M1.8 earthquake 15 km SSW of Atka, Alaska

Magnitude

1.8 (ml), micro

Local time

Sun, Apr 18, 2021, 1:55 AM HADT

UTC

2021-04-18 10:55:07 UTC

Depth

74.0 km (46.0 mi), intermediate-depth

Epicenter

52.070° N, 174.291° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

21

After

1. 1.943 km SE of Atka, AlaskaSun, Apr 18, 4:58 AM HADT · 1986 days ago · 17 km deep · 41 km away
2. 1.861 km E of Atka, AlaskaSun, Apr 18, 6:52 AM HADT · 1986 days ago · 13 km deep · 68 km away
3. 1.678 km E of Adak, AlaskaSun, Apr 18, 8:18 AM HADT · 1986 days ago · 71 km deep · 85 km away
4. 2.933 km S of Atka, AlaskaSun, Apr 18, 9:36 PM HADT · 1986 days ago · 3 km deep · 21 km away
5. 3.9Andreanof Islands, Aleutian Islands, AlaskaSun, Apr 18, 11:06 PM HADT · 1986 days ago · 221 km deep · 75 km away
6. 2.228 km SE of Atka, AlaskaMon, Apr 19, 1:20 AM HADT · 1986 days ago · 70 km deep · 25 km away
7. 2.6102 km ESE of Adak, AlaskaMon, Apr 19, 4:10 AM HADT · 1985 days ago · 35 km deep · 91 km away
8. 1.683 km SW of Atka, AlaskaWed, Apr 21, 8:12 AM HADT · 1983 days ago · 26 km deep · 71 km away
9. 2.220 km E of Atka, AlaskaWed, Apr 21, 9:17 PM HADT · 1983 days ago · 115 km deep · 32 km away
10. 3.0Andreanof Islands, Aleutian Islands, AlaskaThu, Apr 22, 4:54 AM HADT · 1982 days ago · 192 km deep · 32 km away
11. 3.7106 km ESE of Adak, AlaskaThu, Apr 22, 10:06 AM HADT · 1982 days ago · 35 km deep · 92 km away
12. 2.237 km ESE of Atka, AlaskaThu, Apr 22, 9:25 PM HADT · 1982 days ago · 153 km deep · 42 km away
13. 2.154 km E of Atka, AlaskaThu, Apr 22, 11:15 PM HADT · 1982 days ago · 88 km deep · 61 km away
14. 2.120 km ESE of Atka, AlaskaThu, Apr 22, 11:53 PM HADT · 1982 days ago · 146 km deep · 27 km away
15. 3.168 km SE of Atka, AlaskaFri, Apr 23, 12:42 AM HADT · 1982 days ago · 35 km deep · 66 km away
16. 1.766 km SW of Atka, AlaskaFri, Apr 23, 10:50 AM HADT · 1981 days ago · 63 km deep · 53 km away
17. 3.893 km ESE of Adak, AlaskaFri, Apr 23, 4:26 PM HADT · 1981 days ago · 50 km deep · 84 km away
18. 1.771 km SW of Atka, AlaskaSat, Apr 24, 3:01 AM HADT · 1981 days ago · 38 km deep · 58 km away
19. 1.978 km SE of Atka, AlaskaSat, Apr 24, 5:05 PM HADT · 1980 days ago · 12 km deep · 75 km away
20. 2.968 km E of Atka, AlaskaSat, Apr 24, 8:38 PM HADT · 1980 days ago · 223 km deep · 78 km away
21. 2.5Andreanof Islands, Aleutian Islands, AlaskaSat, Apr 24, 8:41 PM HADT · 1980 days ago · 35 km deep · 86 km away
22. 2.256 km WNW of Atka, AlaskaMon, Apr 26, 4:38 AM HADT · 1978 days ago · 78 km deep · 57 km away
23. 1.5Andreanof Islands, Aleutian Islands, AlaskaMon, Apr 26, 4:50 PM HADT · 1978 days ago · 6 km deep · 10 km away
24. 1.943 km SSW of Atka, AlaskaTue, Apr 27, 3:59 AM HADT · 1978 days ago · 44 km deep · 28 km away
25. 2.869 km ENE of Adak, AlaskaWed, Apr 28, 12:02 AM HADT · 1977 days ago · 82 km deep · 93 km away
