M1.8 earthquake 79 km S of Unalaska, Alaska

Magnitude

1.8 (ML, local (Richter)), micro

Magnitude from

Alaska Earthquake Center

Local time

Tue, Oct 3, 2023, 11:55 PM AKDT

UTC

2023-10-04 07:55:47 UTC

Depth

45.7 km (28.4 mi), shallow

Epicenter

53.156° N, 166.506° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

18

• Unalaska, AlaskaPopulation 4,491. Forecast80 kmS

After

1. 2.0Fox Islands, Aleutian Islands, AlaskaWed, Oct 4, 9:07 PM AKDT · 1095 days ago · 70 km deep · 75 km away
2. 2.183 km SSE of Akutan, AlaskaThu, Oct 5, 1:05 AM AKDT · 1095 days ago · 35 km deep · 100 km away
3. 2.6142 km S of Unalaska, AlaskaThu, Oct 5, 12:33 PM AKDT · 1094 days ago · 10 km deep · 63 km away
4. 2.675 km SE of Unalaska, AlaskaThu, Oct 5, 3:45 PM AKDT · 1094 days ago · 26 km deep · 67 km away
5. 2.776 km E of Nikolski, AlaskaFri, Oct 6, 1:00 AM AKDT · 1094 days ago · 35 km deep · 84 km away
6. 2.068 km S of Unalaska, AlaskaFri, Oct 6, 9:53 AM AKDT · 1093 days ago · 51 km deep · 16 km away
7. 3.0135 km S of Unalaska, AlaskaSun, Oct 8, 2:02 PM AKDT · 1091 days ago · 10 km deep · 56 km away
8. 1.939 km SW of Unalaska, AlaskaMon, Oct 9, 10:03 AM AKDT · 1090 days ago · 75 km deep · 56 km away
9. 2.1Fox Islands, Aleutian Islands, AlaskaMon, Oct 9, 3:53 PM AKDT · 1090 days ago · 57 km deep · 40 km away
10. 2.0Fox Islands, Aleutian Islands, AlaskaTue, Oct 10, 3:03 AM AKDT · 1089 days ago · 40 km deep · 75 km away
11. 4.277 km SSW of Unalaska, AlaskaWed, Oct 11, 5:53 AM AKDT · 1088 days ago · 47 km deep · 25 km away
12. 2.0135 km S of Unalaska, AlaskaWed, Oct 11, 10:59 AM AKDT · 1088 days ago · 8 km deep · 57 km away
13. 2.962 km SSE of Unalaska, AlaskaWed, Oct 11, 1:20 PM AKDT · 1088 days ago · 27 km deep · 38 km away
14. 2.9103 km E of Nikolski, AlaskaThu, Oct 12, 4:55 PM AKDT · 1087 days ago · 35 km deep · 64 km away
15. 2.188 km SSW of Unalaska, AlaskaThu, Oct 12, 7:55 PM AKDT · 1087 days ago · 4 km deep · 34 km away
16. 2.0Fox Islands, Aleutian Islands, AlaskaFri, Oct 13, 6:12 AM AKDT · 1086 days ago · 47 km deep · 66 km away
17. 2.759 km SW of Unalaska, AlaskaSat, Oct 14, 10:49 PM AKDT · 1085 days ago · 104 km deep · 54 km away
18. 4.367 km SSE of Akutan, AlaskaMon, Oct 16, 7:52 AM AKDT · 1083 days ago · 47 km deep · 85 km away
19. 2.879 km S of Unalaska, AlaskaMon, Oct 16, 6:22 PM AKDT · 1083 days ago · 35 km deep · 12 km away
20. 3.071 km SSE of Akutan, AlaskaMon, Oct 16, 10:21 PM AKDT · 1083 days ago · 35 km deep · 81 km away
21. 3.444 km SW of Unalaska, AlaskaTue, Oct 17, 2:00 AM AKDT · 1083 days ago · 80 km deep · 64 km away
22. 2.064 km SSE of Akutan, AlaskaTue, Oct 17, 9:25 PM AKDT · 1082 days ago · 49 km deep · 84 km away
23. 2.683 km SSE of Akutan, AlaskaWed, Oct 18, 9:01 PM AKDT · 1081 days ago · 35 km deep · 93 km away
24. 3.369 km SSW of Unalaska, AlaskaThu, Oct 19, 2:46 AM AKDT · 1080 days ago · 52 km deep · 20 km away
25. 2.969 km SE of Unalaska, AlaskaThu, Oct 19, 7:44 AM AKDT · 1080 days ago · 35 km deep · 56 km away
26. 2.8127 km S of Unalaska, AlaskaThu, Oct 19, 12:38 PM AKDT · 1080 days ago · 10 km deep · 50 km away
27. 2.791 km SE of Unalaska, AlaskaThu, Oct 19, 3:56 PM AKDT · 1080 days ago · 35 km deep · 55 km away
28. 2.14 km SW of Unalaska, AlaskaFri, Oct 20, 5:30 AM AKDT · 1079 days ago · 88 km deep · 77 km away
