Alaska earthquakes

M1.8 earthquake Southern Alaska

A magnitude 1.8 earthquake struck in Southern Alaska on Mon, Oct 18, 2021, 3:02 PM AKDT (23:02 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.5 75 km S of Kokhanok, Alaska. This one was a foreshock.

New Stuyahok 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
1.8 (ml), micro
Local time
UTC
2021-10-18 23:02:06 UTC
Depth
7.7 km (4.8 mi), shallow
Epicenter
59.409° N, 155.509° 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
40

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 2.064 km SE of Kokhanok, Alaska · 1803 days ago · 102 km deep · 96 km away
  2. 2.355 km S of Kokhanok, Alaska · 1802 days ago · 130 km deep · 72 km away
  3. 2.28 km ESE of Kokhanok, Alaska · 1801 days ago · 168 km deep · 49 km away
  4. 1.679 km S of Kokhanok, Alaska · 1795 days ago · 124 km deep · 86 km away
  5. 2.432 km E of King Salmon, Alaska · 1795 days ago · 190 km deep · 83 km away
  6. 2.1Alaska Peninsula · 1793 days ago · 136 km deep · 74 km away
  7. 2.360 km SSE of Kokhanok, Alaska · 1791 days ago · 129 km deep · 80 km away
  8. 2.89 km SW of Pedro Bay, Alaska · 1790 days ago · 169 km deep · 80 km away
  9. 1.980 km S of Kokhanok, Alaska · 1787 days ago · 138 km deep · 82 km away
  10. 1.660 km SE of Kokhanok, Alaska · 1787 days ago · 107 km deep · 92 km away
  11. 2.122 km SSE of Kokhanok, Alaska · 1786 days ago · 155 km deep · 56 km away
  12. 1.664 km S of Kokhanok, Alaska · 1776 days ago · 127 km deep · 80 km away
  13. 1.973 km SSE of Kokhanok, Alaska · 1771 days ago · 103 km deep · 96 km away
  14. 2.8Alaska Peninsula · 1768 days ago · 116 km deep · 82 km away
  15. 1.638 km E of New Stuyahok, Alaska · 1767 days ago · 2 km deep · 65 km away
  16. 1.963 km SSE of Kokhanok, Alaska · 1765 days ago · 119 km deep · 80 km away
  17. 2.066 km SSE of Kokhanok, Alaska · 1764 days ago · 116 km deep · 86 km away
  18. 2.253 km S of Kokhanok, Alaska · 1759 days ago · 133 km deep · 70 km away
  19. 2.250 km NNW of Igiugig, Alaska · 1759 days ago · 60 km deep · 53 km away
  20. 3.575 km S of Kokhanok, Alaska · 1758 days ago · 133 km deep · 84 km away
  21. 2.182 km SSE of Igiugig, Alaska · 1756 days ago · 129 km deep · 82 km away
  22. 2.743 km ESE of King Salmon, Alaska · 1756 days ago · 166 km deep · 96 km away
  23. 1.857 km SSE of Kokhanok, Alaska · 1746 days ago · 110 km deep · 84 km away
  24. 1.7Alaska Peninsula · 1746 days ago · 123 km deep · 79 km away

Before

  1. 1.636 km E of New Stuyahok, Alaska · 1809 days ago · 2 km deep · 66 km away
  2. 2.235 km ESE of King Salmon, Alaska · 1809 days ago · 167 km deep · 95 km away
  3. 3.560 km SE of Kokhanok, Alaska · 1809 days ago · 107 km deep · 93 km away · felt by 2
  4. 1.758 km SSE of Kokhanok, Alaska · 1811 days ago · 101 km deep · 86 km away
  5. 2.188 km E of King Salmon, Alaska · 1814 days ago · 134 km deep · 92 km away
  6. 1.864 km SSE of Kokhanok, Alaska · 1815 days ago · 138 km deep · 82 km away
  7. 1.966 km S of Kokhanok, Alaska · 1815 days ago · 148 km deep · 80 km away
  8. 3.892 km SSE of Igiugig, Alaska · 1818 days ago · 129 km deep · 91 km away
  9. 2.168 km S of Kokhanok, Alaska · 1820 days ago · 120 km deep · 84 km away
  10. 1.754 km SSE of Kokhanok, Alaska · 1824 days ago · 116 km deep · 81 km away
  11. 1.972 km SSE of Kokhanok, Alaska · 1831 days ago · 101 km deep · 99 km away
  12. 1.951 km SSE of Kokhanok, Alaska · 1831 days ago · 124 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021ddn3eif. Read Sun, Sep 27, 2026, 9:05 AM UTC.