26. 2.194 km SE of Atka, AlaskaThu, Apr 29, 1:06 AM HADT · 1976 days ago · 18 km deep · 89 km away
27. 2.363 km S of Atka, AlaskaThu, Apr 29, 4:29 AM HADT · 1975 days ago · 21 km deep · 50 km away
28. 3.345 km SSE of Atka, AlaskaSat, May 1, 10:59 PM HADT · 1973 days ago · 56 km deep · 39 km away
29. 3.6100 km SW of Atka, AlaskaMon, May 3, 5:27 PM HADT · 1971 days ago · 35 km deep · 86 km away
30. 1.599 km SW of Atka, AlaskaWed, May 12, 3:10 PM HADT · 1962 days ago · 26 km deep · 85 km away
31. 3.199 km ESE of Adak, AlaskaThu, May 13, 8:47 AM HADT · 1961 days ago · 35 km deep · 86 km away
32. 2.684 km SSE of Atka, AlaskaThu, May 13, 8:56 AM HADT · 1961 days ago · 35 km deep · 77 km away
33. 2.955 km SW of Atka, AlaskaThu, May 13, 9:20 PM HADT · 1961 days ago · 51 km deep · 42 km away
34. 1.5Andreanof Islands, Aleutian Islands, AlaskaFri, May 14, 5:44 AM HADT · 1960 days ago · 29 km deep · 93 km away
35. 2.579 km WSW of Atka, AlaskaFri, May 14, 11:51 PM HADT · 1960 days ago · 57 km deep · 67 km away
36. 3.955 km SSE of Atka, AlaskaFri, May 21, 3:14 PM HADT · 1953 days ago · 35 km deep · 46 km away
37. 4.295 km SE of Atka, AlaskaFri, May 21, 8:50 PM HADT · 1953 days ago · 16 km deep · 90 km away
38. 4.281 km SE of Atka, AlaskaFri, May 21, 11:56 PM HADT · 1953 days ago · 41 km deep · 78 km away
39. 5.175 km SE of Atka, AlaskaSat, May 22, 12:04 AM HADT · 1953 days ago · 21 km deep · 72 km away
40. 3.879 km SE of Atka, AlaskaSat, May 22, 2:36 AM HADT · 1953 days ago · 45 km deep · 75 km away
41. 4.198 km SE of Atka, AlaskaSat, May 22, 3:51 AM HADT · 1953 days ago · 45 km deep · 93 km away
42. 4.099 km SE of Atka, AlaskaSat, May 22, 4:57 AM HADT · 1952 days ago · 35 km deep · 94 km away
43. 2.984 km E of Adak, AlaskaWed, May 26, 2:50 AM HADT · 1949 days ago · 238 km deep · 78 km away
44. 4.245 km E of Atka, AlaskaSun, May 30, 9:07 AM HADT · 1944 days ago · 148 km deep · 54 km away
45. 2.042 km SW of Atka, AlaskaMon, May 31, 6:08 AM HADT · 1943 days ago · 55 km deep · 28 km away
46. 3.3107 km SSE of Atka, AlaskaThu, Jun 3, 2:34 AM HADT · 1941 days ago · 33 km deep · 100 km away
47. 3.2Andreanof Islands, Aleutian Islands, AlaskaWed, Jun 9, 7:41 PM HADT · 1934 days ago · 35 km deep · 90 km away
48. 2.9Andreanof Islands, Aleutian Islands, AlaskaThu, Jun 10, 6:02 PM HADT · 1933 days ago · 35 km deep · 96 km away
49. 2.873 km ESE of Adak, AlaskaFri, Jun 11, 9:28 AM HADT · 1932 days ago · 70 km deep · 97 km away
50. 2.7Andreanof Islands, Aleutian Islands, AlaskaSat, Jun 12, 12:13 AM HADT · 1932 days ago · 35 km deep · 59 km away
51. 4.189 km SSE of Atka, AlaskaSat, Jun 12, 1:40 AM HADT · 1932 days ago · 30 km deep · 82 km away
52. 2.915 km NNE of Atka, AlaskaSat, Jun 12, 5:17 AM HADT · 1931 days ago · 178 km deep · 31 km away
53. 2.193 km SW of Atka, AlaskaWed, Jun 16, 12:07 AM HADT · 1928 days ago · 24 km deep · 79 km away

