Alaska earthquakes

M1.6 earthquake 49 km W of Tonsina, Alaska

A magnitude 1.6 earthquake struck 49 km W of Tonsina, Alaska on Thu, Sep 23, 2021, 5:04 PM AKDT (01:04 UTC), 31 km (20 mi) below the surface.

A larger quake followed: M2.0 50 km NW of Valdez, Alaska. This one was a foreshock.

Valdez forecastMore in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.6 (ml), micro
Local time
UTC
2021-09-24 01:04:49 UTC
Depth
31.4 km (19.5 mi), shallow
Epicenter
61.629° N, 146.100° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
33

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 66 in the 60 days after this one and 39 in the 30 days before it.

After

  1. 2.050 km NW of Valdez, Alaska · 1826 days ago · 20 km deep · 55 km away
  2. 2.141 km NNW of Valdez, Alaska · 1824 days ago · 2 km deep · 28 km away
  3. 1.811 km NNW of Glennallen, Alaska · 1824 days ago · 16 km deep · 67 km away
  4. 2.015 km NNW of Glacier View, Alaska · 1823 days ago · 29 km deep · 95 km away
  5. 2.047 km SSE of Nelchina, Alaska · 1821 days ago · 26 km deep · 12 km away
  6. 1.749 km SSE of Nelchina, Alaska · 1820 days ago · 18 km deep · 15 km away
  7. 1.649 km SSE of Nelchina, Alaska · 1819 days ago · 32 km deep · 12 km away
  8. 1.646 km N of Valdez, Alaska · 1818 days ago · 20 km deep · 13 km away
  9. 1.550 km NNE of Valdez, Alaska · 1818 days ago · 30 km deep · 7 km away
  10. 1.537 km NNW of Valdez, Alaska · 1817 days ago · 13 km deep · 31 km away
  11. 1.520 km SSE of Glacier View, Alaska · 1816 days ago · 26 km deep · 75 km away
  12. 1.711 km WSW of Tatitlek, Alaska · 1816 days ago · 15 km deep · 99 km away
  13. 1.648 km NNW of Valdez, Alaska · 1815 days ago · 12 km deep · 36 km away
  14. 1.753 km WNW of Valdez, Alaska · 1815 days ago · 9 km deep · 73 km away
  15. 1.622 km WNW of Valdez, Alaska · 1814 days ago · 3 km deep · 54 km away
  16. 1.840 km NNE of Kenny Lake, Alaska · 1813 days ago · 9 km deep · 93 km away
  17. 1.745 km NNW of Valdez, Alaska · 1813 days ago · 7 km deep · 38 km away
  18. 1.549 km NNW of Valdez, Alaska · 1812 days ago · 19 km deep · 31 km away
  19. 1.626 km E of Valdez, Alaska · 1812 days ago · 20 km deep · 58 km away
  20. 1.629 km NW of Valdez, Alaska · 1811 days ago · 6 km deep · 45 km away
  21. 1.633 km NNW of Valdez, Alaska · 1811 days ago · 9 km deep · 37 km away
  22. 1.65 km E of Glacier View, Alaska · 1811 days ago · 36 km deep · 79 km away
  23. 1.545 km NNW of Valdez, Alaska · 1808 days ago · 15 km deep · 26 km away
  24. 2.137 km NW of Valdez, Alaska · 1807 days ago · 12 km deep · 45 km away
  25. 1.536 km NNW of Valdez, Alaska · 1807 days ago · 11 km deep · 38 km away
  26. 1.533 km WNW of Valdez, Alaska · 1805 days ago · 13 km deep · 66 km away
  27. 1.724 km SSW of Glacier View, Alaska · 1805 days ago · 14 km deep · 90 km away
  28. 1.926 km WNW of Tatitlek, Alaska · 1802 days ago · 15 km deep · 89 km away
  29. 1.635 km W of Valdez, Alaska · 1801 days ago · 20 km deep · 69 km away
  30. 1.639 km NNW of Valdez, Alaska · 1800 days ago · 15 km deep · 41 km away
  31. 1.948 km N of Valdez, Alaska · 1800 days ago · 17 km deep · 20 km away
  32. 2.243 km WSW of Tonsina, Alaska · 1798 days ago · 25 km deep · 11 km away
  33. 2.038 km NNW of Valdez, Alaska · 1798 days ago · 12 km deep · 31 km away
  34. 2.239 km NW of Valdez, Alaska · 1798 days ago · 9 km deep · 46 km away
  35. 1.529 km NNW of Valdez, Alaska · 1797 days ago · 15 km deep · 34 km away
  36. 1.639 km N of Cordova, Alaska · 1796 days ago · 20 km deep · 83 km away
  37. 1.647 km N of Valdez, Alaska · 1794 days ago · 25 km deep · 24 km away
  38. 1.545 km NNW of Valdez, Alaska · 1793 days ago · 43 km deep · 27 km away
  39. 2.739 km NNW of Valdez, Alaska · 1791 days ago · 26 km deep · 28 km away
  40. 1.740 km NNW of Valdez, Alaska · 1790 days ago · 20 km deep · 31 km away
  41. 2.142 km N of Valdez, Alaska · 1788 days ago · 20 km deep · 21 km away
  42. 1.637 km NW of Valdez, Alaska · 1787 days ago · 18 km deep · 50 km away
  43. 1.919 km N of Valdez, Alaska · 1786 days ago · 13 km deep · 39 km away
  44. 1.644 km NW of Tatitlek, Alaska · 1785 days ago · 12 km deep · 78 km away
  45. 1.844 km NNW of Valdez, Alaska · 1782 days ago · 15 km deep · 26 km away
  46. 1.546 km SSE of Nelchina, Alaska · 1781 days ago · 25 km deep · 12 km away
  47. 2.249 km SSE of Nelchina, Alaska · 1780 days ago · 15 km deep · 19 km away
  48. 2.244 km SSE of Nelchina, Alaska · 1779 days ago · 23 km deep · 24 km away
  49. 1.546 km N of Valdez, Alaska · 1778 days ago · 36 km deep · 15 km away
  50. 2.744 km N of Valdez, Alaska · 1777 days ago · 27 km deep · 23 km away
  51. 2.038 km N of Valdez, Alaska · 1777 days ago · 33 km deep · 26 km away
  52. 2.0Central Alaska · 1777 days ago · 30 km deep · 94 km away
  53. 1.646 km NW of Tatitlek, Alaska · 1776 days ago · 1 km deep · 82 km away
  54. 1.526 km NNE of Valdez, Alaska · 1774 days ago · 21 km deep · 31 km away
  55. 1.630 km NE of Valdez, Alaska · 1774 days ago · 20 km deep · 33 km away
  56. 1.59 km S of Valdez, Alaska · 1773 days ago · 11 km deep · 66 km away
  57. 1.728 km WNW of Tatitlek, Alaska · 1773 days ago · 20 km deep · 89 km away
  58. 1.823 km N of Glacier View, Alaska · 1772 days ago · 20 km deep · 94 km away
  59. 1.735 km NNE of Cordova, Alaska · 1771 days ago · 14 km deep · 90 km away
  60. 2.144 km NW of Tatitlek, Alaska · 1770 days ago · 5 km deep · 78 km away

