Alaska earthquakes

M3.6 earthquake 147 km E of Atka, Alaska

A magnitude 3.6 earthquake struck 147 km E of Atka, Alaska on Sun, Feb 14, 2021, 4:46 AM HAST (14:46 UTC), 34 km (21 mi) below the surface.

A larger quake followed: M3.7 98 km ESE of Atka, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.6 (ml), minor
Local time
UTC
2021-02-14 14:46:37 UTC
Depth
33.6 km (20.9 mi), shallow
Epicenter
52.020° N, 172.073° 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 6.0 km horizontally, 7.3 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
205°, poorly surrounded by stations
Stations used
23

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 3.070 km SE of Atka, Alaska · 2048 days ago · 35 km deep · 98 km away
  2. 2.6107 km SE of Atka, Alaska · 2042 days ago · 35 km deep · 87 km away
  3. 3.3129 km SE of Atka, Alaska · 2040 days ago · 35 km deep · 78 km away
  4. 2.967 km ESE of Atka, Alaska · 2036 days ago · 54 km deep · 87 km away
  5. 3.798 km ESE of Atka, Alaska · 2029 days ago · 45 km deep · 51 km away
  6. 3.6155 km SE of Atka, Alaska · 2027 days ago · 23 km deep · 82 km away
  7. 2.958 km ESE of Atka, Alaska · 2027 days ago · 10 km deep · 95 km away
  8. 3.3188 km SW of Nikolski, Alaska · 2026 days ago · 36 km deep · 71 km away
  9. 4.2137 km E of Atka, Alaska · 2023 days ago · 80 km deep · 37 km away
  10. 2.4180 km WSW of Nikolski, Alaska · 2022 days ago · 26 km deep · 61 km away
  11. 3.2121 km NE of Atka, Alaska · 2021 days ago · 195 km deep · 99 km away
  12. 3.8182 km ESE of Atka, Alaska · 2021 days ago · 35 km deep · 45 km away
  13. 3.9112 km ENE of Atka, Alaska · 2018 days ago · 211 km deep · 93 km away
  14. 2.990 km SE of Atka, Alaska · 2014 days ago · 35 km deep · 90 km away
  15. 2.9177 km SE of Atka, Alaska · 2012 days ago · 25 km deep · 97 km away
  16. 2.253 km E of Atka, Alaska · 2010 days ago · 82 km deep · 93 km away
  17. 3.6164 km SW of Nikolski, Alaska · 2007 days ago · 37 km deep · 96 km away
  18. 4.276 km ESE of Atka, Alaska · 1996 days ago · 189 km deep · 79 km away
  19. 3.974 km E of Atka, Alaska · 1995 days ago · 6 km deep · 75 km away
  20. 3.174 km E of Atka, Alaska · 1995 days ago · 10 km deep · 78 km away
  21. 2.060 km E of Atka, Alaska · 1995 days ago · 3 km deep · 92 km away
  22. 3.267 km E of Atka, Alaska · 1995 days ago · 12 km deep · 84 km away
  23. 2.163 km ESE of Atka, Alaska · 1995 days ago · 24 km deep · 91 km away
  24. 2.7139 km SE of Atka, Alaska · 1993 days ago · 10 km deep · 81 km away
  25. 3.467 km ENE of Atka, Alaska · 1992 days ago · 10 km deep · 88 km away

Before

  1. 3.3153 km SW of Nikolski, Alaska · 2048 days ago · 35 km deep · 94 km away
  2. 2.7178 km WSW of Nikolski, Alaska · 2060 days ago · 35 km deep · 64 km away
  3. 1.972 km ESE of Atka, Alaska · 2071 days ago · 34 km deep · 79 km away
  4. 3.2171 km SW of Nikolski, Alaska · 2077 days ago · 35 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000den1 (also filed as ak02122nsngr). Read Thu, Sep 24, 2026, 4:08 AM UTC.