M4.7 earthquake 197 km SSW of Akhiok, Alaska

Magnitude

4.7 (mb), light

Local time

Wed, Jul 28, 2021, 10:44 PM AKDT

UTC

2021-07-29 06:44:01 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

55.314° N, 155.400° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 6.6 km horizontally, 1.8 km in depth

Magnitude uncertainty

±0.32

Depth from

Operator assigned

Station coverage gap

162°

Stations used

67

After

1. 3.7172 km SE of Chignik, AlaskaWed, Jul 28, 10:50 PM AKDT · 1883 days ago · 11 km deep · 63 km away
2. 4.2142 km SE of Chignik, AlaskaWed, Jul 28, 10:53 PM AKDT · 1883 days ago · 42 km deep · 84 km away
3. 3.8156 km SE of Chignik, AlaskaWed, Jul 28, 10:58 PM AKDT · 1883 days ago · 27 km deep · 63 km away
4. 3.1131 km ESE of Chignik, AlaskaWed, Jul 28, 11:01 PM AKDT · 1883 days ago · 21 km deep · 86 km away
5. 3.3154 km SE of Chignik, AlaskaWed, Jul 28, 11:13 PM AKDT · 1883 days ago · 4 km deep · 84 km away
6. 3.5167 km SE of Chignik, AlaskaWed, Jul 28, 11:15 PM AKDT · 1883 days ago · 14 km deep · 61 km away
7. 3.9141 km SE of Chignik, AlaskaWed, Jul 28, 11:21 PM AKDT · 1883 days ago · 25 km deep · 81 km away
8. 3.5180 km SE of Chignik, AlaskaWed, Jul 28, 11:29 PM AKDT · 1883 days ago · 41 km deep · 52 km away
9. 4.3164 km SE of Chignik, AlaskaWed, Jul 28, 11:31 PM AKDT · 1883 days ago · 20 km deep · 85 km away
10. 3.9160 km SE of Chignik, AlaskaWed, Jul 28, 11:33 PM AKDT · 1883 days ago · 20 km deep · 62 km away
11. 3.1165 km SE of Chignik, AlaskaWed, Jul 28, 11:38 PM AKDT · 1883 days ago · 7 km deep · 88 km away
12. 3.7137 km SE of Chignik, AlaskaWed, Jul 28, 11:54 PM AKDT · 1883 days ago · 25 km deep · 81 km away
13. 3.0147 km SE of Chignik, AlaskaThu, Jul 29, 12:06 AM AKDT · 1883 days ago · 24 km deep · 91 km away
14. 3.5199 km SE of Chignik, AlaskaThu, Jul 29, 12:13 AM AKDT · 1883 days ago · 10 km deep · 93 km away
15. 4.2145 km SE of Chignik, AlaskaThu, Jul 29, 12:15 AM AKDT · 1883 days ago · 18 km deep · 92 km away
16. 4.2149 km SE of Chignik, AlaskaThu, Jul 29, 12:15 AM AKDT · 1883 days ago · 28 km deep · 89 km away
17. 4.3172 km ESE of Chignik, AlaskaThu, Jul 29, 12:25 AM AKDT · 1883 days ago · 23 km deep · 45 km away
18. 3.8157 km SE of Chignik, AlaskaThu, Jul 29, 12:32 AM AKDT · 1883 days ago · 6 km deep · 64 km away
19. 3.3166 km SE of Chignik, AlaskaThu, Jul 29, 12:34 AM AKDT · 1883 days ago · 23 km deep · 81 km away
20. 3.1215 km SE of Chignik, AlaskaThu, Jul 29, 1:13 AM AKDT · 1883 days ago · 20 km deep · 33 km away
21. 3.5161 km SE of Chignik, AlaskaThu, Jul 29, 1:22 AM AKDT · 1883 days ago · 1 km deep · 97 km away
22. 3.0173 km ESE of Chignik, AlaskaThu, Jul 29, 1:26 AM AKDT · 1883 days ago · 39 km deep · 44 km away
23. 3.3184 km SSW of Akhiok, AlaskaThu, Jul 29, 1:44 AM AKDT · 1883 days ago · 35 km deep · 33 km away
24. 4.3164 km SE of Chignik, AlaskaThu, Jul 29, 1:52 AM AKDT · 1883 days ago · 17 km deep · 58 km away
25. 4.6148 km SE of Chignik, AlaskaThu, Jul 29, 1:53 AM AKDT · 1883 days ago · 41 km deep · 96 km away
26. 4.8195 km SSW of Akhiok, AlaskaThu, Jul 29, 1:55 AM AKDT · 1883 days ago · 10 km deep · 11 km away
27. 4.1222 km SE of Chignik, AlaskaThu, Jul 29, 1:58 AM AKDT · 1883 days ago · 7 km deep · 28 km away
28. 3.2135 km SE of Chignik, AlaskaThu, Jul 29, 2:22 AM AKDT · 1883 days ago · 15 km deep · 92 km away
29. 3.4166 km SE of Chignik, AlaskaThu, Jul 29, 2:37 AM AKDT · 1883 days ago · 17 km deep · 85 km away
30. 2.9187 km SSW of Akhiok, AlaskaThu, Jul 29, 2:42 AM AKDT · 1883 days ago · 33 km deep · 31 km away
31. 3.2151 km SE of Chignik, AlaskaThu, Jul 29, 3:16 AM AKDT · 1883 days ago · 25 km deep · 74 km away
