M1.7 earthquake 237 km W of Adak, Alaska

Magnitude

1.7 (ml), micro

Local time

Sun, Jul 31, 2022, 4:28 AM HADT

UTC

2022-07-31 13:28:50 UTC

Depth

13.9 km (8.6 mi), shallow

Epicenter

51.733° N, 179.929° E

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.6 km horizontally, 3.8 km in depth

Magnitude uncertainty

±0.24

Depth from

From location

Station coverage gap

343°, poorly surrounded by stations

Stations used

4

After

1. 1.9235 km W of Adak, AlaskaSun, Jul 31, 5:41 AM HADT · 1522 days ago · 8 km deep · 2 km away
2. 2.6250 km WSW of Adak, AlaskaMon, Aug 1, 4:13 AM GMT+12 · 1522 days ago · 75 km deep · 34 km away
3. 2.8197 km WSW of Adak, AlaskaSun, Jul 31, 4:17 PM HADT · 1522 days ago · 30 km deep · 83 km away
4. 3.4280 km W of Adak, AlaskaMon, Aug 1, 2:30 PM GMT+12 · 1521 days ago · 63 km deep · 49 km away
5. 1.6159 km W of Adak, AlaskaMon, Aug 1, 10:35 AM HADT · 1521 days ago · 14 km deep · 80 km away
6. 2.7268 km W of Adak, AlaskaTue, Aug 2, 5:00 PM GMT+12 · 1520 days ago · 73 km deep · 40 km away
7. 1.8247 km WSW of Adak, AlaskaMon, Aug 1, 11:25 PM GMT-12 · 1520 days ago · 29 km deep · 79 km away
8. 3.5229 km WSW of Adak, AlaskaTue, Aug 2, 2:51 AM HADT · 1520 days ago · 10 km deep · 61 km away
9. 2.5208 km WSW of Adak, AlaskaTue, Aug 2, 5:12 AM HADT · 1520 days ago · 64 km deep · 50 km away
10. 2.8200 km W of Adak, AlaskaTue, Aug 2, 9:50 AM HADT · 1520 days ago · 172 km deep · 50 km away
11. 2.5220 km WSW of Adak, AlaskaTue, Aug 2, 2:35 PM HADT · 1520 days ago · 35 km deep · 59 km away
12. 1.9204 km WSW of Adak, AlaskaFri, Aug 5, 4:31 AM HADT · 1517 days ago · 148 km deep · 45 km away
13. 1.5Rat Islands, Aleutian Islands, AlaskaSat, Aug 6, 4:49 AM GMT+12 · 1517 days ago · 39 km deep · 82 km away
14. 2.1194 km W of Adak, AlaskaFri, Aug 5, 12:28 PM HADT · 1517 days ago · 115 km deep · 46 km away
15. 1.8234 km W of Adak, AlaskaFri, Aug 5, 2:02 PM HADT · 1517 days ago · 13 km deep · 6 km away
16. 2.7237 km W of Adak, AlaskaFri, Aug 5, 9:21 PM HADT · 1516 days ago · 17 km deep · 5 km away
17. 3.0Rat Islands, Aleutian Islands, AlaskaSat, Aug 6, 11:02 PM GMT+12 · 1516 days ago · 63 km deep · 72 km away
18. 1.9164 km WSW of Adak, AlaskaSat, Aug 6, 3:18 AM HADT · 1516 days ago · 50 km deep · 96 km away
19. 1.6225 km W of Adak, AlaskaSat, Aug 6, 10:10 AM HADT · 1516 days ago · 93 km deep · 22 km away
20. 2.5266 km WSW of Adak, AlaskaMon, Aug 8, 7:40 AM GMT+12 · 1515 days ago · 35 km deep · 50 km away
21. 4.3249 km W of Adak, AlaskaMon, Aug 8, 3:57 PM GMT+12 · 1514 days ago · 135 km deep · 30 km away
22. 1.6217 km WSW of Adak, AlaskaMon, Aug 8, 1:55 AM HADT · 1514 days ago · 13 km deep · 39 km away
23. 3.2240 km WSW of Adak, AlaskaTue, Aug 9, 1:24 AM GMT-12 · 1513 days ago · 26 km deep · 66 km away
24. 2.8192 km WSW of Adak, AlaskaTue, Aug 9, 5:55 AM HADT · 1513 days ago · 31 km deep · 80 km away
25. 2.6231 km W of Adak, AlaskaTue, Aug 9, 3:51 PM HADT · 1513 days ago · 10 km deep · 7 km away
26. 1.8196 km WSW of Adak, AlaskaWed, Aug 10, 7:27 AM HADT · 1512 days ago · 13 km deep · 89 km away
27. 1.8244 km WSW of Adak, AlaskaThu, Aug 11, 11:54 AM GMT+12 · 1512 days ago · 23 km deep · 33 km away
28. 1.8292 km W of Adak, AlaskaThu, Aug 11, 8:29 PM GMT+12 · 1511 days ago · 70 km deep · 56 km away
