M1.6 earthquake 47 km W of Tyonek, Alaska

Magnitude

1.6 (ml), micro

Local time

Sat, Sep 4, 2021, 12:57 AM AKDT

UTC

2021-09-04 08:57:54 UTC

Depth

88.3 km (54.9 mi), intermediate-depth

Epicenter

61.033° N, 152.009° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

66

• Nikiski, AlaskaPopulation 4,493. Forecast55 kmNW
• Anchorage, AlaskaPopulation 289,600. Forecast115 kmW

After

1. 1.726 km SSW of Susitna, AlaskaSat, Sep 4, 5:31 AM AKDT · 1846 days ago · 60 km deep · 80 km away
2. 1.510 km NW of Point Possession, AlaskaSat, Sep 4, 8:34 AM AKDT · 1846 days ago · 54 km deep · 65 km away
3. 1.53 km NNW of Beluga, AlaskaSat, Sep 4, 9:05 AM AKDT · 1846 days ago · 61 km deep · 51 km away
4. 2.332 km W of Salamatof, AlaskaSat, Sep 4, 3:05 PM AKDT · 1846 days ago · 75 km deep · 52 km away
5. 1.516 km NNW of Sterling, AlaskaSun, Sep 5, 9:13 AM AKDT · 1845 days ago · 52 km deep · 72 km away
6. 2.521 km W of Tyonek, AlaskaSun, Sep 5, 10:46 PM AKDT · 1844 days ago · 75 km deep · 26 km away
7. 1.628 km NW of Susitna, AlaskaMon, Sep 6, 1:35 AM AKDT · 1844 days ago · 65 km deep · 92 km away
8. 1.921 km W of Susitna, AlaskaTue, Sep 7, 6:14 AM AKDT · 1843 days ago · 62 km deep · 84 km away
9. 2.085 km NW of Ninilchik, AlaskaTue, Sep 7, 2:32 PM AKDT · 1843 days ago · 146 km deep · 73 km away
10. 1.926 km WSW of Anchorage, AlaskaTue, Sep 7, 9:17 PM AKDT · 1842 days ago · 43 km deep · 89 km away
11. 2.053 km NW of Ninilchik, AlaskaTue, Sep 7, 10:08 PM AKDT · 1842 days ago · 85 km deep · 81 km away
12. 1.723 km NW of Nikiski, AlaskaWed, Sep 8, 10:21 AM AKDT · 1842 days ago · 78 km deep · 32 km away
13. 2.43 km SW of Susitna, AlaskaWed, Sep 8, 10:44 AM AKDT · 1842 days ago · 65 km deep · 94 km away
14. 2.288 km ENE of Port Alsworth, AlaskaWed, Sep 8, 11:15 AM AKDT · 1842 days ago · 137 km deep · 69 km away
15. 2.328 km WSW of Point MacKenzie, AlaskaWed, Sep 8, 6:53 PM AKDT · 1842 days ago · 41 km deep · 87 km away
16. 1.727 km NW of Beluga, AlaskaThu, Sep 9, 6:23 AM AKDT · 1841 days ago · 64 km deep · 45 km away
17. 1.755 km WNW of Ninilchik, AlaskaThu, Sep 9, 7:24 AM AKDT · 1841 days ago · 101 km deep · 98 km away
18. 2.045 km NW of Ninilchik, AlaskaThu, Sep 9, 3:24 PM AKDT · 1841 days ago · 82 km deep · 80 km away
19. 3.324 km WNW of Clam Gulch, AlaskaThu, Sep 9, 9:31 PM AKDT · 1840 days ago · 66 km deep · 77 km away
20. 1.559 km WNW of Nikiski, AlaskaFri, Sep 10, 2:05 AM AKDT · 1840 days ago · 11 km deep · 25 km away
21. 1.754 km WNW of Ninilchik, AlaskaFri, Sep 10, 4:49 AM AKDT · 1840 days ago · 102 km deep · 99 km away
22. 2.010 km SSE of Kasilof, AlaskaFri, Sep 10, 6:59 AM AKDT · 1840 days ago · 57 km deep · 97 km away
23. 2.52 km ESE of Tyonek, AlaskaFri, Sep 10, 9:28 AM AKDT · 1840 days ago · 57 km deep · 50 km away
24. 1.836 km NW of Ninilchik, AlaskaFri, Sep 10, 9:50 AM AKDT · 1840 days ago · 95 km deep · 86 km away
25. 1.534 km NW of Nikiski, AlaskaFri, Sep 10, 2:43 PM AKDT · 1840 days ago · 78 km deep · 20 km away
26. 3.95 km SSW of Kasilof, AlaskaFri, Sep 10, 9:58 PM AKDT · 1839 days ago · 60 km deep · 90 km away · felt by 39 · tsunami flag
27. 1.94 km SW of Kasilof, AlaskaFri, Sep 10, 10:03 PM AKDT · 1839 days ago · 58 km deep · 88 km away · felt by 1
28. 1.741 km NW of Ninilchik, AlaskaSat, Sep 11, 11:46 AM AKDT · 1839 days ago · 84 km deep · 83 km away
