Alaska earthquakes

M3.4 earthquake 110 km ENE of Atka, Alaska

A magnitude 3.4 earthquake struck 110 km ENE of Atka, Alaska on Sun, Mar 8, 2020, 3:41 AM HADT (12:41 UTC), 223 km (139 mi) below the surface.

A larger quake followed: M3.7 77 km E 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
3.4 (ml), minor
Local time
UTC
2020-03-08 12:41:07 UTC
Depth
223.0 km (138.5 mi), intermediate-depth
Epicenter
52.472° N, 172.647° 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 15.2 km horizontally, 8.2 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
178°
Stations used
42

Nearby

Within 100 km, magnitude 1.5 and up: 21 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.8183 km E of Atka, Alaska · 2394 days ago · 26 km deep · 95 km away
  2. 2.677 km NE of Atka, Alaska · 2394 days ago · 10 km deep · 64 km away
  3. 3.367 km E of Atka, Alaska · 2392 days ago · 195 km deep · 57 km away
  4. 1.718 km ESE of Atka, Alaska · 2389 days ago · 73 km deep · 96 km away
  5. 2.8130 km ESE of Atka, Alaska · 2375 days ago · 35 km deep · 72 km away
  6. 2.832 km ESE of Atka, Alaska · 2369 days ago · 189 km deep · 83 km away
  7. 2.973 km SE of Atka, Alaska · 2368 days ago · 35 km deep · 84 km away
  8. 3.181 km E of Atka, Alaska · 2362 days ago · 106 km deep · 31 km away
  9. 2.965 km ESE of Atka, Alaska · 2360 days ago · 60 km deep · 62 km away
  10. 2.334 km NNE of Atka, Alaska · 2358 days ago · 118 km deep · 90 km away
  11. 3.1174 km E of Atka, Alaska · 2356 days ago · 35 km deep · 73 km away
  12. 1.937 km E of Atka, Alaska · 2351 days ago · 16 km deep · 77 km away
  13. 2.9108 km ESE of Atka, Alaska · 2351 days ago · 35 km deep · 91 km away
  14. 2.633 km NE of Atka, Alaska · 2351 days ago · 179 km deep · 81 km away
  15. 3.261 km ESE of Atka, Alaska · 2350 days ago · 67 km deep · 75 km away
  16. 1.939 km E of Atka, Alaska · 2349 days ago · 81 km deep · 76 km away
  17. 2.7104 km ESE of Atka, Alaska · 2345 days ago · 35 km deep · 83 km away
  18. 1.839 km E of Atka, Alaska · 2343 days ago · 5 km deep · 72 km away
  19. 3.777 km E of Atka, Alaska · 2342 days ago · 150 km deep · 39 km away
  20. 2.242 km ENE of Atka, Alaska · 2342 days ago · 121 km deep · 68 km away
  21. 3.7173 km WSW of Nikolski, Alaska · 2338 days ago · 57 km deep · 91 km away

Before

  1. 3.571 km E of Atka, Alaska · 2412 days ago · 10 km deep · 48 km away
  2. 2.369 km E of Atka, Alaska · 2414 days ago · 100 km deep · 43 km away
  3. 2.7103 km ENE of Atka, Alaska · 2419 days ago · 117 km deep · 7 km away
  4. 2.422 km ESE of Atka, Alaska · 2419 days ago · 170 km deep · 91 km away
  5. 3.094 km E of Atka, Alaska · 2421 days ago · 112 km deep · 45 km away
  6. 2.338 km ESE of Atka, Alaska · 2421 days ago · 6 km deep · 86 km away
  7. 2.335 km ESE of Atka, Alaska · 2421 days ago · 6 km deep · 89 km away
  8. 2.031 km ESE of Atka, Alaska · 2425 days ago · 15 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60008c38 (also filed as ak02034nxn1v). Read Wed, Sep 30, 2026, 11:15 PM UTC.