The first 60 of 66.

Before

  1. 1.611 km NE of Silver Springs, Alaska · 1827 days ago · 53 km deep · 70 km away
  2. 3.124 km NNW of Cordova, Alaska · 1828 days ago · 10 km deep · 99 km away · felt by 1
  3. 1.58 km NNW of Glennallen, Alaska · 1830 days ago · 20 km deep · 67 km away
  4. 1.710 km ENE of Valdez, Alaska · 1831 days ago · 1 km deep · 51 km away
  5. 1.525 km S of Eureka Roadhouse, Alaska · 1833 days ago · 30 km deep · 56 km away
  6. 1.644 km NW of Tatitlek, Alaska · 1833 days ago · 10 km deep · 78 km away
  7. 2.630 km NNE of Valdez, Alaska · 1834 days ago · 28 km deep · 26 km away
  8. 1.613 km NNW of Glennallen, Alaska · 1835 days ago · 16 km deep · 69 km away
  9. 1.844 km NW of Tatitlek, Alaska · 1835 days ago · 5 km deep · 78 km away
  10. 3.614 km NW of Glennallen, Alaska · 1835 days ago · 12 km deep · 68 km away · felt by 16
  11. 1.548 km N of Valdez, Alaska · 1837 days ago · 30 km deep · 13 km away
  12. 2.048 km SSE of Nelchina, Alaska · 1837 days ago · 25 km deep · 14 km away
  13. 1.519 km NNW of Valdez, Alaska · 1839 days ago · 27 km deep · 44 km away
  14. 1.634 km SSE of Nelchina, Alaska · 1839 days ago · 27 km deep · 25 km away
  15. 1.748 km N of Valdez, Alaska · 1839 days ago · 28 km deep · 20 km away
  16. 1.751 km SSE of Glacier View, Alaska · 1840 days ago · 14 km deep · 76 km away
  17. 3.347 km SSE of Nelchina, Alaska · 1840 days ago · 13 km deep · 23 km away
  18. 2.044 km WNW of Tatitlek, Alaska · 1841 days ago · 19 km deep · 97 km away
  19. 1.750 km N of Valdez, Alaska · 1841 days ago · 21 km deep · 14 km away
  20. 2.348 km N of Valdez, Alaska · 1842 days ago · 26 km deep · 15 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021c9l422o. Read Thu, Sep 24, 2026, 8:42 AM UTC.