32. 2.6168 km ESE of Chignik, AlaskaThu, Jul 29, 3:32 AM AKDT · 1883 days ago · 6 km deep · 50 km away
33. 2.6137 km ESE of Chignik, AlaskaThu, Jul 29, 3:40 AM AKDT · 1883 days ago · 25 km deep · 80 km away
34. 3.2137 km SE of Chignik, AlaskaThu, Jul 29, 3:56 AM AKDT · 1883 days ago · 26 km deep · 95 km away
35. 2.7164 km ESE of Chignik, AlaskaThu, Jul 29, 3:58 AM AKDT · 1883 days ago · 20 km deep · 53 km away
36. 2.6146 km ESE of Chignik, AlaskaThu, Jul 29, 4:10 AM AKDT · 1883 days ago · 13 km deep · 71 km away
37. 2.9214 km SE of Chignik, AlaskaThu, Jul 29, 4:16 AM AKDT · 1883 days ago · 3 km deep · 29 km away
38. 3.5126 km SE of Chignik, AlaskaThu, Jul 29, 4:23 AM AKDT · 1883 days ago · 11 km deep · 95 km away
39. 3.6137 km SE of Chignik, AlaskaThu, Jul 29, 4:32 AM AKDT · 1883 days ago · 25 km deep · 81 km away
40. 2.9169 km SW of Akhiok, AlaskaThu, Jul 29, 5:12 AM AKDT · 1883 days ago · 24 km deep · 53 km away
41. 4.5164 km ESE of Chignik, AlaskaThu, Jul 29, 5:17 AM AKDT · 1883 days ago · 28 km deep · 58 km away
42. 3.7182 km SSW of Akhiok, AlaskaThu, Jul 29, 5:30 AM AKDT · 1883 days ago · 7 km deep · 31 km away
43. 2.6134 km SE of Chignik, AlaskaThu, Jul 29, 5:35 AM AKDT · 1883 days ago · 25 km deep · 84 km away
44. 3.3186 km SE of Chignik, AlaskaThu, Jul 29, 6:02 AM AKDT · 1883 days ago · 20 km deep · 76 km away
45. 2.5128 km SE of Chignik, AlaskaThu, Jul 29, 6:05 AM AKDT · 1883 days ago · 9 km deep · 93 km away
46. 3.0204 km SSW of Akhiok, AlaskaThu, Jul 29, 6:15 AM AKDT · 1883 days ago · 37 km deep · 15 km away
47. 3.0186 km SE of Chignik, AlaskaThu, Jul 29, 6:20 AM AKDT · 1883 days ago · 41 km deep · 70 km away
48. 2.8141 km SE of Chignik, AlaskaThu, Jul 29, 6:42 AM AKDT · 1883 days ago · 13 km deep · 83 km away
49. 2.8159 km SE of Chignik, AlaskaThu, Jul 29, 6:56 AM AKDT · 1883 days ago · 34 km deep · 60 km away
50. 3.6222 km SSW of Akhiok, AlaskaThu, Jul 29, 6:57 AM AKDT · 1883 days ago · 20 km deep · 25 km away
51. 2.9129 km SE of Chignik, AlaskaThu, Jul 29, 7:06 AM AKDT · 1883 days ago · 4 km deep · 90 km away
52. 3.6150 km SE of Chignik, AlaskaThu, Jul 29, 7:13 AM AKDT · 1883 days ago · 23 km deep · 92 km away
53. 2.8199 km SE of Chignik, AlaskaThu, Jul 29, 7:20 AM AKDT · 1883 days ago · 13 km deep · 70 km away
54. 3.1164 km SE of Chignik, AlaskaThu, Jul 29, 7:53 AM AKDT · 1883 days ago · 27 km deep · 56 km away
55. 4.5185 km SSW of Akhiok, AlaskaThu, Jul 29, 8:08 AM AKDT · 1883 days ago · 37 km deep · 33 km away
56. 5.3155 km SE of Chignik, AlaskaThu, Jul 29, 8:09 AM AKDT · 1883 days ago · 36 km deep · 99 km away · tsunami flag
57. 3.0163 km SSW of Akhiok, AlaskaThu, Jul 29, 8:21 AM AKDT · 1883 days ago · 40 km deep · 41 km away
58. 2.6151 km SE of Chignik, AlaskaThu, Jul 29, 8:26 AM AKDT · 1883 days ago · 14 km deep · 83 km away
59. 3.0152 km SE of Chignik, AlaskaThu, Jul 29, 8:28 AM AKDT · 1883 days ago · 2 km deep · 80 km away
60. 3.0159 km ESE of Chignik, AlaskaThu, Jul 29, 8:29 AM AKDT · 1883 days ago · 9 km deep · 61 km away

The first 60 of at least 200.

Before

1. 4.3143 km SSW of Akhiok, AlaskaWed, Jul 28, 10:42 PM AKDT · 1883 days ago · 10 km deep · 59 km away
2. 4.3147 km SE of Chignik, AlaskaWed, Jul 28, 10:38 PM AKDT · 1883 days ago · 38 km deep · 97 km away
3. 5.4154 km SE of Chignik, AlaskaWed, Jul 28, 10:32 PM AKDT · 1883 days ago · 3 km deep · 87 km away · felt by 5
4. 4.2159 km SE of Chignik, AlaskaWed, Jul 28, 10:27 PM AKDT · 1883 days ago · 20 km deep · 82 km away
5. 1.7112 km SSW of Akhiok, AlaskaTue, Jul 13, 5:29 AM AKDT · 1899 days ago · 17 km deep · 85 km away

From the USGS Earthquake Hazards Program and its partner networks, event us6000f2fi. Read Thu, Sep 24, 2026, 3:13 PM UTC.