M1.8 earthquake 236 km W of Adak, Alaska

Magnitude

1.8 (ml), micro

Local time

Wed, Jul 20, 2022, 6:07 AM HADT

UTC

2022-07-20 15:07:57 UTC

Depth

7.5 km (4.7 mi), shallow

Epicenter

51.724° N, 179.951° E

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.9 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.30

Depth from

From location

Station coverage gap

267°, poorly surrounded by stations

Stations used

6

After

1. 1.6234 km W of Adak, AlaskaWed, Jul 20, 6:54 AM HADT · 1532 days ago · 13 km deep · 3 km away
2. 2.0234 km W of Adak, AlaskaWed, Jul 20, 11:16 AM HADT · 1532 days ago · 7 km deep · 2 km away
3. 1.6232 km W of Adak, AlaskaWed, Jul 20, 3:25 PM HADT · 1532 days ago · 13 km deep · 9 km away
4. 2.0199 km W of Adak, AlaskaWed, Jul 20, 3:26 PM HADT · 1532 days ago · 103 km deep · 42 km away
5. 1.6233 km W of Adak, AlaskaWed, Jul 20, 9:06 PM HADT · 1531 days ago · 13 km deep · 7 km away
6. 2.9Rat Islands, Aleutian Islands, AlaskaThu, Jul 21, 9:12 PM GMT+12 · 1531 days ago · 46 km deep · 90 km away
7. 1.6233 km W of Adak, AlaskaThu, Jul 21, 3:39 AM HADT · 1531 days ago · 13 km deep · 4 km away
8. 1.5234 km W of Adak, AlaskaThu, Jul 21, 5:44 AM HADT · 1531 days ago · 16 km deep · 3 km away
9. 2.1251 km W of Adak, AlaskaFri, Jul 22, 6:03 AM GMT+12 · 1531 days ago · 13 km deep · 24 km away
10. 3.9Rat Islands, Aleutian Islands, AlaskaFri, Jul 22, 7:05 AM GMT+12 · 1531 days ago · 43 km deep · 56 km away
11. 1.7234 km W of Adak, AlaskaThu, Jul 21, 3:11 PM HADT · 1531 days ago · 14 km deep · 4 km away
12. 1.5235 km W of Adak, AlaskaThu, Jul 21, 8:23 PM HADT · 1530 days ago · 13 km deep · 3 km away
13. 1.7Rat Islands, Aleutian Islands, AlaskaThu, Jul 21, 11:12 PM HADT · 1530 days ago · 13 km deep · 4 km away
14. 2.5237 km W of Adak, AlaskaFri, Jul 22, 9:33 PM GMT+12 · 1530 days ago · 10 km deep · 12 km away
15. 1.7235 km WSW of Adak, AlaskaFri, Jul 22, 3:11 AM HADT · 1530 days ago · 13 km deep · 64 km away
16. 3.3145 km WSW of Adak, AlaskaFri, Jul 22, 11:31 AM HADT · 1530 days ago · 83 km deep · 95 km away
17. 2.7233 km W of Adak, AlaskaFri, Jul 22, 11:40 AM HADT · 1530 days ago · 10 km deep · 3 km away
18. 2.1Rat Islands, Aleutian Islands, AlaskaSat, Jul 23, 8:47 AM GMT+12 · 1530 days ago · 80 km deep · 86 km away
19. 1.9192 km WSW of Adak, AlaskaFri, Jul 22, 12:56 PM HADT · 1530 days ago · 20 km deep · 91 km away
20. 2.0206 km W of Adak, AlaskaFri, Jul 22, 1:16 PM HADT · 1530 days ago · 101 km deep · 33 km away
21. 3.3Rat Islands, Aleutian Islands, AlaskaSat, Jul 23, 11:22 AM GMT+12 · 1530 days ago · 22 km deep · 96 km away
22. 2.9Rat Islands, Aleutian Islands, AlaskaSat, Jul 23, 11:31 AM GMT+12 · 1530 days ago · 23 km deep · 99 km away
23. 2.2Rat Islands, Aleutian Islands, AlaskaSat, Jul 23, 8:26 PM GMT+12 · 1529 days ago · 141 km deep · 72 km away
24. 1.6208 km WSW of Adak, AlaskaSat, Jul 23, 12:11 AM HADT · 1529 days ago · 9 km deep · 80 km away
25. 2.0202 km WSW of Adak, AlaskaSat, Jul 23, 9:24 AM HADT · 1529 days ago · 17 km deep · 58 km away
26. 1.6259 km W of Adak, AlaskaMon, Jul 25, 7:30 PM GMT+12 · 1527 days ago · 12 km deep · 30 km away
27. 1.7251 km W of Adak, AlaskaTue, Jul 26, 6:17 AM GMT+12 · 1527 days ago · 103 km deep · 19 km away
28. 2.7231 km WSW of Adak, AlaskaMon, Jul 25, 2:23 PM HADT · 1527 days ago · 35 km deep · 84 km away
