M2.5 earthquake 57 km SW of Unalaska, Alaska

Magnitude

2.5 (ml), micro

Local time

Sun, Oct 21, 2018, 11:20 AM AKDT

UTC

2018-10-21 19:20:31 UTC

Depth

76.1 km (47.3 mi), intermediate-depth

Epicenter

53.496° N, 167.120° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 5.3 km horizontally, 8.3 km in depth

Depth from

From location

Station coverage gap

197°, poorly surrounded by stations

Stations used

17

• Unalaska, AlaskaPopulation 4,491. Forecast57 kmSW

After

1. 2.163 km SE of Unalaska, AlaskaMon, Oct 22, 2:17 PM AKDT · 2900 days ago · 27 km deep · 84 km away
2. 1.777 km SW of Unalaska, AlaskaMon, Oct 22, 11:19 PM AKDT · 2900 days ago · 21 km deep · 21 km away
3. 2.658 km E of Nikolski, AlaskaSat, Oct 27, 5:39 PM AKDT · 2895 days ago · 56 km deep · 93 km away
4. 2.570 km ENE of Nikolski, AlaskaSat, Oct 27, 11:33 PM AKDT · 2895 days ago · 75 km deep · 61 km away
5. 1.841 km S of Akutan, AlaskaMon, Oct 29, 1:07 AM AKDT · 2894 days ago · 95 km deep · 89 km away
6. 2.298 km SSW of Unalaska, AlaskaMon, Oct 29, 11:42 AM AKDT · 2893 days ago · 33 km deep · 53 km away
7. 1.972 km NE of Nikolski, AlaskaTue, Oct 30, 10:11 AM AKDT · 2892 days ago · 73 km deep · 61 km away
8. 2.541 km ESE of Unalaska, AlaskaWed, Oct 31, 2:00 AM AKDT · 2892 days ago · 70 km deep · 79 km away
9. 2.165 km E of Nikolski, AlaskaFri, Nov 2, 4:49 PM AKDT · 2889 days ago · 50 km deep · 81 km away
10. 2.152 km SW of Unalaska, AlaskaSat, Nov 3, 8:50 AM AKDT · 2888 days ago · 17 km deep · 9 km away
11. 1.993 km WSW of Unalaska, AlaskaSun, Nov 4, 6:18 PM AKST · 2887 days ago · 88 km deep · 46 km away
12. 2.087 km S of Unalaska, AlaskaMon, Nov 5, 1:05 AM AKST · 2887 days ago · 20 km deep · 56 km away
13. 2.127 km S of Unalaska, AlaskaMon, Nov 5, 5:35 AM AKST · 2886 days ago · 75 km deep · 39 km away
14. 2.662 km SSE of Unalaska, AlaskaWed, Nov 7, 1:46 AM AKST · 2885 days ago · 28 km deep · 64 km away
15. 1.720 km WSW of Dutch Harbor, AlaskaSat, Nov 10, 2:10 AM AKST · 2882 days ago · 5 km deep · 43 km away
16. 1.820 km W of Dutch Harbor, AlaskaSat, Nov 10, 2:11 AM AKST · 2882 days ago · 6 km deep · 44 km away
17. 1.618 km WSW of Dutch Harbor, AlaskaSat, Nov 10, 2:47 AM AKST · 2882 days ago · 6 km deep · 43 km away
18. 2.318 km WSW of Dutch Harbor, AlaskaSun, Nov 11, 9:26 AM AKST · 2880 days ago · 8 km deep · 44 km away
19. 2.491 km E of Nikolski, AlaskaSun, Nov 11, 11:36 AM AKST · 2880 days ago · 48 km deep · 65 km away
20. 2.599 km E of Nikolski, AlaskaSun, Nov 11, 12:28 PM AKST · 2880 days ago · 61 km deep · 73 km away
21. 1.962 km S of Akutan, AlaskaSun, Nov 11, 10:14 PM AKST · 2880 days ago · 40 km deep · 95 km away
22. 2.695 km SSW of Unalaska, AlaskaWed, Nov 14, 2:38 AM AKST · 2878 days ago · 35 km deep · 50 km away
23. 2.087 km SSW of Unalaska, AlaskaWed, Nov 14, 2:49 AM AKST · 2878 days ago · 14 km deep · 45 km away
24. 1.973 km NE of Nikolski, AlaskaWed, Nov 14, 5:01 PM AKST · 2877 days ago · 80 km deep · 60 km away
25. 4.616 km E of Unalaska, AlaskaThu, Nov 15, 9:13 AM AKST · 2876 days ago · 84 km deep · 68 km away · felt by 3
26. 1.934 km SE of Unalaska, AlaskaThu, Nov 15, 9:21 AM AKST · 2876 days ago · 71 km deep · 70 km away
27. 2.330 km SE of Unalaska, AlaskaThu, Nov 15, 9:35 AM AKST · 2876 days ago · 70 km deep · 69 km away
28. 1.9103 km S of Unalaska, AlaskaThu, Nov 15, 12:14 PM AKST · 2876 days ago · 5 km deep · 62 km away
