M4.5 earthquake 23 km E of Adak, Alaska
A magnitude 4.5 earthquake struck 23 km E of Adak, Alaska on Fri, Feb 13, 1981, 5:46 AM GMT-11 (16:46 UTC), 65 km (40 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
- 1981-02-13 16:46:23 UTC
- Depth
- 64.9 km (40.3 mi), shallow
- Epicenter
- 51.872° N, 176.287° 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 0 in the 30 days before it.
After
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001c5n. Read Tue, Sep 22, 2026, 7:03 AM UTC.