Alaska earthquakes

M1.8 earthquake 87 km SSW of Unalaska, Alaska

A magnitude 1.8 earthquake struck 87 km SSW of Unalaska, Alaska on Tue, Apr 6, 2021, 12:50 AM AKDT (08:50 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M3.8 81 km S of Unalaska, Alaska. This one was a foreshock.

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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
2021-04-06 08:50:53 UTC
Depth
25.5 km (15.8 mi), shallow
Epicenter
53.135° N, 166.999° 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
22

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and 37 in the 30 days before it.

After

  1. 3.1Fox Islands, Aleutian Islands, Alaska · 2001 days ago · 20 km deep · 89 km away
  2. 2.244 km ESE of Nikolski, Alaska · 2000 days ago · 55 km deep · 92 km away
  3. 1.669 km WSW of Unalaska, Alaska · 1998 days ago · 14 km deep · 58 km away
  4. 1.570 km WSW of Unalaska, Alaska · 1998 days ago · 8 km deep · 61 km away
  5. 2.045 km SE of Unalaska, Alaska · 1997 days ago · 39 km deep · 78 km away
  6. 2.9Fox Islands, Aleutian Islands, Alaska · 1997 days ago · 52 km deep · 14 km away
  7. 1.879 km SE of Unalaska, Alaska · 1995 days ago · 16 km deep · 84 km away
  8. 1.969 km E of Nikolski, Alaska · 1995 days ago · 40 km deep · 57 km away
  9. 1.986 km SW of Unalaska, Alaska · 1993 days ago · 26 km deep · 30 km away
  10. 1.769 km S of Unalaska, Alaska · 1992 days ago · 21 km deep · 32 km away
  11. 2.6131 km S of Unalaska, Alaska · 1992 days ago · 4 km deep · 55 km away
  12. 3.0142 km ESE of Nikolski, Alaska · 1991 days ago · 6 km deep · 61 km away
  13. 1.663 km SSW of Unalaska, Alaska · 1991 days ago · 30 km deep · 25 km away
  14. 1.687 km SE of Unalaska, Alaska · 1990 days ago · 68 km deep · 96 km away
  15. 1.582 km SW of Unalaska, Alaska · 1990 days ago · 62 km deep · 26 km away
  16. 1.755 km ESE of Nikolski, Alaska · 1990 days ago · 26 km deep · 91 km away
  17. 2.68 km WNW of Dutch Harbor, Alaska · 1989 days ago · 114 km deep · 88 km away
  18. 1.523 km W of Dutch Harbor, Alaska · 1988 days ago · 5 km deep · 83 km away
  19. 2.865 km SE of Nikolski, Alaska · 1988 days ago · 35 km deep · 93 km away
  20. 1.926 km ESE of Unalaska, Alaska · 1987 days ago · 74 km deep · 92 km away
  21. 2.169 km SE of Unalaska, Alaska · 1987 days ago · 23 km deep · 95 km away
  22. 3.286 km E of Nikolski, Alaska · 1986 days ago · 35 km deep · 46 km away
  23. 1.865 km SE of Unalaska, Alaska · 1984 days ago · 11 km deep · 86 km away
  24. 1.730 km SW of Unalaska, Alaska · 1983 days ago · 79 km deep · 59 km away
  25. 2.869 km SE of Nikolski, Alaska · 1981 days ago · 22 km deep · 91 km away
  26. 2.792 km ESE of Nikolski, Alaska · 1981 days ago · 26 km deep · 57 km away
  27. 1.731 km SE of Unalaska, Alaska · 1981 days ago · 43 km deep · 75 km away
  28. 2.6105 km S of Unalaska, Alaska · 1979 days ago · 32 km deep · 27 km away
  29. 3.6119 km E of Nikolski, Alaska · 1978 days ago · 51 km deep · 33 km away
  30. 2.088 km E of Nikolski, Alaska · 1973 days ago · 50 km deep · 53 km away
  31. 3.653 km ESE of Nikolski, Alaska · 1972 days ago · 35 km deep · 95 km away
  32. 1.57 km N of Dutch Harbor, Alaska · 1971 days ago · 10 km deep · 97 km away
  33. 1.972 km SSE of Unalaska, Alaska · 1964 days ago · 20 km deep · 66 km away
  34. 2.240 km ESE of Nikolski, Alaska · 1963 days ago · 30 km deep · 96 km away
  35. 2.746 km ESE of Nikolski, Alaska · 1957 days ago · 24 km deep · 86 km away
  36. 3.733 km SSW of Unalaska, Alaska · 1957 days ago · 77 km deep · 55 km away
  37. 1.686 km SSW of Unalaska, Alaska · 1947 days ago · 23 km deep · 19 km away
  38. 3.472 km SSW of Unalaska, Alaska · 1946 days ago · 53 km deep · 17 km away
  39. 3.881 km S of Unalaska, Alaska · 1942 days ago · 35 km deep · 28 km away

Before

  1. 1.953 km ESE of Nikolski, Alaska · 2002 days ago · 26 km deep · 86 km away
  2. 1.849 km SW of Unalaska, Alaska · 2003 days ago · 68 km deep · 49 km away
  3. 3.446 km ESE of Nikolski, Alaska · 2004 days ago · 35 km deep · 94 km away
  4. 1.679 km SE of Unalaska, AK · 2005 days ago · 22 km deep · 94 km away
  5. 3.093 km WSW of Unalaska, Alaska · 2005 days ago · 71 km deep · 78 km away
  6. 3.366 km SE of Unalaska, Alaska · 2007 days ago · 35 km deep · 92 km away
  7. 2.077 km SSW of Unalaska, Alaska · 2008 days ago · 25 km deep · 16 km away
  8. 2.834 km SSE of Unalaska, Alaska · 2008 days ago · 70 km deep · 69 km away
  9. 1.743 km W of Dutch Harbor, Alaska · 2010 days ago · 7 km deep · 78 km away
  10. 2.548 km ESE of Nikolski, Alaska · 2011 days ago · 35 km deep · 89 km away
  11. 1.6104 km E of Nikolski, Alaska · 2013 days ago · 26 km deep · 31 km away
  12. 2.938 km SSE of Unalaska, Alaska · 2013 days ago · 80 km deep · 65 km away
  13. 1.727 km S of Unalaska, Alaska · 2013 days ago · 89 km deep · 61 km away
  14. 1.771 km SSW of Unalaska, Alaska · 2014 days ago · 50 km deep · 16 km away
  15. 1.8107 km E of Nikolski, Alaska · 2014 days ago · 16 km deep · 29 km away
  16. 2.3124 km S of Unalaska, Alaska · 2014 days ago · 5 km deep · 41 km away
  17. 2.880 km SE of Unalaska, Alaska · 2016 days ago · 35 km deep · 88 km away
  18. 2.266 km SE of Unalaska, Alaska · 2016 days ago · 48 km deep · 88 km away
  19. 2.070 km SE of Unalaska, Alaska · 2016 days ago · 15 km deep · 89 km away
  20. 3.077 km SE of Unalaska, Alaska · 2016 days ago · 27 km deep · 88 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0214ewnm6t. Read Mon, Sep 28, 2026, 8:08 PM UTC.