Before

1. 2.182 km E of Adak, AlaskaSat, Apr 17, 8:06 PM HADT · 1987 days ago · 116 km deep · 80 km away
2. 1.863 km E of Atka, AlaskaSat, Apr 17, 6:20 AM HADT · 1987 days ago · 4 km deep · 73 km away
3. 3.646 km N of Atka, AlaskaFri, Apr 16, 11:54 PM HADT · 1988 days ago · 192 km deep · 60 km away
4. 1.628 km SE of Atka, AlaskaFri, Apr 16, 5:48 PM HADT · 1988 days ago · 11 km deep · 24 km away
5. 1.978 km SSE of Atka, AlaskaFri, Apr 16, 3:54 PM HADT · 1988 days ago · 17 km deep · 70 km away
6. 1.654 km E of Atka, AlaskaFri, Apr 16, 2:59 AM HADT · 1989 days ago · 13 km deep · 62 km away
7. 3.149 km SW of Atka, AlaskaThu, Apr 15, 5:02 PM HADT · 1989 days ago · 10 km deep · 37 km away
8. 2.047 km ESE of Atka, AlaskaThu, Apr 15, 4:31 PM HADT · 1989 days ago · 65 km deep · 52 km away
9. 2.086 km S of Atka, AlaskaThu, Apr 15, 1:17 AM HADT · 1990 days ago · 26 km deep · 72 km away
10. 3.075 km WSW of Atka, AlaskaTue, Apr 13, 8:54 PM HADT · 1991 days ago · 233 km deep · 66 km away
11. 3.629 km NE of Atka, AKMon, Apr 12, 4:12 PM HADT · 1992 days ago · 174 km deep · 43 km away
12. 2.695 km ESE of Adak, AlaskaSat, Apr 10, 9:01 PM HADT · 1994 days ago · 35 km deep · 91 km away
13. 3.467 km ENE of Atka, AlaskaSat, Apr 10, 11:13 AM HADT · 1994 days ago · 10 km deep · 77 km away
14. 2.163 km ESE of Atka, AlaskaThu, Apr 8, 1:13 AM HADT · 1997 days ago · 24 km deep · 63 km away
15. 1.979 km ESE of Adak, AlaskaThu, Apr 8, 12:59 AM HADT · 1997 days ago · 32 km deep · 96 km away
16. 1.736 km W of Atka, AlaskaThu, Apr 8, 12:52 AM HADT · 1997 days ago · 25 km deep · 33 km away
17. 3.9Andreanof Islands, Aleutian Islands, AlaskaWed, Apr 7, 6:42 PM HADT · 1997 days ago · 221 km deep · 61 km away
18. 3.687 km SW of Atka, AlaskaWed, Apr 7, 5:51 PM HADT · 1997 days ago · 35 km deep · 73 km away
19. 2.59 km SSE of Atka, AlaskaWed, Apr 7, 2:06 PM HADT · 1997 days ago · 187 km deep · 9 km away
20. 3.267 km E of Atka, AlaskaWed, Apr 7, 1:49 PM HADT · 1997 days ago · 12 km deep · 76 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak0214ysbmdg. Read Sat, Sep 26, 2026, 12:28 AM UTC.