M1.6 earthquake 139 km S of Atka, Alaska

Magnitude

1.6 (ml), micro

Local time

Fri, Sep 25, 2020, 2:25 AM HADT

UTC

2020-09-25 11:25:54 UTC

Depth

5.4 km (3.4 mi), shallow

Epicenter

50.946° N, 174.218° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

15

After

1. 1.583 km SSE of Atka, AlaskaFri, Sep 25, 8:26 AM HADT · 2194 days ago · 8 km deep · 63 km away
2. 1.787 km SSE of Atka, AKFri, Sep 25, 9:13 AM HADT · 2194 days ago · 39 km deep · 72 km away
3. 2.2214 km S of Atka, AlaskaSat, Sep 26, 1:25 AM HADT · 2194 days ago · 8 km deep · 82 km away
4. 1.7152 km S of Atka, AlaskaSat, Sep 26, 4:06 AM HADT · 2193 days ago · 5 km deep · 13 km away
5. 1.897 km SW of Atka, AlaskaMon, Sep 28, 12:40 AM HADT · 2192 days ago · 25 km deep · 97 km away
6. 5.376 km SW of Atka, AlaskaThu, Oct 1, 1:25 AM HADT · 2189 days ago · 40 km deep · 94 km away · felt by 2
7. 4.090 km SSW of Atka, AlaskaThu, Oct 1, 4:07 PM HADT · 2188 days ago · 35 km deep · 77 km away
8. 1.683 km SW of Atka, AlaskaThu, Oct 1, 11:25 PM HADT · 2188 days ago · 26 km deep · 87 km away
9. 1.681 km SW of Atka, AlaskaFri, Oct 2, 5:45 AM HADT · 2187 days ago · 30 km deep · 90 km away
10. 2.586 km SW of Atka, AlaskaFri, Oct 2, 11:06 AM HADT · 2187 days ago · 34 km deep · 84 km away
11. 3.784 km SW of Atka, AlaskaFri, Oct 2, 5:33 PM HADT · 2187 days ago · 35 km deep · 86 km away · felt by 1
12. 1.7Andreanof Islands, Aleutian Islands, AlaskaFri, Oct 2, 7:12 PM HADT · 2187 days ago · 7 km deep · 38 km away
13. 1.576 km S of Atka, AlaskaFri, Oct 2, 11:19 PM HADT · 2187 days ago · 22 km deep · 64 km away
14. 1.586 km SSW of Atka, AlaskaSat, Oct 3, 12:29 AM HADT · 2187 days ago · 26 km deep · 77 km away
15. 1.881 km SW of Atka, AlaskaSat, Oct 3, 5:05 AM HADT · 2186 days ago · 18 km deep · 87 km away
16. 3.886 km SW of Atka, AlaskaSat, Oct 3, 5:52 AM HADT · 2186 days ago · 24 km deep · 86 km away
17. 1.749 km S of Atka, AlaskaSat, Oct 3, 11:05 AM HADT · 2186 days ago · 23 km deep · 91 km away
18. 4.1180 km SSE of Atka, AlaskaMon, Oct 5, 7:19 PM HADT · 2184 days ago · 24 km deep · 78 km away
19. 1.882 km SW of Atka, AlaskaFri, Oct 9, 9:09 AM HADT · 2180 days ago · 26 km deep · 84 km away
20. 1.851 km SSE of Atka, AlaskaSun, Oct 11, 7:34 AM HADT · 2178 days ago · 25 km deep · 89 km away
21. 2.3171 km SSE of Atka, AlaskaSun, Oct 11, 6:59 PM HADT · 2178 days ago · 12 km deep · 61 km away
22. 2.1181 km SSW of Atka, AlaskaSat, Oct 17, 9:56 AM HADT · 2172 days ago · 26 km deep · 54 km away
23. 2.892 km SE of Atka, AlaskaMon, Oct 19, 6:48 PM HADT · 2170 days ago · 35 km deep · 93 km away
24. 2.6194 km SSE of Atka, AlaskaMon, Oct 19, 7:15 PM HADT · 2170 days ago · 10 km deep · 80 km away
25. 1.6135 km SSE of Adak, AlaskaSun, Oct 25, 8:56 PM HADT · 2164 days ago · 26 km deep · 96 km away
26. 1.699 km SSE of Atka, AlaskaMon, Oct 26, 8:47 AM HADT · 2163 days ago · 26 km deep · 52 km away
27. 1.6104 km SSW of Atka, AlaskaTue, Oct 27, 11:54 AM HADT · 2162 days ago · 5 km deep · 71 km away
28. 2.0161 km SSE of Atka, AlaskaWed, Oct 28, 3:22 PM HADT · 2161 days ago · 7 km deep · 44 km away
29. 2.8Andreanof Islands, Aleutian Islands, AlaskaSat, Oct 31, 7:40 AM HADT · 2158 days ago · 26 km deep · 16 km away
30. 2.4202 km SSE of Adak, AlaskaMon, Nov 2, 9:02 PM HAST · 2156 days ago · 89 km deep · 94 km away
31. 2.6166 km SSE of Atka, AlaskaTue, Nov 3, 2:31 PM HAST · 2155 days ago · 10 km deep · 78 km away
32. 2.9191 km SSE of Atka, AlaskaThu, Nov 12, 12:54 AM HAST · 2147 days ago · 10 km deep · 88 km away
33. 3.090 km SSE of Atka, AlaskaFri, Nov 13, 4:03 AM HAST · 2145 days ago · 10 km deep · 79 km away
34. 2.4161 km SSE of Atka, AlaskaSat, Nov 14, 9:57 PM HAST · 2144 days ago · 10 km deep · 57 km away
35. 1.988 km S of Atka, AlaskaSun, Nov 15, 2:57 AM HAST · 2143 days ago · 13 km deep · 51 km away
36. 3.669 km SSW of Atka, AlaskaSun, Nov 15, 6:44 AM HAST · 2143 days ago · 25 km deep · 82 km away
37. 3.2206 km SSE of Atka, AlaskaMon, Nov 16, 1:13 AM HAST · 2143 days ago · 27 km deep · 89 km away
38. 2.883 km SSW of Atka, AlaskaMon, Nov 16, 11:14 PM HAST · 2142 days ago · 28 km deep · 61 km away
39. 2.056 km SSW of Atka, AlaskaMon, Nov 23, 5:18 AM HAST · 2135 days ago · 23 km deep · 96 km away

