M4.3 earthquake 143 km SSW of Akhiok, Alaska

Magnitude

4.3 (mb), light

Local time

Wed, Jul 28, 2021, 10:42 PM AKDT

UTC

2021-07-29 06:42:41 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

55.842° N, 155.383° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.3 km horizontally, 2.0 km in depth

Magnitude uncertainty

±0.24

Depth from

Operator assigned

Station coverage gap

142°

Stations used

64

• Womens Bay, AlaskaPopulation 719. Forecast263 kmSW

After

1. 4.7197 km SSW of Akhiok, AlaskaWed, Jul 28, 10:44 PM AKDT · 1885 days ago · 10 km deep · 59 km away
2. 3.7172 km SE of Chignik, AlaskaWed, Jul 28, 10:50 PM AKDT · 1885 days ago · 11 km deep · 92 km away
3. 4.2142 km SE of Chignik, AlaskaWed, Jul 28, 10:53 PM AKDT · 1885 days ago · 42 km deep · 95 km away
4. 3.8156 km SE of Chignik, AlaskaWed, Jul 28, 10:58 PM AKDT · 1885 days ago · 27 km deep · 72 km away
5. 3.1131 km ESE of Chignik, AlaskaWed, Jul 28, 11:01 PM AKDT · 1885 days ago · 21 km deep · 75 km away
6. 3.5167 km SE of Chignik, AlaskaWed, Jul 28, 11:15 PM AKDT · 1885 days ago · 14 km deep · 84 km away
7. 3.9141 km SE of Chignik, AlaskaWed, Jul 28, 11:21 PM AKDT · 1885 days ago · 25 km deep · 87 km away
8. 3.5180 km SE of Chignik, AlaskaWed, Jul 28, 11:29 PM AKDT · 1885 days ago · 41 km deep · 85 km away
9. 3.9160 km SE of Chignik, AlaskaWed, Jul 28, 11:33 PM AKDT · 1885 days ago · 20 km deep · 77 km away
10. 3.7137 km SE of Chignik, AlaskaWed, Jul 28, 11:54 PM AKDT · 1885 days ago · 25 km deep · 78 km away
11. 4.3172 km ESE of Chignik, AlaskaThu, Jul 29, 12:25 AM AKDT · 1885 days ago · 23 km deep · 60 km away
12. 3.8157 km SE of Chignik, AlaskaThu, Jul 29, 12:32 AM AKDT · 1885 days ago · 6 km deep · 76 km away
13. 3.1215 km SE of Chignik, AlaskaThu, Jul 29, 1:13 AM AKDT · 1885 days ago · 20 km deep · 86 km away
14. 3.0173 km ESE of Chignik, AlaskaThu, Jul 29, 1:26 AM AKDT · 1885 days ago · 39 km deep · 50 km away
15. 3.3113 km SE of Chignik, AlaskaThu, Jul 29, 1:38 AM AKDT · 1885 days ago · 20 km deep · 97 km away
16. 3.3184 km SSW of Akhiok, AlaskaThu, Jul 29, 1:44 AM AKDT · 1885 days ago · 35 km deep · 41 km away
17. 4.3164 km SE of Chignik, AlaskaThu, Jul 29, 1:52 AM AKDT · 1885 days ago · 17 km deep · 76 km away
18. 4.8195 km SSW of Akhiok, AlaskaThu, Jul 29, 1:55 AM AKDT · 1885 days ago · 10 km deep · 54 km away
19. 4.1222 km SE of Chignik, AlaskaThu, Jul 29, 1:58 AM AKDT · 1885 days ago · 7 km deep · 85 km away
20. 2.9187 km SSW of Akhiok, AlaskaThu, Jul 29, 2:42 AM AKDT · 1885 days ago · 33 km deep · 44 km away
21. 3.2151 km SE of Chignik, AlaskaThu, Jul 29, 3:16 AM AKDT · 1885 days ago · 25 km deep · 88 km away
22. 2.6168 km ESE of Chignik, AlaskaThu, Jul 29, 3:32 AM AKDT · 1885 days ago · 6 km deep · 45 km away
23. 2.6137 km ESE of Chignik, AlaskaThu, Jul 29, 3:40 AM AKDT · 1885 days ago · 25 km deep · 71 km away
24. 2.7164 km ESE of Chignik, AlaskaThu, Jul 29, 3:58 AM AKDT · 1885 days ago · 20 km deep · 59 km away
25. 2.6146 km ESE of Chignik, AlaskaThu, Jul 29, 4:10 AM AKDT · 1885 days ago · 13 km deep · 66 km away
26. 2.3110 km ESE of Chignik, AlaskaThu, Jul 29, 4:14 AM AKDT · 1885 days ago · 5 km deep · 94 km away
27. 2.9214 km SE of Chignik, AlaskaThu, Jul 29, 4:16 AM AKDT · 1885 days ago · 3 km deep · 83 km away
28. 3.5126 km SE of Chignik, AlaskaThu, Jul 29, 4:23 AM AKDT · 1885 days ago · 11 km deep · 95 km away
