Alaska earthquakes

M3.4 earthquake 284 km WSW of Adak, Alaska

A magnitude 3.4 earthquake struck 284 km WSW of Adak, Alaska on Fri, Mar 21, 1997, 12:12 PM GMT+12 (00:12 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M6.7 273 km WSW 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
3.4 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-03-21 00:12:59 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
50.931° N, 179.568° E
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.

Depth from
OPERATOR_ASSIGNED

Nearby

Within 100 km, magnitude 1.5 and up: 45 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 4.3290 km WSW of Adak, Alaska · 10786 days ago · 33 km deep · 32 km away
  2. 3.8255 km W of Adak, Alaska · 10786 days ago · 33 km deep · 76 km away
  3. 4.2194 km WSW of Adak, Alaska · 10786 days ago · 33 km deep · 92 km away
  4. 4.6283 km WSW of Adak, Alaska · 10783 days ago · 33 km deep · 41 km away
  5. 6.7273 km WSW of Adak, Alaska · 10782 days ago · 33 km deep · 39 km away
  6. 4.1262 km W of Adak, Alaska · 10782 days ago · 33 km deep · 95 km away
  7. 4.7283 km WSW of Adak, Alaska · 10782 days ago · 33 km deep · 51 km away
  8. 3.5286 km WSW of Adak, Alaska · 10782 days ago · 33 km deep · 47 km away
  9. 4.1280 km WSW of Adak, Alaska · 10782 days ago · 33 km deep · 18 km away
  10. 3.9269 km W of Adak, Alaska · 10782 days ago · 33 km deep · 92 km away
  11. 5.3280 km WSW of Adak, Alaska · 10781 days ago · 33 km deep · 32 km away
  12. 5.2282 km WSW of Adak, Alaska · 10781 days ago · 33 km deep · 33 km away
  13. 4.8282 km WSW of Adak, Alaska · 10781 days ago · 33 km deep · 24 km away
  14. 4.8281 km WSW of Adak, Alaska · 10781 days ago · 33 km deep · 35 km away
  15. 4.2283 km WSW of Adak, Alaska · 10781 days ago · 33 km deep · 35 km away
  16. 3.7286 km WSW of Adak, Alaska · 10781 days ago · 33 km deep · 33 km away
  17. 3.3Rat Islands, Aleutian Islands, Alaska · 10780 days ago · 33 km deep · 40 km away
  18. 3.8Rat Islands, Aleutian Islands, Alaska · 10780 days ago · 33 km deep · 46 km away
  19. 4.4Rat Islands, Aleutian Islands, Alaska · 10780 days ago · 33 km deep · 37 km away
  20. 5.6288 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 37 km away
  21. 4.2285 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 14 km away
  22. 4.3288 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 24 km away
  23. 4.5278 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 22 km away
  24. 4.0294 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 16 km away
  25. 4.0296 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 12 km away
  26. 4.5277 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 25 km away
  27. 4.5283 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 16 km away
  28. 4.3276 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 25 km away
  29. 3.9277 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 32 km away
  30. 4.3284 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 1 km away
  31. 4.1274 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 18 km away
  32. 3.1293 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 17 km away
  33. 4.7281 km WSW of Adak, Alaska · 10779 days ago · 33 km deep · 35 km away
  34. 3.8Rat Islands, Aleutian Islands, Alaska · 10779 days ago · 33 km deep · 47 km away
  35. 4.0269 km WSW of Adak, Alaska · 10779 days ago · 33 km deep · 34 km away
  36. 4.0297 km WSW of Adak, Alaska · 10769 days ago · 33 km deep · 41 km away
  37. 4.6252 km W of Adak, Alaska · 10760 days ago · 68 km deep · 78 km away
  38. 4.6Rat Islands, Aleutian Islands, Alaska · 10758 days ago · 33 km deep · 53 km away
  39. 3.9Rat Islands, Aleutian Islands, Alaska · 10755 days ago · 33 km deep · 38 km away
  40. 3.8193 km WSW of Adak, Alaska · 10746 days ago · 33 km deep · 90 km away
  41. 4.4194 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 90 km away
  42. 4.9184 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 99 km away
  43. 4.4243 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 53 km away
  44. 4.2196 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 87 km away
  45. 3.4Rat Islands, Aleutian Islands, Alaska · 10741 days ago · 33 km deep · 66 km away

Before

  1. 3.3258 km WSW of Adak, Alaska · 10798 days ago · 115 km deep · 46 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0007z6c. Read Thu, Oct 1, 2026, 3:15 PM UTC.