Alaska earthquakes

M4.2 earthquake 137 km SW of Adak, Alaska

A magnitude 4.2 earthquake struck 137 km SW of Adak, Alaska on Sun, Nov 23, 1997, 3:05 PM HAST (01:05 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.0 190 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-11-24 01:05:07 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.196° N, 178.297° 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 7 in the 30 days before it.

After

  1. 3.9190 km W of Adak, Alaska · 10537 days ago · 33 km deep · 86 km away
  2. 4.3152 km SW of Adak, Alaska · 10532 days ago · 33 km deep · 16 km away
  3. 4.7172 km WSW of Adak, Alaska · 10529 days ago · 33 km deep · 57 km away
  4. 5.0190 km WSW of Adak, Alaska · 10523 days ago · 33 km deep · 66 km away
  5. 4.3203 km WSW of Adak, Alaska · 10515 days ago · 33 km deep · 83 km away
  6. 4.4180 km W of Adak, Alaska · 10513 days ago · 33 km deep · 99 km away
  7. 3.2137 km WSW of Adak, Alaska · 10512 days ago · 33 km deep · 42 km away

Before

  1. 4.7194 km WSW of Adak, Alaska · 10540 days ago · 33 km deep · 74 km away
  2. 4.5127 km WSW of Adak, Alaska · 10540 days ago · 33 km deep · 11 km away
  3. 4.990 km WSW of Adak, Alaska · 10550 days ago · 33 km deep · 48 km away
  4. 4.7117 km WSW of Adak, Alaska · 10553 days ago · 33 km deep · 29 km away
  5. 4.4146 km WSW of Adak, Alaska · 10555 days ago · 33 km deep · 36 km away
  6. 4.1156 km WSW of Adak, Alaska · 10557 days ago · 33 km deep · 42 km away
  7. 4.483 km SSW of Adak, Alaska · 10563 days ago · 33 km deep · 75 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0008b88. Read Fri, Oct 2, 2026, 12:59 AM UTC.