Alaska earthquakes

M3.9 earthquake 141 km WSW of Adak, Alaska

A magnitude 3.9 earthquake struck 141 km WSW of Adak, Alaska on Mon, Aug 25, 1997, 4:36 PM HADT (01:36 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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The earthquake

Magnitude
3.9 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-08-26 01:36:48 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.311° N, 178.467° 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: 14 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 4.492 km SW of Adak, Alaska · 10629 days ago · 33 km deep · 57 km away
  2. 4.1134 km WSW of Adak, Alaska · 10624 days ago · 33 km deep · 15 km away
  3. 4.582 km SW of Adak, Alaska · 10622 days ago · 33 km deep · 61 km away
  4. 4.7139 km SW of Adak, Alaska · 10622 days ago · 33 km deep · 19 km away
  5. 4.3224 km WSW of Adak, Alaska · 10619 days ago · 60 km deep · 88 km away
  6. 4.9Andreanof Islands, Aleutian Islands, Alaska · 10609 days ago · 53 km deep · 24 km away
  7. 4.9216 km WSW of Adak, Alaska · 10605 days ago · 33 km deep · 77 km away
  8. 5.6212 km WSW of Adak, Alaska · 10605 days ago · 33 km deep · 73 km away
  9. 4.9113 km WSW of Adak, Alaska · 10584 days ago · 33 km deep · 29 km away
  10. 4.587 km SW of Adak, Alaska · 10582 days ago · 33 km deep · 57 km away
  11. 4.6136 km WSW of Adak, Alaska · 10581 days ago · 33 km deep · 6 km away
  12. 6.499 km WSW of Adak, Alaska · 10578 days ago · 22 km deep · 43 km away
  13. 4.7107 km SW of Adak, Alaska · 10577 days ago · 33 km deep · 42 km away
  14. 4.1106 km W of Adak, Alaska · 10574 days ago · 110 km deep · 82 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00086qc. Read Thu, Oct 1, 2026, 1:17 PM UTC.