Alaska earthquakes

M4.2 earthquake 94 km NE of Atka, Alaska

A magnitude 4.2 earthquake struck 94 km NE of Atka, Alaska on Thu, Apr 8, 2021, 6:02 AM HADT (15:02 UTC), 221 km (137 mi) below the surface.

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The earthquake

Magnitude
4.2 (mb), light
Local time
UTC
2021-04-08 15:02:47 UTC
Depth
220.9 km (137.3 mi), intermediate-depth
Epicenter
52.885° N, 173.396° 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 7.3 km horizontally, 7.0 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
123°
Stations used
147

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 3.467 km ENE of Atka, Alaska · 1992 days ago · 10 km deep · 61 km away
  2. 3.629 km NE of Atka, AK · 1990 days ago · 174 km deep · 67 km away
  3. 2.047 km ESE of Atka, Alaska · 1987 days ago · 65 km deep · 90 km away
  4. 1.654 km E of Atka, Alaska · 1987 days ago · 13 km deep · 79 km away
  5. 3.646 km N of Atka, Alaska · 1986 days ago · 192 km deep · 65 km away
  6. 1.863 km E of Atka, Alaska · 1986 days ago · 4 km deep · 66 km away
  7. 2.5120 km E of Atka, Alaska · 1986 days ago · 102 km deep · 97 km away
  8. 1.861 km E of Atka, Alaska · 1985 days ago · 13 km deep · 79 km away
  9. 3.9Andreanof Islands, Aleutian Islands, Alaska · 1984 days ago · 221 km deep · 92 km away
  10. 2.220 km E of Atka, Alaska · 1981 days ago · 115 km deep · 81 km away
  11. 3.0Andreanof Islands, Aleutian Islands, Alaska · 1981 days ago · 192 km deep · 95 km away
  12. 2.237 km ESE of Atka, Alaska · 1980 days ago · 153 km deep · 89 km away
  13. 2.154 km E of Atka, Alaska · 1980 days ago · 88 km deep · 81 km away
  14. 2.120 km ESE of Atka, Alaska · 1980 days ago · 146 km deep · 90 km away
  15. 2.968 km E of Atka, Alaska · 1978 days ago · 223 km deep · 65 km away
  16. 2.991 km N of Atka, Alaska · 1961 days ago · 155 km deep · 61 km away
  17. 4.245 km E of Atka, Alaska · 1943 days ago · 148 km deep · 76 km away

Before

  1. 3.9Andreanof Islands, Aleutian Islands, Alaska · 1995 days ago · 221 km deep · 93 km away
  2. 3.267 km E of Atka, Alaska · 1995 days ago · 12 km deep · 68 km away
  3. 2.060 km E of Atka, Alaska · 1995 days ago · 3 km deep · 65 km away
  4. 1.846 km NE of Atka, Alaska · 1995 days ago · 2 km deep · 52 km away
  5. 3.174 km E of Atka, Alaska · 1995 days ago · 10 km deep · 69 km away
  6. 3.974 km E of Atka, Alaska · 1995 days ago · 6 km deep · 75 km away
  7. 1.540 km E of Atka, Alaska · 2009 days ago · 13 km deep · 76 km away
  8. 2.253 km E of Atka, Alaska · 2010 days ago · 82 km deep · 83 km away
  9. 2.210 km NNW of Atka, Alaska · 2014 days ago · 114 km deep · 90 km away
  10. 1.943 km ENE of Atka, Alaska · 2016 days ago · 7 km deep · 62 km away
  11. 2.427 km E of Atka, Alaska · 2017 days ago · 124 km deep · 84 km away
  12. 3.9112 km ENE of Atka, Alaska · 2018 days ago · 211 km deep · 44 km away
  13. 3.2121 km NE of Atka, Alaska · 2021 days ago · 195 km deep · 46 km away
  14. 2.712 km WNW of Atka, Alaska · 2022 days ago · 186 km deep · 96 km away
  15. 2.223 km ESE of Atka, Alaska · 2023 days ago · 104 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000e005 (also filed as ak0214ibm5qu). Read Thu, Sep 24, 2026, 7:03 AM UTC.