M3.7 earthquake 39 km S of Unalaska, Alaska
A magnitude 3.7 earthquake struck 39 km S of Unalaska, Alaska on Fri, Jan 23, 1976, 3:03 AM GMT-10 (13:03 UTC), 104 km (65 mi) below the surface.
A larger quake followed: M4.8 121 km S of Unalaska, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.7 (mb), minor
- Local time
- UTC
- 1976-01-23 13:03:04 UTC
- Depth
- 104.0 km (64.6 mi), intermediate-depth
- Epicenter
- 53.520° N, 166.491° 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
- 10
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.8121 km S of Unalaska, Alaska · 18447 days ago · 33 km deep · 83 km away
- 4.826 km WSW of Akutan, Alaska · 18446 days ago · 79 km deep · 61 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000ep9. Read Tue, Sep 22, 2026, 7:06 AM UTC.