Alaska earthquakes

M3.2 earthquake 137 km WSW of Adak, Alaska

A magnitude 3.2 earthquake struck 137 km WSW of Adak, Alaska on Sun, Dec 21, 1997, 2:29 AM HAST (12:29 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.9 123 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
3.2 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-12-21 12:29:34 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.542° N, 178.545° 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: 7 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 4.5216 km WSW of Adak, Alaska · 10484 days ago · 33 km deep · 80 km away
  2. 4.9123 km WSW of Adak, Alaska · 10479 days ago · 33 km deep · 39 km away
  3. 4.888 km WSW of Adak, Alaska · 10474 days ago · 42 km deep · 55 km away
  4. 4.6133 km WSW of Adak, Alaska · 10466 days ago · 33 km deep · 38 km away
  5. 4.1210 km W of Adak, Alaska · 10462 days ago · 99 km deep · 80 km away
  6. 3.8Andreanof Islands, Aleutian Islands, Alaska · 10457 days ago · 33 km deep · 69 km away
  7. 3.6195 km W of Adak, Alaska · 10457 days ago · 100 km deep · 62 km away

Before

  1. 4.4180 km W of Adak, Alaska · 10513 days ago · 33 km deep · 60 km away
  2. 4.3203 km WSW of Adak, Alaska · 10515 days ago · 33 km deep · 67 km away
  3. 5.0190 km WSW of Adak, Alaska · 10523 days ago · 33 km deep · 54 km away
  4. 4.7172 km WSW of Adak, Alaska · 10529 days ago · 33 km deep · 35 km away
  5. 4.3152 km SW of Adak, Alaska · 10531 days ago · 33 km deep · 52 km away
  6. 3.9190 km W of Adak, Alaska · 10537 days ago · 33 km deep · 57 km away
  7. 4.2137 km SW of Adak, Alaska · 10539 days ago · 33 km deep · 42 km away
  8. 4.5193 km W of Adak, Alaska · 10539 days ago · 131 km deep · 83 km away
  9. 4.7194 km WSW of Adak, Alaska · 10540 days ago · 33 km deep · 57 km away
  10. 4.5127 km WSW of Adak, Alaska · 10540 days ago · 33 km deep · 41 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0008d04. Read Fri, Oct 2, 2026, 12:20 AM UTC.