M1.9 earthquake 235 km W of Adak, Alaska

Magnitude

1.9 (ML, local (Richter)), micro

Magnitude from

Alaska Earthquake Center

Local time

Mon, Aug 21, 2023, 6:56 AM HADT

UTC

2023-08-21 15:56:49 UTC

Depth

13.2 km (8.2 mi), shallow

Epicenter

51.747° N, 179.953° E

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

24

After

1. 2.1Andreanof Islands, Aleutian Islands, AlaskaMon, Aug 21, 7:18 AM HADT · 1137 days ago · 37 km deep · 86 km away
2. 1.9Rat Islands, Aleutian Islands, AlaskaMon, Aug 21, 8:35 AM HADT · 1137 days ago · 13 km deep · 2 km away
3. 2.1284 km WSW of Adak, AlaskaTue, Aug 22, 8:01 AM GMT+12 · 1137 days ago · 56 km deep · 56 km away
4. 1.8171 km WSW of Adak, AlaskaMon, Aug 21, 6:22 PM HADT · 1137 days ago · 32 km deep · 86 km away
5. 2.8Rat Islands, Aleutian Islands, AlaskaTue, Aug 22, 1:37 AM HADT · 1136 days ago · 98 km deep · 6 km away
6. 3.8245 km WSW of Adak, AlaskaWed, Aug 23, 2:31 AM GMT+12 · 1136 days ago · 68 km deep · 41 km away
7. 1.7242 km WSW of Adak, AlaskaWed, Aug 23, 3:44 AM GMT+12 · 1136 days ago · 52 km deep · 38 km away
8. 3.8Rat Islands, Aleutian Islands, AlaskaWed, Aug 23, 9:39 AM GMT+12 · 1136 days ago · 78 km deep · 92 km away
9. 3.8244 km WSW of Adak, AlaskaWed, Aug 23, 10:49 AM GMT+12 · 1136 days ago · 52 km deep · 44 km away
10. 2.2243 km WSW of Adak, AlaskaWed, Aug 23, 10:54 AM GMT+12 · 1136 days ago · 57 km deep · 38 km away
11. 1.7156 km W of Adak, AlaskaWed, Aug 23, 12:19 AM HADT · 1135 days ago · 91 km deep · 79 km away
12. 2.1242 km WSW of Adak, AlaskaWed, Aug 23, 11:11 PM GMT+12 · 1135 days ago · 60 km deep · 37 km away
13. 3.6Rat Islands, Aleutian Islands, AlaskaThu, Aug 24, 7:13 AM GMT+12 · 1135 days ago · 71 km deep · 87 km away
14. 1.6234 km WSW of Adak, AlaskaWed, Aug 23, 2:13 PM HADT · 1135 days ago · 16 km deep · 76 km away
15. 1.5257 km W of Adak, AlaskaThu, Aug 24, 1:36 PM GMT+12 · 1135 days ago · 4 km deep · 30 km away
16. 3.0Andreanof Islands, Aleutian Islands, AlaskaThu, Aug 24, 12:10 AM HADT · 1134 days ago · 35 km deep · 67 km away
17. 1.5170 km WSW of Adak, AlaskaThu, Aug 24, 2:15 AM HADT · 1134 days ago · 29 km deep · 88 km away
18. 1.7194 km WSW of Adak, AlaskaThu, Aug 24, 7:24 AM HADT · 1134 days ago · 17 km deep · 92 km away
19. 1.6176 km WSW of Adak, AlaskaThu, Aug 24, 8:35 AM HADT · 1134 days ago · 24 km deep · 75 km away
20. 1.9235 km W of Adak, AlaskaFri, Aug 25, 12:03 PM HADT · 1133 days ago · 22 km deep · 10 km away
21. 1.6275 km W of Adak, AlaskaSun, Aug 27, 3:01 AM GMT+12 · 1132 days ago · 51 km deep · 47 km away
22. 1.9268 km W of Adak, AlaskaSun, Aug 27, 4:16 PM GMT+12 · 1131 days ago · 72 km deep · 34 km away
23. 2.1227 km WSW of Adak, AlaskaSat, Aug 26, 10:45 PM HADT · 1131 days ago · 13 km deep · 72 km away
24. 2.0235 km WSW of Adak, AlaskaSat, Aug 26, 10:52 PM HADT · 1131 days ago · 16 km deep · 77 km away
25. 1.6232 km WSW of Adak, AlaskaSun, Aug 27, 2:54 AM HADT · 1131 days ago · 26 km deep · 78 km away
26. 2.1234 km WSW of Adak, AlaskaSun, Aug 27, 3:09 AM HADT · 1131 days ago · 7 km deep · 30 km away
27. 1.8209 km W of Adak, AlaskaSun, Aug 27, 8:33 AM HADT · 1131 days ago · 67 km deep · 30 km away
28. 2.0222 km W of Adak, AlaskaSun, Aug 27, 9:26 AM HADT · 1131 days ago · 97 km deep · 14 km away