29. 1.5202 km W of Adak, AlaskaThu, Aug 11, 4:19 AM HADT · 1511 days ago · 6 km deep · 39 km away
30. 3.3287 km WSW of Adak, AlaskaFri, Aug 12, 2:46 PM GMT+12 · 1510 days ago · 10 km deep · 93 km away
31. 1.7183 km WSW of Adak, AlaskaSun, Aug 14, 7:08 AM HADT · 1508 days ago · 20 km deep · 80 km away
32. 1.7158 km WSW of Adak, AlaskaSun, Aug 14, 7:42 AM HADT · 1508 days ago · 74 km deep · 83 km away
33. 1.8226 km WSW of Adak, AlaskaSun, Aug 14, 3:21 PM HADT · 1508 days ago · 9 km deep · 87 km away
34. 1.9277 km WSW of Adak, AlaskaMon, Aug 15, 3:30 PM GMT+12 · 1507 days ago · 53 km deep · 49 km away
35. 1.6280 km WSW of Adak, AlaskaMon, Aug 15, 4:21 PM GMT+12 · 1507 days ago · 17 km deep · 74 km away
36. 1.9Rat Islands, Aleutian Islands, AlaskaMon, Aug 15, 8:57 PM GMT+12 · 1507 days ago · 26 km deep · 96 km away
37. 1.8239 km WSW of Adak, AlaskaSun, Aug 14, 9:40 PM GMT-12 · 1507 days ago · 10 km deep · 81 km away
38. 2.0255 km WSW of Adak, AlaskaTue, Aug 16, 3:30 AM GMT+12 · 1507 days ago · 34 km deep · 49 km away
39. 1.6175 km W of Adak, AlaskaMon, Aug 15, 6:58 PM HADT · 1506 days ago · 73 km deep · 63 km away
40. 1.9168 km WSW of Adak, AlaskaTue, Aug 16, 1:32 AM HADT · 1506 days ago · 11 km deep · 74 km away
41. 1.8Rat Islands, Aleutian Islands, AlaskaWed, Aug 17, 12:24 AM GMT+12 · 1506 days ago · 5 km deep · 33 km away
42. 1.9179 km WSW of Adak, AlaskaTue, Aug 16, 4:04 PM HADT · 1506 days ago · 14 km deep · 84 km away
43. 3.4Rat Islands, Aleutian Islands, AlaskaWed, Aug 17, 1:59 PM GMT+12 · 1505 days ago · 29 km deep · 94 km away
44. 1.7196 km WSW of Adak, AlaskaWed, Aug 17, 4:43 AM HADT · 1505 days ago · 19 km deep · 61 km away
45. 2.7265 km W of Adak, AlaskaThu, Aug 18, 2:39 AM GMT+12 · 1505 days ago · 155 km deep · 40 km away
46. 1.5Rat Islands, Aleutian Islands, AlaskaThu, Aug 18, 4:37 AM GMT+12 · 1505 days ago · 60 km deep · 76 km away
47. 1.9Rat Islands, Aleutian Islands, AlaskaSun, Aug 21, 11:47 AM GMT+12 · 1502 days ago · 46 km deep · 79 km away
48. 4.2244 km W of Adak, AlaskaSun, Aug 21, 3:47 PM GMT+12 · 1501 days ago · 88 km deep · 26 km away
49. 3.3Rat Islands, Aleutian Islands, AlaskaMon, Aug 22, 2:11 AM GMT+12 · 1501 days ago · 74 km deep · 67 km away
50. 1.8210 km W of Adak, AlaskaSun, Aug 21, 11:05 AM HADT · 1501 days ago · 72 km deep · 28 km away
51. 1.8Rat Islands, Aleutian Islands, AlaskaMon, Aug 22, 9:00 AM GMT+12 · 1501 days ago · 36 km deep · 81 km away
52. 2.7Rat Islands, Aleutian Islands, AlaskaTue, Aug 23, 1:47 PM GMT+12 · 1499 days ago · 86 km deep · 94 km away
53. 2.5258 km W of Adak, AlaskaWed, Aug 24, 2:49 PM GMT+12 · 1498 days ago · 97 km deep · 22 km away
54. 1.8235 km WSW of Adak, AlaskaTue, Aug 23, 10:43 PM HADT · 1498 days ago · 15 km deep · 54 km away
55. 1.7259 km W of Adak, AlaskaThu, Aug 25, 4:08 AM GMT+12 · 1498 days ago · 5 km deep · 34 km away
56. 1.8170 km WSW of Adak, AlaskaWed, Aug 24, 7:16 AM HADT · 1498 days ago · 22 km deep · 78 km away
57. 1.8168 km W of Adak, AlaskaWed, Aug 24, 11:35 AM HADT · 1498 days ago · 7 km deep · 69 km away
58. 1.7258 km W of Adak, AlaskaThu, Aug 25, 9:28 AM GMT+12 · 1498 days ago · 9 km deep · 34 km away
59. 1.6258 km W of Adak, AlaskaThu, Aug 25, 10:26 AM GMT+12 · 1498 days ago · 8 km deep · 32 km away
60. 2.9Rat Islands, Aleutian Islands, AlaskaFri, Aug 26, 8:25 AM GMT+12 · 1497 days ago · 101 km deep · 98 km away

