M1.8 earthquake 77 km ESE of Adak, Alaska

Magnitude

1.8 (ml), micro

Local time

Sun, Feb 21, 2021, 4:42 AM HAST

UTC

2021-02-21 14:42:53 UTC

Depth

27.2 km (16.9 mi), shallow

Epicenter

51.501° N, 175.684° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

18

After

1. 1.874 km SE of Adak, AlaskaSun, Feb 21, 5:13 AM HAST · 2041 days ago · 18 km deep · 18 km away
2. 2.772 km SSE of Adak, AlaskaSun, Feb 21, 1:02 PM HAST · 2040 days ago · 35 km deep · 33 km away
3. 2.7105 km ESE of Adak, AlaskaSun, Feb 21, 3:45 PM HAST · 2040 days ago · 33 km deep · 30 km away
4. 2.872 km SE of Adak, AlaskaSun, Feb 21, 5:03 PM HAST · 2040 days ago · 31 km deep · 28 km away
5. 1.961 km SE of Adak, AlaskaSun, Feb 21, 9:33 PM HAST · 2040 days ago · 23 km deep · 25 km away
6. 1.835 km SSE of Adak, AlaskaMon, Feb 22, 3:51 PM HAST · 2039 days ago · 49 km deep · 59 km away
7. 2.098 km ESE of Adak, AlaskaMon, Feb 22, 3:54 PM HAST · 2039 days ago · 37 km deep · 29 km away
8. 1.845 km SW of Adak, AlaskaMon, Feb 22, 7:25 PM HAST · 2039 days ago · 63 km deep · 98 km away
9. 3.362 km WSW of Atka, AlaskaTue, Feb 23, 5:02 AM HAST · 2039 days ago · 69 km deep · 71 km away
10. 3.161 km ESE of Adak, AlaskaThu, Feb 25, 5:38 AM HAST · 2037 days ago · 35 km deep · 16 km away
11. 2.729 km N of Adak, AlaskaThu, Feb 25, 5:58 AM HAST · 2037 days ago · 142 km deep · 96 km away
12. 1.936 km ESE of Adak, AlaskaThu, Feb 25, 1:15 PM HAST · 2036 days ago · 71 km deep · 44 km away
13. 1.896 km SW of Atka, AlaskaThu, Feb 25, 11:09 PM HAST · 2036 days ago · 30 km deep · 36 km away
14. 1.763 km SSW of Adak, AlaskaFri, Feb 26, 2:13 PM HAST · 2035 days ago · 27 km deep · 91 km away
15. 2.067 km SE of Adak, AlaskaFri, Feb 26, 7:53 PM HAST · 2035 days ago · 26 km deep · 21 km away
16. 1.761 km SE of Adak, AlaskaFri, Feb 26, 7:55 PM HAST · 2035 days ago · 13 km deep · 28 km away
17. 1.754 km S of Adak, AlaskaSat, Feb 27, 6:32 AM HAST · 2035 days ago · 22 km deep · 60 km away
18. 1.993 km ESE of Adak, AlaskaSat, Feb 27, 4:13 PM HAST · 2034 days ago · 26 km deep · 17 km away
19. 1.546 km SSE of Adak, AlaskaSat, Feb 27, 9:11 PM HAST · 2034 days ago · 28 km deep · 46 km away
20. 4.266 km SSW of Atka, AlaskaMon, Mar 1, 6:32 AM HAST · 2033 days ago · 63 km deep · 74 km away
21. 2.986 km SE of Adak, AlaskaMon, Mar 1, 11:49 PM HAST · 2032 days ago · 35 km deep · 12 km away
22. 1.758 km SE of Adak, AlaskaTue, Mar 2, 5:04 PM HAST · 2031 days ago · 32 km deep · 21 km away
23. 4.461 km WSW of Atka, AlaskaTue, Mar 2, 8:51 PM HAST · 2031 days ago · 67 km deep · 67 km away · felt by 1
24. 2.655 km SSW of Adak, AlaskaWed, Mar 3, 1:08 PM HAST · 2030 days ago · 35 km deep · 90 km away
25. 3.549 km SSW of Adak, AlaskaThu, Mar 4, 2:39 AM HAST · 2030 days ago · 38 km deep · 85 km away
26. 2.773 km SW of Atka, AlaskaThu, Mar 4, 5:56 PM HAST · 2029 days ago · 35 km deep · 59 km away
27. 1.952 km SSW of Adak, AlaskaFri, Mar 5, 12:22 PM HAST · 2028 days ago · 37 km deep · 85 km away
28. 2.537 km NE of Adak, AlaskaFri, Mar 5, 1:36 PM HAST · 2028 days ago · 110 km deep · 82 km away
29. 3.522 km NNW of Adak, AlaskaFri, Mar 5, 8:22 PM HAST · 2028 days ago · 153 km deep · 97 km away
