Alaska earthquakes

M1.6 earthquake 66 km SW of Unalaska, Alaska

A magnitude 1.6 earthquake struck 66 km SW of Unalaska, Alaska on Tue, Mar 16, 2021, 5:12 PM AKDT (01:12 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M3.2 78 km S of Unalaska, Alaska. This one was a foreshock.

Unalaska 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
2021-03-17 01:12:32 UTC
Depth
13.2 km (8.2 mi), shallow
Epicenter
53.504° N, 167.330° 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: 42 in the 60 days after this one and 20 in the 30 days before it.

After

  1. 1.574 km S of Unalaska, Alaska · 2016 days ago · 45 km deep · 54 km away
  2. 3.278 km S of Unalaska, Alaska · 2016 days ago · 25 km deep · 57 km away
  3. 1.988 km ENE of Nikolski, Alaska · 2014 days ago · 55 km deep · 43 km away
  4. 1.825 km SSW of Unalaska, Alaska · 2013 days ago · 70 km deep · 50 km away
  5. 2.3124 km S of Unalaska, Alaska · 2009 days ago · 5 km deep · 86 km away
  6. 1.8107 km E of Nikolski, Alaska · 2009 days ago · 16 km deep · 64 km away
  7. 1.771 km SSW of Unalaska, Alaska · 2009 days ago · 50 km deep · 40 km away
  8. 1.727 km S of Unalaska, Alaska · 2009 days ago · 89 km deep · 50 km away
  9. 2.938 km SSE of Unalaska, Alaska · 2008 days ago · 80 km deep · 67 km away
  10. 1.6104 km E of Nikolski, Alaska · 2008 days ago · 26 km deep · 64 km away
  11. 2.548 km ESE of Nikolski, Alaska · 2006 days ago · 35 km deep · 99 km away
  12. 1.743 km W of Dutch Harbor, Alaska · 2006 days ago · 7 km deep · 37 km away
  13. 2.834 km SSE of Unalaska, Alaska · 2004 days ago · 70 km deep · 68 km away
  14. 2.077 km SSW of Unalaska, Alaska · 2004 days ago · 25 km deep · 51 km away
  15. 3.093 km WSW of Unalaska, Alaska · 2001 days ago · 71 km deep · 38 km away
  16. 1.849 km SW of Unalaska, Alaska · 1998 days ago · 68 km deep · 18 km away
  17. 1.953 km ESE of Nikolski, Alaska · 1998 days ago · 26 km deep · 98 km away
  18. 1.887 km SSW of Unalaska, Alaska · 1997 days ago · 26 km deep · 47 km away
  19. 2.244 km ESE of Nikolski, Alaska · 1996 days ago · 55 km deep · 100 km away
  20. 1.669 km WSW of Unalaska, Alaska · 1993 days ago · 14 km deep · 12 km away
  21. 1.570 km WSW of Unalaska, Alaska · 1993 days ago · 8 km deep · 15 km away
  22. 2.045 km SE of Unalaska, Alaska · 1992 days ago · 39 km deep · 83 km away
  23. 2.9Fox Islands, Aleutian Islands, Alaska · 1992 days ago · 52 km deep · 32 km away
  24. 1.969 km E of Nikolski, Alaska · 1990 days ago · 40 km deep · 66 km away
  25. 1.986 km SW of Unalaska, Alaska · 1988 days ago · 26 km deep · 25 km away
  26. 1.769 km S of Unalaska, Alaska · 1988 days ago · 21 km deep · 59 km away
  27. 1.663 km SSW of Unalaska, Alaska · 1986 days ago · 30 km deep · 30 km away
  28. 1.582 km SW of Unalaska, Alaska · 1986 days ago · 62 km deep · 25 km away
  29. 2.68 km WNW of Dutch Harbor, Alaska · 1984 days ago · 114 km deep · 62 km away
  30. 1.523 km W of Dutch Harbor, Alaska · 1983 days ago · 5 km deep · 50 km away
  31. 1.926 km ESE of Unalaska, Alaska · 1982 days ago · 74 km deep · 84 km away
  32. 3.286 km E of Nikolski, Alaska · 1981 days ago · 35 km deep · 69 km away
  33. 1.865 km SE of Unalaska, Alaska · 1979 days ago · 11 km deep · 100 km away
  34. 1.730 km SW of Unalaska, Alaska · 1978 days ago · 79 km deep · 39 km away
  35. 2.792 km ESE of Nikolski, Alaska · 1976 days ago · 26 km deep · 87 km away
  36. 1.731 km SE of Unalaska, Alaska · 1976 days ago · 43 km deep · 73 km away
  37. 2.6105 km S of Unalaska, Alaska · 1974 days ago · 32 km deep · 73 km away
  38. 3.6119 km E of Nikolski, Alaska · 1974 days ago · 51 km deep · 75 km away
  39. 1.629 km W of Akutan, Alaska · 1969 days ago · 71 km deep · 99 km away
  40. 2.088 km E of Nikolski, Alaska · 1969 days ago · 50 km deep · 80 km away
  41. 1.57 km N of Dutch Harbor, Alaska · 1967 days ago · 10 km deep · 73 km away
  42. 1.972 km SSE of Unalaska, Alaska · 1959 days ago · 20 km deep · 89 km away

Before

  1. 1.986 km SSW of Unalaska, Alaska · 2017 days ago · 26 km deep · 44 km away
  2. 1.979 km S of Unalaska, Alaska · 2017 days ago · 22 km deep · 56 km away
  3. 2.636 km SE of Unalaska, Alaska · 2019 days ago · 41 km deep · 81 km away
  4. 3.148 km S of Unalaska, Alaska · 2019 days ago · 67 km deep · 45 km away
  5. 1.956 km SE of Unalaska, Alaska · 2020 days ago · 25 km deep · 94 km away
  6. 2.9102 km SSW of Unalaska, Alaska · 2025 days ago · 35 km deep · 67 km away
  7. 2.4136 km S of Unalaska, Alaska · 2026 days ago · 5 km deep · 100 km away
  8. 3.746 km ESE of Nikolski, Alaska · 2026 days ago · 44 km deep · 95 km away
  9. 1.710 km WNW of Dutch Harbor, Alaska · 2033 days ago · 3 km deep · 63 km away
  10. 2.167 km ESE of Nikolski, Alaska · 2033 days ago · 16 km deep · 91 km away
  11. 3.279 km SSW of Unalaska, Alaska · 2034 days ago · 10 km deep · 33 km away
  12. 3.1133 km S of Unalaska, Alaska · 2038 days ago · 29 km deep · 99 km away
  13. 2.7Fox Islands, Aleutian Islands, Alaska · 2038 days ago · 20 km deep · 98 km away
  14. 2.1118 km S of Unalaska, Alaska · 2038 days ago · 6 km deep · 85 km away
  15. 3.374 km SSW of Unalaska, Alaska · 2039 days ago · 35 km deep · 48 km away
  16. 1.984 km S of Unalaska, Alaska · 2039 days ago · 5 km deep · 64 km away
  17. 1.584 km SW of Unalaska, Alaska · 2041 days ago · 14 km deep · 28 km away
  18. 1.831 km E of Nikolski, Alaska · 2043 days ago · 62 km deep · 92 km away
  19. 2.013 km ENE of Dutch Harbor, Alaska · 2045 days ago · 95 km deep · 79 km away
  20. 2.7Fox Islands, Aleutian Islands, Alaska · 2046 days ago · 35 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0213hpig7n. Read Thu, Sep 24, 2026, 4:43 AM UTC.