Alaska earthquakes

M2.4 earthquake 220 km W of Adak, Alaska

A magnitude 2.4 earthquake struck 220 km W of Adak, Alaska on Sat, Feb 27, 2021, 11:56 AM HAST (21:56 UTC), 67 km (42 mi) below the surface.

A larger quake followed: M4.3 225 km W of Adak, 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
2.4 (ml), micro
Local time
UTC
2021-02-27 21:56:52 UTC
Depth
66.9 km (41.6 mi), shallow
Epicenter
51.968° N, 179.831° 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
29

Nearby

Within 100 km, magnitude 1.5 and up: 29 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 2.2191 km WSW of Adak, Alaska · 2036 days ago · 67 km deep · 76 km away
  2. 1.7176 km W of Adak, Alaska · 2026 days ago · 14 km deep · 50 km away
  3. 2.1179 km WSW of Adak, Alaska · 2026 days ago · 20 km deep · 93 km away
  4. 3.3190 km WSW of Adak, Alaska · 2026 days ago · 68 km deep · 62 km away
  5. 4.3225 km W of Adak, Alaska · 2025 days ago · 158 km deep · 5 km away
  6. 1.5133 km W of Adak, Alaska · 2025 days ago · 7 km deep · 95 km away
  7. 3.3Andreanof Islands, Aleutian Islands, Alaska · 2022 days ago · 35 km deep · 87 km away
  8. 2.2188 km WSW of Adak, Alaska · 2019 days ago · 6 km deep · 90 km away
  9. 3.1224 km W of Adak, Alaska · 2015 days ago · 128 km deep · 23 km away
  10. 2.2151 km WSW of Adak, Alaska · 2014 days ago · 17 km deep · 93 km away
  11. 1.9148 km WSW of Adak, Alaska · 2013 days ago · 30 km deep · 90 km away
  12. 3.5237 km W of Adak, Alaska · 2012 days ago · 90 km deep · 42 km away
  13. 3.9224 km WSW of Adak, Alaska · 2007 days ago · 51 km deep · 69 km away
  14. 3.0144 km W of Adak, Alaska · 2002 days ago · 183 km deep · 76 km away
  15. 2.2203 km WSW of Adak, AK · 2001 days ago · 66 km deep · 64 km away
  16. 2.7212 km WSW of Adak, Alaska · 1999 days ago · 113 km deep · 50 km away
  17. 3.3229 km WSW of Adak, Alaska · 1996 days ago · 56 km deep · 52 km away
  18. 3.7261 km W of Adak, Alaska · 1989 days ago · 35 km deep · 45 km away
  19. 1.7135 km W of Adak, Alaska · 1988 days ago · 19 km deep · 86 km away
  20. 2.4252 km W of Adak, Alaska · 1987 days ago · 71 km deep · 33 km away
  21. 1.5134 km W of Adak, Alaska · 1986 days ago · 6 km deep · 93 km away
  22. 1.6169 km WSW of Adak, Alaska · 1986 days ago · 32 km deep · 82 km away
  23. 2.0192 km WSW of Adak, Alaska · 1984 days ago · 18 km deep · 86 km away
  24. 1.9165 km WSW of Adak, Alaska · 1983 days ago · 16 km deep · 76 km away
  25. 2.8268 km WSW of Adak, Alaska · 1983 days ago · 18 km deep · 91 km away
  26. 1.7176 km WSW of Adak, Alaska · 1982 days ago · 69 km deep · 100 km away
  27. 3.7248 km WSW of Adak, Alaska · 1978 days ago · 58 km deep · 58 km away
  28. 1.8166 km W of Adak, Alaska · 1978 days ago · 11 km deep · 59 km away
  29. 2.2145 km W of Adak, Alaska · 1978 days ago · 165 km deep · 84 km away

Before

  1. 3.7255 km W of Adak, Alaska · 2038 days ago · 83 km deep · 52 km away
  2. 1.9170 km W of Adak, Alaska · 2041 days ago · 5 km deep · 55 km away
  3. 3.1267 km W of Adak, Alaska · 2043 days ago · 35 km deep · 67 km away
  4. 3.0235 km W of Adak, Alaska · 2044 days ago · 172 km deep · 29 km away
  5. 1.8179 km WSW of Adak, Alaska · 2044 days ago · 13 km deep · 95 km away
  6. 2.5193 km WSW of Adak, Alaska · 2046 days ago · 27 km deep · 91 km away
  7. 3.5173 km WSW of Adak, Alaska · 2049 days ago · 10 km deep · 70 km away
  8. 3.3Andreanof Islands, Aleutian Islands, Alaska · 2050 days ago · 35 km deep · 85 km away
  9. 4.8184 km WSW of Adak, Alaska · 2050 days ago · 23 km deep · 72 km away
  10. 4.1265 km W of Adak, Alaska · 2052 days ago · 175 km deep · 48 km away
  11. 1.9149 km WSW of Adak, Alaska · 2060 days ago · 10 km deep · 99 km away
  12. 1.9178 km WSW of Adak, Alaska · 2063 days ago · 1 km deep · 67 km away
  13. 2.7243 km WSW of Adak, Alaska · 2065 days ago · 21 km deep · 99 km away
  14. 2.1131 km W of Adak, Alaska · 2066 days ago · 115 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0212oa0cj5. Read Sat, Sep 26, 2026, 2:11 PM UTC.