Alaska earthquakes

M3.7 earthquake 174 km SE of Adak, Alaska

A magnitude 3.7 earthquake struck 174 km SE of Adak, Alaska on Sun, May 23, 2021, 9:54 PM HADT (06:54 UTC), 10 km (6 mi) below the surface.

More in Alaska

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
3.7 (mb), minor
Local time
UTC
2021-05-24 06:54:04 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.669° N, 175.033° 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 6.7 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.08
Depth from
Operator assigned
Station coverage gap
205°, poorly surrounded by stations
Stations used
52

Nearby

Within 100 km, magnitude 1.5 and up: 28 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.2170 km S of Adak, Alaska · 1943 days ago · 12 km deep · 93 km away
  2. 2.4118 km SSE of Atka, Alaska · 1943 days ago · 37 km deep · 99 km away
  3. 2.6163 km S of Atka, Alaska · 1938 days ago · 27 km deep · 56 km away
  4. 3.2Andreanof Islands, Aleutian Islands, Alaska · 1933 days ago · 35 km deep · 92 km away
  5. 2.193 km SW of Atka, Alaska · 1927 days ago · 24 km deep · 94 km away
  6. 1.9105 km SSW of Atka, Alaska · 1925 days ago · 64 km deep · 82 km away
  7. 2.4135 km SSE of Atka, Alaska · 1915 days ago · 32 km deep · 95 km away
  8. 2.075 km SE of Adak, Alaska · 1915 days ago · 26 km deep · 100 km away
  9. 2.2146 km S of Atka, Alaska · 1914 days ago · 34 km deep · 79 km away
  10. 3.2103 km ESE of Adak, Alaska · 1912 days ago · 35 km deep · 94 km away
  11. 3.0210 km S of Atka, Alaska · 1911 days ago · 32 km deep · 79 km away
  12. 3.099 km SW of Atka, Alaska · 1910 days ago · 24 km deep · 94 km away
  13. 3.085 km SSE of Adak, Alaska · 1909 days ago · 10 km deep · 91 km away
  14. 2.282 km SE of Adak, Alaska · 1904 days ago · 26 km deep · 98 km away
  15. 1.8111 km SSW of Atka, Alaska · 1903 days ago · 26 km deep · 72 km away
  16. 2.498 km SSW of Atka, Alaska · 1903 days ago · 28 km deep · 82 km away
  17. 2.297 km SSW of Atka, Alaska · 1903 days ago · 25 km deep · 82 km away
  18. 2.1110 km SE of Adak, Alaska · 1902 days ago · 13 km deep · 65 km away
  19. 1.9107 km S of Atka, Alaska · 1901 days ago · 29 km deep · 79 km away
  20. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1900 days ago · 33 km deep · 65 km away
  21. 1.596 km SE of Adak, Alaska · 1899 days ago · 6 km deep · 82 km away
  22. 1.782 km SE of Adak, Alaska · 1899 days ago · 22 km deep · 96 km away
  23. 1.5106 km S of Atka, Alaska · 1898 days ago · 26 km deep · 81 km away
  24. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1895 days ago · 26 km deep · 98 km away
  25. 2.6104 km SE of Adak, Alaska · 1893 days ago · 2 km deep · 70 km away
  26. 2.183 km SE of Adak, Alaska · 1892 days ago · 21 km deep · 95 km away
  27. 2.095 km SSW of Atka, Alaska · 1891 days ago · 16 km deep · 88 km away
  28. 1.697 km SSW of Atka, Alaska · 1891 days ago · 26 km deep · 88 km away

Before

  1. 1.599 km SW of Atka, Alaska · 1961 days ago · 26 km deep · 97 km away
  2. 3.6100 km SW of Atka, Alaska · 1970 days ago · 35 km deep · 98 km away
  3. 1.8119 km SSW of Atka, Alaska · 1975 days ago · 7 km deep · 65 km away
  4. 2.881 km SE of Adak, Alaska · 1979 days ago · 33 km deep · 98 km away
  5. 2.5Andreanof Islands, Aleutian Islands, Alaska · 1979 days ago · 35 km deep · 98 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000efhv. Read Fri, Sep 25, 2026, 11:25 AM UTC.