Alaska earthquakes

M4.5 earthquake 87 km SW of Adak, Alaska

A magnitude 4.5 earthquake struck 87 km SW of Adak, Alaska on Fri, Oct 10, 1997, 5:04 PM HADT (02:04 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
4.5 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-10-11 02:04:13 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.419° N, 177.667° 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 1.5 and up: 16 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.6136 km WSW of Adak, Alaska · 10581 days ago · 33 km deep · 52 km away
  2. 6.499 km WSW of Adak, Alaska · 10579 days ago · 22 km deep · 15 km away
  3. 4.7107 km SW of Adak, Alaska · 10577 days ago · 33 km deep · 20 km away
  4. 4.1106 km W of Adak, Alaska · 10574 days ago · 110 km deep · 76 km away
  5. 4.555 km SSE of Adak, Alaska · 10566 days ago · 33 km deep · 90 km away
  6. 4.483 km SSW of Adak, Alaska · 10562 days ago · 33 km deep · 38 km away
  7. 4.1156 km WSW of Adak, Alaska · 10556 days ago · 33 km deep · 77 km away
  8. 4.4146 km WSW of Adak, Alaska · 10554 days ago · 33 km deep · 67 km away
  9. 4.7117 km WSW of Adak, Alaska · 10553 days ago · 33 km deep · 36 km away
  10. 4.990 km WSW of Adak, Alaska · 10549 days ago · 33 km deep · 4 km away
  11. 4.5127 km WSW of Adak, Alaska · 10539 days ago · 33 km deep · 40 km away
  12. 4.2137 km SW of Adak, Alaska · 10539 days ago · 33 km deep · 50 km away
  13. 4.495 km S of Adak, Alaska · 10536 days ago · 33 km deep · 98 km away
  14. 4.683 km S of Adak, Alaska · 10532 days ago · 33 km deep · 70 km away
  15. 4.3152 km SW of Adak, Alaska · 10531 days ago · 33 km deep · 65 km away
  16. 4.7172 km WSW of Adak, Alaska · 10528 days ago · 33 km deep · 94 km away

Before

  1. 4.9113 km WSW of Adak, Alaska · 10585 days ago · 33 km deep · 35 km away
  2. 4.271 km SSW of Adak, Alaska · 10608 days ago · 33 km deep · 53 km away
  3. 4.9Andreanof Islands, Aleutian Islands, Alaska · 10609 days ago · 53 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00088v1. Read Thu, Oct 1, 2026, 3:13 PM UTC.