The first 60 of 119.

Before

1. 1.8275 km WSW of Adak, AlaskaSun, Jul 31, 10:45 AM GMT+12 · 1523 days ago · 19 km deep · 66 km away
2. 1.5Andreanof Islands, Aleutian Islands, AlaskaSat, Jul 30, 1:29 AM HADT · 1523 days ago · 15 km deep · 35 km away
3. 2.0Rat Islands, Aleutian Islands, AlaskaSat, Jul 30, 9:43 PM GMT+12 · 1523 days ago · 125 km deep · 89 km away
4. 2.5206 km WSW of Adak, AlaskaSat, Jul 30, 12:32 AM HADT · 1523 days ago · 35 km deep · 59 km away
5. 1.9253 km W of Adak, AlaskaSat, Jul 30, 7:10 AM GMT+12 · 1524 days ago · 87 km deep · 21 km away
6. 3.3262 km W of Adak, AlaskaSat, Jul 30, 2:22 AM GMT+12 · 1524 days ago · 88 km deep · 25 km away
7. 2.1234 km W of Adak, AlaskaFri, Jul 29, 4:25 AM HADT · 1524 days ago · 13 km deep · 3 km away
8. 1.7235 km W of Adak, AlaskaFri, Jul 29, 4:24 AM HADT · 1524 days ago · 7 km deep · 2 km away
9. 4.0223 km WSW of Adak, AlaskaTue, Jul 26, 5:00 AM HADT · 1527 days ago · 35 km deep · 75 km away
10. 1.7Rat Islands, Aleutian Islands, AlaskaMon, Jul 25, 8:17 PM HADT · 1527 days ago · 13 km deep · 8 km away
11. 2.7231 km WSW of Adak, AlaskaMon, Jul 25, 2:23 PM HADT · 1528 days ago · 35 km deep · 85 km away
12. 1.7251 km W of Adak, AlaskaTue, Jul 26, 6:17 AM GMT+12 · 1528 days ago · 103 km deep · 17 km away
13. 1.6259 km W of Adak, AlaskaMon, Jul 25, 7:30 PM GMT+12 · 1528 days ago · 12 km deep · 28 km away
14. 2.0202 km WSW of Adak, AlaskaSat, Jul 23, 9:24 AM HADT · 1530 days ago · 17 km deep · 59 km away
15. 1.6208 km WSW of Adak, AlaskaSat, Jul 23, 12:11 AM HADT · 1530 days ago · 9 km deep · 81 km away
16. 2.2Rat Islands, Aleutian Islands, AlaskaSat, Jul 23, 8:26 PM GMT+12 · 1530 days ago · 141 km deep · 71 km away
17. 2.9Rat Islands, Aleutian Islands, AlaskaSat, Jul 23, 11:31 AM GMT+12 · 1531 days ago · 23 km deep · 99 km away
18. 3.3Rat Islands, Aleutian Islands, AlaskaSat, Jul 23, 11:22 AM GMT+12 · 1531 days ago · 22 km deep · 96 km away
19. 2.0206 km W of Adak, AlaskaFri, Jul 22, 1:16 PM HADT · 1531 days ago · 101 km deep · 34 km away
20. 1.9192 km WSW of Adak, AlaskaFri, Jul 22, 12:56 PM HADT · 1531 days ago · 20 km deep · 93 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91067238. Read Wed, Sep 30, 2026, 12:55 PM UTC.