29. 1.830 km ESE of Unalaska, AlaskaThu, Nov 15, 11:51 PM AKST · 2876 days ago · 72 km deep · 72 km away
30. 2.5104 km E of Nikolski, AlaskaFri, Nov 16, 3:10 PM AKST · 2875 days ago · 20 km deep · 78 km away
31. 2.070 km SE of Unalaska, AlaskaSat, Nov 17, 7:03 AM AKST · 2874 days ago · 13 km deep · 90 km away
32. 1.511 km SSW of Unalaska, AlaskaSun, Nov 18, 8:04 AM AKST · 2873 days ago · 12 km deep · 45 km away
33. 1.790 km SSW of Unalaska, AlaskaMon, Nov 19, 9:12 PM AKST · 2872 days ago · 23 km deep · 44 km away
34. 1.792 km SSW of Unalaska, AlaskaMon, Nov 19, 9:15 PM AKST · 2872 days ago · 13 km deep · 49 km away
35. 1.577 km SE of Unalaska, AlaskaThu, Nov 22, 1:01 AM AKST · 2870 days ago · 25 km deep · 91 km away
36. 1.960 km WSW of Unalaska, AlaskaFri, Nov 23, 5:28 PM AKST · 2868 days ago · 2 km deep · 23 km away
37. 2.774 km S of Akutan, AlaskaMon, Nov 26, 11:25 AM AKST · 2865 days ago · 20 km deep · 99 km away
38. 2.159 km E of Nikolski, AlaskaMon, Nov 26, 9:46 PM AKST · 2865 days ago · 23 km deep · 93 km away
39. 2.571 km ENE of Nikolski, AlaskaTue, Nov 27, 7:03 PM AKST · 2864 days ago · 77 km deep · 61 km away
40. 1.573 km WSW of Unalaska, AlaskaWed, Nov 28, 12:46 AM AKST · 2864 days ago · 14 km deep · 27 km away
41. 1.977 km SE of Unalaska, AlaskaWed, Nov 28, 7:05 AM AKST · 2863 days ago · 20 km deep · 94 km away
42. 1.866 km SE of Unalaska, AlaskaWed, Nov 28, 3:04 PM AKST · 2863 days ago · 23 km deep · 87 km away
43. 1.865 km SE of Unalaska, AlaskaWed, Nov 28, 7:03 PM AKST · 2863 days ago · 22 km deep · 86 km away
44. 1.860 km E of Nikolski, AlaskaThu, Nov 29, 1:27 AM AKST · 2863 days ago · 36 km deep · 76 km away
45. 2.236 km ESE of Unalaska, AlaskaThu, Nov 29, 6:06 PM AKST · 2862 days ago · 38 km deep · 76 km away
46. 1.511 km SW of Unalaska, AlaskaMon, Dec 3, 6:23 PM AKST · 2858 days ago · 12 km deep · 46 km away
47. 1.995 km E of Nikolski, AlaskaWed, Dec 5, 4:09 AM AKST · 2856 days ago · 41 km deep · 53 km away
48. 2.053 km SW of Unalaska, AlaskaWed, Dec 5, 4:33 AM AKST · 2856 days ago · 86 km deep · 5 km away
49. 3.378 km SSW of Unalaska, AlaskaThu, Dec 6, 6:44 AM AKST · 2855 days ago · 48 km deep · 40 km away
50. 2.270 km E of Nikolski, AlaskaThu, Dec 6, 10:35 AM AKST · 2855 days ago · 55 km deep · 86 km away
51. 1.973 km SW of Unalaska, AlaskaThu, Dec 6, 5:38 PM AKST · 2855 days ago · 15 km deep · 17 km away
52. 2.488 km E of Nikolski, AlaskaThu, Dec 6, 5:51 PM AKST · 2855 days ago · 26 km deep · 66 km away
53. 2.248 km S of Akutan, AlaskaFri, Dec 7, 7:26 PM AKST · 2854 days ago · 50 km deep · 97 km away
54. 3.588 km SSW of Unalaska, AlaskaSun, Dec 9, 12:38 PM AKST · 2852 days ago · 33 km deep · 44 km away
55. 2.388 km SSW of Unalaska, AlaskaSun, Dec 9, 1:50 PM AKST · 2852 days ago · 26 km deep · 45 km away
56. 1.78 km SW of Unalaska, AlaskaMon, Dec 10, 9:46 AM AKST · 2851 days ago · 12 km deep · 48 km away
57. 2.467 km S of Unalaska, AlaskaTue, Dec 11, 6:22 PM AKST · 2850 days ago · 37 km deep · 47 km away
58. 4.078 km S of Unalaska, AlaskaWed, Dec 12, 3:44 AM AKST · 2849 days ago · 10 km deep · 43 km away
59. 2.034 km S of Akutan, AlaskaWed, Dec 12, 11:35 AM AKST · 2849 days ago · 30 km deep · 96 km away
60. 2.181 km SSW of Unalaska, AlaskaWed, Dec 12, 5:08 PM AKST · 2849 days ago · 25 km deep · 41 km away

