Alaska earthquakes

M4.4 earthquake 83 km SSW of Adak, Alaska

A magnitude 4.4 earthquake struck 83 km SSW of Adak, Alaska on Thu, Oct 30, 1997, 10:00 PM HAST (08:00 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.9 90 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
4.4 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-10-31 08:00:43 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.223° N, 177.224° 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: 11 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 4.7117 km WSW of Adak, Alaska · 10554 days ago · 33 km deep · 72 km away
  2. 4.990 km WSW of Adak, Alaska · 10550 days ago · 33 km deep · 42 km away
  3. 4.5127 km WSW of Adak, Alaska · 10540 days ago · 33 km deep · 66 km away
  4. 4.2137 km SW of Adak, Alaska · 10539 days ago · 33 km deep · 75 km away
  5. 4.131 km ESE of Adak, Alaska · 10538 days ago · 61 km deep · 95 km away
  6. 4.495 km S of Adak, Alaska · 10537 days ago · 33 km deep · 61 km away
  7. 4.683 km S of Adak, Alaska · 10533 days ago · 33 km deep · 33 km away
  8. 4.3152 km SW of Adak, Alaska · 10532 days ago · 33 km deep · 85 km away
  9. 4.280 km SSE of Adak, Alaska · 10531 days ago · 33 km deep · 79 km away
  10. 3.468 km SE of Adak, Alaska · 10524 days ago · 33 km deep · 98 km away
  11. 3.2137 km WSW of Adak, Alaska · 10512 days ago · 33 km deep · 98 km away

Before

  1. 4.555 km SSE of Adak, Alaska · 10566 days ago · 33 km deep · 63 km away
  2. 4.7107 km SW of Adak, Alaska · 10577 days ago · 33 km deep · 45 km away
  3. 6.499 km WSW of Adak, Alaska · 10579 days ago · 22 km deep · 51 km away
  4. 4.6136 km WSW of Adak, Alaska · 10582 days ago · 33 km deep · 84 km away
  5. 4.587 km SW of Adak, Alaska · 10583 days ago · 33 km deep · 38 km away
  6. 4.9113 km WSW of Adak, Alaska · 10585 days ago · 33 km deep · 72 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00089u8. Read Fri, Oct 2, 2026, 7:27 AM UTC.