M4.4 earthquake 65 km SSW of Unalaska, Alaska
A magnitude 4.4 earthquake struck 65 km SSW of Unalaska, Alaska on Wed, Oct 20, 1976, 5:58 PM GMT-9 (02:58 UTC), 64 km (40 mi) below the surface.
A larger quake followed: M4.9 70 km E of Nikolski, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb), light
- Local time
- UTC
- 1976-10-21 02:58:51 UTC
- Depth
- 64.0 km (39.8 mi), shallow
- Epicenter
- 53.328° N, 166.917° 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
- 13
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
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 usp0000jz3. Read Tue, Sep 22, 2026, 8:09 AM UTC.