Alaska earthquakes

M2.1 earthquake 91 km SSE of Ugashik, Alaska

A magnitude 2.1 earthquake struck 91 km SSE of Ugashik, Alaska on Tue, Apr 20, 2021, 5:53 PM AKDT (01:53 UTC), 77 km (48 mi) below the surface.

A larger quake followed: M3.4 105 km ENE of Chignik, 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
2.1 (ml), micro
Local time
UTC
2021-04-21 01:53:28 UTC
Depth
77.3 km (48.0 mi), intermediate-depth
Epicenter
56.736° N, 156.911° 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
30

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 24 in the 30 days before it.

After

  1. 2.4139 km E of Chignik, Alaska · 1984 days ago · 70 km deep · 77 km away
  2. 2.295 km WSW of Karluk, Alaska · 1981 days ago · 61 km deep · 81 km away
  3. 1.783 km WSW of Karluk, Alaska · 1979 days ago · 26 km deep · 92 km away
  4. 2.6132 km ESE of Chignik, Alaska · 1976 days ago · 59 km deep · 83 km away
  5. 2.773 km W of Akhiok, Alaska · 1975 days ago · 56 km deep · 95 km away
  6. 2.151 km SSE of Ugashik, Alaska · 1975 days ago · 90 km deep · 40 km away
  7. 3.319 km ESE of Chignik, Alaska · 1970 days ago · 96 km deep · 92 km away
  8. 2.331 km E of Chignik, Alaska · 1968 days ago · 92 km deep · 77 km away
  9. 1.8Alaska Peninsula · 1966 days ago · 12 km deep · 18 km away
  10. 2.558 km ESE of Chignik, Alaska · 1965 days ago · 45 km deep · 86 km away
  11. 1.873 km SE of Ugashik, Alaska · 1963 days ago · 69 km deep · 49 km away
  12. 1.686 km SSE of Ugashik, Alaska · 1956 days ago · 71 km deep · 9 km away
  13. 2.633 km ENE of Port Heiden, Alaska · 1954 days ago · 141 km deep · 81 km away
  14. 1.889 km SE of Ugashik, Alaska · 1951 days ago · 0 km deep · 50 km away
  15. 2.244 km E of Ugashik, Alaska · 1944 days ago · 119 km deep · 85 km away
  16. 3.4105 km ENE of Chignik, Alaska · 1943 days ago · 82 km deep · 29 km away · felt by 1
  17. 2.8104 km WSW of Akhiok, Alaska · 1943 days ago · 10 km deep · 71 km away
  18. 2.084 km SSE of Ugashik, Alaska · 1942 days ago · 89 km deep · 11 km away
  19. 1.770 km ENE of Chignik, Alaska · 1935 days ago · 60 km deep · 35 km away
  20. 2.197 km SE of Ugashik, Alaska · 1932 days ago · 35 km deep · 36 km away
  21. 2.577 km SE of Chignik, Alaska · 1930 days ago · 20 km deep · 98 km away
  22. 2.882 km ENE of Chignik, Alaska · 1929 days ago · 55 km deep · 23 km away

Before

  1. 2.249 km SE of Ugashik, Alaska · 1989 days ago · 107 km deep · 48 km away
  2. 2.7114 km E of Chignik, Alaska · 1990 days ago · 35 km deep · 67 km away
  3. 2.879 km WNW of Akhiok, Alaska · 1992 days ago · 53 km deep · 97 km away
  4. 2.272 km W of Akhiok, Alaska · 1994 days ago · 59 km deep · 96 km away
  5. 2.561 km ESE of Chignik, Alaska · 1996 days ago · 55 km deep · 83 km away
  6. 2.6114 km E of Chignik, Alaska · 1996 days ago · 51 km deep · 59 km away
  7. 2.7101 km SE of Ugashik, Alaska · 1997 days ago · 57 km deep · 32 km away
  8. 2.3100 km W of Akhiok, Alaska · 1998 days ago · 7 km deep · 72 km away
  9. 2.127 km E of Chignik, Alaska · 1999 days ago · 62 km deep · 82 km away
  10. 2.378 km E of Chignik, Alaska · 1999 days ago · 23 km deep · 64 km away
  11. 2.4106 km E of Chignik, Alaska · 1999 days ago · 37 km deep · 64 km away
  12. 1.9115 km SE of Ugashik, Alaska · 1999 days ago · 20 km deep · 52 km away
  13. 2.240 km E of Ugashik, Alaska · 2000 days ago · 138 km deep · 90 km away
  14. 2.038 km SSE of Ugashik, Alaska · 2001 days ago · 14 km deep · 53 km away
  15. 2.586 km SE of Ugashik, Alaska · 2002 days ago · 67 km deep · 35 km away
  16. 2.123 km SE of Ugashik, Alaska · 2006 days ago · 117 km deep · 73 km away
  17. 2.534 km ENE of Chignik, Alaska · 2006 days ago · 65 km deep · 70 km away
  18. 2.127 km SSE of Ugashik, Alaska · 2008 days ago · 6 km deep · 65 km away
  19. 2.630 km NE of Chignik, Alaska · 2008 days ago · 77 km deep · 78 km away
  20. 2.084 km W of Akhiok, Alaska · 2012 days ago · 47 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak02153lkdka. Read Wed, Sep 30, 2026, 3:50 PM UTC.