29. 1.888 km E of Nikolski, AlaskaFri, Oct 20, 9:55 AM AKDT · 1079 days ago · 58 km deep · 71 km away
30. 3.489 km S of Unalaska, AlaskaFri, Oct 20, 11:16 AM AKDT · 1079 days ago · 35 km deep · 20 km away
31. 2.993 km S of Unalaska, AlaskaMon, Oct 23, 9:41 PM AKDT · 1076 days ago · 35 km deep · 18 km away
32. 2.791 km SSW of Unalaska, AlaskaTue, Oct 24, 11:59 PM AKDT · 1075 days ago · 35 km deep · 29 km away
33. 2.6150 km ESE of Nikolski, AlaskaWed, Oct 25, 5:53 AM AKDT · 1074 days ago · 10 km deep · 80 km away
34. 2.7141 km S of Unalaska, AlaskaWed, Oct 25, 6:58 PM AKDT · 1074 days ago · 10 km deep · 62 km away
35. 3.141 km SSE of Akutan, AlaskaWed, Oct 25, 8:50 PM AKDT · 1074 days ago · 59 km deep · 94 km away
36. 1.618 km W of Dutch Harbor, AlaskaThu, Oct 26, 7:49 AM AKDT · 1073 days ago · 6 km deep · 82 km away
37. 1.972 km SSW of Unalaska, AlaskaFri, Oct 27, 4:45 AM AKDT · 1072 days ago · 62 km deep · 36 km away
38. 2.082 km SSW of Unalaska, AlaskaFri, Oct 27, 4:49 AM AKDT · 1072 days ago · 48 km deep · 22 km away
39. 1.727 km SW of Unalaska, AlaskaSat, Oct 28, 5:42 AM AKDT · 1071 days ago · 78 km deep · 60 km away
40. 1.992 km SSW of Unalaska, AlaskaSat, Oct 28, 7:43 AM AKDT · 1071 days ago · 64 km deep · 29 km away
41. 2.1162 km ESE of Nikolski, AlaskaSat, Oct 28, 7:01 PM AKDT · 1071 days ago · 22 km deep · 86 km away
42. 1.5Fox Islands, Aleutian Islands, AlaskaSun, Oct 29, 3:38 AM AKDT · 1070 days ago · 46 km deep · 19 km away
43. 2.720 km SSW of Akutan, AlaskaSun, Oct 29, 7:33 AM AKDT · 1070 days ago · 73 km deep · 99 km away
44. 1.685 km WSW of Unalaska, AlaskaSun, Oct 29, 12:58 PM AKDT · 1070 days ago · 55 km deep · 84 km away
45. 2.1127 km S of Unalaska, AlaskaSun, Oct 29, 8:53 PM AKDT · 1070 days ago · 10 km deep · 48 km away
46. 1.697 km E of Nikolski, AlaskaMon, Oct 30, 1:35 AM AKDT · 1070 days ago · 26 km deep · 66 km away
47. 2.743 km SSE of Akutan, AlaskaMon, Oct 30, 7:08 PM AKDT · 1069 days ago · 61 km deep · 95 km away
48. 2.052 km SSE of Akutan, AlaskaMon, Oct 30, 8:33 PM AKDT · 1069 days ago · 74 km deep · 82 km away
49. 2.268 km SE of Unalaska, AlaskaTue, Oct 31, 6:51 PM AKDT · 1068 days ago · 48 km deep · 53 km away
50. 2.270 km S of Unalaska, AlaskaWed, Nov 1, 3:18 AM AKDT · 1067 days ago · 41 km deep · 19 km away
51. 2.177 km SSE of Akutan, AlaskaWed, Nov 1, 12:21 PM AKDT · 1067 days ago · 25 km deep · 86 km away
52. 1.944 km S of Unalaska, AlaskaWed, Nov 1, 7:23 PM AKDT · 1067 days ago · 63 km deep · 35 km away
53. 1.8112 km S of Unalaska, AlaskaWed, Nov 1, 7:53 PM AKDT · 1067 days ago · 11 km deep · 38 km away
54. 1.8108 km E of Nikolski, AlaskaThu, Nov 2, 12:26 AM AKDT · 1067 days ago · 6 km deep · 53 km away
55. 1.872 km SSW of Unalaska, AlaskaThu, Nov 2, 2:50 PM AKDT · 1066 days ago · 51 km deep · 20 km away
56. 3.3108 km E of Nikolski, AlaskaSat, Nov 4, 1:06 PM AKDT · 1064 days ago · 35 km deep · 53 km away
57. 1.977 km S of Unalaska, AlaskaSun, Nov 5, 1:00 AM AKST · 1064 days ago · 23 km deep · 14 km away
58. 2.884 km E of Nikolski, AlaskaSun, Nov 5, 8:16 PM AKST · 1063 days ago · 35 km deep · 84 km away
59. 3.133 km E of Unalaska, AlaskaMon, Nov 6, 6:40 AM AKST · 1062 days ago · 79 km deep · 81 km away
60. 2.295 km SSW of Unalaska, AlaskaTue, Nov 7, 10:22 AM AKST · 1061 days ago · 21 km deep · 52 km away