29. 1.7Rat Islands, Aleutian Islands, AlaskaMon, Jul 25, 8:17 PM HADT · 1526 days ago · 13 km deep · 8 km away
30. 4.0223 km WSW of Adak, AlaskaTue, Jul 26, 5:00 AM HADT · 1526 days ago · 35 km deep · 74 km away
31. 1.7235 km W of Adak, AlaskaFri, Jul 29, 4:24 AM HADT · 1523 days ago · 7 km deep · 1 km away
32. 2.1234 km W of Adak, AlaskaFri, Jul 29, 4:25 AM HADT · 1523 days ago · 13 km deep · 3 km away
33. 3.3262 km W of Adak, AlaskaSat, Jul 30, 2:22 AM GMT+12 · 1523 days ago · 88 km deep · 26 km away
34. 1.9253 km W of Adak, AlaskaSat, Jul 30, 7:10 AM GMT+12 · 1523 days ago · 87 km deep · 22 km away
35. 2.5206 km WSW of Adak, AlaskaSat, Jul 30, 12:32 AM HADT · 1522 days ago · 35 km deep · 57 km away
36. 2.0Rat Islands, Aleutian Islands, AlaskaSat, Jul 30, 9:43 PM GMT+12 · 1522 days ago · 125 km deep · 91 km away
37. 1.5Andreanof Islands, Aleutian Islands, AlaskaSat, Jul 30, 1:29 AM HADT · 1522 days ago · 15 km deep · 33 km away
38. 1.8275 km WSW of Adak, AlaskaSun, Jul 31, 10:45 AM GMT+12 · 1522 days ago · 19 km deep · 66 km away
39. 1.7237 km W of Adak, AlaskaSun, Jul 31, 4:28 AM HADT · 1521 days ago · 14 km deep · 2 km away
40. 1.9235 km W of Adak, AlaskaSun, Jul 31, 5:41 AM HADT · 1521 days ago · 8 km deep · 1 km away
41. 2.6250 km WSW of Adak, AlaskaMon, Aug 1, 4:13 AM GMT+12 · 1521 days ago · 75 km deep · 33 km away
42. 2.8197 km WSW of Adak, AlaskaSun, Jul 31, 4:17 PM HADT · 1521 days ago · 30 km deep · 81 km away
43. 3.4280 km W of Adak, AlaskaMon, Aug 1, 2:30 PM GMT+12 · 1520 days ago · 63 km deep · 50 km away
44. 1.6159 km W of Adak, AlaskaMon, Aug 1, 10:35 AM HADT · 1520 days ago · 14 km deep · 78 km away
45. 2.7268 km W of Adak, AlaskaTue, Aug 2, 5:00 PM GMT+12 · 1519 days ago · 73 km deep · 40 km away
46. 1.8247 km WSW of Adak, AlaskaMon, Aug 1, 11:25 PM GMT-12 · 1519 days ago · 29 km deep · 78 km away
47. 3.5229 km WSW of Adak, AlaskaTue, Aug 2, 2:51 AM HADT · 1519 days ago · 10 km deep · 59 km away
48. 2.5208 km WSW of Adak, AlaskaTue, Aug 2, 5:12 AM HADT · 1519 days ago · 64 km deep · 48 km away
49. 2.8200 km W of Adak, AlaskaTue, Aug 2, 9:50 AM HADT · 1519 days ago · 172 km deep · 49 km away
50. 2.5220 km WSW of Adak, AlaskaTue, Aug 2, 2:35 PM HADT · 1519 days ago · 35 km deep · 58 km away
51. 1.9204 km WSW of Adak, AlaskaFri, Aug 5, 4:31 AM HADT · 1516 days ago · 148 km deep · 43 km away
52. 1.5Rat Islands, Aleutian Islands, AlaskaSat, Aug 6, 4:49 AM GMT+12 · 1516 days ago · 39 km deep · 83 km away
53. 2.1194 km W of Adak, AlaskaFri, Aug 5, 12:28 PM HADT · 1516 days ago · 115 km deep · 46 km away
54. 1.8234 km W of Adak, AlaskaFri, Aug 5, 2:02 PM HADT · 1516 days ago · 13 km deep · 6 km away
55. 2.7237 km W of Adak, AlaskaFri, Aug 5, 9:21 PM HADT · 1515 days ago · 17 km deep · 6 km away
56. 3.0Rat Islands, Aleutian Islands, AlaskaSat, Aug 6, 11:02 PM GMT+12 · 1515 days ago · 63 km deep · 73 km away
57. 1.9164 km WSW of Adak, AlaskaSat, Aug 6, 3:18 AM HADT · 1515 days ago · 50 km deep · 95 km away
58. 1.6225 km W of Adak, AlaskaSat, Aug 6, 10:10 AM HADT · 1515 days ago · 93 km deep · 20 km away
59. 2.5266 km WSW of Adak, AlaskaMon, Aug 8, 7:40 AM GMT+12 · 1514 days ago · 35 km deep · 50 km away
60. 4.3249 km W of Adak, AlaskaMon, Aug 8, 3:57 PM GMT+12 · 1513 days ago · 135 km deep · 32 km away

