Alaska earthquakes

M4.1 earthquake 106 km W of Adak, Alaska

A magnitude 4.1 earthquake struck 106 km W of Adak, Alaska on Sat, Oct 18, 1997, 10:05 PM HADT (07:05 UTC), 110 km (68 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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The earthquake

Magnitude
4.1 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-10-19 07:05:28 UTC
Depth
109.9 km (68.3 mi), intermediate-depth
Epicenter
52.027° N, 178.164° 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
FROM_LOCATION

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 4.1156 km WSW of Adak, Alaska · 10557 days ago · 33 km deep · 79 km away
  2. 4.4146 km WSW of Adak, Alaska · 10555 days ago · 33 km deep · 73 km away
  3. 4.7117 km WSW of Adak, Alaska · 10553 days ago · 33 km deep · 65 km away
  4. 4.990 km WSW of Adak, Alaska · 10550 days ago · 33 km deep · 73 km away
  5. 4.5127 km WSW of Adak, Alaska · 10540 days ago · 33 km deep · 86 km away
  6. 4.5193 km W of Adak, Alaska · 10539 days ago · 131 km deep · 87 km away
  7. 4.2137 km SW of Adak, Alaska · 10539 days ago · 33 km deep · 93 km away
  8. 3.9190 km W of Adak, Alaska · 10537 days ago · 33 km deep · 95 km away
  9. 4.7172 km WSW of Adak, Alaska · 10529 days ago · 33 km deep · 89 km away

Before

  1. 4.7107 km SW of Adak, Alaska · 10577 days ago · 33 km deep · 85 km away
  2. 6.499 km WSW of Adak, Alaska · 10579 days ago · 22 km deep · 69 km away
  3. 4.6136 km WSW of Adak, Alaska · 10581 days ago · 33 km deep · 76 km away
  4. 4.587 km SW of Adak, Alaska · 10583 days ago · 33 km deep · 76 km away
  5. 4.9113 km WSW of Adak, Alaska · 10585 days ago · 33 km deep · 59 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00089ag. Read Thu, Oct 1, 2026, 11:01 PM UTC.