M5.0 earthquake 22 km SW of Adak, Alaska
A magnitude 5.0 earthquake struck 22 km SW of Adak, Alaska on Sat, Feb 21, 1976, 8:21 PM GMT-11 (07:21 UTC), 58 km (36 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.0 (mb), moderate
- Local time
- UTC
- 1976-02-22 07:21:25 UTC
- Depth
- 58.0 km (36.0 mi), shallow
- Epicenter
- 51.726° N, 176.866° 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.
- Stations used
- 53
Nearby
Within 100 km, magnitude 2.0 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 usp0000f5s. Read Tue, Sep 22, 2026, 7:07 AM UTC.