M4.9 earthquake 69 km SE of Atka, Alaska
A magnitude 4.9 earthquake struck 69 km SE of Atka, Alaska on Fri, May 21, 1976, 1:15 AM GMT-10 (11:15 UTC), 45 km (28 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1976-05-21 11:15:24 UTC
- Depth
- 45.0 km (28.0 mi), shallow
- Epicenter
- 51.720° N, 173.541° 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
- CONSTRAINED_BY_DEPTH_PHASES
- Stations used
- 93
Nearby
Within 100 km, magnitude 1.9 and up: 0 in the 60 days after this one and 4 in the 30 days before it.
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000gf3. Read Tue, Sep 22, 2026, 8:44 PM UTC.