Alaska earthquakes

M3.0 earthquake 205 km SSE of Atka, Alaska

A magnitude 3.0 earthquake struck 205 km SSE of Atka, Alaska on Tue, Aug 10, 2021, 2:06 AM HADT (11:06 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.3 200 km SSE 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
3.0 (ml), minor
Local time
UTC
2021-08-10 11:06:57 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.431° N, 173.353° 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 7.2 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
246°, poorly surrounded by stations
Stations used
20

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 26 in the 30 days before it.

After

  1. 2.0199 km S of Atka, Alaska · 1870 days ago · 9 km deep · 50 km away
  2. 2.2187 km SE of Atka, Alaska · 1869 days ago · 3 km deep · 75 km away
  3. 2.6211 km SSE of Atka, Alaska · 1867 days ago · 10 km deep · 44 km away
  4. 3.3200 km SSE of Atka, Alaska · 1866 days ago · 10 km deep · 5 km away
  5. 2.0193 km S of Atka, Alaska · 1863 days ago · 10 km deep · 26 km away
  6. 2.8197 km SE of Atka, Alaska · 1861 days ago · 10 km deep · 69 km away
  7. 2.9178 km SE of Atka, Alaska · 1860 days ago · 10 km deep · 93 km away
  8. 2.0163 km SE of Atka, Alaska · 1858 days ago · 20 km deep · 87 km away
  9. 2.1165 km SSE of Atka, Alaska · 1855 days ago · 11 km deep · 41 km away
  10. 2.1178 km S of Atka, Alaska · 1851 days ago · 7 km deep · 41 km away
  11. 2.7188 km S of Atka, Alaska · 1850 days ago · 10 km deep · 46 km away
  12. 2.2180 km SSE of Atka, Alaska · 1847 days ago · 22 km deep · 37 km away
  13. 2.9183 km SSE of Atka, Alaska · 1835 days ago · 21 km deep · 22 km away

Before

  1. 2.7173 km SSE of Atka, Alaska · 1873 days ago · 22 km deep · 48 km away
  2. 2.9152 km SSE of Atka, Alaska · 1873 days ago · 10 km deep · 54 km away
  3. 3.0171 km SSE of Atka, Alaska · 1876 days ago · 17 km deep · 43 km away
  4. 2.3161 km SSE of Atka, Alaska · 1876 days ago · 7 km deep · 48 km away
  5. 3.0186 km SSE of Atka, Alaska · 1876 days ago · 10 km deep · 31 km away
  6. 3.1200 km SSE of Atka, Alaska · 1876 days ago · 30 km deep · 33 km away
  7. 2.2155 km SSE of Atka, Alaska · 1876 days ago · 1 km deep · 51 km away
  8. 2.2150 km SSE of Atka, Alaska · 1876 days ago · 15 km deep · 60 km away
  9. 2.3165 km SSE of Atka, Alaska · 1876 days ago · 9 km deep · 43 km away
  10. 1.7160 km SSE of Atka, Alaska · 1876 days ago · 3 km deep · 48 km away
  11. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1876 days ago · 10 km deep · 43 km away
  12. 2.7187 km SSE of Atka, Alaska · 1876 days ago · 10 km deep · 43 km away
  13. 1.5189 km SSE of Atka, Alaska · 1877 days ago · 8 km deep · 43 km away
  14. 2.1165 km SSE of Atka, Alaska · 1877 days ago · 10 km deep · 44 km away
  15. 3.2132 km SE of Atka, Alaska · 1877 days ago · 10 km deep · 94 km away
  16. 2.2173 km SSE of Atka, Alaska · 1878 days ago · 11 km deep · 35 km away
  17. 2.7173 km SSE of Atka, Alaska · 1878 days ago · 10 km deep · 37 km away
  18. 3.8181 km SSE of Atka, Alaska · 1878 days ago · 10 km deep · 52 km away
  19. 3.0162 km SSE of Atka, Alaska · 1879 days ago · 6 km deep · 45 km away
  20. 3.1186 km SSE of Atka, Alaska · 1880 days ago · 30 km deep · 40 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000f8gn (also filed as ak021a7bwc9i). Read Thu, Sep 24, 2026, 8:37 AM UTC.