Alaska earthquakes

M4.8 earthquake 286 km WSW of Adak, Alaska

A magnitude 4.8 earthquake struck 286 km WSW of Adak, Alaska on Thu, Nov 22, 1984, 4:15 PM GMT+12 (04:15 UTC), 33 km (21 mi) below the surface.

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The earthquake

Magnitude
4.8 (mb), light
Local time
UTC
1984-11-22 04:15:14 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.128° N, 179.416° E
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 1.8 and up: 3 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.5Rat Islands, Aleutian Islands, Alaska · 15279 days ago · 33 km deep · 24 km away
  2. 4.6Rat Islands, Aleutian Islands, Alaska · 15279 days ago · 33 km deep · 41 km away
  3. 4.5281 km WSW of Adak, Alaska · 15279 days ago · 33 km deep · 23 km away

Before

  1. 5.9Rat Islands, Aleutian Islands, Alaska · 15282 days ago · 39 km deep · 23 km away
  2. 5.3275 km WSW of Adak, Alaska · 15301 days ago · 57 km deep · 11 km away
  3. 5.4282 km WSW of Adak, Alaska · 15303 days ago · 39 km deep · 5 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000299h. Read Tue, Sep 22, 2026, 12:20 PM UTC.