29. 1.538 km WSW of Salamatof, AlaskaSat, Sep 11, 5:04 PM AKDT · 1839 days ago · 86 km deep · 59 km away
30. 2.066 km W of Tyonek, AlaskaSat, Sep 11, 8:54 PM AKDT · 1838 days ago · 112 km deep · 20 km away
31. 1.674 km NE of Port Alsworth, AlaskaSun, Sep 12, 1:25 AM AKDT · 1838 days ago · 170 km deep · 84 km away
32. 1.957 km NW of Ninilchik, AlaskaSun, Sep 12, 6:19 AM AKDT · 1838 days ago · 104 km deep · 81 km away
33. 1.760 km W of Tyonek, AlaskaSun, Sep 12, 8:08 PM AKDT · 1838 days ago · 92 km deep · 15 km away
34. 1.719 km SW of Tyonek, AlaskaMon, Sep 13, 2:16 AM AKDT · 1837 days ago · 117 km deep · 37 km away
35. 1.955 km NW of Ninilchik, AlaskaMon, Sep 13, 3:28 AM AKDT · 1837 days ago · 91 km deep · 73 km away
36. 2.045 km SW of Skwentna, AlaskaMon, Sep 13, 4:08 AM AKDT · 1837 days ago · 110 km deep · 75 km away
37. 2.272 km NW of Ninilchik, AlaskaMon, Sep 13, 5:48 PM AKDT · 1837 days ago · 110 km deep · 76 km away
38. 1.910 km S of Tyonek, AlaskaMon, Sep 13, 7:27 PM AKDT · 1837 days ago · 52 km deep · 46 km away
39. 2.379 km W of Salamatof, AlaskaTue, Sep 14, 1:54 PM AKDT · 1836 days ago · 119 km deep · 70 km away
40. 1.569 km WNW of Ninilchik, AlaskaTue, Sep 14, 6:09 PM AKDT · 1836 days ago · 119 km deep · 95 km away
41. 1.663 km W of Tyonek, AlaskaWed, Sep 15, 2:24 AM AKDT · 1835 days ago · 107 km deep · 16 km away
42. 1.716 km WSW of Tyonek, AlaskaWed, Sep 15, 7:34 AM AKDT · 1835 days ago · 61 km deep · 32 km away
43. 1.681 km W of Salamatof, AlaskaWed, Sep 15, 11:51 AM AKDT · 1835 days ago · 115 km deep · 70 km away
44. 1.669 km WNW of Ninilchik, AlaskaThu, Sep 16, 1:02 AM AKDT · 1834 days ago · 113 km deep · 86 km away
45. 2.046 km W of Tyonek, AlaskaThu, Sep 16, 4:46 AM AKDT · 1834 days ago · 103 km deep · 12 km away
46. 1.520 km E of Kasilof, AlaskaThu, Sep 16, 5:43 AM AKDT · 1834 days ago · 44 km deep · 100 km away
47. 1.819 km ENE of Sterling, AlaskaThu, Sep 16, 4:37 PM AKDT · 1834 days ago · 19 km deep · 100 km away · felt by 1
48. 1.855 km WNW of Nikiski, AlaskaThu, Sep 16, 9:10 PM AKDT · 1833 days ago · 90 km deep · 27 km away
49. 3.237 km NW of Beluga, AlaskaThu, Sep 16, 10:05 PM AKDT · 1833 days ago · 86 km deep · 51 km away · felt by 1
50. 1.967 km W of Tyonek, AlaskaThu, Sep 16, 10:40 PM AKDT · 1833 days ago · 118 km deep · 21 km away
51. 1.672 km WNW of Tyonek, AlaskaFri, Sep 17, 1:26 PM AKDT · 1833 days ago · 119 km deep · 35 km away
52. 1.930 km WSW of Point MacKenzie, AlaskaFri, Sep 17, 9:48 PM AKDT · 1832 days ago · 36 km deep · 85 km away
53. 1.66 km NW of Susitna, AlaskaFri, Sep 17, 9:58 PM AKDT · 1832 days ago · 31 km deep · 98 km away
54. 1.622 km NW of Susitna, AlaskaSat, Sep 18, 2:37 AM AKDT · 1832 days ago · 48 km deep · 96 km away
55. 1.619 km NNW of Sterling, AlaskaSat, Sep 18, 5:38 PM AKDT · 1832 days ago · 52 km deep · 72 km away
56. 1.77 km NW of Kalifornsky, AlaskaSat, Sep 18, 10:15 PM AKDT · 1831 days ago · 55 km deep · 71 km away
57. 1.954 km NW of Ninilchik, AlaskaSat, Sep 18, 11:33 PM AKDT · 1831 days ago · 86 km deep · 76 km away
58. 1.527 km NW of Beluga, AlaskaSun, Sep 19, 12:15 AM AKDT · 1831 days ago · 65 km deep · 45 km away
59. 1.761 km SSW of Skwentna, AlaskaMon, Sep 20, 4:28 AM AKDT · 1830 days ago · 9 km deep · 54 km away
60. 1.642 km W of Salamatof, AlaskaMon, Sep 20, 11:11 AM AKDT · 1830 days ago · 79 km deep · 46 km away

