Alaska earthquakes

M1.9 earthquake 43 km SSW of Atka, Alaska

A magnitude 1.9 earthquake struck 43 km SSW of Atka, Alaska on Tue, Apr 27, 2021, 3:59 AM HADT (12:59 UTC), 44 km (28 mi) below the surface.

A larger quake followed: M5.1 75 km SE of Atka, Alaska. This one was a foreshock.

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
1.9 (ml), micro
Local time
UTC
2021-04-27 12:59:00 UTC
Depth
44.3 km (27.5 mi), shallow
Epicenter
51.820° N, 174.371° 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
17

Nearby

Within 100 km, magnitude 1.5 and up: 36 in the 60 days after this one and 72 in the 30 days before it.

After

  1. 2.869 km ENE of Adak, Alaska · 1978 days ago · 82 km deep · 92 km away
  2. 1.8119 km SSW of Atka, Alaska · 1977 days ago · 7 km deep · 77 km away
  3. 2.194 km SE of Atka, Alaska · 1977 days ago · 18 km deep · 80 km away
  4. 2.363 km S of Atka, Alaska · 1977 days ago · 21 km deep · 25 km away
  5. 3.7126 km SSE of Atka, Alaska · 1975 days ago · 38 km deep · 98 km away
  6. 3.345 km SSE of Atka, Alaska · 1974 days ago · 56 km deep · 35 km away
  7. 3.6100 km SW of Atka, Alaska · 1972 days ago · 35 km deep · 66 km away
  8. 1.599 km SW of Atka, Alaska · 1963 days ago · 26 km deep · 64 km away
  9. 3.199 km ESE of Adak, Alaska · 1963 days ago · 35 km deep · 67 km away
  10. 2.684 km SSE of Atka, Alaska · 1963 days ago · 35 km deep · 63 km away
  11. 2.955 km SW of Atka, Alaska · 1962 days ago · 51 km deep · 26 km away
  12. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1962 days ago · 29 km deep · 81 km away
  13. 2.579 km WSW of Atka, Alaska · 1961 days ago · 57 km deep · 55 km away
  14. 3.955 km SSE of Atka, Alaska · 1954 days ago · 35 km deep · 34 km away
  15. 4.295 km SE of Atka, Alaska · 1954 days ago · 16 km deep · 80 km away
  16. 4.281 km SE of Atka, Alaska · 1954 days ago · 41 km deep · 73 km away
  17. 5.175 km SE of Atka, Alaska · 1954 days ago · 21 km deep · 68 km away
  18. 3.879 km SE of Atka, Alaska · 1954 days ago · 45 km deep · 68 km away
  19. 3.6123 km SSE of Atka, Alaska · 1954 days ago · 39 km deep · 99 km away
  20. 4.198 km SE of Atka, Alaska · 1954 days ago · 45 km deep · 82 km away
  21. 4.099 km SE of Atka, Alaska · 1954 days ago · 35 km deep · 84 km away
  22. 2.984 km E of Adak, Alaska · 1950 days ago · 238 km deep · 73 km away
  23. 4.245 km E of Atka, Alaska · 1946 days ago · 148 km deep · 72 km away
  24. 2.042 km SW of Atka, Alaska · 1945 days ago · 55 km deep · 21 km away
  25. 2.4118 km SSE of Atka, Alaska · 1945 days ago · 37 km deep · 83 km away
  26. 3.3107 km SSE of Atka, Alaska · 1942 days ago · 33 km deep · 85 km away
  27. 3.2Andreanof Islands, Aleutian Islands, Alaska · 1935 days ago · 35 km deep · 63 km away
  28. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1934 days ago · 35 km deep · 85 km away
  29. 2.873 km ESE of Adak, Alaska · 1934 days ago · 70 km deep · 85 km away
  30. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1933 days ago · 35 km deep · 50 km away
  31. 4.189 km SSE of Atka, Alaska · 1933 days ago · 30 km deep · 68 km away
  32. 2.915 km NNE of Atka, Alaska · 1933 days ago · 178 km deep · 59 km away
  33. 2.193 km SW of Atka, Alaska · 1929 days ago · 24 km deep · 55 km away
  34. 1.9105 km SSW of Atka, Alaska · 1927 days ago · 64 km deep · 66 km away
  35. 1.694 km ESE of Adak, Alaska · 1926 days ago · 36 km deep · 69 km away
  36. 2.994 km SE of Atka, Alaska · 1922 days ago · 11 km deep · 76 km away

Before

  1. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1979 days ago · 6 km deep · 33 km away
  2. 2.256 km WNW of Atka, Alaska · 1980 days ago · 78 km deep · 73 km away
  3. 2.881 km SE of Adak, Alaska · 1981 days ago · 33 km deep · 99 km away
  4. 2.5Andreanof Islands, Aleutian Islands, Alaska · 1981 days ago · 35 km deep · 65 km away
  5. 2.968 km E of Atka, Alaska · 1981 days ago · 223 km deep · 96 km away
  6. 1.978 km SE of Atka, Alaska · 1981 days ago · 12 km deep · 70 km away
  7. 1.771 km SW of Atka, Alaska · 1982 days ago · 38 km deep · 46 km away
  8. 3.893 km ESE of Adak, Alaska · 1982 days ago · 50 km deep · 68 km away
  9. 1.766 km SW of Atka, Alaska · 1983 days ago · 63 km deep · 39 km away
  10. 3.168 km SE of Atka, Alaska · 1983 days ago · 35 km deep · 66 km away
  11. 2.120 km ESE of Atka, Alaska · 1983 days ago · 146 km deep · 47 km away
  12. 2.154 km E of Atka, Alaska · 1983 days ago · 88 km deep · 75 km away
  13. 2.237 km ESE of Atka, Alaska · 1983 days ago · 153 km deep · 57 km away
  14. 3.7106 km ESE of Adak, Alaska · 1984 days ago · 35 km deep · 70 km away
  15. 3.0Andreanof Islands, Aleutian Islands, Alaska · 1984 days ago · 192 km deep · 58 km away
  16. 2.220 km E of Atka, Alaska · 1984 days ago · 115 km deep · 55 km away
  17. 1.683 km SW of Atka, Alaska · 1985 days ago · 26 km deep · 56 km away
  18. 1.9121 km SSW of Atka, Alaska · 1987 days ago · 8 km deep · 80 km away
  19. 2.6102 km ESE of Adak, Alaska · 1987 days ago · 35 km deep · 71 km away
  20. 2.228 km SE of Atka, Alaska · 1987 days ago · 70 km deep · 34 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0215dpdgby. Read Sun, Sep 27, 2026, 10:08 AM UTC.