Alaska earthquakes

M4.0 earthquake 269 km WSW of Adak, Alaska

A magnitude 4.0 earthquake struck 269 km WSW of Adak, Alaska on Sat, Mar 29, 1997, 4:18 AM GMT+12 (16:18 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.9 184 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
4.0 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-03-28 16:18:07 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.231° N, 179.615° 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: 10 in the 60 days after this one and 36 in the 30 days before it.

After

  1. 4.0297 km WSW of Adak, Alaska · 10769 days ago · 33 km deep · 29 km away
  2. 4.6252 km W of Adak, Alaska · 10759 days ago · 68 km deep · 44 km away
  3. 4.6Rat Islands, Aleutian Islands, Alaska · 10758 days ago · 33 km deep · 48 km away
  4. 3.9Rat Islands, Aleutian Islands, Alaska · 10755 days ago · 33 km deep · 52 km away
  5. 3.8193 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 78 km away
  6. 4.4194 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 80 km away
  7. 4.9184 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 89 km away
  8. 4.4243 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 27 km away
  9. 4.2196 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 78 km away
  10. 3.4Rat Islands, Aleutian Islands, Alaska · 10741 days ago · 33 km deep · 73 km away

Before

  1. 3.8Rat Islands, Aleutian Islands, Alaska · 10779 days ago · 33 km deep · 49 km away
  2. 4.7281 km WSW of Adak, Alaska · 10779 days ago · 33 km deep · 12 km away
  3. 3.1293 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 50 km away
  4. 4.1274 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 16 km away
  5. 4.3284 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 32 km away
  6. 3.9277 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 7 km away
  7. 4.3276 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 9 km away
  8. 4.5283 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 20 km away
  9. 4.5277 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 10 km away
  10. 4.0296 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 40 km away
  11. 4.0294 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 31 km away
  12. 4.5278 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 13 km away
  13. 4.3288 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 20 km away
  14. 4.2285 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 23 km away
  15. 5.6288 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 19 km away
  16. 4.4Rat Islands, Aleutian Islands, Alaska · 10780 days ago · 33 km deep · 10 km away
  17. 3.8Rat Islands, Aleutian Islands, Alaska · 10780 days ago · 33 km deep · 12 km away
  18. 3.3Rat Islands, Aleutian Islands, Alaska · 10780 days ago · 33 km deep · 17 km away
  19. 3.7286 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 17 km away
  20. 4.2283 km WSW of Adak, Alaska · 10780 days ago · 33 km deep · 14 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0007zn2. Read Thu, Oct 1, 2026, 10:06 AM UTC.