M1.9 earthquake Alaska Peninsula

Magnitude

1.9 (ml), micro

Local time

Fri, Aug 20, 2021, 8:37 PM AKDT

UTC

2021-08-21 04:37:01 UTC

Depth

87.4 km (54.3 mi), intermediate-depth

Epicenter

57.565° N, 155.449° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

42

• Naknek, AlaskaPopulation 544. Forecast159 kmSE
• Anchorage, AlaskaPopulation 289,600. Forecast513 kmSW

After

1. 1.677 km SE of Ugashik, AlaskaSat, Aug 21, 10:35 PM AKDT · 1858 days ago · 78 km deep · 92 km away
2. 1.773 km ESE of Ugashik, AlaskaSun, Aug 22, 12:21 AM AKDT · 1858 days ago · 80 km deep · 70 km away
3. 2.763 km N of Karluk, AlaskaSun, Aug 22, 4:43 AM AKDT · 1858 days ago · 72 km deep · 83 km away
4. 1.688 km ESE of Egegik, AlaskaSun, Aug 22, 4:13 PM AKDT · 1858 days ago · 8 km deep · 48 km away
5. 2.2111 km SE of Ugashik, AlaskaSun, Aug 22, 7:04 PM AKDT · 1857 days ago · 67 km deep · 97 km away
6. 1.776 km WNW of Karluk, AlaskaSun, Aug 22, 11:41 PM AKDT · 1857 days ago · 96 km deep · 26 km away
7. 1.792 km ESE of Ugashik, AlaskaMon, Aug 23, 9:58 PM AKDT · 1856 days ago · 20 km deep · 68 km away
8. 1.9Kodiak Island region, AlaskaMon, Aug 23, 11:30 PM AKDT · 1856 days ago · 56 km deep · 34 km away
9. 1.951 km SE of Ugashik, AlaskaTue, Aug 24, 1:24 AM AKDT · 1856 days ago · 9 km deep · 94 km away
10. 2.0Kodiak Island region, AlaskaTue, Aug 24, 6:30 AM AKDT · 1856 days ago · 61 km deep · 53 km away
11. 1.686 km NW of Karluk, AlaskaTue, Aug 24, 9:02 PM AKDT · 1855 days ago · 2 km deep · 67 km away
12. 2.396 km ESE of Ugashik, AlaskaWed, Aug 25, 4:26 AM AKDT · 1855 days ago · 9 km deep · 60 km away
13. 1.986 km ESE of Ugashik, AlaskaWed, Aug 25, 4:42 AM AKDT · 1855 days ago · 2 km deep · 68 km away
14. 1.588 km ESE of Ugashik, AlaskaWed, Aug 25, 7:37 AM AKDT · 1855 days ago · 1 km deep · 59 km away
15. 2.484 km NNW of Karluk, AlaskaWed, Aug 25, 10:44 AM AKDT · 1855 days ago · 1 km deep · 77 km away
16. 1.6111 km W of Akhiok, AlaskaWed, Aug 25, 5:32 PM AKDT · 1854 days ago · 12 km deep · 90 km away
17. 2.421 km SW of Larsen Bay, AlaskaThu, Aug 26, 2:19 AM AKDT · 1854 days ago · 40 km deep · 76 km away
18. 2.893 km ESE of Ugashik, AlaskaThu, Aug 26, 2:41 AM AKDT · 1854 days ago · 4 km deep · 62 km away
19. 2.137 km WSW of Karluk, AlaskaSat, Aug 28, 11:06 PM AKDT · 1851 days ago · 72 km deep · 32 km away
20. 1.57 km WNW of Karluk, AlaskaSun, Aug 29, 4:04 AM AKDT · 1851 days ago · 51 km deep · 52 km away
21. 1.873 km W of Karluk, AlaskaMon, Aug 30, 4:51 AM AKDT · 1850 days ago · 80 km deep · 17 km away
22. 1.957 km SW of Karluk, AlaskaTue, Aug 31, 11:52 AM AKDT · 1849 days ago · 46 km deep · 40 km away
23. 1.975 km SE of Ugashik, AlaskaWed, Sep 1, 12:50 AM AKDT · 1848 days ago · 3 km deep · 76 km away
24. 1.880 km W of Karluk, AlaskaWed, Sep 1, 9:32 AM AKDT · 1848 days ago · 6 km deep · 22 km away
25. 1.643 km NW of Karluk, AlaskaWed, Sep 1, 7:22 PM AKDT · 1847 days ago · 74 km deep · 45 km away
26. 3.562 km NW of Karluk, AlaskaWed, Sep 1, 7:40 PM AKDT · 1847 days ago · 83 km deep · 41 km away
27. 1.75 km N of Karluk, AlaskaWed, Sep 1, 8:20 PM AKDT · 1847 days ago · 47 km deep · 60 km away
28. 1.798 km ESE of Ugashik, AlaskaWed, Sep 1, 11:33 PM AKDT · 1847 days ago · 67 km deep · 57 km away