The first 60 of 143.

Before

1. 2.157 km SW of Unalaska, AlaskaTue, Oct 3, 1:28 PM AKDT · 1096 days ago · 7 km deep · 69 km away
2. 2.740 km S of Akutan, AlaskaTue, Oct 3, 1:08 PM AKDT · 1096 days ago · 69 km deep · 88 km away
3. 1.844 km SSW of Unalaska, AlaskaMon, Oct 2, 7:27 AM AKDT · 1097 days ago · 55 km deep · 49 km away
4. 2.3134 km ESE of Nikolski, AlaskaMon, Oct 2, 2:07 AM AKDT · 1098 days ago · 13 km deep · 86 km away
5. 4.396 km S of Unalaska, AlaskaMon, Oct 2, 2:04 AM AKDT · 1098 days ago · 10 km deep · 21 km away
6. 2.883 km SSE of Akutan, AlaskaSun, Oct 1, 2:11 PM AKDT · 1098 days ago · 32 km deep · 88 km away
7. 1.950 km S of Akutan, AlaskaThu, Sep 28, 6:45 PM AKDT · 1101 days ago · 59 km deep · 74 km away
8. 1.6Fox Islands, Aleutian Islands, AlaskaWed, Sep 27, 5:28 PM AKDT · 1102 days ago · 33 km deep · 11 km away
9. 1.83 km SE of Unalaska, AlaskaWed, Sep 27, 12:28 PM AKDT · 1102 days ago · 5 km deep · 78 km away
10. 2.174 km SW of Unalaska, AlaskaWed, Sep 27, 7:38 AM AKDT · 1102 days ago · 13 km deep · 69 km away
11. 1.676 km SE of Unalaska, AlaskaTue, Sep 26, 12:21 PM AKDT · 1103 days ago · 15 km deep · 60 km away
12. 1.671 km SE of Unalaska, AlaskaTue, Sep 26, 10:43 AM AKDT · 1103 days ago · 22 km deep · 59 km away
13. 1.671 km SE of Unalaska, AlaskaTue, Sep 26, 10:40 AM AKDT · 1103 days ago · 26 km deep · 58 km away
14. 1.968 km SE of Unalaska, AlaskaTue, Sep 26, 10:28 AM AKDT · 1103 days ago · 39 km deep · 57 km away
15. 1.678 km SE of Unalaska, AlaskaTue, Sep 26, 10:13 AM AKDT · 1103 days ago · 14 km deep · 47 km away
16. 1.687 km SSW of Unalaska, AlaskaTue, Sep 26, 5:40 AM AKDT · 1103 days ago · 34 km deep · 39 km away
17. 1.770 km S of Akutan, AlaskaMon, Sep 25, 8:03 PM AKDT · 1104 days ago · 38 km deep · 71 km away
18. 1.732 km SSE of Unalaska, AlaskaMon, Sep 25, 8:01 PM AKDT · 1104 days ago · 70 km deep · 55 km away
19. 1.774 km S of Akutan, AlaskaMon, Sep 25, 7:58 PM AKDT · 1104 days ago · 25 km deep · 70 km away
20. 1.665 km SE of Unalaska, AlaskaMon, Sep 25, 1:09 PM AKDT · 1104 days ago · 23 km deep · 68 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak023cq8d1p2. Read Sat, Oct 3, 2026, 9:39 PM UTC.