133 km S of Unalaska, AlaskaTue, Jan 21, 10:32 AM AKST · 616 days ago · 20 km deep · 8 km away
15. 2.4130 km S of Unalaska, AlaskaTue, Jan 21, 9:25 PM AKST · 615 days ago · 18 km deep · 10 km away
16. 2.6138 km S of Unalaska, AlaskaWed, Jan 22, 12:51 AM AKST · 615 days ago · 30 km deep · 2 km away
17. 2.8104 km SSW of Unalaska, AlaskaWed, Jan 22, 1:12 AM AKST · 615 days ago · 35 km deep · 40 km away
18. 2.089 km SSW of Unalaska, AlaskaWed, Jan 22, 3:24 AM AKST · 615 days ago · 19 km deep · 61 km away
19. 3.2125 km S of Unalaska, AlaskaWed, Jan 22, 5:37 AM AKST · 615 days ago · 10 km deep · 17 km away
20. 3.5136 km S of Unalaska, AlaskaWed, Jan 22, 5:55 AM AKST · 615 days ago · 10 km deep · 7 km away
21. 2.9128 km S of Unalaska, AlaskaWed, Jan 22, 6:57 AM AKST · 615 days ago · 10 km deep · 12 km away
22. 3.0122 km S of Unalaska, AlaskaWed, Jan 22, 7:29 AM AKST · 615 days ago · 10 km deep · 18 km away
23. 2.4138 km S of Unalaska, AlaskaWed, Jan 22, 9:48 AM AKST · 615 days ago · 18 km deep · 8 km away
24. 3.6114 km S of Unalaska, AlaskaWed, Jan 22, 3:36 PM AKST · 615 days ago · 10 km deep · 28 km away
25. 2.6133 km S of Unalaska, AlaskaWed, Jan 22, 4:58 PM AKST · 615 days ago · 10 km deep · 6 km away
26. 2.9132 km S of Unalaska, AlaskaWed, Jan 22, 5:27 PM AKST · 615 days ago · 10 km deep · 8 km away
27. 2.4128 km S of Unalaska, AlaskaWed, Jan 22, 8:47 PM AKST · 614 days ago · 19 km deep · 12 km away
28. 2.7119 km S of Unalaska, AlaskaWed, Jan 22, 11:30 PM AKST · 614 days ago · 10 km deep · 21 km away
29. 2.9132 km S of Unalaska, AlaskaThu, Jan 23, 1:36 AM AKST · 614 days ago · 10 km deep · 7 km away
30. 2.080 km SSW of Unalaska, AlaskaThu, Jan 23, 4:10 AM AKST · 614 days ago · 26 km deep · 63 km away
31. 2.6136 km S of Unalaska, AlaskaThu, Jan 23, 5:57 AM AKST · 614 days ago · 10 km deep · 5 km away
32. 2.874 km E of Nikolski, AlaskaThu, Jan 23, 9:54 AM AKST · 614 days ago · 35 km deep · 80 km away
33. 2.4115 km S of Unalaska, AlaskaThu, Jan 23, 7:47 PM AKST · 613 days ago · 8 km deep · 28 km away
34. 3.3136 km S of Unalaska, AlaskaSat, Jan 25, 11:35 PM AKST · 611 days ago · 10 km deep · 7 km away
35. 5.686 km SSW of Unalaska, AlaskaSun, Jan 26, 1:39 PM AKST · 611 days ago · 59 km deep · 74 km away · felt by 44 · tsunami flag
36. 3.688 km SW of Unalaska, AlaskaSun, Jan 26, 1:41 PM AKST · 611 days ago · 78 km deep · 86 km away
37. 2.895 km SSW of Unalaska, AlaskaSun, Jan 26, 1:52 PM AKST · 611 days ago · 32 km deep · 63 km away
38. 2.8101 km SSW of Unalaska, AlaskaSun, Jan 26, 1:57 PM AKST · 611 days ago · 32 km deep · 54 km away
39. 2.191 km SSW of Unalaska, AlaskaSun, Jan 26, 2:05 PM AKST · 611 days ago · 56 km deep · 72 km away
40. 3.3135 km S of Unalaska, AlaskaSun, Jan 26, 7:08 PM AKST · 610 days ago · 25 km deep · 5 km away
41. 2.8136 km S of Unalaska, AlaskaSun, Jan 26, 10:55 PM AKST · 610 days ago · 10 km deep · 8 km away
42. 2.086 km SSW of Unalaska, AlaskaMon, Jan 27, 8:43 AM AKST · 610 days ago · 52 km deep · 75 km away
43. 1.996 km SSW of Unalaska, AlaskaMon, Jan 27, 10:34 AM AKST · 610 days ago · 16 km deep · 61 km away
44. 2.093 km SSW of Unalaska, AlaskaMon, Jan 27, 12:55 PM AKST · 610 days ago · 41 km deep · 66 km away
45. 3.5185 km ESE of Nikolski, AlaskaMon, Jan 27, 4:48 PM AKST · 610 days ago · 10 km deep · 62 km away
46. 1.994 km SSW of Unalaska, AlaskaMon, Jan 27, 4:55 PM AKST · 610 days ago · 41 km deep · 63 km away
47. 2.072 km SSE of Unalaska, AlaskaMon, Jan 27, 5:36 PM AKST · 610 days ago · 33 km deep · 83 km away
48. 3.170 km SE of Nikolski, AlaskaTue, Jan 28, 3:25 AM AKST · 609 days ago · 35 km deep · 93 km away
49. 3.184 km SW of Unalaska, AlaskaTue, Jan 28, 4:27 AM AKST · 609 days ago · 68 km deep · 90 km away
50. 2.156 km ESE of Nikolski, AlaskaTue, Jan 28, 5:57 PM AKST · 609 days ago · 45 km deep · 94 km away
51. 2.0135 km S of Unalaska, AlaskaTue, Jan 28, 10:49 PM AKST · 608 days ago · 25 km deep · 9 km away
52. 2.9109 km E of Nikolski, AlaskaWed, Jan 29, 1:19 AM AKST · 608 days ago · 35 km deep · 43 km away
53. 1.883 km SW of Unalaska, AlaskaWed, Jan 29, 10:43 AM AKST · 608 days ago · 67 km deep · 96 km away
54. 1.894 km SSW of Unalaska, AlaskaWed, Jan 29, 2:01 PM AKST · 608 days ago · 40 km deep · 67 km away
55. 2.2133 km S of Unalaska, AlaskaWed, Jan 29, 5:45 PM AKST · 608 days ago · 5 km deep · 6 km away
56. 2.155 km ESE of Nikolski, AlaskaThu, Jan 30, 5:57 AM AKST · 607 days ago · 22 km deep · 97 km away
57. 3.287 km SW of Unalaska, AlaskaThu, Jan 30, 4:09 PM AKST · 607 days ago · 63 km deep · 84 km away
58. 2.2129 km SSW of Unalaska, AlaskaThu, Jan 30, 8:22 PM AKST · 606 days ago · 6 km deep · 20 km away
59. 2.2139 km S of Unalaska, AlaskaThu, Jan 30, 9:51 PM AKST · 606 days ago · 12 km deep · 7 km away
60. 2.7117 km S of Unalaska, AlaskaFri, Jan 31, 5:26 AM AKST · 606 days ago · 6 km deep · 23 km away

