Alaska earthquakes

M3.3 earthquake 271 km SE of Chiniak, Alaska

A magnitude 3.3 earthquake struck 271 km SE of Chiniak, Alaska on Mon, Jun 21, 2021, 10:24 PM AKDT (06:24 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.0 269 km SE of Chiniak, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.3 (ml), minor
Local time
UTC
2021-06-22 06:24:47 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
56.287° N, 148.535° 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 4.7 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.05
Depth from
Operator assigned
Station coverage gap
235°, poorly surrounded by stations
Stations used
26

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 3.5246 km SE of Chiniak, Alaska · 1920 days ago · 20 km deep · 50 km away
  2. 2.8286 km SE of Chiniak, Alaska · 1918 days ago · 10 km deep · 72 km away
  3. 2.5215 km SE of Chiniak, Alaska · 1918 days ago · 10 km deep · 88 km away
  4. 2.1240 km ESE of Chiniak, Alaska · 1918 days ago · 4 km deep · 60 km away
  5. 3.6259 km ESE of Chiniak, Alaska · 1907 days ago · 10 km deep · 14 km away
  6. 2.7250 km ESE of Chiniak, Alaska · 1907 days ago · 21 km deep · 28 km away
  7. 3.9261 km SE of Chiniak, Alaska · 1905 days ago · 10 km deep · 47 km away
  8. 2.9246 km SE of Chiniak, Alaska · 1904 days ago · 12 km deep · 29 km away
  9. 2.7235 km SE of Chiniak, Alaska · 1903 days ago · 12 km deep · 54 km away
  10. 4.0269 km SE of Chiniak, Alaska · 1900 days ago · 10 km deep · 2 km away
  11. 3.9262 km ESE of Chiniak, Alaska · 1900 days ago · 10 km deep · 16 km away
  12. 2.7261 km ESE of Chiniak, Alaska · 1900 days ago · 12 km deep · 13 km away
  13. 4.0250 km ESE of Chiniak, Alaska · 1900 days ago · 17 km deep · 25 km away
  14. 2.3246 km ESE of Chiniak, Alaska · 1899 days ago · 10 km deep · 34 km away
  15. 3.1250 km ESE of Chiniak, Alaska · 1899 days ago · 10 km deep · 30 km away
  16. 2.6257 km ESE of Chiniak, Alaska · 1899 days ago · 12 km deep · 18 km away
  17. 3.1271 km SE of Chiniak, Alaska · 1899 days ago · 10 km deep · 3 km away
  18. 2.3244 km SE of Chiniak, Alaska · 1899 days ago · 10 km deep · 43 km away
  19. 2.6240 km SE of Chiniak, Alaska · 1899 days ago · 11 km deep · 42 km away
  20. 2.5251 km SE of Chiniak, Alaska · 1898 days ago · 3 km deep · 20 km away
  21. 2.5247 km ESE of Chiniak, Alaska · 1898 days ago · 10 km deep · 24 km away
  22. 2.2235 km SE of Chiniak, Alaska · 1898 days ago · 3 km deep · 36 km away
  23. 2.2248 km ESE of Chiniak, Alaska · 1897 days ago · 10 km deep · 31 km away
  24. 3.2292 km SE of Chiniak, Alaska · 1896 days ago · 10 km deep · 27 km away
  25. 2.8260 km ESE of Chiniak, Alaska · 1896 days ago · 22 km deep · 12 km away · felt by 1
  26. 3.1269 km SE of Chiniak, Alaska · 1896 days ago · 10 km deep · 2 km away
  27. 3.0258 km ESE of Chiniak, Alaska · 1896 days ago · 10 km deep · 15 km away
  28. 2.5280 km SE of Chiniak, Alaska · 1891 days ago · 10 km deep · 9 km away
  29. 2.9220 km SE of Chiniak, Alaska · 1889 days ago · 10 km deep · 65 km away
  30. 3.8256 km SE of Chiniak, Alaska · 1889 days ago · 20 km deep · 54 km away
  31. 3.1266 km ESE of Chiniak, Alaska · 1888 days ago · 10 km deep · 19 km away
  32. 2.9257 km ESE of Chiniak, Alaska · 1888 days ago · 10 km deep · 17 km away
  33. 2.2239 km SE of Chiniak, Alaska · 1886 days ago · 10 km deep · 32 km away
  34. 2.8212 km SE of Chiniak, Alaska · 1883 days ago · 10 km deep · 89 km away
  35. 3.0225 km SE of Chiniak, Alaska · 1883 days ago · 10 km deep · 53 km away
  36. 2.7259 km ESE of Chiniak, Alaska · 1882 days ago · 10 km deep · 30 km away
  37. 3.5229 km SE of Chiniak, Alaska · 1872 days ago · 10 km deep · 82 km away
  38. 3.1217 km SE of Chiniak, Alaska · 1871 days ago · 10 km deep · 81 km away · felt by 1
  39. 3.0266 km SE of Chiniak, Alaska · 1865 days ago · 7 km deep · 74 km away

Before

  1. 3.5235 km SE of Chiniak, Alaska · 1929 days ago · 21 km deep · 43 km away
  2. 2.8236 km SE of Chiniak, Alaska · 1931 days ago · 10 km deep · 64 km away
  3. 2.9260 km SE of Chiniak, Alaska · 1933 days ago · 10 km deep · 11 km away
  4. 3.1264 km SE of Chiniak, Alaska · 1933 days ago · 10 km deep · 10 km away
  5. 2.8238 km ESE of Chiniak, Alaska · 1934 days ago · 21 km deep · 33 km away
  6. 3.9263 km SE of Chiniak, Alaska · 1935 days ago · 7 km deep · 54 km away · felt by 1
  7. 3.5256 km SE of Chiniak, Alaska · 1935 days ago · 10 km deep · 51 km away
  8. 2.9231 km SE of Chiniak, Alaska · 1936 days ago · 10 km deep · 48 km away
  9. 4.1267 km ESE of Chiniak, Alaska · 1937 days ago · 10 km deep · 20 km away
  10. 3.2222 km SE of Chiniak, Alaska · 1939 days ago · 21 km deep · 82 km away
  11. 3.0227 km SE of Chiniak, Alaska · 1944 days ago · 10 km deep · 74 km away
  12. 2.8253 km ESE of Chiniak, Alaska · 1946 days ago · 10 km deep · 29 km away
  13. 2.9235 km SE of Chiniak, Alaska · 1950 days ago · 10 km deep · 68 km away
  14. 2.7238 km SE of Chiniak, Alaska · 1953 days ago · 22 km deep · 40 km away
  15. 2.9207 km SE of Chiniak, Alaska · 1954 days ago · 20 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000ef4s. Read Mon, Sep 28, 2026, 7:38 AM UTC.