29. 1.5Alaska PeninsulaThu, Sep 2, 9:18 AM AKDT · 1847 days ago · 5 km deep · 20 km away
30. 1.574 km WSW of Karluk, AlaskaThu, Sep 2, 12:17 PM AKDT · 1847 days ago · 71 km deep · 35 km away
31. 1.757 km ESE of Egegik, AlaskaFri, Sep 3, 1:31 AM AKDT · 1846 days ago · 157 km deep · 78 km away
32. 2.080 km SE of Ugashik, AlaskaSat, Sep 4, 9:12 AM AKDT · 1845 days ago · 2 km deep · 88 km away
33. 1.585 km SE of Ugashik, AlaskaSat, Sep 4, 9:17 AM AKDT · 1845 days ago · 14 km deep · 88 km away
34. 1.776 km W of Karluk, AlaskaSat, Sep 4, 4:35 PM AKDT · 1845 days ago · 35 km deep · 16 km away
35. 1.690 km WSW of Akhiok, AlaskaSat, Sep 4, 5:18 PM AKDT · 1845 days ago · 7 km deep · 88 km away
36. 1.732 km S of Karluk, AlaskaSat, Sep 4, 10:01 PM AKDT · 1844 days ago · 43 km deep · 62 km away
37. 1.674 km NW of Karluk, AlaskaSun, Sep 5, 5:09 AM AKDT · 1844 days ago · 99 km deep · 61 km away
38. 1.963 km NW of Karluk, AlaskaSun, Sep 5, 9:40 AM AKDT · 1844 days ago · 94 km deep · 40 km away
39. 1.661 km WNW of Karluk, AlaskaSun, Sep 5, 12:20 PM AKDT · 1844 days ago · 10 km deep · 27 km away
40. 1.771 km WSW of Karluk, AlaskaMon, Sep 6, 3:50 AM AKDT · 1843 days ago · 61 km deep · 32 km away
41. 1.575 km WNW of Karluk, AlaskaMon, Sep 6, 10:08 AM AKDT · 1843 days ago · 95 km deep · 28 km away
42. 1.953 km SW of Karluk, AlaskaMon, Sep 6, 4:26 PM AKDT · 1843 days ago · 61 km deep · 51 km away
43. 2.4102 km W of Akhiok, AlaskaTue, Sep 7, 4:21 PM AKDT · 1842 days ago · 12 km deep · 81 km away
44. 2.4101 km W of Akhiok, AlaskaTue, Sep 7, 6:26 PM AKDT · 1841 days ago · 14 km deep · 81 km away
45. 3.269 km ESE of Egegik, AlaskaThu, Sep 9, 2:19 AM AKDT · 1840 days ago · 137 km deep · 68 km away
46. 2.0Alaska PeninsulaThu, Sep 9, 3:33 AM AKDT · 1840 days ago · 7 km deep · 19 km away
47. 2.0Alaska PeninsulaFri, Sep 10, 2:25 PM AKDT · 1839 days ago · 130 km deep · 60 km away
48. 2.260 km SE of King Salmon, AlaskaSat, Sep 11, 7:36 PM AKDT · 1837 days ago · 144 km deep · 85 km away
49. 1.7105 km W of Akhiok, AlaskaSun, Sep 12, 8:51 AM AKDT · 1837 days ago · 29 km deep · 78 km away
50. 2.259 km SE of King Salmon, AlaskaSun, Sep 12, 7:20 PM AKDT · 1836 days ago · 153 km deep · 87 km away
51. 1.718 km NW of Karluk, AlaskaMon, Sep 13, 1:10 AM AKDT · 1836 days ago · 53 km deep · 47 km away
52. 2.779 km NW of Karluk, AlaskaMon, Sep 13, 9:58 AM AKDT · 1836 days ago · 1 km deep · 46 km away
53. 1.837 km NNE of Karluk, AlaskaMon, Sep 13, 7:12 PM AKDT · 1835 days ago · 51 km deep · 84 km away
54. 1.59 km NNE of Larsen Bay, AlaskaTue, Sep 14, 12:20 PM AKDT · 1835 days ago · 30 km deep · 91 km away
55. 1.646 km SE of Ugashik, AlaskaTue, Sep 14, 7:17 PM AKDT · 1834 days ago · 1 km deep · 84 km away
56. 1.671 km SE of Ugashik, AlaskaTue, Sep 14, 7:18 PM AKDT · 1834 days ago · 1 km deep · 78 km away
57. 1.754 km ESE of Ugashik, AlaskaTue, Sep 14, 7:54 PM AKDT · 1834 days ago · 2 km deep · 72 km away
58. 2.026 km WNW of Karluk, AlaskaWed, Sep 15, 4:06 PM AKDT · 1834 days ago · 70 km deep · 35 km away
59. 1.860 km ESE of Ugashik, AlaskaWed, Sep 15, 9:35 PM AKDT · 1833 days ago · 3 km deep · 74 km away
60. 1.995 km ESE of Ugashik, AlaskaThu, Sep 16, 3:17 PM AKDT · 1833 days ago · 17 km deep · 65 km away