29. 3.6137 km SE of Chignik, AlaskaThu, Jul 29, 4:32 AM AKDT · 1885 days ago · 25 km deep · 79 km away
30. 2.9169 km SW of Akhiok, AlaskaThu, Jul 29, 5:12 AM AKDT · 1885 days ago · 24 km deep · 30 km away
31. 4.5164 km ESE of Chignik, AlaskaThu, Jul 29, 5:17 AM AKDT · 1885 days ago · 28 km deep · 40 km away
32. 3.7182 km SSW of Akhiok, AlaskaThu, Jul 29, 5:30 AM AKDT · 1885 days ago · 7 km deep · 38 km away
33. 2.6134 km SE of Chignik, AlaskaThu, Jul 29, 5:35 AM AKDT · 1885 days ago · 25 km deep · 80 km away
34. 2.5128 km SE of Chignik, AlaskaThu, Jul 29, 6:05 AM AKDT · 1884 days ago · 9 km deep · 93 km away
35. 3.0204 km SSW of Akhiok, AlaskaThu, Jul 29, 6:15 AM AKDT · 1884 days ago · 37 km deep · 62 km away
36. 2.3104 km ESE of Chignik, AlaskaThu, Jul 29, 6:28 AM AKDT · 1884 days ago · 12 km deep · 92 km away
37. 2.8141 km SE of Chignik, AlaskaThu, Jul 29, 6:42 AM AKDT · 1884 days ago · 13 km deep · 92 km away
38. 2.8159 km SE of Chignik, AlaskaThu, Jul 29, 6:56 AM AKDT · 1884 days ago · 34 km deep · 71 km away
39. 3.6222 km SSW of Akhiok, AlaskaThu, Jul 29, 6:57 AM AKDT · 1884 days ago · 20 km deep · 83 km away
40. 2.9129 km SE of Chignik, AlaskaThu, Jul 29, 7:06 AM AKDT · 1884 days ago · 4 km deep · 89 km away
41. 3.1164 km SE of Chignik, AlaskaThu, Jul 29, 7:53 AM AKDT · 1884 days ago · 27 km deep · 70 km away
42. 4.5185 km SSW of Akhiok, AlaskaThu, Jul 29, 8:08 AM AKDT · 1884 days ago · 37 km deep · 42 km away
43. 3.0163 km SSW of Akhiok, AlaskaThu, Jul 29, 8:21 AM AKDT · 1884 days ago · 40 km deep · 20 km away
44. 3.0152 km SE of Chignik, AlaskaThu, Jul 29, 8:28 AM AKDT · 1884 days ago · 2 km deep · 98 km away
45. 3.0159 km ESE of Chignik, AlaskaThu, Jul 29, 8:29 AM AKDT · 1884 days ago · 9 km deep · 45 km away
46. 3.5196 km SE of Chignik, AlaskaThu, Jul 29, 9:07 AM AKDT · 1884 days ago · 35 km deep · 71 km away
47. 4.2165 km SSW of Akhiok, AlaskaThu, Jul 29, 9:27 AM AKDT · 1884 days ago · 15 km deep · 34 km away
48. 4.0139 km SE of Chignik, AlaskaThu, Jul 29, 9:27 AM AKDT · 1884 days ago · 24 km deep · 90 km away
49. 2.7146 km SE of Chignik, AlaskaThu, Jul 29, 9:35 AM AKDT · 1884 days ago · 19 km deep · 95 km away
50. 2.8138 km SE of Chignik, AlaskaThu, Jul 29, 10:22 AM AKDT · 1884 days ago · 24 km deep · 86 km away
51. 2.7132 km SE of Chignik, AlaskaThu, Jul 29, 10:52 AM AKDT · 1884 days ago · 26 km deep · 94 km away
52. 4.2143 km SE of Chignik, AlaskaThu, Jul 29, 11:11 AM AKDT · 1884 days ago · 40 km deep · 96 km away
53. 2.9141 km SE of Chignik, AlaskaThu, Jul 29, 11:14 AM AKDT · 1884 days ago · 16 km deep · 96 km away
54. 2.5160 km SE of Chignik, AlaskaThu, Jul 29, 11:34 AM AKDT · 1884 days ago · 21 km deep · 92 km away
55. 3.3south of AlaskaThu, Jul 29, 11:52 AM AKDT · 1884 days ago · 33 km deep · 43 km away
56. 3.5165 km SE of Chignik, AlaskaThu, Jul 29, 12:21 PM AKDT · 1884 days ago · 6 km deep · 77 km away
57. 3.6192 km SSW of Akhiok, AlaskaThu, Jul 29, 1:17 PM AKDT · 1884 days ago · 40 km deep · 48 km away
58. 3.0186 km SSW of Akhiok, AlaskaThu, Jul 29, 2:01 PM AKDT · 1884 days ago · 19 km deep · 43 km away
59. 3.9153 km SE of Chignik, AlaskaThu, Jul 29, 2:55 PM AKDT · 1884 days ago · 13 km deep · 84 km away
60. 3.1169 km ESE of Chignik, AlaskaThu, Jul 29, 4:21 PM AKDT · 1884 days ago · 35 km deep · 49 km away