The first 60 of at least 200.

Before

1. 2.515 km N of Beluga, AlaskaFri, Sep 3, 9:37 AM AKDT · 1847 days ago · 70 km deep · 55 km away · felt by 1
2. 1.636 km W of Susitna, AlaskaFri, Sep 3, 8:18 AM AKDT · 1847 days ago · 70 km deep · 76 km away
3. 1.938 km W of Nikiski, AlaskaFri, Sep 3, 6:14 AM AKDT · 1847 days ago · 85 km deep · 31 km away
4. 2.234 km WNW of Beluga, AlaskaFri, Sep 3, 5:38 AM AKDT · 1847 days ago · 81 km deep · 32 km away
5. 1.771 km W of Tyonek, AlaskaThu, Sep 2, 7:50 AM AKDT · 1848 days ago · 108 km deep · 24 km away
6. 1.516 km ENE of Sterling, AlaskaThu, Sep 2, 5:14 AM AKDT · 1848 days ago · 45 km deep · 94 km away
7. 1.50 km SSE of Sterling, AlaskaThu, Sep 2, 2:36 AM AKDT · 1848 days ago · 20 km deep · 88 km away
8. 1.666 km W of Tyonek, AlaskaWed, Sep 1, 11:41 PM AKDT · 1848 days ago · 105 km deep · 19 km away
9. 1.622 km NNW of Ninilchik, AlaskaWed, Sep 1, 11:22 PM AKDT · 1848 days ago · 67 km deep · 89 km away
10. 1.78 km NE of Nikiski, AlaskaWed, Sep 1, 10:38 PM AKDT · 1848 days ago · 83 km deep · 56 km away
11. 2.237 km W of Nikiski, AlaskaWed, Sep 1, 11:12 AM AKDT · 1849 days ago · 89 km deep · 35 km away
12. 1.568 km W of Tyonek, AlaskaWed, Sep 1, 10:32 AM AKDT · 1849 days ago · 115 km deep · 21 km away
13. 1.812 km SE of Beluga, AlaskaWed, Sep 1, 5:48 AM AKDT · 1849 days ago · 62 km deep · 60 km away
14. 1.612 km E of Kasilof, AlaskaTue, Aug 31, 6:09 PM AKDT · 1850 days ago · 51 km deep · 94 km away
15. 1.726 km SSW of Skwentna, AlaskaTue, Aug 31, 5:24 PM AKDT · 1850 days ago · 94 km deep · 85 km away
16. 1.916 km SW of Tyonek, AlaskaTue, Aug 31, 3:56 PM AKDT · 1850 days ago · 67 km deep · 35 km away
17. 1.79 km NW of Point Possession, AlaskaMon, Aug 30, 10:22 PM AKDT · 1850 days ago · 13 km deep · 64 km away
18. 1.541 km SW of Skwentna, AlaskaMon, Aug 30, 9:11 AM AKDT · 1851 days ago · 100 km deep · 73 km away
19. 2.29 km SW of Susitna, AlaskaMon, Aug 30, 12:28 AM AKDT · 1851 days ago · 45 km deep · 89 km away
20. 1.511 km ESE of Tyonek, AlaskaSun, Aug 29, 11:24 PM AKDT · 1851 days ago · 55 km deep · 58 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021bcmuiss. Read Thu, Sep 24, 2026, 3:40 PM UTC.