The first 60 of 126.

Before

1. 2.089 km WNW of Karluk, AlaskaFri, Aug 20, 3:35 PM AKDT · 1860 days ago · 100 km deep · 37 km away
2. 2.556 km SE of King Salmon, AlaskaFri, Aug 20, 3:13 PM AKDT · 1860 days ago · 155 km deep · 90 km away
3. 2.381 km W of Karluk, AlaskaFri, Aug 20, 1:07 PM AKDT · 1860 days ago · 6 km deep · 23 km away
4. 1.673 km WNW of Karluk, AlaskaFri, Aug 20, 11:10 AM AKDT · 1860 days ago · 99 km deep · 20 km away
5. 2.270 km ESE of Egegik, AlaskaFri, Aug 20, 7:08 AM AKDT · 1860 days ago · 146 km deep · 67 km away
6. 1.962 km WNW of Akhiok, AlaskaFri, Aug 20, 1:03 AM AKDT · 1860 days ago · 57 km deep · 54 km away
7. 2.5Alaska PeninsulaThu, Aug 19, 10:17 PM AKDT · 1860 days ago · 72 km deep · 35 km away
8. 1.558 km WNW of Akhiok, AlaskaThu, Aug 19, 9:39 AM AKDT · 1861 days ago · 56 km deep · 53 km away
9. 2.297 km W of Akhiok, AlaskaThu, Aug 19, 5:08 AM AKDT · 1861 days ago · 79 km deep · 64 km away
10. 1.657 km W of Akhiok, AlaskaThu, Aug 19, 4:59 AM AKDT · 1861 days ago · 53 km deep · 81 km away
11. 2.067 km NNW of Karluk, AlaskaWed, Aug 18, 7:50 AM AKDT · 1862 days ago · 87 km deep · 67 km away
12. 1.7Alaska PeninsulaWed, Aug 18, 5:31 AM AKDT · 1862 days ago · 85 km deep · 59 km away
13. 1.520 km WNW of Karluk, AlaskaTue, Aug 17, 12:00 AM AKDT · 1863 days ago · 74 km deep · 41 km away
14. 2.393 km WNW of Karluk, AlaskaMon, Aug 16, 12:36 AM AKDT · 1864 days ago · 110 km deep · 42 km away
15. 2.536 km NNE of Karluk, AlaskaSun, Aug 15, 2:00 PM AKDT · 1865 days ago · 54 km deep · 76 km away
16. 1.763 km ESE of Ugashik, AlaskaSun, Aug 15, 1:39 AM AKDT · 1865 days ago · 1 km deep · 74 km away
17. 2.940 km SW of Karluk, AlaskaFri, Aug 13, 6:44 PM AKDT · 1866 days ago · 51 km deep · 42 km away
18. 1.960 km SE of King Salmon, AlaskaThu, Aug 12, 8:32 PM AKDT · 1867 days ago · 155 km deep · 92 km away
19. 1.630 km SSW of Karluk, AlaskaWed, Aug 11, 3:21 AM AKDT · 1869 days ago · 10 km deep · 58 km away
20. 1.630 km N of Akhiok, AlaskaTue, Aug 10, 10:50 PM AKDT · 1869 days ago · 8 km deep · 90 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021apetj2m. Read Wed, Sep 23, 2026, 1:01 PM UTC.