Before

1. 2.6195 km S of Atka, AlaskaWed, Sep 23, 12:02 AM HADT · 2197 days ago · 10 km deep · 58 km away
2. 1.982 km SW of Atka, AlaskaTue, Sep 22, 3:36 PM HADT · 2197 days ago · 41 km deep · 92 km away
3. 2.8191 km S of Atka, AlaskaMon, Sep 21, 1:34 PM HADT · 2198 days ago · 10 km deep · 54 km away
4. 2.660 km SSW of Atka, AlaskaSat, Sep 19, 5:02 AM HADT · 2200 days ago · 30 km deep · 89 km away
5. 2.7176 km SSE of Atka, AlaskaWed, Sep 16, 9:03 AM HADT · 2203 days ago · 10 km deep · 67 km away
6. 2.2211 km SSE of Atka, AlaskaMon, Sep 14, 8:10 AM HADT · 2205 days ago · 10 km deep · 93 km away
7. 2.7166 km SSE of Atka, AlaskaMon, Sep 14, 6:37 AM HADT · 2205 days ago · 10 km deep · 73 km away
8. 1.979 km SSW of Atka, AlaskaSat, Sep 12, 9:56 PM HADT · 2207 days ago · 13 km deep · 71 km away
9. 2.2148 km S of Atka, AlaskaTue, Sep 8, 1:31 AM HADT · 2212 days ago · 14 km deep · 21 km away
10. 2.660 km S of Atka, AlaskaThu, Sep 3, 8:48 PM HADT · 2216 days ago · 35 km deep · 79 km away
11. 3.1162 km SSE of Atka, AlaskaTue, Sep 1, 2:00 PM HADT · 2218 days ago · 21 km deep · 48 km away
12. 2.7102 km ESE of Adak, AlaskaSat, Aug 29, 1:52 PM HADT · 2221 days ago · 35 km deep · 97 km away
13. 2.8190 km SSE of Atka, AlaskaFri, Aug 28, 5:27 PM HADT · 2222 days ago · 10 km deep · 94 km away
14. 1.5120 km SSW of Atka, AlaskaWed, Aug 26, 6:46 PM HADT · 2224 days ago · 9 km deep · 72 km away
15. 1.6102 km ESE of Adak, AlaskaWed, Aug 26, 2:29 PM HADT · 2224 days ago · 30 km deep · 97 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak020cd29pgj. Read Tue, Sep 29, 2026, 12:10 AM UTC.