Alaska earthquakes

M4.2 earthquake 137 km E of Atka, Alaska

A magnitude 4.2 earthquake struck 137 km E of Atka, Alaska on Wed, Mar 10, 2021, 1:37 PM HAST (23:37 UTC), 80 km (50 mi) below the surface.

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The earthquake

Magnitude
4.2 (mb), light
Local time
UTC
2021-03-10 23:37:46 UTC
Depth
79.9 km (49.6 mi), intermediate-depth
Epicenter
52.343° N, 172.199° 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 5.6 km horizontally, 6.3 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
176°
Stations used
66

Nearby

Within 100 km, magnitude 1.5 and up: 28 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.4180 km WSW of Nikolski, Alaska · 2023 days ago · 26 km deep · 59 km away
  2. 3.2121 km NE of Atka, Alaska · 2021 days ago · 195 km deep · 63 km away
  3. 3.8182 km ESE of Atka, Alaska · 2021 days ago · 35 km deep · 79 km away
  4. 3.9112 km ENE of Atka, Alaska · 2019 days ago · 211 km deep · 59 km away
  5. 1.943 km ENE of Atka, Alaska · 2017 days ago · 7 km deep · 96 km away
  6. 2.253 km E of Atka, Alaska · 2011 days ago · 82 km deep · 86 km away
  7. 1.540 km E of Atka, Alaska · 2010 days ago · 13 km deep · 97 km away
  8. 4.276 km ESE of Atka, Alaska · 1996 days ago · 189 km deep · 86 km away
  9. 3.974 km E of Atka, Alaska · 1996 days ago · 6 km deep · 64 km away
  10. 3.174 km E of Atka, Alaska · 1996 days ago · 10 km deep · 63 km away
  11. 1.846 km NE of Atka, Alaska · 1996 days ago · 2 km deep · 100 km away
  12. 2.060 km E of Atka, Alaska · 1996 days ago · 3 km deep · 78 km away
  13. 3.267 km E of Atka, Alaska · 1996 days ago · 12 km deep · 70 km away
  14. 2.163 km ESE of Atka, Alaska · 1995 days ago · 24 km deep · 94 km away
  15. 3.467 km ENE of Atka, Alaska · 1993 days ago · 10 km deep · 71 km away
  16. 2.047 km ESE of Atka, Alaska · 1988 days ago · 65 km deep · 95 km away
  17. 1.654 km E of Atka, Alaska · 1987 days ago · 13 km deep · 84 km away
  18. 3.0160 km WSW of Nikolski, Alaska · 1987 days ago · 60 km deep · 79 km away
  19. 1.863 km E of Atka, Alaska · 1986 days ago · 4 km deep · 74 km away
  20. 2.7178 km WSW of Nikolski, Alaska · 1986 days ago · 35 km deep · 74 km away
  21. 2.5120 km E of Atka, Alaska · 1986 days ago · 102 km deep · 21 km away
  22. 2.8190 km E of Atka, Alaska · 1986 days ago · 35 km deep · 62 km away
  23. 2.9149 km E of Atka, Alaska · 1986 days ago · 35 km deep · 35 km away
  24. 1.861 km E of Atka, Alaska · 1985 days ago · 13 km deep · 78 km away
  25. 3.1153 km E of Atka, Alaska · 1985 days ago · 20 km deep · 45 km away
  26. 2.154 km E of Atka, Alaska · 1980 days ago · 88 km deep · 85 km away
  27. 3.168 km SE of Atka, Alaska · 1980 days ago · 35 km deep · 100 km away
  28. 2.968 km E of Atka, Alaska · 1978 days ago · 223 km deep · 69 km away

Before

  1. 3.3188 km SW of Nikolski, Alaska · 2026 days ago · 36 km deep · 93 km away
  2. 2.958 km ESE of Atka, Alaska · 2027 days ago · 10 km deep · 97 km away
  3. 3.798 km ESE of Atka, Alaska · 2030 days ago · 45 km deep · 60 km away
  4. 2.967 km ESE of Atka, Alaska · 2037 days ago · 54 km deep · 91 km away
  5. 3.6147 km E of Atka, Alaska · 2048 days ago · 34 km deep · 37 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000di00 (also filed as ak02136hzxyd). Read Thu, Sep 24, 2026, 2:15 PM UTC.