29. 2.7213 km W of Adak, AlaskaMon, Aug 28, 2:11 AM HADT · 1130 days ago · 98 km deep · 22 km away
30. 2.3200 km W of Adak, AlaskaMon, Aug 28, 5:52 AM HADT · 1130 days ago · 75 km deep · 37 km away
31. 3.2Rat Islands, Aleutian Islands, AlaskaTue, Aug 29, 3:54 AM GMT+12 · 1130 days ago · 111 km deep · 93 km away
32. 2.4200 km WSW of Adak, AlaskaMon, Aug 28, 3:40 PM HADT · 1130 days ago · 53 km deep · 60 km away
33. 2.0284 km W of Adak, AlaskaTue, Aug 29, 1:42 PM GMT+12 · 1130 days ago · 59 km deep · 52 km away
34. 2.0149 km WSW of Adak, AlaskaMon, Aug 28, 9:20 PM HADT · 1129 days ago · 11 km deep · 100 km away
35. 1.7238 km W of Adak, AlaskaTue, Aug 29, 6:24 AM HADT · 1129 days ago · 9 km deep · 4 km away
36. 2.1244 km WSW of Adak, AlaskaWed, Aug 30, 6:58 AM GMT+12 · 1129 days ago · 11 km deep · 39 km away
37. 1.9187 km W of Adak, AlaskaThu, Aug 31, 11:56 AM HADT · 1127 days ago · 80 km deep · 49 km away
38. 2.5265 km W of Adak, AlaskaFri, Sep 1, 4:20 PM GMT+12 · 1126 days ago · 67 km deep · 35 km away
39. 2.5Rat Islands, Aleutian Islands, AlaskaSat, Sep 2, 3:22 PM GMT+12 · 1126 days ago · 75 km deep · 87 km away
40. 2.3Rat Islands, Aleutian Islands, AlaskaSat, Sep 2, 3:23 PM GMT+12 · 1126 days ago · 71 km deep · 83 km away
41. 2.2240 km WSW of Adak, AlaskaSat, Sep 2, 9:59 PM GMT-12 · 1124 days ago · 13 km deep · 78 km away
42. 2.2209 km W of Adak, AlaskaSun, Sep 3, 1:51 AM HADT · 1124 days ago · 73 km deep · 28 km away
43. 2.8172 km W of Adak, AlaskaSun, Sep 3, 9:06 AM HADT · 1124 days ago · 172 km deep · 69 km away
44. 2.1208 km W of Adak, AlaskaSun, Sep 3, 5:25 PM HADT · 1124 days ago · 63 km deep · 34 km away
45. 1.9239 km WSW of Adak, AlaskaSun, Sep 3, 9:05 PM GMT-12 · 1123 days ago · 13 km deep · 65 km away
46. 1.7Rat Islands, Aleutian Islands, AlaskaMon, Sep 4, 9:58 PM GMT+12 · 1123 days ago · 35 km deep · 86 km away
47. 2.9Rat Islands, Aleutian Islands, AlaskaTue, Sep 5, 2:42 AM GMT+12 · 1123 days ago · 59 km deep · 81 km away
48. 2.1209 km WSW of Adak, AlaskaMon, Sep 4, 10:33 AM HADT · 1123 days ago · 16 km deep · 59 km away
49. 3.0214 km W of Adak, AlaskaMon, Sep 4, 2:12 PM HADT · 1123 days ago · 106 km deep · 21 km away
50. 2.8204 km WSW of Adak, AlaskaMon, Sep 4, 11:19 PM HADT · 1122 days ago · 35 km deep · 99 km away
51. 2.0284 km W of Adak, AlaskaWed, Sep 6, 5:26 AM GMT+12 · 1122 days ago · 18 km deep · 49 km away
52. 1.8211 km W of Adak, AlaskaTue, Sep 5, 8:10 PM HADT · 1121 days ago · 64 km deep · 34 km away
53. 2.0238 km WSW of Adak, AlaskaTue, Sep 5, 6:26 PM GMT-12 · 1121 days ago · 54 km deep · 40 km away
54. 1.8155 km WSW of Adak, AlaskaTue, Sep 5, 10:29 PM HADT · 1121 days ago · 39 km deep · 96 km away
55. 1.5234 km W of Adak, AlaskaTue, Sep 5, 11:01 PM HADT · 1121 days ago · 23 km deep · 1 km away
56. 1.9185 km WSW of Adak, AlaskaWed, Sep 6, 12:45 AM HADT · 1121 days ago · 22 km deep · 72 km away
57. 1.6175 km WSW of Adak, AlaskaThu, Sep 7, 12:06 AM HADT · 1120 days ago · 17 km deep · 87 km away
58. 1.5211 km W of Adak, AlaskaThu, Sep 7, 1:44 AM HADT · 1120 days ago · 13 km deep · 26 km away
59. 1.5Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 7, 5:28 AM HADT · 1120 days ago · 12 km deep · 90 km away
60. 3.2220 km W of Adak, AlaskaSat, Sep 9, 12:55 AM HADT · 1118 days ago · 242 km deep · 58 km away