The first 60 of 70.

Before

1. 2.162 km SSE of Unalaska, AlaskaSun, Oct 21, 8:38 AM AKDT · 2901 days ago · 70 km deep · 56 km away
2. 2.874 km ENE of Nikolski, AlaskaSun, Oct 21, 2:28 AM AKDT · 2902 days ago · 57 km deep · 58 km away
3. 1.678 km SW of Unalaska, AlaskaSun, Oct 21, 2:06 AM AKDT · 2902 days ago · 13 km deep · 21 km away
4. 1.716 km WSW of Dutch Harbor, AlaskaFri, Oct 19, 7:37 PM AKDT · 2903 days ago · 6 km deep · 44 km away
5. 2.375 km SSW of Unalaska, AlaskaThu, Oct 18, 7:49 PM AKDT · 2904 days ago · 27 km deep · 37 km away
6. 3.090 km S of Unalaska, AlaskaThu, Oct 18, 7:03 PM AKDT · 2904 days ago · 10 km deep · 56 km away
7. 1.874 km SSE of Unalaska, AlaskaThu, Oct 18, 5:28 AM AKDT · 2904 days ago · 22 km deep · 79 km away
8. 2.267 km SSE of Unalaska, AlaskaMon, Oct 15, 4:36 PM AKDT · 2907 days ago · 23 km deep · 63 km away
9. 1.521 km SE of Unalaska, AlaskaSun, Oct 14, 3:54 AM AKDT · 2909 days ago · 9 km deep · 63 km away
10. 2.049 km SW of Unalaska, AlaskaSat, Oct 13, 2:25 AM AKDT · 2910 days ago · 115 km deep · 15 km away
11. 2.459 km SW of Unalaska, AlaskaWed, Oct 10, 12:06 PM AKDT · 2912 days ago · 76 km deep · 2 km away
12. 1.786 km SSW of Unalaska, AlaskaTue, Oct 9, 3:48 PM AKDT · 2913 days ago · 44 km deep · 33 km away
13. 1.934 km SSW of Unalaska, AlaskaSun, Oct 7, 5:36 PM AKDT · 2915 days ago · 74 km deep · 28 km away
14. 2.159 km SW of Unalaska, AlaskaSun, Oct 7, 12:20 AM AKDT · 2916 days ago · 16 km deep · 2 km away
15. 2.471 km SW of Unalaska, AlaskaWed, Oct 3, 5:27 AM AKDT · 2919 days ago · 13 km deep · 14 km away
16. 2.592 km SSW of Unalaska, AlaskaMon, Oct 1, 2:45 PM AKDT · 2921 days ago · 44 km deep · 39 km away
17. 2.391 km E of Nikolski, AlaskaSun, Sep 30, 2:15 AM AKDT · 2923 days ago · 38 km deep · 61 km away
18. 2.0103 km E of Nikolski, AlaskaSat, Sep 29, 5:04 PM AKDT · 2923 days ago · 36 km deep · 62 km away
19. 1.879 km S of Unalaska, AlaskaSat, Sep 29, 10:04 AM AKDT · 2923 days ago · 23 km deep · 44 km away
20. 1.656 km SW of Unalaska, AlaskaFri, Sep 28, 10:42 AM AKDT · 2924 days ago · 15 km deep · 1 km away

From the USGS Earthquake Hazards Program and its partner networks, event us1000hhcx (also filed as ak20288541, ak018dijfmdk). Read Wed, Sep 30, 2026, 11:50 PM UTC.