The first 60 of 151.

Before

1. 2.7109 km S of Unalaska, AlaskaTue, Jan 21, 3:37 AM AKST · 616 days ago · 35 km deep · 32 km away
2. 2.2120 km S of Unalaska, AlaskaTue, Jan 21, 3:30 AM AKST · 616 days ago · 19 km deep · 20 km away
3. 2.3128 km S of Unalaska, AlaskaTue, Jan 21, 3:07 AM AKST · 616 days ago · 24 km deep · 11 km away
4. 2.4118 km S of Unalaska, AlaskaTue, Jan 21, 2:59 AM AKST · 616 days ago · 16 km deep · 24 km away
5. 5.2126 km S of Unalaska, AlaskaTue, Jan 21, 2:55 AM AKST · 616 days ago · 10 km deep · 14 km away · felt by 2
6. 2.7114 km ESE of Nikolski, AlaskaMon, Jan 20, 8:55 PM AKST · 616 days ago · 10 km deep · 36 km away
7. 1.8104 km E of Nikolski, AlaskaMon, Jan 20, 8:42 PM AKST · 616 days ago · 26 km deep · 55 km away
8. 2.7108 km E of Nikolski, AlaskaMon, Jan 20, 8:40 PM AKST · 616 days ago · 35 km deep · 42 km away
9. 1.976 km S of Unalaska, AlaskaMon, Jan 20, 6:47 PM AKST · 616 days ago · 34 km deep · 65 km away
10. 1.986 km S of Unalaska, AlaskaMon, Jan 20, 9:52 AM AKST · 617 days ago · 26 km deep · 54 km away
11. 1.8102 km E of Nikolski, AlaskaSun, Jan 19, 6:13 AM AKST · 618 days ago · 13 km deep · 52 km away
12. 2.5162 km SSE of Unalaska, AlaskaSat, Jan 18, 3:00 PM AKST · 619 days ago · 10 km deep · 93 km away
13. 1.981 km SSW of Unalaska, AlaskaSat, Jan 18, 5:26 AM AKST · 619 days ago · 21 km deep · 63 km away
14. 2.268 km SE of Nikolski, AlaskaSat, Jan 18, 4:32 AM AKST · 619 days ago · 2 km deep · 95 km away
15. 2.4136 km ESE of Nikolski, AlaskaSat, Jan 18, 1:50 AM AKST · 619 days ago · 13 km deep · 19 km away
16. 2.082 km SSW of Unalaska, AlaskaThu, Jan 16, 4:22 PM AKST · 621 days ago · 26 km deep · 60 km away
17. 2.254 km SW of Unalaska, AlaskaWed, Jan 15, 6:07 PM AKST · 622 days ago · 24 km deep · 98 km away
18. 1.891 km E of Nikolski, AlaskaWed, Jan 15, 6:17 AM AKST · 622 days ago · 23 km deep · 70 km away
19. 1.895 km E of Nikolski, AlaskaTue, Jan 14, 10:31 AM AKST · 623 days ago · 26 km deep · 58 km away
20. 1.882 km SSW of Unalaska, AlaskaTue, Jan 14, 5:50 AM AKST · 623 days ago · 26 km deep · 60 km away

From the USGS Earthquake Hazards Program and its partner networks, event us7000pee9 (also filed as ak025yy409s). Read Tue, Sep 29, 2026, 2:42 PM UTC.