Alaska earthquakes

M3.4 earthquake 134 km SW of Nikolski, Alaska

A magnitude 3.4 earthquake struck 134 km SW of Nikolski, Alaska on Sat, Apr 10, 2021, 9:54 AM HADT (18:54 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M4.9 128 km WSW of Nikolski, Alaska. This one was a foreshock.

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The earthquake

Magnitude
3.4 (ml), minor
Local time
UTC
2021-04-10 18:54:12 UTC
Depth
21.8 km (13.6 mi), shallow
Epicenter
52.144° N, 170.356° 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 8.0 km horizontally, 8.8 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
205°, poorly surrounded by stations
Stations used
33

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 21 in the 30 days before it.

After

  1. 3.0160 km WSW of Nikolski, Alaska · 1990 days ago · 60 km deep · 52 km away
  2. 2.5136 km SW of Nikolski, Alaska · 1989 days ago · 35 km deep · 8 km away
  3. 2.7178 km WSW of Nikolski, Alaska · 1989 days ago · 35 km deep · 55 km away
  4. 2.7221 km SW of Nikolski, Alaska · 1989 days ago · 22 km deep · 93 km away
  5. 2.8190 km E of Atka, Alaska · 1989 days ago · 35 km deep · 74 km away
  6. 4.9128 km WSW of Nikolski, Alaska · 1972 days ago · 54 km deep · 32 km away
  7. 3.8189 km ESE of Atka, Alaska · 1963 days ago · 38 km deep · 85 km away
  8. 3.2163 km E of Atka, Alaska · 1958 days ago · 28 km deep · 100 km away
  9. 3.4203 km SSW of Nikolski, Alaska · 1955 days ago · 10 km deep · 82 km away
  10. 3.8154 km SW of Nikolski, Alaska · 1953 days ago · 35 km deep · 20 km away
  11. 3.8100 km SSW of Nikolski, Alaska · 1947 days ago · 34 km deep · 60 km away
  12. 3.6115 km SW of Nikolski, Alaska · 1947 days ago · 22 km deep · 20 km away

Before

  1. 3.976 km SW of Nikolski, Alaska · 1998 days ago · 35 km deep · 62 km away
  2. 4.849 km SSW of Nikolski, Alaska · 1999 days ago · 42 km deep · 93 km away · felt by 4
  3. 3.6126 km SSW of Nikolski, Alaska · 2002 days ago · 22 km deep · 69 km away
  4. 2.581 km SW of Nikolski, Alaska · 2002 days ago · 35 km deep · 54 km away
  5. 2.142 km WSW of Nikolski, Alaska · 2003 days ago · 16 km deep · 93 km away
  6. 3.381 km WSW of Nikolski, Alaska · 2007 days ago · 8 km deep · 74 km away
  7. 3.244 km WSW of Nikolski, Alaska · 2009 days ago · 31 km deep · 92 km away
  8. 3.375 km WSW of Nikolski, Alaska · 2010 days ago · 10 km deep · 77 km away
  9. 3.266 km WSW of Nikolski, Alaska · 2011 days ago · 10 km deep · 77 km away
  10. 2.965 km W of Nikolski, Alaska · 2011 days ago · 10 km deep · 87 km away
  11. 3.6164 km SW of Nikolski, Alaska · 2011 days ago · 37 km deep · 30 km away
  12. 3.568 km W of Nikolski, Alaska · 2011 days ago · 3 km deep · 89 km away
  13. 2.370 km WSW of Nikolski, Alaska · 2011 days ago · 7 km deep · 75 km away
  14. 3.5Fox Islands, Aleutian Islands, Alaska · 2011 days ago · 9 km deep · 84 km away
  15. 3.766 km WSW of Nikolski, Alaska · 2011 days ago · 10 km deep · 84 km away
  16. 4.872 km WSW of Nikolski, Alaska · 2011 days ago · 12 km deep · 77 km away
  17. 2.9119 km WSW of Nikolski, Alaska · 2013 days ago · 117 km deep · 66 km away
  18. 2.5Fox Islands, Aleutian Islands, Alaska · 2013 days ago · 30 km deep · 68 km away
  19. 3.1105 km WSW of Nikolski, Alaska · 2020 days ago · 137 km deep · 68 km away
  20. 2.164 km SW of Nikolski, Alaska · 2025 days ago · 51 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000e056 (also filed as ak0214los46l). Read Sun, Sep 27, 2026, 2:09 PM UTC.