Alaska earthquakes

M2.2 earthquake 187 km SSW of Atka, Alaska

A magnitude 2.2 earthquake struck 187 km SSW of Atka, Alaska on Sun, Aug 29, 2021, 9:45 AM HADT (18:45 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M3.0 135 km SSW 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
2.2 (ml), micro
Local time
UTC
2021-08-29 18:45:50 UTC
Depth
23.6 km (14.7 mi), shallow
Epicenter
50.555° N, 174.831° 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.

Stations used
33

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 2.1178 km S of Atka, Alaska · 1854 days ago · 7 km deep · 69 km away
  2. 2.7188 km S of Atka, Alaska · 1853 days ago · 10 km deep · 60 km away
  3. 2.8182 km SE of Adak, Alaska · 1850 days ago · 29 km deep · 19 km away
  4. 1.7109 km S of Atka, Alaska · 1845 days ago · 24 km deep · 86 km away
  5. 2.9183 km SSE of Atka, Alaska · 1838 days ago · 21 km deep · 99 km away
  6. 3.0135 km SSW of Atka, Alaska · 1836 days ago · 14 km deep · 56 km away
  7. 2.191 km S of Atka, Alaska · 1821 days ago · 4 km deep · 96 km away
  8. 2.995 km S of Atka, Alaska · 1813 days ago · 17 km deep · 94 km away
  9. 2.4177 km SSE of Adak, Alaska · 1810 days ago · 13 km deep · 31 km away

Before

  1. 1.9170 km SE of Adak, Alaska · 1858 days ago · 10 km deep · 25 km away
  2. 2.1165 km SSE of Atka, Alaska · 1859 days ago · 11 km deep · 88 km away
  3. 2.2103 km S of Atka, Alaska · 1865 days ago · 29 km deep · 94 km away
  4. 2.0193 km S of Atka, Alaska · 1866 days ago · 10 km deep · 80 km away
  5. 1.6116 km SSW of Atka, Alaska · 1872 days ago · 19 km deep · 73 km away
  6. 2.0199 km S of Atka, Alaska · 1873 days ago · 9 km deep · 57 km away
  7. 2.0112 km SSW of Atka, Alaska · 1876 days ago · 12 km deep · 79 km away
  8. 3.9111 km SSW of Atka, Alaska · 1876 days ago · 27 km deep · 80 km away
  9. 1.6101 km SSE of Adak, Alaska · 1876 days ago · 24 km deep · 97 km away
  10. 2.6112 km SSW of Atka, Alaska · 1876 days ago · 11 km deep · 79 km away
  11. 3.6112 km SSW of Atka, Alaska · 1876 days ago · 11 km deep · 78 km away
  12. 2.0120 km SSW of Atka, Alaska · 1877 days ago · 21 km deep · 84 km away
  13. 1.9123 km SSW of Atka, Alaska · 1877 days ago · 26 km deep · 80 km away
  14. 2.2173 km SSE of Atka, Alaska · 1881 days ago · 11 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021b2vi6zv. Read Sun, Sep 27, 2026, 2:46 PM UTC.