Alaska earthquakes

M3.1 earthquake 60 km WNW of Cold Bay, Alaska

A magnitude 3.1 earthquake struck 60 km WNW of Cold Bay, Alaska on Sat, Oct 16, 2021, 11:08 PM AKDT (07:08 UTC), 163 km (101 mi) below the surface.

A larger quake followed: M3.6 23 km S of False Pass, Alaska. This one was a foreshock.

King Cove 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
3.1 (ml), minor
Local time
UTC
2021-10-17 07:08:44 UTC
Depth
163.0 km (101.3 mi), intermediate-depth
Epicenter
55.408° N, 163.596° 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.

Location uncertainty
About 13.1 km horizontally, 11.6 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
170°
Stations used
37

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 26 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 2.212 km WNW of Cold Bay, Alaska · 1800 days ago · 106 km deep · 48 km away
  2. 1.515 km ENE of King Cove, Alaska · 1792 days ago · 5 km deep · 100 km away
  3. 1.931 km S of Cold Bay, Alaska · 1787 days ago · 6 km deep · 75 km away
  4. 2.227 km SSE of False Pass, Alaska · 1780 days ago · 13 km deep · 90 km away
  5. 1.67 km SW of False Pass, Alaska · 1775 days ago · 13 km deep · 66 km away
  6. 1.726 km SSE of False Pass, Alaska · 1774 days ago · 18 km deep · 90 km away
  7. 1.832 km SSE of False Pass, Alaska · 1773 days ago · 9 km deep · 95 km away
  8. 3.034 km N of Cold Bay, Alaska · 1773 days ago · 179 km deep · 61 km away
  9. 2.122 km S of False Pass, Alaska · 1773 days ago · 13 km deep · 85 km away
  10. 2.122 km S of False Pass, Alaska · 1773 days ago · 23 km deep · 85 km away
  11. 2.831 km N of King Cove, Alaska · 1772 days ago · 172 km deep · 83 km away
  12. 1.924 km S of False Pass, Alaska · 1772 days ago · 25 km deep · 87 km away
  13. 2.130 km SSE of False Pass, Alaska · 1771 days ago · 10 km deep · 93 km away
  14. 2.629 km SE of False Pass, Alaska · 1770 days ago · 61 km deep · 89 km away
  15. 1.727 km SSE of False Pass, Alaska · 1765 days ago · 13 km deep · 90 km away
  16. 1.919 km S of False Pass, Alaska · 1764 days ago · 23 km deep · 83 km away
  17. 1.930 km S of False Pass, Alaska · 1761 days ago · 11 km deep · 93 km away
  18. 3.199 km WNW of False Pass, Alaska · 1758 days ago · 177 km deep · 79 km away
  19. 3.623 km S of False Pass, Alaska · 1756 days ago · 23 km deep · 86 km away
  20. 1.929 km SSE of False Pass, Alaska · 1756 days ago · 13 km deep · 92 km away
  21. 1.930 km S of False Pass, Alaska · 1756 days ago · 13 km deep · 93 km away
  22. 2.536 km SSE of False Pass, Alaska · 1750 days ago · 18 km deep · 99 km away
  23. 1.930 km SSE of False Pass, Alaska · 1748 days ago · 13 km deep · 93 km away
  24. 3.021 km SE of False Pass, Alaska · 1746 days ago · 85 km deep · 81 km away
  25. 1.924 km SSE of False Pass, Alaska · 1744 days ago · 13 km deep · 87 km away
  26. 1.930 km SSE of False Pass, Alaska · 1744 days ago · 18 km deep · 93 km away

Before

  1. 1.632 km S of False Pass, Alaska · 1814 days ago · 11 km deep · 95 km away
  2. 1.511 km NE of King Cove, Alaska · 1819 days ago · 4 km deep · 93 km away
  3. 2.043 km ESE of False Pass, Alaska · 1830 days ago · 11 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000g9m1 (also filed as ak021dbq2iq1). Read Wed, Sep 23, 2026, 4:19 AM UTC.