M4.2 earthquake 276 km WSW of Adak, Alaska
A magnitude 4.2 earthquake struck 276 km WSW of Adak, Alaska on Thu, Sep 2, 1976, 4:15 PM GMT+12 (04:15 UTC), 64 km (40 mi) below the surface.
A larger quake followed: M4.9 219 km W 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
- 4.2 (mb), light
- Local time
- UTC
- 1976-09-02 04:15:07 UTC
- Depth
- 64.0 km (39.8 mi), shallow
- Epicenter
- 51.147° N, 179.555° E
- 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
- 8
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 usp0000j5q. Read Tue, Sep 22, 2026, 8:51 PM UTC.