30. 1.682 km SE of Adak, AlaskaSat, Mar 6, 5:37 AM HAST · 2028 days ago · 25 km deep · 7 km away
31. 1.9Andreanof Islands, Aleutian Islands, AlaskaSat, Mar 6, 4:34 PM HAST · 2027 days ago · 20 km deep · 6 km away
32. 1.7Andreanof Islands, Aleutian Islands, AlaskaMon, Mar 8, 4:04 AM HAST · 2026 days ago · 23 km deep · 31 km away
33. 1.762 km SE of Adak, AlaskaMon, Mar 8, 4:19 AM HAST · 2026 days ago · 21 km deep · 30 km away
34. 1.972 km ESE of Adak, AlaskaMon, Mar 8, 7:05 PM HAST · 2025 days ago · 51 km deep · 5 km away
35. 3.181 km SSW of Atka, AlaskaTue, Mar 9, 1:34 PM HAST · 2024 days ago · 35 km deep · 71 km away
36. 2.867 km SE of Adak, AlaskaWed, Mar 10, 12:01 AM HAST · 2024 days ago · 30 km deep · 25 km away
37. 1.556 km E of Adak, AlaskaWed, Mar 10, 12:19 AM HAST · 2024 days ago · 47 km deep · 33 km away
38. 1.859 km SSW of Atka, AlaskaWed, Mar 10, 6:42 PM HAST · 2023 days ago · 15 km deep · 78 km away
39. 1.845 km E of Adak, AlaskaThu, Mar 11, 1:13 AM HAST · 2023 days ago · 97 km deep · 52 km away
40. 2.00 km E of Adak, AlaskaThu, Mar 11, 7:09 PM HAST · 2022 days ago · 98 km deep · 77 km away
41. 1.853 km SSW of Adak, AlaskaFri, Mar 12, 12:33 AM HAST · 2022 days ago · 24 km deep · 83 km away
42. 2.783 km S of Atka, AlaskaFri, Mar 12, 8:38 PM HAST · 2021 days ago · 69 km deep · 100 km away
43. 1.551 km SE of Adak, AlaskaSat, Mar 13, 2:15 AM HAST · 2021 days ago · 25 km deep · 35 km away
44. 1.938 km SSW of Atka, AlaskaSat, Mar 13, 4:27 PM HAST · 2020 days ago · 57 km deep · 96 km away
45. 2.792 km SW of Atka, AlaskaMon, Mar 15, 2:30 AM HADT · 2019 days ago · 34 km deep · 37 km away
46. 2.567 km SSW of Adak, AlaskaMon, Mar 15, 9:36 AM HADT · 2019 days ago · 35 km deep · 90 km away
47. 1.983 km SW of Atka, AlaskaMon, Mar 15, 12:54 PM HADT · 2018 days ago · 26 km deep · 56 km away
48. 2.1100 km ESE of Adak, AlaskaMon, Mar 15, 5:14 PM HADT · 2018 days ago · 26 km deep · 27 km away
49. 1.555 km SSW of Adak, AlaskaTue, Mar 16, 6:52 AM HADT · 2018 days ago · 36 km deep · 97 km away
50. 2.087 km ESE of Adak, AlaskaTue, Mar 16, 9:39 AM HADT · 2018 days ago · 36 km deep · 18 km away
51. 1.951 km E of Adak, AlaskaTue, Mar 16, 1:13 PM HADT · 2017 days ago · 131 km deep · 40 km away
52. 1.689 km SW of Atka, AlaskaTue, Mar 16, 1:41 PM HADT · 2017 days ago · 26 km deep · 40 km away
53. 1.758 km SSW of Adak, AlaskaWed, Mar 17, 9:31 AM HADT · 2017 days ago · 30 km deep · 96 km away
54. 2.043 km SSW of Atka, AlaskaWed, Mar 17, 1:18 PM HADT · 2016 days ago · 47 km deep · 98 km away
55. 1.565 km SE of Adak, AlaskaThu, Mar 18, 3:50 AM HADT · 2016 days ago · 13 km deep · 29 km away
56. 1.872 km SW of Atka, AlaskaFri, Mar 19, 4:18 AM HADT · 2015 days ago · 25 km deep · 59 km away
57. 2.6100 km ESE of Adak, AlaskaFri, Mar 19, 7:30 AM HADT · 2015 days ago · 28 km deep · 29 km away
58. 2.5104 km ESE of Adak, AlaskaFri, Mar 19, 7:35 AM HADT · 2015 days ago · 35 km deep · 29 km away
59. 3.192 km SE of Adak, AlaskaFri, Mar 19, 9:13 AM HADT · 2015 days ago · 32 km deep · 16 km away
60. 1.853 km SSW of Atka, AlaskaSat, Mar 20, 9:09 PM HADT · 2013 days ago · 8 km deep · 85 km away

