M4.1 earthquake 35 km ESE of Adak, Alaska
A magnitude 4.1 earthquake struck 35 km ESE of Adak, Alaska on Sat, Sep 4, 1976, 9:03 AM GMT-10 (19:03 UTC), 53 km (33 mi) below the surface.
A larger quake followed: M5.1 49 km ESE of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb), light
- Local time
- UTC
- 1976-09-04 19:03:23 UTC
- Depth
- 53.0 km (32.9 mi), shallow
- Epicenter
- 51.739° N, 176.165° 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
- 5
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 2 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 usp0000j7d. Read Tue, Sep 22, 2026, 8:01 AM UTC.