The first 60 of 148.

Before

1. 2.7231 km W of Adak, AlaskaWed, Jul 20, 5:50 AM HADT · 1532 days ago · 10 km deep · 5 km away
2. 3.0Rat Islands, Aleutian Islands, AlaskaWed, Jul 20, 12:27 AM HADT · 1532 days ago · 16 km deep · 8 km away
3. 2.5207 km W of Adak, AlaskaWed, Jul 20, 12:16 AM HADT · 1532 days ago · 97 km deep · 30 km away
4. 1.8233 km W of Adak, AlaskaTue, Jul 19, 11:43 PM HADT · 1532 days ago · 13 km deep · 5 km away
5. 1.9233 km W of Adak, AlaskaTue, Jul 19, 11:25 PM HADT · 1532 days ago · 13 km deep · 4 km away
6. 2.6232 km W of Adak, AlaskaTue, Jul 19, 10:41 PM HADT · 1532 days ago · 10 km deep · 4 km away
7. 2.6233 km W of Adak, AlaskaTue, Jul 19, 9:58 PM HADT · 1532 days ago · 10 km deep · 4 km away
8. 1.6232 km W of Adak, AlaskaTue, Jul 19, 7:51 PM HADT · 1532 days ago · 13 km deep · 11 km away
9. 1.8233 km W of Adak, AlaskaTue, Jul 19, 6:49 PM HADT · 1532 days ago · 11 km deep · 2 km away
10. 1.8234 km W of Adak, AlaskaTue, Jul 19, 5:57 PM HADT · 1532 days ago · 10 km deep · 1 km away
11. 1.6234 km W of Adak, AlaskaTue, Jul 19, 5:57 PM HADT · 1532 days ago · 13 km deep · 7 km away
12. 1.7235 km W of Adak, AlaskaTue, Jul 19, 5:56 PM HADT · 1532 days ago · 13 km deep · 2 km away
13. 2.6233 km W of Adak, AlaskaTue, Jul 19, 5:55 PM HADT · 1532 days ago · 10 km deep · 3 km away
14. 2.6Rat Islands, Aleutian Islands, AlaskaTue, Jul 19, 5:45 PM HADT · 1532 days ago · 16 km deep · 3 km away
15. 2.6231 km W of Adak, AlaskaTue, Jul 19, 5:41 PM HADT · 1532 days ago · 17 km deep · 4 km away
16. 1.6236 km W of Adak, AlaskaTue, Jul 19, 5:33 PM HADT · 1532 days ago · 8 km deep · 0 km away
17. 1.7235 km W of Adak, AlaskaTue, Jul 19, 5:20 PM HADT · 1532 days ago · 8 km deep · 0 km away
18. 1.7236 km W of Adak, AlaskaTue, Jul 19, 5:17 PM HADT · 1532 days ago · 9 km deep · 1 km away
19. 4.4235 km W of Adak, AlaskaTue, Jul 19, 5:11 PM HADT · 1532 days ago · 18 km deep · 1 km away
20. 2.0263 km W of Adak, AlaskaTue, Jul 19, 6:17 PM GMT+12 · 1533 days ago · 80 km deep · 28 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91066638. Read Tue, Sep 29, 2026, 1:37 PM UTC.