The first 60 of 150.

Before

1. 1.964 km SSW of Adak, AlaskaSat, Feb 20, 10:33 PM HAST · 2041 days ago · 27 km deep · 95 km away
2. 1.864 km SSE of Adak, AlaskaSat, Feb 20, 2:09 AM HAST · 2042 days ago · 22 km deep · 46 km away
3. 1.973 km SSW of Atka, AlaskaSat, Feb 20, 12:51 AM HAST · 2042 days ago · 14 km deep · 87 km away
4. 1.519 km SW of Adak, AlaskaFri, Feb 19, 10:28 PM HAST · 2042 days ago · 73 km deep · 81 km away
5. 1.797 km ESE of Adak, AlaskaFri, Feb 19, 7:02 PM HAST · 2042 days ago · 29 km deep · 27 km away
6. 1.991 km ESE of Adak, AlaskaFri, Feb 19, 5:06 PM HAST · 2042 days ago · 25 km deep · 21 km away
7. 4.171 km SSW of Adak, AlaskaFri, Feb 19, 5:33 AM HAST · 2043 days ago · 35 km deep · 87 km away · felt by 1
8. 3.075 km SSE of Adak, AlaskaFri, Feb 19, 4:40 AM HAST · 2043 days ago · 35 km deep · 34 km away
9. 2.059 km SE of Adak, AlaskaThu, Feb 18, 8:48 PM HAST · 2043 days ago · 41 km deep · 29 km away
10. 1.884 km S of Atka, AlaskaWed, Feb 17, 10:50 PM HAST · 2044 days ago · 3 km deep · 96 km away
11. 1.694 km SW of Atka, AlaskaWed, Feb 17, 7:56 PM HAST · 2044 days ago · 20 km deep · 42 km away
12. 1.766 km SSE of Adak, AlaskaWed, Feb 17, 8:45 AM HAST · 2045 days ago · 14 km deep · 55 km away
13. 1.945 km SSE of Adak, AlaskaWed, Feb 17, 3:20 AM HAST · 2045 days ago · 48 km deep · 52 km away
14. 2.860 km WSW of Atka, AlaskaWed, Feb 17, 1:24 AM HAST · 2045 days ago · 67 km deep · 68 km away
15. 2.2162 km SE of Adak, AlaskaWed, Feb 17, 1:16 AM HAST · 2045 days ago · 5 km deep · 90 km away
16. 3.7100 km SW of Atka, AlaskaTue, Feb 16, 9:50 AM HAST · 2046 days ago · 40 km deep · 38 km away
17. 2.656 km S of Adak, AlaskaTue, Feb 16, 4:36 AM HAST · 2046 days ago · 35 km deep · 66 km away
18. 1.861 km SSW of Adak, AlaskaMon, Feb 15, 4:54 PM HAST · 2046 days ago · 33 km deep · 98 km away
19. 1.649 km SSW of Adak, AlaskaMon, Feb 15, 2:19 PM HAST · 2046 days ago · 27 km deep · 90 km away
20. 3.176 km SSW of Atka, AlaskaThu, Feb 11, 8:19 AM HAST · 2051 days ago · 35 km deep · 62 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak0212e8j8d2. Read Thu, Sep 24, 2026, 8:41 AM UTC.