The first 60 of 152.

Before

1. 2.0235 km W of Adak, AlaskaMon, Aug 21, 6:32 AM HADT · 1137 days ago · 13 km deep · 1 km away
2. 3.9233 km W of Adak, AlaskaMon, Aug 21, 5:45 AM HADT · 1137 days ago · 19 km deep · 3 km away
3. 2.0144 km WSW of Adak, AlaskaSun, Aug 20, 6:15 PM HADT · 1138 days ago · 7 km deep · 95 km away
4. 2.8Rat Islands, Aleutian Islands, AlaskaMon, Aug 21, 2:57 AM GMT+12 · 1138 days ago · 95 km deep · 95 km away
5. 2.8Rat Islands, Aleutian Islands, AlaskaSun, Aug 20, 10:10 PM GMT+12 · 1138 days ago · 115 km deep · 91 km away
6. 2.1Rat Islands, Aleutian Islands, AlaskaSun, Aug 20, 5:02 AM GMT+12 · 1139 days ago · 28 km deep · 80 km away
7. 1.8168 km W of Adak, AlaskaFri, Aug 18, 3:05 PM HADT · 1140 days ago · 8 km deep · 67 km away
8. 1.9264 km WSW of Adak, AlaskaSat, Aug 19, 5:34 AM GMT+12 · 1140 days ago · 12 km deep · 72 km away
9. 3.2236 km W of Adak, AlaskaFri, Aug 18, 4:57 AM HADT · 1140 days ago · 68 km deep · 26 km away
10. 1.7232 km W of Adak, AlaskaFri, Aug 18, 2:52 AM HADT · 1140 days ago · 13 km deep · 5 km away
11. 2.0292 km WSW of Adak, AlaskaFri, Aug 18, 2:06 PM GMT+12 · 1141 days ago · 20 km deep · 87 km away
12. 2.1206 km WSW of Adak, AlaskaThu, Aug 17, 2:59 PM HADT · 1141 days ago · 26 km deep · 59 km away
13. 2.1208 km WSW of Adak, AlaskaThu, Aug 17, 2:59 PM HADT · 1141 days ago · 26 km deep · 60 km away
14. 2.5Rat Islands, Aleutian Islands, AlaskaFri, Aug 18, 9:14 AM GMT+12 · 1141 days ago · 27 km deep · 99 km away
15. 2.6296 km W of Adak, AlaskaFri, Aug 18, 3:01 AM GMT+12 · 1141 days ago · 59 km deep · 63 km away
16. 2.8264 km W of Adak, AlaskaFri, Aug 18, 2:00 AM GMT+12 · 1141 days ago · 154 km deep · 34 km away
17. 1.9275 km WSW of Adak, AlaskaFri, Aug 18, 1:23 AM GMT+12 · 1141 days ago · 20 km deep · 81 km away
18. 4.0229 km W of Adak, AlaskaWed, Aug 16, 1:19 PM HADT · 1142 days ago · 223 km deep · 41 km away
19. 1.7186 km WSW of Adak, AlaskaWed, Aug 16, 11:30 AM HADT · 1142 days ago · 25 km deep · 96 km away
20. 1.6189 km WSW of Adak, AlaskaTue, Aug 15, 10:50 PM HADT · 1142 days ago · 64 km deep · 59 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak023aplhh2f. Read Thu, Oct 1, 2026, 2:53 PM UTC.