Alaska earthquakes

M3.5 earthquake 294 km SW of Adak, Alaska

A magnitude 3.5 earthquake struck 294 km SW of Adak, Alaska on Mon, Apr 11, 2022, 12:26 AM GMT-12 (12:26 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.7 296 km SW 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
3.5 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2022-04-11 12:26:13 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.237° N, 179.944° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
3.5mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.128 · 15 stations
3.0ML, local (Richter)Alaska Earthquake CenterPreliminary

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 4.4 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
211°, poorly surrounded by stations
Stations used
53

Nearby

Within 100 km, magnitude 1.5 and up: 43 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 4.7296 km SW of Adak, Alaska · 1633 days ago · 10 km deep · 6 km away
  2. 2.8Rat Islands, Aleutian Islands, Alaska · 1632 days ago · 27 km deep · 17 km away
  3. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1632 days ago · 29 km deep · 29 km away
  4. 2.9Rat Islands, Aleutian Islands, Alaska · 1632 days ago · 10 km deep · 17 km away
  5. 2.4Rat Islands, Aleutian Islands, Alaska · 1632 days ago · 26 km deep · 6 km away
  6. 2.9Rat Islands, Aleutian Islands, Alaska · 1632 days ago · 10 km deep · 16 km away
  7. 2.9290 km SW of Adak, Alaska · 1632 days ago · 10 km deep · 5 km away
  8. 2.5288 km SW of Adak, Alaska · 1631 days ago · 19 km deep · 8 km away
  9. 3.9Rat Islands, Aleutian Islands, Alaska · 1624 days ago · 10 km deep · 38 km away
  10. 2.9Rat Islands, Aleutian Islands, Alaska · 1622 days ago · 29 km deep · 21 km away
  11. 3.6Andreanof Islands, Aleutian Islands, Alaska · 1619 days ago · 10 km deep · 5 km away
  12. 3.2Andreanof Islands, Aleutian Islands, Alaska · 1619 days ago · 10 km deep · 20 km away
  13. 3.2283 km WSW of Adak, Alaska · 1618 days ago · 28 km deep · 88 km away
  14. 2.9212 km WSW of Adak, Alaska · 1618 days ago · 29 km deep · 92 km away
  15. 2.0207 km WSW of Adak, Alaska · 1616 days ago · 7 km deep · 100 km away
  16. 2.7264 km WSW of Adak, Alaska · 1612 days ago · 10 km deep · 96 km away
  17. 2.8227 km WSW of Adak, Alaska · 1605 days ago · 10 km deep · 89 km away
  18. 2.6Rat Islands, Aleutian Islands, Alaska · 1604 days ago · 26 km deep · 9 km away
  19. 1.9298 km WSW of Adak, Alaska · 1604 days ago · 15 km deep · 99 km away
  20. 3.0Rat Islands, Aleutian Islands, Alaska · 1603 days ago · 10 km deep · 6 km away
  21. 3.0Rat Islands, Aleutian Islands, Alaska · 1602 days ago · 35 km deep · 20 km away
  22. 2.5294 km SW of Adak, Alaska · 1601 days ago · 10 km deep · 2 km away
  23. 2.8296 km SW of Adak, Alaska · 1599 days ago · 5 km deep · 5 km away
  24. 1.9289 km WSW of Adak, Alaska · 1598 days ago · 19 km deep · 99 km away
  25. 2.1298 km SW of Adak, Alaska · 1598 days ago · 35 km deep · 11 km away
  26. 2.6south of the Aleutian Islands · 1597 days ago · 10 km deep · 30 km away
  27. 3.0281 km WSW of Adak, Alaska · 1597 days ago · 25 km deep · 87 km away
  28. 1.5249 km WSW of Adak, Alaska · 1596 days ago · 26 km deep · 81 km away
  29. 2.6Rat Islands, Aleutian Islands, Alaska · 1596 days ago · 10 km deep · 10 km away
  30. 1.7280 km SW of Adak, Alaska · 1596 days ago · 33 km deep · 23 km away
  31. 2.9245 km WSW of Adak, Alaska · 1591 days ago · 10 km deep · 84 km away
  32. 2.6240 km SW of Adak, Alaska · 1590 days ago · 10 km deep · 66 km away
  33. 1.9281 km WSW of Adak, Alaska · 1589 days ago · 26 km deep · 94 km away
  34. 2.8Rat Islands, Aleutian Islands, Alaska · 1588 days ago · 10 km deep · 95 km away
  35. 2.8south of the Aleutian Islands · 1586 days ago · 10 km deep · 31 km away
  36. 2.0289 km SW of Adak, Alaska · 1586 days ago · 26 km deep · 7 km away
  37. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1586 days ago · 31 km deep · 9 km away
  38. 3.4277 km WSW of Adak, Alaska · 1584 days ago · 25 km deep · 100 km away
  39. 3.1295 km SW of Adak, Alaska · 1580 days ago · 10 km deep · 7 km away
  40. 1.7238 km WSW of Adak, Alaska · 1579 days ago · 13 km deep · 90 km away
  41. 2.1293 km SW of Adak, Alaska · 1578 days ago · 9 km deep · 64 km away
  42. 2.9272 km WSW of Adak, Alaska · 1576 days ago · 31 km deep · 100 km away
  43. 2.8south of the Aleutian Islands · 1575 days ago · 10 km deep · 53 km away

Before

  1. 2.0297 km WSW of Adak, Alaska · 1644 days ago · 36 km deep · 95 km away
  2. 3.1242 km WSW of Adak, Alaska · 1644 days ago · 15 km deep · 98 km away
  3. 2.5246 km WSW of Adak, Alaska · 1644 days ago · 35 km deep · 95 km away
  4. 3.2Rat Islands, Aleutian Islands, Alaska · 1646 days ago · 10 km deep · 60 km away
  5. 3.0south of the Aleutian Islands · 1647 days ago · 30 km deep · 32 km away
  6. 3.0Andreanof Islands, Aleutian Islands, Alaska · 1647 days ago · 10 km deep · 18 km away
  7. 4.0298 km SW of Adak, Alaska · 1647 days ago · 10 km deep · 5 km away
  8. 2.7240 km WSW of Adak, Alaska · 1648 days ago · 17 km deep · 92 km away
  9. 3.2243 km WSW of Adak, Alaska · 1649 days ago · 24 km deep · 98 km away
  10. 2.7210 km WSW of Adak, Alaska · 1650 days ago · 6 km deep · 94 km away
  11. 2.7Rat Islands, Aleutian Islands, Alaska · 1652 days ago · 10 km deep · 27 km away
  12. 1.9235 km WSW of Adak, Alaska · 1653 days ago · 13 km deep · 91 km away
  13. 2.7265 km WSW of Adak, Alaska · 1655 days ago · 25 km deep · 100 km away
  14. 1.9238 km WSW of Adak, Alaska · 1656 days ago · 17 km deep · 100 km away
  15. 1.9227 km WSW of Adak, Alaska · 1664 days ago · 26 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000h1b3 (also filed as ak0224n8kvcb). Read Thu, Oct 1, 2026, 7:06 PM UTC.