The first 60 of at least 199.

Before

1. 4.1113 km ESE of Chignik, AlaskaWed, Jul 28, 10:37 PM AKDT · 1885 days ago · 46 km deep · 94 km away
2. 2.2122 km E of Chignik, AlaskaSun, Jul 25, 12:32 PM AKDT · 1888 days ago · 25 km deep · 84 km away
3. 1.9118 km ESE of Chignik, AlaskaSat, Jul 24, 3:12 PM AKDT · 1889 days ago · 44 km deep · 79 km away
4. 2.2114 km E of Chignik, AlaskaSun, Jul 18, 7:42 AM AKDT · 1895 days ago · 39 km deep · 84 km away
5. 1.7112 km SSW of Akhiok, AlaskaTue, Jul 13, 5:29 AM AKDT · 1901 days ago · 17 km deep · 41 km away
6. 2.3124 km WSW of Akhiok, AlaskaThu, Jul 1, 7:05 PM AKDT · 1912 days ago · 81 km deep · 98 km away
7. 2.5110 km E of Chignik, AlaskaWed, Jun 30, 8:52 AM AKDT · 1913 days ago · 54 km deep · 90 km away
8. 4.360 km S of Akhiok, AlaskaTue, Jun 29, 12:45 AM AKDT · 1915 days ago · 20 km deep · 93 km away · tsunami flag

From the USGS Earthquake Hazards Program and its partner networks, event us6000f2fh. Read Sat, Sep 26, 2026, 1:07 AM UTC.