M4.5 earthquake 4 km E of Adak, Alaska
A magnitude 4.5 earthquake struck 4 km E of Adak, Alaska on Sun, Oct 4, 1981, 1:17 AM GMT-10 (11:17 UTC), 88 km (55 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1981-10-04 11:17:30 UTC
- Depth
- 88.0 km (54.7 mi), intermediate-depth
- Epicenter
- 51.873° N, 176.575° 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.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 1 in the 30 days before it.
After
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001g9m. Read Tue, Sep 22, 2026, 7:42 AM UTC.