Alaska earthquakes

M4.6 earthquake 136 km WSW of Adak, Alaska

A magnitude 4.6 earthquake struck 136 km WSW of Adak, Alaska on Sun, Oct 12, 1997, 3:11 AM HADT (12:11 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M6.4 99 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
4.6 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-10-12 12:11:54 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.358° N, 178.415° 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.

Depth from
OPERATOR_ASSIGNED

Nearby

Within 100 km, magnitude 1.6 and up: 15 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 6.499 km WSW of Adak, Alaska · 10579 days ago · 22 km deep · 38 km away
  2. 4.7107 km SW of Adak, Alaska · 10577 days ago · 33 km deep · 39 km away
  3. 4.1106 km W of Adak, Alaska · 10574 days ago · 110 km deep · 76 km away
  4. 4.483 km SSW of Adak, Alaska · 10562 days ago · 33 km deep · 84 km away
  5. 4.1156 km WSW of Adak, Alaska · 10557 days ago · 33 km deep · 26 km away
  6. 4.4146 km WSW of Adak, Alaska · 10554 days ago · 33 km deep · 17 km away
  7. 4.7117 km WSW of Adak, Alaska · 10553 days ago · 33 km deep · 19 km away
  8. 4.990 km WSW of Adak, Alaska · 10549 days ago · 33 km deep · 49 km away
  9. 4.5127 km WSW of Adak, Alaska · 10540 days ago · 33 km deep · 21 km away
  10. 4.7194 km WSW of Adak, Alaska · 10539 days ago · 33 km deep · 63 km away
  11. 4.2137 km SW of Adak, Alaska · 10539 days ago · 33 km deep · 20 km away
  12. 3.9190 km W of Adak, Alaska · 10536 days ago · 33 km deep · 71 km away
  13. 4.3152 km SW of Adak, Alaska · 10531 days ago · 33 km deep · 31 km away
  14. 4.7172 km WSW of Adak, Alaska · 10528 days ago · 33 km deep · 43 km away
  15. 5.0190 km WSW of Adak, Alaska · 10522 days ago · 33 km deep · 57 km away

Before

  1. 4.587 km SW of Adak, Alaska · 10583 days ago · 33 km deep · 52 km away
  2. 4.9113 km WSW of Adak, Alaska · 10585 days ago · 33 km deep · 23 km away
  3. 5.6212 km WSW of Adak, Alaska · 10605 days ago · 33 km deep · 78 km away
  4. 4.9216 km WSW of Adak, Alaska · 10605 days ago · 33 km deep · 81 km away
  5. 4.9Andreanof Islands, Aleutian Islands, Alaska · 10609 days ago · 53 km deep · 18 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00088xa. Read Thu, Oct 1, 2026, 4:18 PM UTC.